Allegion

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-18 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Allegion plc (ALLE) CIK: 0001579241 --- Reporting Owner --- Name: Ilardi David S. CIK: 0001915040 Role: Officer (President-Amer & SVP-Allegion) --- Non-Derivative Transactions --- [Transaction #1] Security: Ordinary Shares Date: 2026-08-18 | Code: M (Exercise of derivative) Shares: +549 | Price: $71.83 Total Value: $39,437.42 Shares Owned After: 14,301 | Ownership: D (Direct) [Transaction #2] Security: Ordinary Shares Date: 2026-08-18 | Code: S (Open market sale) Shares: -549 | Price: $161.09 Total Value: $88,438.41 Shares Owned After: 13,752 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Stock Option (Right to Buy) Date: 2026-08-18 | Code: M (Exercise of derivative) Shares: -549 | Price: $0.00 Exercisable: N/A | Expires: 2027-02-13 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] A stock option that vested in equal annual installments on February 13, 2018, February 13, 2019, and February 13, 2020, and is exercisable. --- Footnotes (Complete Index) --- F1: A stock option that vested in equal annual installments on February 13, 2018, February 13, 2019, and February 13, 2020, and is exercisable. --- Signature --- /s/ /s/ Tandra M. Foster, Attorney-In-Fact (2026-08-19)