X0306 4 2021-05-10 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 2021-05-10 4 C 0 13889 0.00 A 13889 D Class A Common Stock 2021-05-10 4 S 0 200 2286.00 D 13689 D Class A Common Stock 2021-05-10 4 S 0 700 2288.3614 D 12989 D Class A Common Stock 2021-05-10 4 S 0 100 2290.07 D 12889 D Class A Common Stock 2021-05-10 4 S 0 300 2289.35 D 12589 D Class A Common Stock 2021-05-10 4 S 0 968 2292.0593 D 11621 D Class A Common Stock 2021-05-10 4 S 0 800 2293.1265 D 10821 D Class A Common Stock 2021-05-10 4 S 0 915 2294.1522 D 9906 D Class A Common Stock 2021-05-10 4 S 0 100 2294.92 D 9806 D Class A Common Stock 2021-05-10 4 S 0 692 2296.4864 D 9114 D Class A Common Stock 2021-05-10 4 S 0 500 2297.586 D 8614 D Class A Common Stock 2021-05-10 4 S 0 906 2298.8757 D 7708 D Class A Common Stock 2021-05-10 4 S 0 700 2300.0686 D 7008 D Class A Common Stock 2021-05-10 4 S 0 700 2301.2886 D 6308 D Class A Common Stock 2021-05-10 4 S 0 700 2302.0314 D 5608 D Class A Common Stock 2021-05-10 4 S 0 300 2303.1533 D 5308 D Class A Common Stock 2021-05-10 4 S 0 600 2304.3817 D 4708 D Class A Common Stock 2021-05-10 4 S 0 700 2305.55 D 4008 D Class A Common Stock 2021-05-10 4 S 0 5 2306.48 D 4003 D Class A Common Stock 2021-05-10 4 S 0 200 2308.08 D 3803 D Class A Common Stock 2021-05-10 4 S 0 952 2309.4361 D 2851 D Class A Common Stock 2021-05-10 4 S 0 575 2310.6709 D 2276 D Class A Common Stock 2021-05-10 4 S 0 891 2311.6423 D 1385 D Class A Common Stock 2021-05-10 4 S 0 485 2312.841 D 900 D Class A Common Stock 2021-05-10 4 S 0 400 2313.7625 D 500 D Class A Common Stock 2021-05-10 4 S 0 200 2315.415 D 300 D Class A Common Stock 2021-05-10 4 S 0 300 2319.7033 D 0 D Class B Common Stock 0.00 2021-05-10 4 C 0 13889 0.00 D Class A Common Stock 13889 19140688 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 $2,285.78 to $2,286.77, 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 (2) through (25) 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 $2,288.01 to $2,289.00, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,289.06 to $2,290.05, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,291.69 to $2,292.68, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,292.77 to $2,293.76, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,293.80 to $2,294.79, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,296.00 to $2,296.99, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,297.16 to $2,298.15, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,298.33 to $2,299.32, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,299.55 to $2,230.54, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,300.73 to $2,301.72, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,301.73 to $2,302.72, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,302.74 to $2,303.73, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,303.96 to $2,304.95, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,305.23 to $2,306.22, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,306.48 to $2,307.47, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,307.87 to $2,308.86, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,309.15 to $2,310.14, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,310.15 to $2,311.14, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,311.15 to $2,312.14, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,312.36 to $2,313.35, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,313.53 to $2,314.52, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,315.04 to $2,316.03, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2,319.67 to $2,320.66, 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 10, 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 2021-05-11