X0508 4 2024-04-30 0 0001652044 Alphabet Inc. GOOG 0001665419 ARNOLD FRANCES C/O ALPHABET INC. 1600 AMPHITHEATRE PKWY MOUNTAIN VIEW CA 94043 1 0 0 0 1 Class C Capital Stock 2024-04-30 4 S 0 80 167.38 D 15551 D Class C Google Stock Units 2250 D Class C Google Stock Units 820 D Class C Google Stock Units 1700 D Class C Google Stock Units 120 D The Class C Google Stock Units (GSU) entitle the Reporting Person to receive one share of Alphabet Inc. Class C Capital Stock for each share underlying the GSU as GSU vest. 1/48th of GSUs vested on July 25, 2021 and an additional 1/48th of GSUs will vest monthly thereafter until the GSUs are fully vested, subject to continued service on the Board on the applicable vesting dates. 1/48th of GSUs vested on July 25, 2022 and an additional 1/48th of GSUs will vest monthly thereafter until the GSUs are fully vested, subject to continued service on the Board on the applicable vesting dates. 1/48th of GSUs vested on July 25, 2023 and an additional 1/48th of GSUs will vest monthly thereafter until the GSUs are fully vested, subject to continued service on the Board on the applicable vesting dates. 1/4th of GSUs vested on January 8, 2020 and an additional 1/48th of the grant vests monthly thereafter until the GSUs are fully vested, subject to continued service on the Board on the applicable vesting dates. Transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the Reporting Person on February 23, 2023. /s/ Valentina Margulils, as Attorney-in-Fact for Frances H. Arnold 2024-04-30