X0609 4 2026-09-21 0001703399 Sea Ltd SE 0002113214 Wang Yanjun true C/O 1 FUSIONOPOLIS PLACE, #17-10, GALAXIS SINGAPORE U0 138522 SINGAPORE false true false false CCO and GC true Class A ordinary shares 2026-09-21 4 S false 100 100.69 D 98680 I By BVI entity Class A ordinary shares 2026-09-21 4 S false 616 101.69 D 98064 I By BVI entity Class A ordinary shares 2026-09-21 4 S false 484 102.66 D 97580 I By BVI entity Class A ordinary shares 2026-09-22 4 S false 365 102.85 D 97215 I By BVI entity Class A ordinary shares 2026-09-22 4 S false 835 103.8 D 96380 I By BVI entity Class A ordinary shares 1033642 D The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by a BVI entity controlled by the Reporting Person on March 26, 2026. Represents the weighted average price of shares sold at prices that ranged from $100.28 to $101.26. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4. Represents the weighted average price of shares sold at prices that ranged from $101.28 to $102.27. Represents the weighted average price of shares sold at prices that ranged from $102.28 to $103.28. Represents the weighted average price of shares sold at prices that ranged from $102.41 to $103.35. Represents the weighted average price of shares sold at prices that ranged from $103.41 to $104.40. /s/ Emily Tan, attorney-in-fact for Yanjun Wang 2026-09-23