Sea Limited 2026 年 10 月 20 日向员工发送内部邮件

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of October 2026

Commission File Number: 001-38237

Sea Limited

1 Fusionopolis Place, #17-10, Galaxis

Singapore 138522

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒   Form 40-F ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

EXPLANATORY NOTE

On October 20, 2026, on the occasion of the ninth anniversary of the initial public offering of Sea Limited (“Sea”), Forrest Li, Chairman and Chief Executive Officer of Sea, sent an email to all Sea employees. A copy of the email is attached as Exhibit 99.1.

Forward-Looking Statements

This Form 6-K contains forward-looking statements. These statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as “may,” “could,” “will,” “expect,” “anticipate,” “aim,” “future,” “intend,” “plan,” “believe,” “estimate,” “likely to,” “potential,” “confident,” “guidance,” and similar statements. Among other things, statements that are not historical facts, including statements about Sea’s beliefs and expectations, the business, financial and market outlook, and projections from its management in this Form 6-K, as well as Sea’s strategic and operational plans, contain forward-looking statements. Sea may also make written or oral forward-looking statements in its periodic reports to the U.S. Securities and Exchange Commission (the “SEC”), in its annual report to shareholders, in press releases, and other written materials, and in oral statements made by its officers, directors, or employees to third parties. Forward-looking statements involve inherent risks and uncertainties. A number of factors could cause actual results to differ materially from those contained in any forward-looking statement, including but not limited to the following: Sea’s goals and strategies; its future business development, financial condition, financial results, and results of operations; the expected growth in, and market size of, the e-commerce, digital financial services, and digital entertainment industries in the markets where it operates, including segments within those industries; expected changes or guidance in its revenue, costs or expenditures; its ability to continue to source, develop and offer new and attractive online games and to offer other engaging Garena content; the expected growth of its Shopee, Monee and Garena businesses; its expectations regarding growth in its user base, level of engagement, and monetization; its ability to continue to develop new technologies and/or upgrade its existing technologies; growth and trends of its markets and competition in its industries; government policies and regulations relating to its industries, including the effects of any government orders or actions on its businesses; general economic, political, social and business conditions in its markets; and the impact of widespread health developments. Further information regarding these and other risks is included in Sea’s filings with the SEC. You should not rely on forward-looking statements as predictions of future events. All information provided in this Form 6-K is as of the date of this Form 6-K, and Sea undertakes no obligation to update any forward-looking statement, except as required under applicable law.

EXHIBIT INDEX

Exhibit 99.1 — Sea Limited Email to Employees, dated October 20, 2026

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: October 20, 2026