X0609 4 2026-09-21 0001703399 Sea Ltd SE 0001965706 Chen Jingye true C/O 1 FUSIONOPOLIS PLACE, #17-10, GALAXIS SINGAPORE U0 138522 SINGAPORE false true false false CPO, Shopee true Class A ordinary shares 2026-09-21 4 S false 3800 100.77 D 56200 I By BVI entity Class A ordinary shares 2026-09-21 4 S false 12792 101.86 D 43408 I By BVI entity Class A ordinary shares 2026-09-21 4 S false 13294 102.68 D 30114 I By BVI entity Class A ordinary shares 2026-09-21 4 S false 114 103.33 D 30000 I By BVI entity Class A ordinary shares 2026-09-22 4 S false 10488 102.85 D 19512 I By BVI entity Class A ordinary shares 2026-09-22 4 S false 19512 103.82 D 0 I By BVI entity Class A ordinary shares 9126574 D The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by a BVI entity controlled by the Reporting Person on June 10, 2026. Represents the weighted average price of shares sold at prices that ranged from $100.31 to $101.30. 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 $101.31 to $102.308. Represents the weighted average price of shares sold at prices that ranged from $102.31 to $103.30. Represents the weighted average price of shares sold at prices that ranged from $103.32 to $103.36. Represents the weighted average price of shares sold at prices that ranged from $102.42 to $103.40. Represents the weighted average price of shares sold at prices that ranged from $103.42 to $104.40. /s/ Mark Tang, attorney-in-fact for Jingye Chen 2026-09-23