X0508 4 2025-12-08 0 0001713445 Reddit, Inc. RDDT 0001924253 Slowe Christopher Brian C/O REDDIT, INC. 303 2ND STREET, SOUTH TOWER, 5TH FLOOR SAN FRANCISCO CA 94107 0 1 0 0 Chief Technology Officer 1 Class A Common Stock 2025-12-08 4 C 0 12000 0 A 187694 D Class A Common Stock 2025-12-08 4 S 0 200 226.47 D 187494 D Class A Common Stock 2025-12-08 4 S 0 300 227.30 D 187194 D Class A Common Stock 2025-12-08 4 S 0 300 228.62 D 186894 D Class A Common Stock 2025-12-08 4 S 0 600 230.23 D 186294 D Class A Common Stock 2025-12-08 4 S 0 2300 231.47 D 183994 D Class A Common Stock 2025-12-08 4 S 0 1300 232.25 D 182694 D Class A Common Stock 2025-12-08 4 S 0 1300 233.38 D 181394 D Class A Common Stock 2025-12-08 4 S 0 1700 234.33 D 179694 D Class A Common Stock 2025-12-08 4 S 0 1041 235.27 D 178653 D Class A Common Stock 2025-12-08 4 S 0 3170 236.65 D 175483 D Class A Common Stock 2025-12-08 4 S 0 1789 237.26 D 173694 D Class A Common Stock 20184 I By The Slowe Family Trust dated January 26, 2012 Stock Option (Right to Buy) 1.93 2025-12-08 4 M 0 12000 0 D 2026-02-25 Class B Common Stock 12000 45464 D Class B Common Stock 2025-12-08 4 M 0 12000 0 A Class A Common Stock 12000 12000 D Class B Common Stock 2025-12-08 4 C 0 12000 0 D Class A Common Stock 12000 0 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 9, 2025. The sales were executed in multiple trades at prices ranging from $225.97 to $226.96. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price within the ranges set forth in footnotes (2) to (12) to this Form 4. The sales were executed in multiple trades at prices ranging from $227.19 to $227.35. The sales were executed in multiple trades at prices ranging from $228.52 to $228.71. The sales were executed in multiple trades at prices ranging from $229.69 to $230.67. The sales were executed in multiple trades at prices ranging from $230.84 to $231.81. The sales were executed in multiple trades at prices ranging from $231.87 to $232.69. The sales were executed in multiple trades at prices ranging from $232.88 to $233.84. The sales were executed in multiple trades at prices ranging from $233.89 to $234.87. The sales were executed in multiple trades at prices ranging from $234.91 to $235.55. The sales were executed in multiple trades at prices ranging from $235.97 to $236.95. The sales were executed in multiple trades at prices ranging from $236.97 to $237.82. The stock option is fully vested and currently exercisable. The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. /s/ Julie Rogers, Attorney-in-Fact 2025-12-10