X0609 4 2026-04-14 0001703399 Sea Ltd SE 0001965706 Chen Jingye true C/O 1 FUSIONOPOLIS PLACE, #17-10, GALAXIS SINGAPORE SINGAPORE U0 138522 SINGAPORE false true false false CPO, Shopee true Class A ordinary shares 2026-04-14 4 S false 320 85.8 D 226080 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 39 87.25 D 226041 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 149 88.42 D 225892 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 241 89.17 D 225651 I By BVI entity Class A ordinary shares 2026-04-14 4 S false 51 89.87 D 225600 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 59 86.28 D 225541 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 99 87.72 D 225442 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 189 88.09 D 225253 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 298 89.5 D 224955 I By BVI entity Class A ordinary shares 2026-04-15 4 S false 155 90.42 D 224800 I By BVI entity Class A ordinary shares 9075774 D The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by a BVI entity controlled by the Reporting Person on August 28, 2025. Represents the weighted average price of shares sold at prices that ranged from $85.68 to $85.87. 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 $86.94 to $87.57. Represents the weighted average price of shares sold at prices that ranged from $87.69 to $88.675. Represents the weighted average price of shares sold at prices that ranged from $88.68 to $89.67. Represents the weighted average price of shares sold at prices that ranged from $89.68 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 $88.77. Represents the weighted average price of shares sold at prices that ranged from $89.11 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 Jingye Chen 2026-04-16