tm267510-1_s3asr - none

As filed with the Securities and Exchange Commission on March 2, 2026

Registration No. 333-

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-3

REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933

	Amphenol Corporation			Amphenol Technologies Holding GmbH
	(Exact name of Registrant as specified in its charter)			(Exact name of Registrant as specified in its charter)
				Not Applicable
				(Translation of Registrant’s name into English)
	Delaware			Germany
	(State or other jurisdiction of incorporation or organization)			(State or other jurisdiction of incorporation or organization)
	22-2785165			Not Applicable
	(I.R.S. Employer Identification No.)			(I.R.S. Employer Identification No.)
	358 Hall Avenue Wallingford, Connecticut 06492 (203) 265-8900			August-Häußer-Strasse 10 74080 Heilbronn, Germany + 49(0) 7131 929 0
	(Address and telephone number of Registrant’s principal executive offices)			(Address and telephone number of Registrant’s principal executive offices)

Lance D’Amico
Executive Vice President, Secretary and General Counsel
Amphenol Corporation
358 Hall Avenue
Wallingford, Connecticut 06492
(203) 265-8900

(Name, address, including zip code, and telephone number, including area of code, of agent for service)

Copies To:

Wesley C. Holmes, Esq.
R. Charles Cassidy III, Esq.
Latham & Watkins LLP
200 Clarendon Street
Boston, Massachusetts 02116
(617) 948-6000

Approximate date of commencement of proposed sale to the public:
From time to time after the effective date of this registration statement, as determined by market and other conditions.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☒

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Amphenol Corporation

	Large accelerated filer ☒			Accelerated filer ☐			Non-accelerated filer ☐			Smaller reporting company ☐
										Emerging growth company ☐

Amphenol Technologies Holding GmbH

	Large accelerated filer ☐			Accelerated filer ☐			Non-accelerated filer ☒			Smaller reporting company ☐
										Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

TABLE OF CONTENTS

PROSPECTUS

AMPHENOL CORPORATION

Senior Debt Securities
Guarantees

AMPHENOL TECHNOLOGIES HOLDING GMBH

Senior Debt Securities

Amphenol Corporation may offer and sell its senior debt securities and guarantees, from time to time, in one or more offerings. Amphenol Technologies Holding GmbH may offer and sell its senior debt securities, from time to time, in one or more offerings.

This prospectus describes the general terms of these securities and the general manner in which we will offer them. We will provide a supplement to accompany this prospectus each time we offer any of these securities. The accompanying prospectus supplement will contain the terms of each series of securities, describe the specific manner in which we will offer such securities, and may also supplement, update or amend information contained in this prospectus. This prospectus may not be used to offer or sell any securities unless accompanied by a prospectus supplement. You should read this prospectus and the accompanying prospectus supplement, together with additional information described under the heading “Where You Can Find More Information” and “Incorporation of Certain Information by Reference,” before you invest.

We may offer and sell these securities, on a continuous or delayed basis, to or through one or more underwriters, dealers or agents, or directly to purchasers. If any underwriters, dealers or agents are involved in the sale of any of the securities, their names and any applicable purchase price, fee, commission or discount arrangement between or among them will be set forth, or will be calculable from the information set forth, in the applicable prospectus supplement. See the sections of this prospectus entitled “About this Prospectus” and “Plan of Distribution” for more information. No securities may be sold without delivery of this prospectus and the applicable prospectus supplement describing the method and terms of the offering of such securities.

Investing in our securities involves risks. See “Risk Factors” on page 6 of this prospectus, the risk factors included in Amphenol Corporation’s periodic reports filed with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, each of which is incorporated by reference herein, and any risk factors described in the accompanying prospectus supplement, for a discussion of certain risks you should consider carefully before investing in our securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

This prospectus, the available prospectus supplement and any free writing prospectus we authorize contains and incorporates by reference information that you should consider when making your investment decision. We have not authorized anyone to provide you with different information. If you receive any different or inconsistent information, you should not rely on it.

You should assume that the information contained in this prospectus, the accompanying prospectus supplement, any freewriting prospectus and the documents incorporated by reference herein and therein, is accurate only as of their respective dates. Our business, financial condition, results of operations and prospects may have changed since those dates.

We are not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted.

The date of this prospectus is March 2, 2026.

TABLE OF CONTENTS

ABOUT THIS PROSPECTUS

This prospectus is part of an automatic shelf registration statement on Form S-3 that we filed with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”), as a “well-known seasoned issuer” as defined in Rule 405 under the Securities Act, using a “shelf” registration, or continuous offering, process. Under this shelf registration process, we may, at any time and from time to time, issue and sell, in one or more offerings, the securities described in this prospectus.

This prospectus provides you with a general description of the securities we may offer. Each time we sell securities, we will provide a prospectus supplement that accompanies this prospectus that will provide specific information about the terms of that offering and the offered securities, including the specific amounts and prices of the securities offered. The accompanying prospectus supplement may include or incorporate by reference a detailed and current discussion of any risk factors and will discuss any special considerations applicable to those securities, including the plan of distribution. We may also authorize one or more free writing prospectuses to be provided to you that may contain material information relating to these offerings. The accompanying prospectus supplement or free writing prospectus may also add, update or change information contained in this prospectus. You should read both this prospectus and any prospectus supplement together with additional information described under “Where You Can Find More Information.” Any information in the accompanying prospectus supplement or free writing prospectus that is inconsistent with this prospectus will modify or supersede the information in this prospectus.

The registration statement we filed with the SEC includes exhibits that provide more detail of the matters discussed in this prospectus. Statements contained in this prospectus about the provisions or contents of any agreement or other document are not necessarily complete. If the SEC’s rules and regulations require that an agreement or document be filed as an exhibit to the registration statement, please see that agreement or document for a complete description of these matters.

Before making your investment decision, you should read and carefully consider this prospectus, the accompanying prospectus supplement (and any applicable free writing prospectuses), and the related exhibits filed with the SEC, together with the additional information in the documents referred to in the sections entitled “Where You Can Find More Information” and “Incorporation of Certain Information by Reference” below. Information incorporated by reference after the date of this prospectus is considered a part of this prospectus and may add, update or change information contained in this prospectus. Any information in such subsequent filings that is inconsistent with this prospectus will modify or supersede the information in this prospectus.

We have not authorized anyone to provide you with any information or to make any representations other than those contained in this prospectus, any applicable accompanying prospectus supplement or any free writing prospectuses prepared by or on behalf of us or to which we have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We will not make an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus and the applicable accompanying prospectus supplement to this prospectus is accurate only as of the date on its respective cover, that the information appearing in any applicable free writing prospectus is accurate only as of the date of that free writing prospectus, and that any information incorporated by reference is accurate only as of the date of the document incorporated by reference, unless we indicate otherwise. Our business, financial condition, results of operations and prospects may have changed since those dates. This prospectus incorporates by reference, and any accompanying prospectus supplement or free writing prospectus may contain and incorporate by reference, market data and industry statistics and forecasts that are based on independent industry publications and other publicly available information. Although we believe these sources are reliable, we do not guarantee the accuracy or completeness of this information and we have not independently verified this information. In addition, the market and industry data and forecasts that may be included or incorporated by reference in this prospectus, any accompanying prospectus supplement or any applicable free writing prospectus may involve estimates, assumptions and other risks and uncertainties and are subject to change based on various factors, including those discussed under the heading “Risk Factors” contained in this prospectus, the applicable accompanying prospectus supplement and any applicable free writing

TABLE OF CONTENTS

NOTICE TO PROSPECTIVE INVESTORS IN THE EUROPEAN ECONOMIC AREA

The debt securities are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the European Economic Area (“EEA”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client as defined in point (11) of Article 4(1) of Directive 2014/65/EU (as amended, “MiFID II”); or (ii) a customer within the meaning of Directive (EU) 2016/97, where that customer would not qualify as a professional client as defined in point (10) of Article 4(1) of MiFID II; or (iii) not a qualified investor as defined in Regulation (EU) 2017/1129 (as amended, the “Prospectus Regulation”). The expression “offer” includes the communication in any form and by any means of sufficient information on the terms of the offer and the debt securities to be offered so as to enable an investor to decide to purchase or subscribe for the debt securities.

Consequently, no key information document required by Regulation (EU) No 1286/2014 (as amended, the “PRIIPs Regulation”) for offering or selling the debt securities or otherwise making them available to retail investors in the EEA has been prepared, and therefore offering or selling the debt securities or otherwise making them available to any retail investor in the EEA may be unlawful under the PRIIPs Regulation. This prospectus has been prepared on the basis that any offer of the debt securities in any Member State of the EEA will be made pursuant to an exemption under the Prospectus Regulation from the requirement to publish a prospectus for offers of debt securities. This prospectus is not a prospectus for the purposes of the Prospectus Regulation.

TABLE OF CONTENTS

FORWARD-LOOKING STATEMENTS

Certain statements in this prospectus and the documents incorporated by reference herein and therein, that are not purely historical information, are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 and the provisions of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such forward-looking statements are based on our management’s assumptions and beliefs about future events or circumstances using information currently available, and, as a result, they are subject to risks and uncertainties. Forward-looking statements address events or developments that we expect or believe may or will occur in the future. These forward-looking statements, which address the Company’s expected business and financial performance and financial condition, among other matters, may contain words and terms such as: “anticipate,” “believe,” “commit,” “continue,” “could,” “estimate,” “expect,” “forecast,” “guidance,” “intend,” “look ahead,” “may,” “ongoing,” “optimistic,” “plan,” “potential,” “predict,” “project,” “seek,” “should,” “target,” “will” or “would” and other words and terms of similar meaning.

Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements about expected earnings, revenues, growth, liquidity, effective tax rate, interest rates, anticipated benefits of certain acquisitions, financing sources, the expected timing for the closing of certain acquisitions or other matters. Although we believe the expectations reflected in all forward-looking statements are based upon reasonable assumptions, the expectations may not be attained or there may be material deviation. Readers and investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. There are risks and uncertainties that could cause actual results to differ materially from these forward-looking statements.

A description of some of these uncertainties and other risks is included in the section entitled “Part I, Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2025, incorporated by reference herein, as well as other reports filed with the Securities and Exchange Commission (“SEC”), including, but not limited to, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K. There may be other risks and uncertainties not identified in these documents (that we either currently do not expect to have an adverse effect on our business or that we are unable to predict or identify at the time of this prospectus) that may cause our actual future results to be materially different from those expressed in any forward-looking statements. Our forward-looking statements may also be impacted by, among other things, future tax, regulatory and other legal changes that may arise in any of the jurisdictions in which we operate.

The Company undertakes no obligation to update or revise any forward-looking statements except as required by law.

WHERE YOU CAN FIND MORE INFORMATION

We have filed a registration statement on Form S-3 with the SEC under the Securities Act. Except as required by law, we do not undertake any obligation to update or publicly release any revisions to any forward-looking statement made by us or on our behalf to reflect new information, future events or changes in expectations after the date on which such forward-looking statement is made.

This prospectus is part of the registration statement, but the registration statement also contains or incorporates by reference additional information and exhibits. Forms of the indentures and other documents establishing the terms of the offered securities are or may be filed as exhibits to the registration statement or documents incorporated by reference in the registration statement. We are subject to the informational requirements of the Exchange Act and, in accordance with these requirements, we file reports and other information relating to our business, financial condition and other matters with the SEC. We are required to disclose in such reports certain information, as of particular dates, concerning our operating results and financial condition, officers and directors, principal holders of shares, any material interests of such persons in transactions with us and other matters. The SEC maintains a website that contains reports and other information regarding registrants like us that file electronically with the SEC. The address of the SEC’s website is: http://www.sec.gov.

TABLE OF CONTENTS

You can also obtain our Annual Reports, statements regarding our quarterly results, statements regarding any quarterly dividend payments, and other information about the Company at our website: http://www.amphenol.com. Our website and the information contained on our website are not part of this prospectus.

INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

The SEC allows Amphenol Corporation to “incorporate by reference” into this prospectus the information that Amphenol Corporation has filed with the SEC, which means that Amphenol Corporation can disclose important information to you by referring you to those documents. The information incorporated by reference is an important part of this prospectus, and the information that Amphenol Corporation files later with the SEC will automatically update and, where applicable, modify or supersede the information in this prospectus and the documents listed below. Amphenol Corporation hereby “incorporates by reference” the following documents that have been or will be filed with the SEC:

•

Amphenol Corporation’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed on February 11, 2026;

•

Amphenol Corporation’s Current Reports on Form 8-K, filed on January 8, 2026 (other than the information furnished pursuant to Item 7.01 and Exhibit 99.1), January 12, 2026 (other than the information furnished pursuant to Item 7.01 and Exhibit 99.1) and February 5, 2026 (other than the information furnished pursuant to Item 7.01 and Exhibit 99.1); and

•

all of Amphenol Corporation’s future filings with the SEC pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus until the offerings contemplated by this prospectus are completed or terminated.

Amphenol Corporation is not, however, incorporating any documents or information that are deemed to have been furnished rather than filed in accordance with SEC rules.

You may request a copy of these filings, at no cost, by writing or telephoning us at the following address and number:

Investor Relations
Amphenol Corporation
358 Hall Avenue
Wallingford, Connecticut 06492
Telephone No: (203) 265-8900

Exhibits to the filings will not be sent, however, unless those exhibits have specifically been incorporated by reference in this prospectus or any accompanying prospectus supplement.

Amphenol Technologies Holding GmbH does not, and will not, file separate reports with the SEC.

TABLE OF CONTENTS

AMPHENOL CORPORATION

Amphenol Corporation is one of the world’s largest designers, manufacturers and marketers of electrical, electronic and fiber optic connectors and interconnect systems, antennas, sensors and sensor-based products and coaxial, high-speed, fiber optic and specialty cable. The Company estimates, based on recent reports of industry analysts, that worldwide sales of interconnect, value-add cable assembly, antenna, cable and sensor-related products were approximately $500 billion in 2025.

Certain predecessor businesses of the Company were founded in 1932, and the Company was incorporated under the laws of the State of Delaware in 1986. The Company’s Class A Common Stock (“Common Stock”) began trading on the New York Stock Exchange in 1991.

The Company’s strategy is to provide our customers with comprehensive design capabilities, a broad selection of products and a high level of quality and service on a worldwide basis, while maintaining continuing programs of productivity improvement and cost control. The Company aligns its businesses into three reportable business segments: (i) Communications Solutions, (ii) Harsh Environment Solutions and (iii) Interconnect and Sensor Systems. This alignment and segment structure reinforces the Company’s entrepreneurial culture and enables clear accountability of each of our business unit general managers, while enhancing the scalability of Amphenol’s business for the future. The Company has three segment managers who lead their respective reportable business segments, each reporting directly to the Company’s Chief Executive Officer. All segment information throughout this prospectus is presented under our three reportable segments.

A description of each of our reportable business segments is as follows:

•

Communications Solutions — the Communications Solutions segment designs, manufactures and markets a broad range of connector and interconnect systems, including high speed, radio frequency, power, fiber optic and other products, coaxial and high-speed cable, as well as antennas.

•

Harsh Environment Solutions — the Harsh Environment Solutions segment designs, manufactures and markets a broad range of ruggedized interconnect products, including connectors and interconnect systems, specialty cable, printed circuits and printed circuit assemblies and other products.

•

Interconnect and Sensor Systems — the Interconnect and Sensor Systems segment designs, manufactures and markets a broad range of sensors, sensor-based systems, connectors and value-add interconnect systems.

Our principal executive offices are located at 358 Hall Avenue, Wallingford, Connecticut 06492, and our main telephone number is (203) 265-8900. Our website is located at http://www.amphenol.com. Our website and the information contained on our website are not part of this prospectus.

TABLE OF CONTENTS

ENFORCEMENT OF CIVIL LIABILITIES

Amphenol Technologies Holding GmbH is incorporated as a limited liability company (Gesellschaft mit beschränkter Haftung) under the laws of Germany. Certain of Amphenol Technologies Holding GmbH’s managing directors and authorized officers may reside outside the United States, and certain of Amphenol Technologies Holding GmbH’s or such persons’ assets are or may be located outside the United States. As a result, it may be difficult for investors to effect service of process, including judgments, upon Amphenol Technologies Holding GmbH or such persons outside of Germany or within the United States. It may also be difficult for investors to enforce against Amphenol Technologies Holding GmbH judgments obtained in courts other than courts within the member states of the European Union.

There is no treaty between Germany and the United States providing for the reciprocal recognition and enforcement of judgements, other than arbitration awards, in civil and commercial matters. Consequently, a final judgement for payment given by any federal or state court in the United States, whether or not predicated solely upon U.S. federal or state securities laws, would not automatically be enforceable, either in whole or in part, in Germany. A final judgement by a U.S. federal or state court, however, may be recognized and enforced in Germany in an action before a court of competent jurisdiction in accordance with the proceedings set forth by the German Code of Civil Procedure (Zivilprozessordnung). In such an action, a German court generally will not reinvestigate the merits of the original matter decided by a U.S. court, except as noted below. A German court will reject the recognition and enforcement of the U.S. judgement if one or more of the following circumstances exists:

•

the judgement is not final under U.S. law; or

•

the U.S. court did not have international jurisdiction over the original proceedings according to the applicable German and EU rules on international jurisdiction; or

•

the defendant did not appear in the proceedings and invokes such lack of appearance, and the document commencing the proceedings was not duly made known to the defendant in a timely manner that allowed for adequate defense; or

•

the judgment of the U.S. court is in conflict with a prior judgment of a German court or a prior judgment of another foreign court which is to be recognized by German courts; or

•

the proceedings leading to the judgment of the U.S. court are irreconcilable with proceedings in the German courts which had become pending (rechtshängig) before; or

•

the effects of recognition of the judgment by the U.S. court would be manifestly incompatible with German public policy, including the fundamental principles of German law, and in particular the civil liberties (Grundrechte) guaranteed by virtue of the German Constitution (Grundgesetz); or

•

the reciprocity of recognition and enforcement of judgments is not guaranteed.

Subject to the foregoing, investors may be able to enforce judgments in civil and commercial matters obtained from U.S. federal or state courts in Germany. It cannot be guaranteed that attempts to enforce judgments in Germany will be successful. It is doubtful whether a German court would impose civil liability if proceedings were commenced in Germany based solely upon U.S. federal or state securities laws. However, if an original action is brought before a German court, and the court does not decline jurisdiction, the court may apply not only EU and German rules of civil procedure, but also certain substantive provisions of the EU and the German law that are regarded as mandatory and may refuse to apply U.S. federal and state law provisions, particularly those relating to certain remedies, if the relevant application violates German public policy.

Enforcement is also subject to the effect of any applicable bankruptcy, insolvency, reorganization, liquidation or moratorium as well as other similar laws affecting investor’s rights generally.

German courts also usually deny the recognition and enforcement of punitive damages or any other damages which do not serve a compensatory purpose, such as treble damages, as incompatible with the fundamental principles of German law on damages. Moreover, a German court may reduce the amount of damages granted by a U.S. court and recognize damages only to the extent that they are necessary to compensate actual losses or damages.

TABLE OF CONTENTS

German civil procedure differs substantially from U.S. civil procedure in a number of respects. Insofar as the production of evidence is concerned, U.S. federal and state law and the laws of several other jurisdictions based on common law provide for pre-trial discovery, a process by which parties to the proceedings may, prior to trial, compel the production of documents by adverse or third parties and the deposition of witnesses. Evidence obtained in this manner may be decisive in the outcome of any proceeding. No equivalent pre-trial discovery process exists under German law.

If the party in whose favor such final U.S. judgment is rendered brings a new lawsuit in a competent court in Germany, such party may submit to the German court the final judgment rendered in the United States. Under such circumstances, a judgment by a federal or state court of the United States will be regarded by a German court only as evidence of the outcome of the dispute to which such judgment relates. A German court may choose to re-hear the dispute and may render a judgment not in line with the judgment rendered by a federal or state court of the United States.

TABLE OF CONTENTS

GUARANTOR DISCLOSURES

Amphenol Corporation will guarantee debt securities of Amphenol Technologies Holding GmbH, as described in “Description of Guarantees” in this prospectus and as further described in the applicable prospectus supplement. Any such guarantees by Amphenol Corporation will be full, irrevocable, unconditional and absolute joint and several guarantees to the holders of each series of such guaranteed debt securities. Amphenol Technologies Holding GmbH is consolidated into the financial statements of Amphenol Corporation.

Amphenol Corporation and Amphenol Technologies Holding GmbH have filed this prospectus with the SEC registering, among other securities, debt securities of Amphenol Technologies Holding GmbH, which will be fully and unconditionally guaranteed by Amphenol Corporation. Pursuant to Rule 3-10 of Regulation S-X, separate consolidated financial statements of Amphenol Technologies Holding GmbH have not been presented. As permitted under Rule 13-01(a)(4)(vi) of Regulation S-X, we have excluded the combined summarized financial information of Amphenol Corporation and Amphenol Technologies Holding GmbH as management believes that such summarized financial information would not be material to investors.

TABLE OF CONTENTS

DESCRIPTION OF SENIOR DEBT SECURITIES

General

The following is a summary of the general terms of the senior debt securities that: (i) Amphenol Corporation may issue under the indenture, dated March 16, 2023, between Amphenol Corporation and U.S. Bank Trust Company, National Association, as trustee (or any other trustee as set forth in a resolution of the board of directors of Amphenol Corporation, an officer’s certificate or a supplemental indenture pursuant to the indenture) (the “Amphenol indenture”) and (ii) Amphenol Technologies Holding GmbH may issue under the form of indenture between Amphenol Technologies Holding GmbH, Amphenol Corporation, as guarantor, and U.S. Bank Trust Company, National Association, as trustee (or any other trustee as set forth in an officer’s certificate or a supplemental indenture pursuant to the form of indenture) (the “Amphenol Technologies indenture” and together with the Amphenol indenture, the “indentures”). The terms of the senior debt securities include those expressly set forth in the applicable indenture and those made part of such indenture by referencing the Trust Indenture Act of 1939. The particular terms of the senior debt securities of any series and the extent, if any, to which such general terms may apply to the senior debt securities of such series will be described in the prospectus supplement applicable to the senior debt securities of such series. If there is any inconsistency between the information in this prospectus and the prospectus supplement applicable to the senior debt securities of such series, you should rely on the information in such accompanying prospectus supplement. This description of senior debt securities provides an overview of the material provisions of the senior debt securities and, to the extent applicable to the senior debt securities, the indentures. Since this description of senior debt securities is a summary, you should refer to the applicable indenture for a complete description of our obligations and the rights of a holder of senior debt securities thereunder. The indenture governing Amphenol Corporation’s senior debt securities and the form of indenture governing Amphenol Technologies Holding GmbH’s senior debt securities have been filed as exhibits to the registration statement of which this prospectus is a part. Any debt securities issued by Amphenol Technologies Holding GmbH will be guaranteed by Amphenol Corporation. See “Description of Guarantees” below.

In this description, unless specifically noted otherwise or unless the context otherwise requires, all references to “we,” “us,” “our” and “ours” refer to either Amphenol Corporation or Amphenol Technologies Holding GmbH, as the case may be, as issuer of the applicable senior debt securities, and not to any of their respective subsidiaries; all references to “Guarantor” refers to Amphenol Corporation as guarantor of the senior debt securities to be issued by Amphenol Technologies Holding GmbH and all references to “senior debt securities” refer to the senior debt securities issued by either Amphenol Corporation and Amphenol Technologies Holding GmbH, as issuers of the applicable senior debt securities. Unless otherwise defined in this prospectus, capitalized terms used in this “Description of the Senior Debt Securities” section are defined under “— Definitions” below.

There is no requirement under either indenture that future issuances of our senior debt securities be issued under the indentures, and in connection with future issuances of other senior debt securities, we will be free to use other indentures or instruments, which may contain provisions different from those contained in the indentures or applicable to one or more series of senior debt securities issued thereunder.

The indentures do not limit the aggregate principal amount of senior debt securities that may be issued thereunder. The indentures provide that the senior debt securities may be issued in one or more series. The senior debt securities may be issued at various times and may have differing maturity dates and may bear different interest rates. The prospectus supplement applicable to the senior debt securities of any series will describe:

•

whether the issuer of the senior debt securities is Amphenol Corporation or Amphenol Technologies Holding GmbH;

•

the designation and aggregate principal amount of the senior debt securities of such series and their authorized denominations (if other than $2,000 and integral multiples thereof);

•

the date or dates on which the senior debt securities of such series will mature;

•

the interest rate or rates, or method of calculation of such rate or rates, on the senior debt securities of such series, and the date from which such interest shall accrue;

TABLE OF CONTENTS

•

the dates on which such interest will be payable or the method by which such dates are to be determined;

•

the record dates for payment of such interest;

•

any obligation to redeem or repurchase the senior debt securities of such series, whether pursuant to a sinking fund or analogous provision or at our option or the option of the holder thereof;

•

the period or periods within which, the price or prices at which, and the terms and conditions upon which, the senior debt securities of such series may be redeemed or repurchased, in whole or in part;

•

the inapplicability of any event of default or covenant set forth in the applicable indenture relating to the senior debt securities, or the applicability of any other events of default or covenant in addition to the events of default or covenants set forth in the applicable indenture relating to the senior debt securities;

•

the currency of denomination of the debt securities, which may be United States Dollars, Euros or any foreign currency;

•

the trustee, registrar, transfer agent, service agent and paying agent for the securities of such series;

•

the ranking of the senior debt securities, and a description of the subordination terms under German law (including their ranking pursuant to section 39 of the German Insolvency Code (Insolvenzordnung)), in the case of the senior debt securities issued by Amphenol Technologies Holding GmbH;

•

if applicable, the circumstances under which we may redeem the senior debt securities of the series if we or the Guarantor is obliged to pay additional amounts thereon; or

•

other specific terms applicable to the senior debt securities of such series.

If Amphenol Technologies Holding GmbH issues the senior debt securities, Amphenol Corporation will fully and unconditionally guarantee the due and punctual payment of the principal of, any premium and any interest on those senior debt securities, when and as these payments become due and payable, whether at maturity, upon redemption or declaration of acceleration, or otherwise. See “Description of Guarantees”.

Principal of and premium, if any, and interest on the senior debt securities issued and payable in United States Dollars will be payable, and the senior debt securities issued and payable in United States Dollars may be exchanged or transferred, at our office or agency (which initially shall be the corporate trust office of the trustee, 185 Asylum Street, 27th Floor, Hartford, CT 06103), except that, at our option, payment of interest may be made by check mailed to the registered holders of the senior debt securities at their registered address. Principal of and premium, if any, and interest on the senior debt securities issued and payable in Euros or any other foreign currency will be payable, and the senior debt securities issued and payable in Euros or any other foreign currency may be exchanged or transferred, at our office or agency, except that, at our option, payment of interest may be made by check mailed to the registered holders of the senior debt securities at their registered addresses. No service charge will be made for any registration of transfer or exchange of senior debt securities, but we or the trustee may require payment of a sum sufficient to cover any transfer tax or other similar governmental charge payable in connection with such transfer or exchange.

Unless otherwise indicated in the prospectus supplement applicable to the senior debt securities of any series, in any case where the date of payment of the principal of or premium, if any, or interest on the senior debt securities of any series, including the date, if any, fixed for redemption or repurchase of the senior debt securities of such series, shall not be a “business day” (as defined below), then payment of principal, premium or interest need not be made on that date at such place but may be made on the next succeeding business day, and no interest shall accrue for the intervening period. A “business day” shall mean a day that is not, in Hartford, Connecticut, a Saturday, Sunday, a legal holiday or a day on which banking institutions are authorized or obligated by law to close.

Ranking

The senior debt securities of any issuer will be senior unsecured and unsubordinated indebtedness and will rank equally with all of our existing and future senior unsecured and unsubordinated indebtedness of

TABLE OF CONTENTS

the issuer of the senior debt securities. However, the senior debt securities of Amphenol Corporation and Amphenol Technologies Holding GmbH will be structurally subordinated to the indebtedness of their respective subsidiaries and effectively subordinated to any secured debt to the extent of the value of the assets securing such indebtedness.

The guarantee of senior debt securities to be issued by Amphenol Corporation will be structurally subordinated to the indebtedness of its subsidiaries and effectively subordinated to any secured debt to the extent of the value of the assets securing such indebtedness.

Trustee

We are obligated to pay reasonable compensation to the trustee and the agents and to indemnify the trustee and the agents against certain losses, liabilities, expenses and certain taxes incurred by the trustee and the agents in connection with their duties relating to the senior debt securities. The trustee’s and any agent’s claims for these payments will generally be senior to those of holders of senior debt securities in respect of all funds collected or held by the trustee.

Covenants

Unless otherwise indicated in the prospectus supplement applicable to the senior debt securities of any series and except as discussed below, we are not restricted by the indentures from:

•

incurring any type of indebtedness or other obligation;

•

paying dividends or making distributions on our capital stock; or

•

purchasing or redeeming our capital stock.

We are not required under the indentures to maintain any financial ratios or specified levels of net worth or liquidity.

The indentures contain various covenants, including, among others, the following:

Limitation on Liens

So long as the senior debt securities of any series are outstanding under the applicable indenture, neither Amphenol Corporation nor any Restricted Subsidiary will, directly or indirectly, issue, incur, create, assume or guarantee any indebtedness secured by a mortgage, security interest, pledge, lien, charge or other encumbrance upon any Principal Property or upon any shares of capital stock or indebtedness of any Restricted Subsidiary (a “mortgage”), whether such Principal Property, shares or indebtedness are now existing or owned or hereafter created or acquired, unless prior to or at the same time the senior debt securities of such series and, if applicable, the guarantee of senior debt securities, are equally and ratably secured with or, at our option, prior to such secured indebtedness.

This restriction does not apply to:

(1)

mortgages on property, shares of capital stock or indebtedness or other assets of any entity existing at the time such entity becomes a Restricted Subsidiary, provided that such mortgage was not incurred in anticipation of such entity becoming a Restricted Subsidiary;

(2)

mortgages on property, shares of capital stock or indebtedness existing at the time of acquisition by Amphenol Corporation or any Restricted Subsidiary (which may include property previously leased by Amphenol Corporation or any such Restricted Subsidiary and leasehold interests on the property, provided that the lease terminates prior to or upon the acquisition), provided that such mortgage was not incurred in anticipation of such acquisition;

(3)

mortgages on property, shares of capital stock or indebtedness to secure any indebtedness incurred prior to, at the time of, or within 270 days after, the latest of the acquisition of such property, shares of capital stock or indebtedness, or in the case of real property, the completion of construction, the completion of improvements or the beginning of substantial commercial

TABLE OF CONTENTS

operation of such real property for the purpose of financing all or any part of the purchase price of such real property, the construction thereof or the making of improvements thereto;

(4)

mortgages in favor of Amphenol Corporation or any Restricted Subsidiary;

(5)

mortgages existing at the time of the closing of the offering of the senior debt securities of such series;

(6)

mortgages on property or other assets of any entity existing at the time such entity is merged into or consolidated with either Amphenol Corporation or any Restricted Subsidiary or at the time of a sale, lease or other disposition of the properties of such entity as an entirety or substantially as an entirety to either Amphenol Corporation or any Restricted Subsidiary, provided that this mortgage was not incurred in anticipation of the merger or consolidation or sale, lease or other disposition;

(7)

mortgages in favor of the United States of America or any state, territory or possession thereof (or the District of Columbia) to secure partial, progress, advance or other payments pursuant to any contract or statute or to secure any indebtedness incurred for the purpose of financing all or any part of the purchase price or cost of constructing or improving the property subject to such mortgages;

(8)

mortgages created in connection with a project financed with, and created to secure, a Nonrecourse Obligation;

(9)

mortgages securing all of the senior debt securities of such series and, if applicable, the guarantee of senior debt securities outstanding under the applicable indenture;

(10)

mortgages imposed by law, including carriers’, warehousemen’s, mechanics, landlords, materialmen’s and repairmen’s or other similar mortgages, in each case for sums not yet overdue for a period of more than 60 days or that are bonded or being contested in good faith by appropriate proceedings;

(11)

mortgages on property or assets under construction (and related rights) in favor of a contractor or developer or arising from progress or partial payments by a third party relating to such property assets;

(12)

mortgages created or subsisting by way of hereditary building rights;

(13)

mortgages pursuant to section 1136 (alone or in conjunction with 1192(1)) of the German Civil Code (Bürgerliches Gesetzbuch);

(14)

mortgages required to be granted under mandatory law in favor of creditors as a consequence of a merger or conversion permitted under the prospectus supplement due to section 22, 204 of the German Transformation Act (Umwandlungsgesetz);

(15)

mortgages on accounts receivable securing Amphenol Corporation’s indebtedness or, in the case of senior debt securities issued pursuant to the Amphenol Technologies indenture, the indebtedness of Amphenol Technologies Holding GmbH; or

(16)

extensions, renewals or replacements of any mortgage referred to in clauses (1) through (15) above without increase of the principal of the indebtedness secured by the mortgage;

provided, however, that any mortgages permitted by any of the clauses above shall not extend to or cover any property of ours or that of any Restricted Subsidiary, as the case may be, other than the property specified in these clauses and improvements to this property.

Notwithstanding the restrictions outlined in the preceding paragraphs, Amphenol Corporation and any Restricted Subsidiary are permitted to issue, incur, create, assume or guarantee indebtedness secured by a mortgage without equally and ratably securing the senior debt securities of such series and, if applicable, the guarantee of senior debt securities then outstanding under the applicable indenture, if, after giving effect thereto and any concurrent retirement of indebtedness, the aggregate amount of all indebtedness secured

TABLE OF CONTENTS

by mortgages (not including mortgages permitted under clauses (1) through (16) above) does not at such time exceed 15% of Consolidated Net Tangible Assets.

Notwithstanding the foregoing, any mortgage securing the senior debt securities granted pursuant to this covenant shall be automatically and unconditionally released and discharged upon the release by all holders of the indebtedness secured by the mortgage giving rise to the mortgage securing the senior secured securities (including any deemed release upon payment in full of all obligations under such indebtedness).

Limitation on Sale/Leaseback Transactions

So long as the senior debt securities of any series are outstanding under the applicable indenture, neither Amphenol Corporation nor any Restricted Subsidiary will enter into any “sale/leaseback transaction” (as defined below) with respect to any Principal Property, whether now owned or hereafter acquired by Amphenol Corporation or any Restricted Subsidiary, unless:

(a)

Amphenol Corporation or such Restricted Subsidiary would, at the time of entering into such arrangement, be able to incur indebtedness secured by a mortgage on the Principal Property involved in the transaction at least equal in amount to the Attributable Debt with respect to such sale/leaseback transaction, without equally and ratably securing the senior debt securities of such series and, if applicable, the guarantee of senior debt securities, under the covenant described in “— Limitation on Liens” above; or

(b)

the net proceeds of the sale of the Principal Property to be leased are at least equal to such Principal Property’s fair market value, as determined by the board of directors of Amphenol Corporation, and the proceeds are applied within 180 days of the effective date of the sale/leaseback transaction to the purchase, construction, development or acquisition of assets that are Principal Property or to the repayment of senior indebtedness of Amphenol Corporation or any Restricted Subsidiary.

This restriction does not apply to sale/leaseback transactions:

•

entered into prior to the time of the closing of the offering of the senior debt securities of such series;

•

between Amphenol Corporation and any Restricted Subsidiary or between Restricted Subsidiaries;

•

under which the rent payable pursuant to such lease is to be reimbursed under a contract with the U.S. Government or any instrumentality or agency thereof;

•

involving leases for a period of no longer than three years; or

•

in which the lease for the property or asset is entered into within 270 days after the date of acquisition, completion of construction or commencement of full operations of such property or asset, whichever is latest.

A “sale/leaseback transaction” means an arrangement relating to property now owned or hereafter acquired whereby either Amphenol Corporation transfers, or any Restricted Subsidiary transfers, such property to a person and either Amphenol Corporation or any Restricted Subsidiary leases it back from such person.

Notwithstanding the restrictions outlined in the preceding paragraphs, Amphenol Corporation and any Restricted Subsidiary will be permitted to enter into sale/leaseback transactions that would otherwise be subject to such restrictions, without complying with the requirements of clauses (a) and (b) above, if, after giving effect thereto, the aggregate amount of all Attributable Debt with respect to sale/leaseback transactions existing at such time that could not have been entered into except for the provisions described in this paragraph, together with the aggregate amount of all outstanding indebtedness secured by mortgages permitted by any of clauses (1) through (16) under “— Limitation on Liens” above, does not exceed 15% of Consolidated Net Tangible Assets.

A sale/leaseback transaction shall not be deemed to result in the creation of a mortgage.

TABLE OF CONTENTS

Merger, Consolidation or Sale of Assets

Amphenol Corporation may, without the consent of the holders of any outstanding series of senior debt securities, consolidate with, sell, lease, convey or otherwise transfer all or substantially all of its assets to, or merge with or into, any other person or entity, provided that:

(i)

Amphenol Corporation shall be the continuing entity, or the successor entity formed from the consolidation or merger or the entity that received the transfer of the assets is organized and validly existing as a corporation under the laws of any state of the United States of America, or the District of Columbia and expressly assumes, by supplemental indenture, the due and punctual payment of the principal of and premium, if any, and interest on the senior debt securities or, as applicable, the guarantee and the performance or observance of every covenant in the applicable indenture on the part of Amphenol Corporation to be performed or observed;

(ii)

immediately after giving effect to the transaction, no default shall have occurred and be continuing with respect to the any series of senior debt securities; and

(iii)

an officer’s certificate and legal opinion are delivered to the trustee, each stating that the consolidation, merger, conveyance or transfer complies with the clauses (i) and (ii) above and that all conditions precedent herein provided for relating to such transaction have been complied with.

In addition, in the case of an offering by Amphenol Technologies Holding GmbH pursuant to the Amphenol Technologies indenture, Amphenol Technologies Holding GmbH may consolidate with, or merge with or into, any other person or entity, provided that:

(i)

Amphenol Technologies Holding GmbH or the successor entity (if other than Amphenol Corporation) formed from the consolidation or merger shall be a person organized and validly existing under the laws of any state of the United States of America, the District of Columbia any province of Canada, Norway, Switzerland or any member state of the European Union and expressly assumes the due and punctual payment of the principal of and premium, if any, and interest on the senior debt securities and the performance and observance of all of the covenants and conditions in the indenture to be performed or observed;

(ii)

immediately after giving effect to the transaction, no default shall have occurred and be continuing with respect to the any series of senior debt securities; and.

(iii)

The successor person or entity will succeed to Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, and be substituted for Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, and may exercise all of the rights and powers of Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH under the applicable indenture, but in the case of a lease of all or substantially all of the assets of Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, we will not be released from the obligation to pay the principal of and premium, if any, and interest on the senior debt securities.

Definitions

For purposes of this “Description of the Senior Debt Securities” section, the following terms have the following meanings:

“Attributable Debt” means, when used in connection with a sale/leaseback transaction, on any date as of which the amount of Attributable Debt is to be determined, the product of (a) the net proceeds from the sale/leaseback transaction multiplied by (b) a fraction, the numerator of which is the number of full years of the term of the lease relating to the property involved in the sale/leaseback transaction (without regard to any options to renew or extend such term) remaining on the date of the making of the computation, and the denominator of which is the number of full years of the term of the lease measured from the first day of the term.

TABLE OF CONTENTS

“Consolidated Net Tangible Assets” means the aggregate amount of assets included on Amphenol Corporation’s consolidated balance sheet as of the most recent fiscal quarter end for which such consolidated balance sheet is available, minus (a) all current liabilities, except for current maturities of long-term debt and current maturities of obligations under capital leases, and (b) total goodwill and other intangible assets, all as set forth on the most recent consolidated balance sheet of Amphenol Corporation and its consolidated subsidiaries and computed in accordance with generally accepted accounting principles.

“default” means any event that is, or after notice or passage of time or both would be, an event of default under the applicable indenture.

“indebtedness” means, with respect to any person, obligations (other than Nonrecourse Obligations) of such person for borrowed money or evidenced by bonds, debentures, notes or similar instruments.

“Nonrecourse Obligation” means indebtedness or other obligations substantially related to (a) the acquisition of assets not previously owned by Amphenol Corporation or any Restricted Subsidiary or (b) the financing of a project involving the development or expansion of Amphenol Corporation’s properties or those of any Restricted Subsidiary, as to which the obligee with respect to such indebtedness or obligation has no recourse to Amphenol Corporation or any Restricted Subsidiary or any of Amphenol Corporation’s assets or those of any Restricted Subsidiary other than the assets that were acquired with the proceeds of such transaction or the project financed with the proceeds of such transaction (and the proceeds thereof).

“person” means any individual, corporation, partnership, limited liability company, joint venture, association, joint-stock company, trust, unincorporated organization or government or political subdivision thereof.

“Principal Property” means the land, land improvements, buildings (to the extent they constitute real property interests and including any leasehold interest therein) and fixtures (including, for the avoidance of doubt, all machinery and equipment) constituting the principal corporate office, any manufacturing plant or any manufacturing facility (whether now owned or hereafter acquired) that:

•

is owned by Amphenol Corporation or any of its subsidiaries;

•

is located within any of the present 50 states of the United States of America or the District of Columbia (or, in the case of an offering by Amphenol Technologies Holding GmbH pursuant to the Amphenol Technologies indenture, any province of Canada, Norway, Switzerland or any member state of the European Union); and

•

has not been determined in good faith by Amphenol Corporation’s board of directors not to be materially important to the total business conducted by Amphenol Corporation and its subsidiaries taken as a whole.

“Restricted Subsidiary” means any of Amphenol Corporation’s direct or indirect subsidiaries, including Amphenol Technologies Holding GmbH, that owns any Principal Property; provided, however, that the term “Restricted Subsidiary” does not include:

•

any such subsidiary that is principally engaged in leasing or in financing receivables or that is principally engaged in financing outside the United States of America Amphenol Corporation’s operations or those of its subsidiaries; or

•

any such subsidiary less than 80% of the Voting Stock of which is owned, directly or indirectly, by Amphenol Corporation, by one or more of Amphenol Corporation’s subsidiaries or by Amphenol Corporation and one or more of its subsidiaries if the common stock of such subsidiary is traded on any national securities exchange or in the over-the-counter market.

“Voting Stock” of a person means all classes of any and all shares, interests, rights to purchase, warrants, options, participation or other equivalents of or interests in (however designated) equity of such person, including any preferred stock and limited liability or partnership interests (whether general or limited), but excluding any debt securities convertible into such equity, to the extent then outstanding and normally entitled to vote in the election of such person’s directors, managers or trustees, as applicable.

TABLE OF CONTENTS

Defaults

Unless otherwise indicated in the prospectus supplement applicable to the senior debt securities of any series, each of the following is an “event of default” with respect to the senior debt securities of such series under the indentures:

(1)

a default in the payment of any interest on any debt security of such series when it becomes due and payable, and the continuance of such default for a period of 30 days;

(2)

a default in the payment of principal of or premium, if any, on any debt security of such series when due at its maturity, including at the stated maturity, upon redemption or required repurchase, upon declaration of acceleration or otherwise;

(3)

a failure by Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, to comply with the other covenants or warranties contained in the applicable indenture (other than any such covenant or warranty for which the consequences of nonperformance or breach are addressed elsewhere in this paragraph and other than a covenant or warranty that is solely for the benefit of debt securities other than such series) continuing for 90 days after written notice has been given as provided in the applicable indenture;

(4)

(a) a failure by Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, to make any payment at maturity, including any applicable grace period, on any indebtedness of Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, in an amount in excess of $50,000,000 or (b) a default on any indebtedness of Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, which default results in the acceleration of indebtedness in an amount in excess of $50,000,000;

(5)

the occurrence of various events of bankruptcy, insolvency or reorganization involving Amphenol Corporation or, as applicable, Amphenol Technologies Holding GmbH, as provided in the applicable indenture; or

(6)

in the case of the Amphenol Technologies indenture, the guarantee by the Guarantor ceases to be in full and effect (other than in accordance with the terms of the guarantee) or the Guarantor denies or disaffirms its obligations under its guarantee.

The foregoing constitute events of default whatever the reason for any such event of default and whether it is voluntary or involuntary or is effected by operation of any law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body.

If an event of default with respect to the senior debt securities of any series, other than an event of default described in clause (5) above, occurs and is continuing, then the trustee (acting at the request or direction of the holders) or the holders of at least 25% in aggregate principal amount of the outstanding senior debt securities of such series by notice to us may declare the principal of and accrued but unpaid interest on all the senior debt securities of such series to be due and payable. Upon this declaration, principal of and interest on the senior debt securities of such series will be immediately due and payable. If an event of default described in clause (5) above occurs and is continuing, the principal of and accrued but unpaid interest on all the senior debt securities of such series will become immediately due and payable without any declaration or other act on the part of the trustee or any holders. Under some circumstances, the holders of a majority in aggregate principal amount of the outstanding senior debt securities of such series may rescind any acceleration with respect to the senior debt securities of such series and its consequences.

If an event of default occurs and is continuing, the trustee, in conformity with its duties under the applicable indenture, will be required to exercise all rights or powers under the applicable indenture at the written request or direction of any of the holders, provided the holders provide the trustee with a security or indemnity against the costs, expenses and liabilities that might be incurred by it in compliance with such request or direction. Except to enforce the right to receive payment of principal, premium, if any, or interest when due, no holder of senior debt securities of any series may pursue any remedy with respect to the applicable indenture or the senior debt securities unless:

•

such holder previously notified the trustee that an event of default is continuing;

TABLE OF CONTENTS

•

the holders of at least 25% in aggregate principal amount of the outstanding senior debt securities of such series requested the trustee to pursue the remedy;

•

such holders offered, and if requested, provided, the trustee security or indemnity satisfactory to the trustee against the costs, expenses and liabilities that may be incurred by it in compliance with such request;

•

the trustee has not complied with the holder’s request within 60 days after its receipt of such notice, request and offer of security or indemnity; and

•

the holders of a majority in principal amount of the outstanding senior debt securities of such series have not given the trustee a direction inconsistent with the request within the 60-day period.

Generally, the holders of a majority in principal amount of the outstanding senior debt securities of a series are given the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee or of exercising any trust or power conferred on the trustee with respect to the senior debt securities of such series. The trustee, however, may refuse to follow any direction that conflicts with law or the applicable indenture or that the trustee determines is unduly prejudicial to the rights of any other holder of senior debt securities of such series or that would expose the trustee to personal liability.

If a default or event of default with respect to the senior debt securities of a series occurs and is continuing and a responsible officer of the trustee has notice thereof, the trustee must deliver to each holder of any debt security of such series notice of the default or event of default within 90 days after it occurs, or if later, after a responsible officer of the trustee has notice of such default or event of default. Except in the case of a default or event of default in the payment of principal, premium, if any, or interest on any debt security of such series, the trustee may, but has no obligation to, withhold notice if the trustee determines in good faith that withholding notice is in the interests of the holders.

In addition, we are required, so long as any of the senior debt securities are outstanding, deliver to the trustee, within 120 days after the end of each fiscal year, an officer’s certificate stating whether or not, to the knowledge of the signers thereof, we are in default in the performance and observance of any of the terms, provisions and conditions of the indentures (without regard to any period of grace or requirement of notice provided hereunder), and if a default or event of default shall have occurred, specifying all such defaults or events of default and the nature and status thereof of which we may have knowledge. We also are required, so long as any of the senior debt securities are outstanding, to deliver to the trustee, within 30 days after becoming aware of any default or event of default, an officer’s certificate specifying such default or event of default and what action we are taking or propose to take with respect thereto.

Amendments and Waivers

Amphenol Corporation, Amphenol Technologies Holding GmbH (as applicable) and the trustee may amend the applicable indenture as to the senior debt securities of any series and any guarantee, as applicable, with the written consent of the holders of a majority in principal amount of the senior debt securities of such series then outstanding. Any past default or compliance with any provisions of the applicable indenture or the senior debt securities of such series, or any guarantee, as applicable, may be waived with the written consent of the holders of a majority in principal amount of the senior debt securities of such series then outstanding. These consents may be obtained through a tender offer or exchange offer for the senior debt securities of such series.

Without the consent of each holder of an outstanding debt security of any series, we and the trustee may not amend the indenture as to such series to:

•

reduce the amount of senior debt securities of such series whose holders must consent to an amendment, supplement or waiver;

•

reduce the rate of or extend the time for payment of interest (including default interest) on any debt security of such series;

•

reduce the principal of or premium, if any, on any debt security of such series or change its maturity, including the stated maturity or the date of redemption or required repurchase thereof;

TABLE OF CONTENTS

•

reduce the principal amount of discount securities payable upon acceleration of the maturity thereof;

•

make any debt security of such series payable in any currency other than that stated in the debt security of such series;

•

impair the right of any holder of any debt security of such series to receive payment of principal of and interest on the senior debt securities of such series on or after the due dates for the payment of the principal or interest (including additional amounts) or to institute suit for the enforcement of any payment on or with respect to the senior debt securities of such series;

•

make any changes that would affect the ranking of the senior debt securities of such series in a manner adverse to the holders thereof;

•

release the Guarantor from its guarantee or modify the guarantee in any manner adverse to the holders thereof, except as provided for in the applicable indenture;

•

make any change in the amendment or waiver provisions relating to the senior debt securities of such series that require the consent of each holder thereof; or

•

make any change in Sections 6.8 or 6.13 of the applicable indenture relating to the right of holders to receive payment of principal and interest and the waiver past defaults.

Amphenol Corporation, Amphenol Technologies Holding GmbH (as applicable) and the trustee may, however, amend or supplement the applicable indenture without the consent of any holder of the senior debt securities of any series as to:

•

cure, correct or supplement any ambiguity, omission, defect or inconsistency as to the senior debt securities of such series;

•

comply with Article V of the applicable indenture, including the assumption by a successor entity of our obligations under the applicable indenture as to the senior debt securities of such series;

•

provide for uncertificated senior debt securities in addition to or in place of certificated senior debt securities;

•

add guarantees or collateral security with respect to the senior debt securities of such series;

•

add to the covenants under the indentures for the benefit of the holders of the senior debt securities of such series or to surrender any right or power conferred upon us as to the senior debt securities of such series;

•

make any change that does not adversely affect the rights of any holder of senior debt securities of such series in any material respect;

•

provide for the issuance of and establish the form and terms and conditions of securities of any series as permitted by the indentures;

•

change or eliminate any of the provisions of the indentures provided that any such change or elimination will become effective only when there is no security outstanding of any series created prior to the execution of such amendment or supplement that is adversely affected by such provision;

•

evidence and provide for the acceptance of appointment hereunder by a successor trustee with respect to the securities of one or more series and to add to or change any of the provisions of the indentures as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more than one trustee;

•

comply with any requirement of the SEC regarding qualification of the indentures under the Trust Indenture Act of 1939; or

•

release the Guarantor from its guarantee when permitted by the terms of the applicable indenture.

It is not necessary that any consent of the holders of the senior debt securities of any series required under the applicable indenture approve the particular form of any proposed amendment. It is sufficient if such consent approves the substance of the proposed amendment.

TABLE OF CONTENTS

Transfer and Exchange

A holder may transfer or exchange senior debt securities of a series in accordance with the applicable indenture. Upon any transfer or exchange, the registrar of the senior debt securities and the trustee may require a holder to furnish appropriate endorsements and transfer documents and we may require a holder to pay any taxes required by law or permitted by the applicable indenture, including any transfer tax or other similar governmental charge payable as part of the transfer or exchange. We are not required to transfer or exchange any debt security selected for redemption or to transfer or exchange any debt security for a period of 15 days prior to a selection of senior debt securities to be redeemed. The senior debt securities will be issued in registered form and the registered holder of a debt security will be treated as the owner of the debt security for all purposes.

Defeasance

With respect to the senior debt securities of any series, we may, at any time, terminate all of our obligations under the senior debt securities of such series and the indentures (“legal defeasance”), except for certain obligations, including those respecting the defeasance trust and obligations to register the transfer or exchange of the senior debt securities of such securities, to replace mutilated, destroyed, lost or stolen senior debt securities of such series and to maintain a registrar and paying agent in respect of the senior debt securities of such series. We at any time may terminate our obligations with respect to the senior debt securities of any series under the covenants described under “— Covenants” and certain other covenants set forth in the indentures, as well as any additional covenants which may be set forth in the prospectus supplement applicable to the senior debt securities of any series (“covenant defeasance”).

We may exercise our legal defeasance option notwithstanding our prior exercise of our covenant defeasance option. If we exercise our legal defeasance option, payment of the senior debt securities of any series may not be accelerated because of an event of default with respect thereto. If we exercise our covenant defeasance option, payment of the senior debt securities of such series may not be accelerated because of an event of default described in clause (3) (except for the covenant described under “— Covenants — Merger, Consolidation or Sale of Assets”) or clause (4) under “— Defaults” above.

To exercise either defeasance option with respect to the senior debt securities of any series:

•

we must irrevocably deposit with the trustee or the paying agent, as applicable, in trust for the benefit of the holders of the senior debt securities of such series, money or U.S. government obligations that will provide cash at the times and in the amounts as will be sufficient to pay principal, premium and interest when due on all the senior debt securities of such series to maturity or redemption;

•

we must deliver to the trustee an opinion of counsel that will provide that the beneficial owners of the senior debt securities of such series will not recognize income, gain or loss for U.S. federal income tax purposes as a result of the deposit and defeasance and will be subject to U.S. federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the deposit and defeasance had not occurred;

•

in the case of legal defeasance only, the opinion of counsel referred to in the clause above must be based on a ruling of the U.S. Internal Revenue Service or other change in applicable U.S. federal income tax law;

•

we must deliver to the trustee an officer’s certificate and an opinion of counsel each stating that all conditions precedent to exercising either defeasance option have been complied with;

•

such legal defeasance or covenant defeasance shall not result in a breach or violation of, or constitute a default under, any material agreement or instrument to which we are a party or by which we are bound; and

•

no default shall have occurred and be continuing.

Concerning the Trustee

The U.S. Bank Trust Company, National Association (or any other trustee as set forth in a resolution of the board of directors of the Company, an officer’s certificate or a supplemental indenture pursuant to

TABLE OF CONTENTS

GLOBAL SECURITIES

Book-Entry, Delivery and Form

Unless we indicate differently in any applicable prospectus supplement or free writing prospectus, the securities initially will be issued in book-entry form and represented by one or more global notes or global securities, or, collectively, global securities. The global securities issued in United States Dollars will be deposited with, or on behalf of, The Depository Trust Company, New York, New York, as depositary, or DTC, and registered in the name of Cede & Co., the nominee of DTC. The global securities issued in Euros or any other foreign currency will be deposited with, or on behalf of, a common depositary and registered in the name of the nominee of the common depositary for the accounts of either Euroclear or Clearstream. Unless and until it is exchanged for individual certificates evidencing securities under the limited circumstances described below, a global security may not be transferred except as a whole by the depositary to its nominee or by the nominee to the depositary, or by the depositary or its nominee to a successor depositary or to a nominee of the successor depositary.

DTC has advised us that it is:

•

a limited-purpose trust company organized under the New York Banking Law;

•

a “banking organization” within the meaning of the New York Banking Law;

•

a member of the Federal Reserve System;

•

a “clearing corporation” within the meaning of the New York Uniform Commercial Code; and

•

a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act.

DTC holds securities that its participants deposit with DTC. DTC also facilitates the settlement among its participants of securities transactions, such as transfers and pledges, in deposited securities through electronic computerized book-entry changes in participants’ accounts, thereby eliminating the need for physical movement of securities certificates. “Direct participants” in DTC include securities brokers and dealers, including underwriters, banks, trust companies, clearing corporations and other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation, or DTCC. DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available to others, which we sometimes refer to as indirect participants, that clear through or maintain a custodial relationship with a direct participant, either directly or indirectly. The rules applicable to DTC and its participants are on file with the SEC.

Purchases of securities under the DTC system must be made by or through direct participants, which will receive a credit for the securities on DTC’s records. The ownership interest of the actual purchaser of a security, which we sometimes refer to as a beneficial owner, is in turn recorded on the direct and indirect participants’ records. Beneficial owners of securities will not receive written confirmation from DTC of their purchases. However, beneficial owners are expected to receive written confirmations providing details of their transactions, as well as periodic statements of their holdings, from the direct or indirect participants through which they purchased securities. Transfers of ownership interests in global securities are to be accomplished by entries made on the books of participants acting on behalf of beneficial owners. Beneficial owners will not receive certificates representing their ownership interests in the global securities, except under the limited circumstances described below.

To facilitate subsequent transfers, all global securities deposited by direct participants with DTC will be registered in the name of DTC’s partnership nominee, Cede & Co., or such other name as may be requested by an authorized representative of DTC. The deposit of securities with DTC and their registration in the name of Cede & Co. or such other nominee will not change the beneficial ownership of the securities. DTC has no knowledge of the actual beneficial owners of the securities. DTC’s records reflect only the identity of the direct participants to whose accounts the securities are credited, which may or may not be the beneficial owners. The participants are responsible for keeping account of their holdings on behalf of their customers.

So long as the securities are in book-entry form, you will receive payments and may transfer securities only through the facilities of the applicable depositary and its direct and indirect participants. We will

TABLE OF CONTENTS

maintain an office or agency in the location specified in the prospectus supplement for the applicable securities, where notices and demands in respect of the securities and the indentures may be delivered to us and where certificated securities may be surrendered for payment, registration of transfer or exchange.

Conveyance of notices and other communications by DTC to direct participants, by direct participants to indirect participants and by direct participants and indirect participants to beneficial owners will be governed by arrangements among them, subject to any legal requirements in effect from time to time.

Redemption notices will be sent to DTC with respect to debt securities issued in United States Dollars. If less than all of the securities of a particular series are being redeemed, DTC’s practice is to determine by lot the amount of the interest of each direct participant in the securities of such series to be redeemed.

Neither DTC nor Cede & Co. (or such other DTC nominee) will consent or vote with respect to the securities. Under its usual procedures, DTC will mail an omnibus proxy to us as soon as possible after the record date. The omnibus proxy assigns the consenting or voting rights of Cede & Co. to those direct participants to whose accounts the securities of such series are credited on the record date, identified in a listing attached to the omnibus proxy.

So long as securities are in book-entry form, we will make payments on those securities to the depositary or its nominee, as the registered owner of such securities, by wire transfer of immediately available funds. If securities are issued in definitive certificated form under the limited circumstances described below and unless if otherwise provided in the description of the applicable securities herein or in the applicable prospectus supplement, we will have the option of making payments by check mailed to the addresses of the persons entitled to payment or by wire transfer to bank accounts in the United States designated in writing to the applicable trustee or other designated party at least 15 days before the applicable payment date by the persons entitled to payment, unless a shorter period is satisfactory to the applicable trustee or other designated party.

Redemption proceeds, distributions and dividend payments on the securities issued and payable in United States Dollars will be made to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC. DTC’s practice is to credit direct participants’ accounts upon DTC’s receipt of funds and corresponding detail information from us on the payment date in accordance with their respective holdings shown on DTC records. Payments by participants to beneficial owners will be governed by standing instructions and customary practices, as is the case with securities held for the account of customers in bearer form or registered in “street name.” Those payments will be the responsibility of participants and not of DTC or us, subject to any statutory or regulatory requirements in effect from time to time. Payment of redemption proceeds, distributions and dividend payments to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC, is our responsibility, disbursement of payments to direct participants is the responsibility of DTC, and disbursement of payments to the beneficial owners is the responsibility of direct and indirect participants.

Except under the limited circumstances described below, purchasers of securities will not be entitled to have securities registered in their names and will not receive physical delivery of securities. Accordingly, each beneficial owner of debt securities issued and payable in United States Dollars must rely on the procedures of DTC and its participants to exercise any rights under the securities and the indentures.

The laws of some jurisdictions may require that some purchasers of securities take physical delivery of securities in definitive form. Those laws may impair the ability to transfer or pledge beneficial interests in securities.

DTC may discontinue providing its services as securities depositary with respect to the securities at any time by giving reasonable notice to us. Under such circumstances, in the event that a successor depositary is not obtained, securities certificates are required to be printed and delivered.

As noted above, beneficial owners of a particular series of securities generally will not receive certificates representing their ownership interests in those securities. However, if:

•

DTC notifies us that it is unwilling or unable to continue as a depositary for the global security or securities representing such series of securities or if DTC ceases to be a clearing agency registered

TABLE OF CONTENTS

under the Exchange Act at a time when it is required to be registered and a successor depositary is not appointed within 90 days of the notification to us or of our becoming aware of DTC’s ceasing to be so registered, as the case may be;

•

we determine, in our sole discretion, not to have such securities represented by one or more global securities; or

•

an Event of Default has occurred and is continuing with respect to such series of securities,

we will prepare and deliver certificates for such securities in exchange for beneficial interests in the global securities. Any beneficial interest in a global security that is exchangeable under the circumstances described in the preceding sentence will be exchangeable for securities in definitive certificated form registered in the names that the depositary directs. It is expected that these directions will be based upon directions received by the depositary from its participants with respect to ownership of beneficial interests in the global securities.

Euroclear and Clearstream

If so provided in the applicable prospectus supplement, you may hold interests in a global security through Clearstream Banking S.A., which we refer to as “Clearstream,” or Euroclear Bank S.A./N.V., as operator of the Euroclear System, which we refer to as “Euroclear,” either directly if you are a participant in Clearstream or Euroclear or indirectly through organizations which are participants in Clearstream or Euroclear. Clearstream and Euroclear will hold interests on behalf of their respective participants through customers’ securities accounts in the names of Clearstream and Euroclear, respectively, on the books of their respective U.S. depositaries, which in turn will hold such interests in customers’ securities accounts in such depositaries’ names on DTC’s books.

Clearstream and Euroclear are securities clearance systems in Europe. Clearstream and Euroclear hold securities for their respective participating organizations and facilitate the clearance and settlement of securities transactions between those participants through electronic book-entry changes in their accounts, thereby eliminating the need for physical movement of certificates.

Payments, deliveries, transfers, exchanges, notices and other matters relating to beneficial interests in global securities owned through Euroclear or Clearstream must comply with the rules and procedures of those systems. Transactions between participants in Euroclear or Clearstream, on one hand, and other participants in DTC, on the other hand, are also subject to DTC’s rules and procedures.

Investors will be able to make and receive through Euroclear and Clearstream payments, deliveries, transfers and other transactions involving any beneficial interests in global securities held through those systems only on days when those systems are open for business. Those systems may not be open for business on days when banks, brokers and other institutions are open for business in the United States.

Cross-market transfers between participants in DTC, on the one hand, and participants in Euroclear or Clearstream, on the other hand, will be effected through DTC in accordance with the DTC’s rules on behalf of Euroclear or Clearstream, as the case may be, by their respective U.S. depositaries; however, such cross-market transactions will require delivery of instructions to Euroclear or Clearstream, as the case may be, by the counterparty in such system in accordance with the rules and procedures and within the established deadlines (European time) of such system. Euroclear or Clearstream, as the case may be, will, if the transaction meets its settlement requirements, deliver instructions to its U.S. depositary to take action to effect final settlement on its behalf by delivering or receiving interests in the global securities through DTC, and making or receiving payment in accordance with normal procedures for same-day fund settlement. Participants in Euroclear or Clearstream may not deliver instructions directly to their respective U.S. depositaries.

Due to time zone differences, the securities accounts of a participant in Euroclear or Clearstream purchasing an interest in a global security from a direct participant in DTC will be credited, and any such crediting will be reported to the relevant participant in Euroclear or Clearstream, during the securities settlement processing day (which must be a business day for Euroclear or Clearstream) immediately following the settlement date of DTC. Cash received in Euroclear or Clearstream as a result of sales of interests in a global security by or through a participant in Euroclear or Clearstream to a direct participant in DTC will be

TABLE OF CONTENTS

received with value on the settlement date of DTC but will be available in the relevant Euroclear or Clearstream cash account only as of the business day for Euroclear or Clearstream following DTC’s settlement date.

Other

The information in this section of this prospectus concerning DTC, Clearstream, Euroclear and their respective book-entry systems has been obtained from sources that we believe to be reliable, but we and the trustee do not take responsibility for this information. This information has been provided solely as a matter of convenience. The rules and procedures of DTC, Clearstream and Euroclear are solely within the control of those organizations and could change at any time. Neither we nor the trustee nor any agent of ours or of the trustee has any control over those entities and none of us takes any responsibility for their activities. You are urged to contact DTC, Clearstream and Euroclear or their respective participants directly to discuss those matters. In addition, although we expect that DTC, Clearstream and Euroclear will perform the foregoing procedures, none of them is under any obligation to perform or continue to perform such procedures and such procedures may be discontinued at any time. None of we, the trustee nor any agent of ours or the trustee will have any responsibility for the performance or nonperformance by DTC, Clearstream and Euroclear or their respective participants of these or any other rules or procedures governing their respective operations.

TABLE OF CONTENTS

PLAN OF DISTRIBUTION

We may sell the securities from time to time offered by this prospectus:

•

to or through underwriting syndicates represented by managing underwriters;

•

to or through one or more underwriters without a syndicate;

•

through agents;

•

through dealers for public offering and sale by them;

•

directly to investors; or

•

through a combination of any of the foregoing methods of sale.

The accompanying prospectus supplement will set forth the terms of the offering of the securities and the method of distribution and will identify any firms acting as underwriters, dealers or agents in connection with the offering, including:

•

the name or names of any underwriters, dealers or agents;

•

the public offering price of such securities;

•

any underwriting discounts and other items constituting compensation to underwriters, dealers or agents;

•

the proceeds to us from that sale; and

•

any securities exchange or market on which such securities may be listed.

If we use underwriters in the offering and sale of the securities, the securities will be acquired by the underwriters for their own account and may be resold from time to time in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. The securities may be either offered to the public through underwriting syndicates represented by managing underwriters or by underwriters without a syndicate. Unless otherwise set forth in the accompanying prospectus supplement, the obligations of the underwriters to purchase the securities will be subject to certain conditions precedent and the underwriters will be obligated to purchase all the securities of a series if any are purchased. Only those underwriters identified in the accompanying prospectus supplement are deemed to be underwriters in connection with the securities offered in such prospectus supplement.

We may sell the securities directly or through agents designated by us from time to time. Any agent involved in the offer or sale of the securities in respect of which this prospectus is delivered will be named, and any commissions payable by us to such agent will be set forth, in the prospectus supplement. Unless otherwise indicated in the accompanying prospectus supplement, any such agent will be acting on a best efforts basis for the period of its appointment.

If a dealer is utilized in the sale of any of the securities, we will sell the securities to the dealer, as principal. The dealer may then resell the securities to the public at varying prices to be determined by such dealer at the time of resale.

The distribution of the securities may be effected from time to time in one or more transactions at a fixed price or prices, which may be changed, or at prices determined as the accompanying prospectus supplement specifies. In connection with the sale of the securities, underwriters, dealers or agents may be deemed to have received compensation from us in the form of underwriting discounts or commissions and also may receive commissions from purchasers for whom they may act as agent. Underwriters may sell the securities to or through dealers, and the dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters or commissions from the purchasers for whom they may act as agent. Some of the underwriters, dealers or agents who participate in the distribution of the securities may engage in other transactions with, and perform other services for, us or our subsidiaries in the ordinary course of business.

Underwriters, dealers and agents participating in the distribution of the securities may be deemed to be underwriters within the meaning of the Securities Act, and any discounts and commissions they receive and

TABLE OF CONTENTS

any profit they realize on the resale of the securities may be deemed to be underwriting discounts and commissions under the Securities Act. We will provide in the accompanying prospectus supplement information regarding any underwriting discounts or other compensation that we pay to underwriters, dealers or agents in connection with the offering of the securities.

Underwriters and their controlling persons, dealers and agents may be entitled, under agreements entered into with us, to indemnification against and contribution toward certain civil liabilities, including liabilities under the Securities Act.

We may authorize agents or underwriters to solicit offers by certain types of institutions to purchase the securities from us at the public offering price set forth in the accompanying prospectus supplement pursuant to delayed delivery contracts providing for payment and delivery on a specified date in the future. Such contracts will be subject only to those conditions set forth in the accompanying prospectus supplement, and the accompanying prospectus supplement will set forth the commissions payable for solicitation of such contracts.

Each series of securities will be a new issue of securities with no established trading market. Any underwriters to whom we sell the securities for public offering and sale may make a market in such securities, but such underwriters will not be obligated to do so and may discontinue any market making at any time without notice. No assurance can be given as to the liquidity of the trading market for any securities.

The securities may or may not be listed on a national securities exchange. During and after an offering through underwriters, the underwriters may purchase and sell the securities in the open market. These transactions may include short sales, stabilizing transactions and purchases to cover positions created by short sales. Short sales involve the sale by the underwriters of a greater number of securities than they are required to purchase in an offering. Stabilizing transactions consist of bids or purchases made for the purpose of preventing or retarding a decline in the market price of the securities while an offering is in progress. The underwriters also may impose a penalty bid. This occurs when a particular underwriter repays to the underwriters a portion of the underwriting discount received by it because the underwriters have repurchased securities sold by or for the account of that underwriter in stabilizing or short-covering transactions. These activities by the underwriters may stabilize, maintain or otherwise affect the market price of the securities. As a result, the price of the securities may be higher than the price that otherwise might exist in the open market. If these activities are commenced, they may be discontinued by the underwriters at any time.

Certain of the underwriters who participate in the distribution of the securities, and their affiliates, may perform various commercial banking and investment banking services for us and our affiliates from time to time in the ordinary course of business.

TABLE OF CONTENTS

LEGAL MATTERS

The validity of, and certain other matters of United States federal and New York State law with respect to the securities offered by this prospectus will be passed upon for us by Latham & Watkins LLP, New York, New York. The validity of, and certain other matters of German law with respect to the securities offered by this prospectus by Amphenol Technologies Holding GmbH will be passed upon for us by Latham & Watkins LLP, Frankfurt, Germany. Any underwriter, dealer or agent will be advised about other legal issues relating to any specific offering of the securities by its own legal counsel.

EXPERTS

The financial statements of Amphenol Corporation, incorporated by reference in this prospectus by reference from Amphenol Corporation’s Annual Report on Form 10-K for the year ended December 31, 2025, and the effectiveness of Amphenol Corporation’s internal control over financial reporting, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report. Such financial statements are incorporated by reference in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

TABLE OF CONTENTS

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution

The following statement sets forth the anticipated expenses (other than underwriting discounts and commissions) of Amphenol Corporation and Amphenol Technologies Holding GmbH (collectively, the “Registrants”) in connection with the offering of the securities registered under this Registration Statement. All such expenses are estimates, other than the registration fee payable to the SEC, and will be borne by the Registrants.

SEC registration fee	$	(1)
Printing fees and expenses		(2)
Legal fees and expenses		(2)
Accounting fees and expenses		(2)
Trustee fees and expenses		(2)
Rating Agency fees		(2)
Miscellaneous expenses		(2)
Total	$	(2)

(1)

The Registrants are registering an indeterminate amount of securities under this Registration Statement, and in accordance with Rules 456(b) and 457(r) under the Securities Act, the Registrants are deferring payment of all of the registration fee.

(2)

These fees are calculated based on the securities offered and the number of issuances and accordingly cannot be estimated at this time.

Item 15. Indemnification of Directors and Officers

Amphenol Corporation

Subsection (a) of Section 145 of the General Corporation Law of the State of Delaware, or the DGCL, empowers a corporation to indemnify any person who was or is a party or who is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative (other than an action by or in the right of the corporation) by reason of the fact that the person is or was a director, officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by the person in connection with such action, suit or proceeding if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe the person’s conduct was unlawful.

Subsection (b) of Section 145 empowers a corporation to indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action or suit by or in the right of the corporation to procure a judgment in its favor by reason of the fact that the person acted in any of the capacities set forth above, against expenses (including attorneys’ fees) actually and reasonably incurred by the person in connection with the defense or settlement of such action or suit if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, except that no indemnification shall be made in respect of any claim, issue or matter as to which such person shall have been adjudged to be liable to the corporation unless and only to the extent that the Court of Chancery or the court in which such action or suit was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court shall deem proper.

II-1

TABLE OF CONTENTS

Section 145 further provides that to the extent a director or officer of a corporation has been successful on the merits or otherwise in the defense of any action, suit or proceeding referred to in subsections (a) and (b) of Section 145, or in defense of any claim, issue or matter therein, such person shall be indemnified against expenses (including attorneys’ fees) actually and reasonably incurred by such person in connection therewith; that indemnification provided for by Section 145 shall not be deemed exclusive of any other rights to which the indemnified party may be entitled; and the indemnification provided for by Section 145 shall, unless otherwise provided when authorized or ratified, continue as to a person who has ceased to be a director, officer, employee or agent and shall inure to the benefit of such person’s heirs, executors and administrators. Section 145 also empowers the corporation to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise against any liability asserted against such person and incurred by such person in any such capacity, or arising out of his status as such, whether or not the corporation would have the power to indemnify such person against such liabilities under Section 145.

Section 102(b)(7) of the DGCL provides that a corporation’s certificate of incorporation may contain a provision eliminating or limiting the personal liability of a director to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, provided that such provision shall not eliminate or limit the liability of:

(i)

a director or officer for any breach of the director’s or officer’s duty of loyalty to the corporation or its stockholders;

(ii)

a director or officer for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law;

(iii)

a director under Section 174 of the DGCL;

(iv)

a director or officer for any transaction from which the director or officer derived an improper personal benefit; or

(v)

an officer in any action by or in the right of the corporation.

Any underwriting agreement or distribution agreement that the registrant enters into with any underwriters or agents involved in the offering or sale of any securities registered hereby may require such underwriters or dealers to indemnify the registrant, some or all of its directors and officers and its controlling persons, if any, for specified liabilities, which may include liabilities under the Securities Act.

Article Seven of the Amphenol Corporation’s Restated Certificate of Incorporation provides that, except as otherwise provided by the Delaware General Corporation Law as the same exists or may hereafter be amended, no director of Amphenol Corporation shall be personally liable to Amphenol Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director. In addition, Article Eight of Amphenol Corporation’s Restated Certificate of Incorporation provides that, to the fullest extent permitted by the Delaware General Corporation Law, Amphenol Corporation shall indemnify any current or former director or officer of Amphenol Corporation and may, at the discretion of the Board of Directors, indemnify any current or former employee or agent of Amphenol Corporation against all expenses, judgments, fines and amounts paid in settlement actually and reasonably incurred by him in connection with any threatened, pending or completed action, suit or proceeding brought by or in the right of Amphenol Corporation or otherwise, to which he was or is a party by reason of his current or former position with Amphenol Corporation or by reason of the fact that he is or was serving, at the request of Amphenol Corporation, as a director, officer, partner, trustee, employee or agent of another corporation, partnership, joint venture, trust or other enterprise.

Article IV of Amphenol Corporation’s Fifth Amended and Restated By-Laws provides for indemnification of Amphenol Corporation’s directors, officers, employees and other agents to the extent and under the circumstances permitted by the DGCL.

Amphenol Corporation has also entered into indemnification agreements with all of its directors and executive officers and intends to enter into indemnification agreements with future directors and executive

II-2

TABLE OF CONTENTS

officers of Amphenol Corporation. The indemnification agreements provide for indemnification to the fullest extent permitted by law and for advancement of expenses. Amphenol Corporation maintains liability insurance for its officers and directors.

Amphenol Technologies Holding GmbH

Under German law, the managing directors (Geschäftsführer) of Amphenol Technologies Holding GmbH are subject to statutory duties and potential liability towards Amphenol Technologies Holding GmbH and, in limited cases, towards third parties. In particular, German law provides for claims against managing directors for breaches of duty, including breaches of organizational and oversight duties, violations of capital maintenance rules and, where applicable, failure to comply with insolvency-related filing and payment restrictions. These duties are mandatory in nature and cannot be excluded or limited in advance by contract or corporate action.

Consistent with German law, advance indemnities or releases granted by Amphenol Technologies Holding GmbH that would effectively exempt a managing director from liability for breaches of duty owed to Amphenol Technologies Holding GmbH are restricted and impermissible to the extent they would contravene mandatory law, capital maintenance rules or creditor protection. Any waiver or settlement of claims by the shareholders generally requires a shareholders’ resolution and is, in any event, ineffective where claims fall within the scope of section 43(3) of the German Limited Liability Companies Act (Gesetz betreffend die Gesellschaften mit beschränkter Haftung) (e.g., prohibited distributions) and may be challengeable or voidable where creditor-protective or insolvency law considerations so require. Any discharge (Entlastung) granted by the shareholders’ meeting is subject to these limitations and does not waive unknown claims where and to the extent mandatory provisions preclude such waiver or where the resolution is challengeable. The effectiveness and scope of any discharge or waiver is determined under German corporate and insolvency law. Likewise, indemnities may not cover fines, penalties or damages resulting from intentional misconduct, and may not be used to effect payments that would infringe the capital maintenance regime applicable to Amphenol Technologies Holding GmbH. Moreover, exculpatory shareholder instructions or consent can release managing directors from internal liability where duly given, but not where mandatory creditor-protective rules (including sections 30 and 33 of the German Limited Liability Companies Act (Gesetz betreffend die Gesellschaften mit beschränkter Haftung)) are implicated.

Subject to the foregoing limitations and to the fullest extent permitted under applicable law, Amphenol Technologies Holding GmbH may, in appropriate cases, hold harmless its current and former managing directors and other persons acting in a comparable capacity for third-party claims asserted against them in connection with their service for Amphenol Technologies Holding GmbH and may cover or advance reasonable defense costs incurred in connection with such claims. An internal indemnification may be available, in particular, where third-party claims arise in the absence of a breach of organizational duties (by analogy to section 670 of the German Civil Code (Bürgerliches Gesetzbuch), and, in cases of joint liability with Amphenol Technologies Holding GmbH, under section 426 of the German Civil Code (Bürgerliches Gesetzbuch)), and subject to corporate benefit, capital maintenance and insolvency constraints.

Indemnification and advancement in all cases remains subject to, and would not be available to the extent it would violate, mandatory provisions of German law, including without limitation rules on capital maintenance, creditor protection and insolvency law. In particular, indemnification cannot be provided for intentional breaches of duty, and payments that would infringe capital maintenance rules or constitute prohibited payments after the occurrence of insolvency triggers are not permitted. Moreover, any indemnification is subject to potential avoidance and clawback under applicable insolvency laws. Payments or reimbursements made in contravention of these rules may be subject to avoidance and clawback under insolvency law. Where insolvency has occurred, the managing director’s mass-preserving payment restrictions under section 15b of the German Insolvency Code (Insolvenzordnung) apply.

Amphenol Technologies Holding GmbH maintains directors’ and officers’ liability insurance for the benefit of its managing directors and certain other covered persons on customary market terms. Such insurance generally provides coverage for civil liability risks arising from acts or omissions in the insured persons’ service for Amphenol Technologies Holding GmbH, including defense costs, in each case subject

II-3

TABLE OF CONTENTS

to the terms, conditions, limitations and exclusions of the relevant policy. Coverage under D&O insurance is typically not available for intentional misconduct and other excluded conduct as set out in the policy and applicable insurance law.

Item 16. Exhibits

	Exhibit No.			Description
	1.1			Form of Underwriting Agreement**
	4.1			Indenture, dated as of March 16, 2023, between Amphenol Corporation and U.S. Bank Trust Company, National Association, as Trustee (incorporated by reference to Exhibit 4.1 to Amphenol Corporation’s Registration Statement on Form S-3, dated March 16, 2023, File No. 333- 270605)
	4.2			Form of Indenture between Amphenol Technologies Holding GmbH, as issuer, Amphenol Corporation, as guarantor, and U.S. Bank Trust Company, National Association, as Trustee*
	4.3			Form of Amphenol Corporation Global Note**
	4.4			Form of Amphenol Technologies Holding GmbH Global Note**
	5.1			Opinion of Latham & Watkins LLP with respect to certain New York and Delaware law matters*
	5.2			Opinion of Latham & Watkins LLP with respect to certain German law matters*
	22			List of Issuers of Guaranteed Securities*
	23.1			Consent of Deloitte & Touche LLP, independent registered public accounting firm*
	23.2			Consent of Latham & Watkins LLP (included in Exhibits 5.1 and 5.2)*
	24.1			Power of Attorney of certain officers and directors of Amphenol Corporation and Amphenol Technologies Holding GmbH (incorporated by reference to the signature page hereof)
	25.1			Form T-1, Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of U.S. Bank Trust Company, National Association, as Trustee under the Indenture for Amphenol Corporation’s Senior Debt Securities*
	25.2			Form T-1, Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of U.S. Bank Trust Company, National Association, as Trustee under the Indenture for Amphenol Technologies Holding GmbH’s Senior Debt Securities*
	107			Filing Fee table*

Filed herewith.

To be filed by amendment or as an exhibit to a Current Report on Form 8-K and incorporated by reference in the registration statement.

Item 17. Undertakings

(a)

The undersigned Registrants hereby undertake:

(1)

To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i)

To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

(ii)

To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Securities and Exchange Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement; and

II-4

TABLE OF CONTENTS

(iii)

To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

provided, however, that paragraphs (a)(1)(i), (a)(1)(ii), and (a)(1)(iii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Securities and Exchange Commission by the Registrants pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is a part of the registration statement.

(2)

That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3)

To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(5)

That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(A)

Each prospectus filed by the Registrants pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(B)

Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii), or (x) for the purpose of providing the information required by Section 10(a) of the Securities Act of 1933 shall be deemed to be part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the applicable issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date.

(6)

That, for the purpose of determining liability of the registrants under the Securities Act of 1933 to any purchaser in the initial distribution of the securities:

The undersigned Registrants undertake that in a primary offering of securities of the undersigned Registrants pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned Registrants will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i)

Any preliminary prospectus or prospectus of the undersigned Registrants relating to the offering required to be filed pursuant to Rule 424;

(ii)

Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned Registrants or used or referred to by the undersigned Registrants;

(iii)

The portion of any other free writing prospectus relating to the offering containing material

II-5

TABLE OF CONTENTS

information about the undersigned Registrants or their securities provided by or on behalf of the undersigned Registrants; and

(iv)

Any other communications that is an offer in the offering made by the undersigned Registrants to the purchaser.

(b)

The undersigned Registrants hereby undertake that, for purposes of determining any liability under the Securities Act of 1933, each filing of each Registrant’s annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(h)

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, each Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act of 1933 and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrants of expenses incurred or paid by a director, officer or controlling person of the Registrants in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrants will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

II-6

TABLE OF CONTENTS

POWER OF ATTORNEY

Each of the undersigned officers and directors of the registrant whose signature appears below hereby constitutes and appoints R. Adam Norwitt, Craig A. Lampo, Lance D’Amico, Mark C. Turner and Michael R. Ivas, and each of them singly (with full power to each of them to act alone), as his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution in each of them, for him or her and in his or her name, place and stead, and in any and all capacities, to file and sign any and all amendments, including post-effective amendments, to this registration statement and any other registration statement for the same offering that is to be effective under 462(b) of the Securities Act of 1933, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith and about the premises as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or their substitute or substitutes may lawfully do or cause to be done by virtue hereof. This power of attorney shall be governed by and construed with the laws of the State of Delaware and applicable federal securities laws.

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed below by the following persons on behalf of Amphenol Corporation in the capacities and on the dates indicated.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Wallingford, State of Connecticut on the 2nd day of March, 2026.

AMPHENOL CORPORATION

/s/ R. Adam Norwitt

R. Adam Norwitt
President, Chief Executive Officer and Director

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ R. Adam Norwitt R. Adam Norwitt	President, Chief Executive Officer and Director (Principal Executive Officer)	March 2, 2026
/s/ Craig A. Lampo Craig A. Lampo	Executive Vice President and Chief Financial Officer (Principal Financial Officer)	March 2, 2026
/s/ Michael R. Ivas Michael R. Ivas	Principal Accounting Officer	March 2, 2026
/s/ Martin H. Loeffler Martin H. Loeffler	Chairman of the Board of Directors	March 2, 2026
/s/ David P. Falck David P. Falck	Presiding Director	March 2, 2026
/s/ Nancy A. Altobello Nancy A. Altobello	Director	March 2, 2026

II-7

TABLE OF CONTENTS

POWER OF ATTORNEY

Each of the undersigned officers and directors of the registrant whose signature appears below hereby constitutes and appoints Craig A. Lampo, Lance D’Amico and Günther Josef Spielbauer, and each of them singly (with full power to each of them to act alone), as his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution in each of them, for him or her and in his or her name, place and stead, and in any and all capacities, to file and sign any and all amendments, including post-effective amendments, to this registration statement and any other registration statement for the same offering that is to be effective under 462(b) of the Securities Act of 1933, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith and about the premises as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or their substitute or substitutes may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed below by the following persons on behalf of Amphenol Technologies Holding GmbH in the capacities and on the dates indicated.

SIGNATURES

AMPHENOL TECHNOLOGIES HOLDING GMBH

/s/ Lance D’Amico

Lance D’Amico
Managing Director

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Craig A. Lampo Craig A. Lampo	Managing Director	March 2, 2026
/s/ Lance D’Amico Lance D’Amico	Managing Director	March 2, 2026
/s/ Günther Josef Spielbauer Günther Josef Spielbauer	Managing Director	March 2, 2026

II-9

	Page
ABOUT THIS PROSPECTUS		1
NOTICE TO PROSPECTIVE INVESTORS IN THE EUROPEAN ECONOMIC AREA		3
FORWARD-LOOKING STATEMENTS		4
WHERE YOU CAN FIND MORE INFORMATION		4
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE		5
RISK FACTORS		6
AMPHENOL CORPORATION		7
AMPHENOL TECHNOLOGIES HOLDING GMBH		8
ENFORCEMENT OF CIVIL LIABILITIES		9
USE OF PROCEEDS		11
GUARANTOR DISCLOSURES		12
DESCRIPTION OF SENIOR DEBT SECURITIES		13
DESCRIPTION OF GUARANTEES		25
GLOBAL SECURITIES		26
PLAN OF DISTRIBUTION		30
LEGAL MATTERS		32
EXPERTS		32