AMPHENOL CORP /DE/ (APH) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-03 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: AMPHENOL CORP /DE/ (APH) CIK: 0000820313 --- Reporting Owner --- Name: D'AMICO LANCE E CIK: 0001383877 Role: Officer (EVP, Secretary & GenCounsel) --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Comm Stock Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: +50,000 | Price: $22.55 Total Value: $1,127,625.00 Shares Owned After: 107,065 | Ownership: D (Direct) [Transaction #2] Security: Class A Comm Stock Date: 2026-08-03 | Code: S (Open market sale) Shares: -50,000 | Price: $161.99 Total Value: $8,099,370.00 Shares Owned After: 57,065 | Ownership: D (Direct) Footnotes: [F1] 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. [F2] This transaction was executed in multiple trades ranging from $161.80 to $162.1210. [Transaction #3] Security: Class A Comm Stock Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: +40,000 | Price: $22.37 Total Value: $894,900.00 Shares Owned After: 40,000 | Ownership: I (Indirect) | Nature: By Lance E. D'Amico 2024 Irrevocable Trust [Transaction #4] Security: Class A Comm Stock Date: 2026-08-03 | Code: S (Open market sale) Shares: -40,000 | Price: $161.82 Total Value: $6,472,700.00 Shares Owned After: 0 | Ownership: I (Indirect) | Nature: By Lance E. D'Amico 2024 Irrevocable Trust Footnotes: [F1] 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. [F3] This transaction was executed in multiple trades ranging from $161.0600 to $162.0300. [Transaction #5] Security: Class A Comm Stock Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: +10,000 | Price: $22.55 Total Value: $225,525.00 Shares Owned After: 10,000 | Ownership: I (Indirect) | Nature: By Lance E. D'Amico 2024 Irrevocable Trust [Transaction #6] Security: Class A Comm Stock Date: 2026-08-03 | Code: S (Open market sale) Shares: -10,000 | Price: $161.82 Total Value: $1,618,175.00 Shares Owned After: 0 | Ownership: I (Indirect) | Nature: By Lance E. D'Amico 2024 Irrevocable Trust Footnotes: [F1] 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. [F3] This transaction was executed in multiple trades ranging from $161.0600 to $162.0300. --- Derivative Transactions --- [Transaction #1] Security: Stock Option Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: -50,000 | Price: $0.00 Exercisable: N/A | Expires: 2030-05-21 Shares Owned After: 0 | Ownership: D (Direct) [Transaction #2] Security: Stock Option Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: -40,000 | Price: $0.00 Exercisable: N/A | Expires: 2029-05-23 Shares Owned After: 0 | Ownership: I (Indirect) | Nature: By Lance E. D'Amico 2024 Irrevocable Trust [Transaction #3] Security: Stock Option Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: -10,000 | Price: $0.00 Exercisable: N/A | Expires: 2030-05-21 Shares Owned After: 70,000 | Ownership: I (Indirect) | Nature: By Lance E. D'Amico 2024 Irrevocable Trust --- Holdings --- [Holding #1] Security: Class A Common Stock Ownership: I (Indirect) [Holding #2] Security: Class A Common Stock Ownership: I (Indirect) --- Footnotes (Complete Index) --- F1: 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. F2: This transaction was executed in multiple trades ranging from $161.80 to $162.1210. F3: This transaction was executed in multiple trades ranging from $161.0600 to $162.0300. --- Signature --- /s/ /s/ Lance E. D'Amico (2026-08-05)