X0306 4 2021-05-18 0001579241 Allegion plc ALLE 0001589039 Eckersley Timothy P C/O SCHLAGE LOCK COMPANY LLC 11819 N. PENNSYLVANIA STREET CARMEL IN 46032 1 Sr. VP-Allegion International Ordinary Shares 2021-05-18 4 M 0 3195 54.125 A 37233.907 D Ordinary Shares 2021-05-18 4 S 0 3195 138.99 D 34038.907 D Stock Option (Right to Buy) 54.125 2021-05-18 4 M 0 3195 0 D 2024-03-11 Ordinary Shares 3195 3196 D This transaction was executed in multiple sales all at $138.99 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or any security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected regarding this footnote. Includes acquisition of shares through a dividend reinvestment plan. A stock option that vested in equal annual installments on March 11, 2015, March 11, 2016 and March 11, 2017, and is exercisable. /s/ Hatsuki Miyata, Attorney-In-Fact 2021-05-20