X0508 4 2025-11-20 0 0001713445 Reddit, Inc. RDDT 0001924278 Lee Benjamin Seong C/O REDDIT, INC. 303 2ND STREET, SOUTH TOWER, 5TH FLOOR SAN FRANCISCO CA 94107 0 1 0 0 Chief Legal Officer 1 Class A Common Stock 2025-11-20 4 F 0 9405 187.78 D 74040 D Class A Common Stock 2025-11-24 4 S 0 200 186.46 D 73840 D Class A Common Stock 2025-11-24 4 S 0 100 187.63 D 73740 D Class A Common Stock 2025-11-24 4 S 0 100 188.91 D 73640 D Class A Common Stock 2025-11-24 4 S 0 1500 191.29 D 72140 D Class A Common Stock 2025-11-24 4 S 0 1900 192.49 D 70240 D Class A Common Stock 2025-11-24 4 S 0 800 193.38 D 69440 D Class A Common Stock 2025-11-24 4 S 0 1367 194.67 D 68073 D Class A Common Stock 2025-11-24 4 S 0 460 195.45 D 67613 D These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 3, 2024. The sales were executed in multiple trades at prices ranging from $186.44 to $186.48. 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 (3) to (8) to this Form 4. The sales were executed in multiple trades at prices ranging from $190.92 to $191.91. The sales were executed in multiple trades at prices ranging from $192.17 to $193.13. The sales were executed in multiple trades at prices ranging from $193.18 to $193.73. The sales were executed in multiple trades at prices ranging from $194.18 to $195.00. The sales were executed in multiple trades at prices ranging from $195.26 to $195.67. /s/ Julie Rogers, Attorney-in-Fact 2025-11-24