X0508 4 2025-12-15 0 0001713445 Reddit, Inc. RDDT 0001827011 Huffman Steve Ladd C/O REDDIT, INC. 303 2ND STREET, SOUTH TOWER, 5TH FLOOR SAN FRANCISCO CA 94107 1 1 1 0 CEO & President 1 Class A Common Stock 2025-12-15 4 M 0 18000 0 A 466576 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 200 214.62 D 466376 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 670 215.62 D 465706 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 1800 216.90 D 463906 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 3368 217.65 D 460538 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 2419 218.48 D 458119 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 1011 219.80 D 457108 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 800 220.51 D 456308 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 1600 221.86 D 454708 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 2000 222.72 D 452708 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 2612 223.99 D 450096 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 1320 224.62 D 448776 I By The XYZ Revocable Trust Class A Common Stock 2025-12-15 4 S 0 200 225.53 D 448576 I By The XYZ Revocable Trust Stock Option (Right to Buy) 25.29 2025-12-15 4 M 0 18000 0 D 2033-12-25 Class A Common Stock 18000 1351255 I By The XYZ Revocable Trust The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2025. The sales were executed in multiple trades at prices ranging from $214.17 to $215.07. 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 (13) to this Form 4. The sales were executed in multiple trades at prices ranging from $215.17 to $216.11. The sales were executed in multiple trades at prices ranging from $216.18 to $217.17. The sales were executed in multiple trades at prices ranging from $217.18 to $218.12. The sales were executed in multiple trades at prices ranging from $218.18 to $219.17. The sales were executed in multiple trades at prices ranging from $219.22 to $220.08. The sales were executed in multiple trades at prices ranging from $220.22 to $220.73. The sales were executed in multiple trades at prices ranging from $221.23 to $222.22. The sales were executed in multiple trades at prices ranging from $222.24 to $223.12. The sales were executed in multiple trades at prices ranging from $223.38 to $224.37. The sales were executed in multiple trades at prices ranging from $224.40 to $225.36. The sales were executed in multiple trades at prices ranging from $225.51 to $225.55. The option vests over five years on each quarterly anniversary of December 25, 2023, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date. /s/ Julie Rogers, Attorney-in-Fact 2025-12-17