X0306 4 2022-02-25 0 0001652044 Alphabet Inc. GOOG 0001738007 O'Toole Amie Thuener C/O ALPHABET INC. 1600 AMPHITHEATRE PKWY MOUNTAIN VIEW CA 94043 0 1 0 0 VP, Chief Accounting Officer Class C Capital Stock 2022-02-25 4 C 0 53 0.00 A 1190 D Class C Google Stock Units 2022-02-25 4 C 0 53 0.00 D 1112 D Class C Google Stock Units 2022-02-25 4 F 0 53 2653.47 D 1059 D Class A Common Stock 447 D Class C Google Stock Units 953 D Vesting of Google Stock Units ("GSUs") grant of which was previously reported in Form 4. Class C GSUs entitle the Reporting Person to receive one share of Alphabet Inc. Class C Capital Stock for each share underlying the GSU as GSU vests. 1/12th of GSU grant vested on January 25, 2022 and an additional 1/12th of the grant will vest monthly thereafter until the GSU are fully vested, subject to continued employment on such vesting dates. Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's GSUs. 1/12th of GSU grant will vest on the 25th day of the month 12 months after the Grant Date and an additional 1/12th will vest monthly on the 25th day of the month until the units are fully vested, subject to continued employment on such vesting dates. /s/ Valentina Margulis, as Attorney-in-Fact for Amie Thuener O'Toole 2022-02-28