X0508 4 2026-02-20 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 2026-02-20 4 A 0 28809 0 A 91417 D Class A Common Stock 2026-02-20 4 F 0 6533 146.13 D 84884 D Class A Common Stock 2026-02-23 4 S 0 800 141.03 D 84084 D Class A Common Stock 2026-02-23 4 S 0 1700 141.94 D 82384 D Class A Common Stock 2026-02-23 4 S 0 875 142.73 D 81509 D Class A Common Stock 2026-02-23 4 S 0 600 143.90 D 80909 D Class A Common Stock 2026-02-23 4 S 0 600 144.79 D 80309 D Class A Common Stock 2026-02-23 4 S 0 600 146.23 D 79709 D Class A Common Stock 2026-02-23 4 S 0 300 147.38 D 79409 D Class A Common Stock 2026-02-23 4 S 0 100 150.03 D 79309 D These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of Class A common stock. The RSUs shall vest quarterly over a 1-year period, with 1/4th of the RSUs vesting on each of May 20, August 20, November 20, and February 20, subject to the Reporting Person continuing to be a service provider through each such date. 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 September 11, 2025. The sales were executed in multiple trades at prices ranging from $140.44 to $141.43. 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 (4) to (10) to this Form 4. The sales were executed in multiple trades at prices ranging from $141.49 to $142.46. The sales were executed in multiple trades at prices ranging from $142.49 to $143.25. The sales were executed in multiple trades at prices ranging from $143.54 to $144.34. The sales were executed in multiple trades at prices ranging from $144.54 to $145.16. The sales were executed in multiple trades at prices ranging from $145.84 to $146.68. The sales were executed in multiple trades at prices ranging from $146.99 to $147.81. /s/ Julie Rogers, Attorney-in-Fact 2026-02-24