X0609 4 2026-09-09 0001703399 Sea Ltd SE 0001729171 Ye Gang true C/O 1 FUSIONOPOLIS PLACE, #17-10, GALAXIS SINGAPORE U0 138522 SINGAPORE true true false false COO true Class A ordinary shares 2026-09-09 4 S false 12000 108.41 D 746792 I By BVI entity Class A ordinary shares 2026-09-09 4 S false 6300 109.21 D 740492 I By BVI entity Class A ordinary shares 2026-09-09 4 S false 1200 110.57 D 739292 I By BVI entity Class A ordinary shares 2026-09-09 4 S false 500 111.39 D 738792 I By BVI entity Class A ordinary shares 2026-09-10 4 S false 16099 107.92 D 722693 I By BVI entity Class A ordinary shares 2026-09-10 4 S false 3901 108.54 D 718792 I By BVI entity Class A ordinary shares 20396405 D The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by a BVI entity controlled by the Reporting Person on September 4, 2025. Represents the weighted average price of shares sold at prices that ranged from $107.86 to $108.83. 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 $108.86 to $109.69. Represents the weighted average price of shares sold at prices that ranged from $110.15 to $110.78. Represents the weighted average price of shares sold at prices that ranged from $110.99 to $111.83. Represents the weighted average price of shares sold at prices that ranged from $107.35 to $108.34. Represents the weighted average price of shares sold at prices that ranged from $108.35 to $108.75. /s/ Mark Tang, attorney-in-fact for Gang Ye 2026-09-11