X0609 4 2026-04-14 0001703399 Sea Ltd SE 0001729171 Ye Gang true C/O 1 FUSIONOPOLIS PLACE, #17-10, GALAXIS SINGAPORE SINGAPORE U0 138522 SINGAPORE true true false false COO true Class A ordinary shares 2026-04-14 4 S false 2800 85.87 D 337200 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 1300 86.91 D 335900 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 1300 88.28 D 334600 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 3600 89.02 D 331000 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 1000 89.8 D 330000 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 763 86.26 D 329237 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 1439 87.73 D 327798 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 2112 88.1 D 325686 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 3800 89.5 D 321886 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 1886 90.42 D 320000 I By BVI entity Class A ordinary shares 22396405 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 $85.61 to $86.56. 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 $86.61 to $87.57. Represents the weighted average price of shares sold at prices that ranged from $87.70 to $88.57. Represents the weighted average price of shares sold at prices that ranged from $88.61 to $89.59. Represents the weighted average price of shares sold at prices that ranged from $89.61 to $90.14. Represents the weighted average price of shares sold at prices that ranged from $85.91 to $86.76. Represents the weighted average price of shares sold at prices that ranged from $86.92 to $87.90. Represents the weighted average price of shares sold at prices that ranged from $87.92 to $88.79. Represents the weighted average price of shares sold at prices that ranged from $89.08 to $89.90. Represents the weighted average price of shares sold at prices that ranged from $89.91 to $90.81. /s/ Mark Tang, attorney-in-fact for Gang Ye 2026-04-16