Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * D'AMICO LANCE E 2. Issuer Name and Ticker or Trading Symbol AMPHENOL CORP /DE/ [APH] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Sr. VP, Secretary & GenCounsel (Last) (First) (Middle) C/O AMPHENOL CORPORATION, 358 HALL AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 08/18/2025 (Street) WALLINGFORD, CT 06492 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 08/18/2025 M 100,000 A $22.5525 176,400 D Class A Common Stock 08/18/2025 S 100,000 D $110.6003(1)(2) 76,400 D Class A Common Stock 08/18/2025 M 30,000 A $22.3725 106,400 I By Lance E. D'Amico 2024 Irrevocable Trust Class A Common Stock 08/18/2025 S 30,000 D $110.8083(1)(3) 76,400 I By Lance E. D'Amico 2024 Irrevocable Trust Class A Common Stock 25,000 I By Lance E. D'Amico 2025 GRAT #1

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option

$22.5525

08/18/2025

M

100,000

05/21/2021

05/21/2030

Class A Common Stock

100,000

$ 0

220,000

D

Stock Option

$22.3725

08/18/2025

M

30,000

05/23/2020

05/23/2029

Class A Common Stock

30,000

$ 0

40,000

I

By Lance E. D'Amico 2024 Irrevocable Trust

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
D'AMICO LANCE E C/O AMPHENOL CORPORATION 358 HALL AVENUE WALLINGFORD, CT 06492			Sr. VP, Secretary & GenCounsel

Signatures

/s/ Lance E. D'Amico		08/19/2025
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
(2)	This transaction was executed in multiple trades ranging from $110.5000 to $110.8050.
(3)	This transaction was executed in multiple trades raging from $110.7100 to $110.9300.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.