X0306 4 2021-05-07 0 0001652044 Alphabet Inc. GOOG 0001295032 Brin Sergey C/O ALPHABET INC. 1600 AMPHITHEATRE PKWY MOUNTAIN VIEW CA 94043 1 0 1 0 Class A Common Stock 2021-05-07 4 C 0 13889 0.00 A 13889 D Class A Common Stock 2021-05-07 4 S 0 300 2348.12 D 13589 D Class A Common Stock 2021-05-07 4 S 0 500 2349.354 D 13089 D Class A Common Stock 2021-05-07 4 S 0 843 2351.0345 D 12246 D Class A Common Stock 2021-05-07 4 S 0 1377 2352.1361 D 10869 D Class A Common Stock 2021-05-07 4 S 0 904 2353.2031 D 9965 D Class A Common Stock 2021-05-07 4 S 0 1589 2354.1913 D 8376 D Class A Common Stock 2021-05-07 4 S 0 1024 2355.1986 D 7352 D Class A Common Stock 2021-05-07 4 S 0 953 2356.538 D 6399 D Class A Common Stock 2021-05-07 4 S 0 1701 2357.4828 D 4698 D Class A Common Stock 2021-05-07 4 S 0 869 2358.6924 D 3829 D Class A Common Stock 2021-05-07 4 S 0 400 2359.6625 D 3429 D Class A Common Stock 2021-05-07 4 S 0 200 2360.865 D 3229 D Class A Common Stock 2021-05-07 4 S 0 600 2362.40 D 2629 D Class A Common Stock 2021-05-07 4 S 0 100 2363.31 D 2529 D Class A Common Stock 2021-05-07 4 S 0 431 2364.6772 D 2098 D Class A Common Stock 2021-05-07 4 S 0 892 2365.92 D 1206 D Class A Common Stock 2021-05-07 4 S 0 600 2367.1367 D 606 D Class A Common Stock 2021-05-07 4 S 0 506 2368.1023 D 100 D Class A Common Stock 2021-05-07 4 S 0 100 2370.14 D 0 D Class B Common Stock 0.00 2021-05-07 4 C 0 13889 0.00 D Class A Common Stock 13889 19154577 D Each share of Class A Common Stock was issued upon the conversion of one share of Class B Common Stock at the election of Reporting Person. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,347.58 to $2,348.57, inclusive.The Reporting Person undertakes to provide to any security holder of Alphabet Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) through (18) to this Form 4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,348.95 to $2,349.94, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,350.53 to $2,351.52, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,351.59 to $2,352.58, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,352.62 to $2,353.61, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,354.79 to $2,355.78, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,355.97 to $2,356.96, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,357.05 to $2,358.04, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,358.17 to $2,359.16, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,359.45 to $2,360.44, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,360.57 to $2,361.56, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,361.98 to $2,362.97, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,363.31 to $2,364.30, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,364.42 to $2,365.41, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,365.50 to $2,366.49, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,366.57 to $2,367.56, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,367.81 to $2,368.80, inclusive. All shares are exercisable as of the transaction date. There is no expiration date for the Issuer's Class B Common Stock. Form 4 Filing 1 of 2: Related transactions effected by the Reporting Person on May 7, 2021 are reported on additional Form 4s. All transactions were effected pursuant to a Rule 10b5-1 Trading Plan adopted by the Reporting Person. /s/ Valentina Margulis, as Attorney-in-Fact for Sergey Brin 2021-05-10