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 June 2019

Commission File Number: 001-36397

Weibo Corporation

(Registrant’s Name)

8/F, QIHAO Plaza, 8 Xinyuan South Road

Chaoyang District, Beijing 100027

People’s Republic of China

(Address of Principal Executive Offices)

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

Form 20-F x      Form 40-F o

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): o

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): o

SIGNATURES

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.

EXHIBIT INDEX

Exhibit 99.1

Weibo Announces Pricing of US$800 Million Notes Offering

BEIJING, CHINA, June 26, 2019—Weibo Corporation (“Weibo” or the “Company”) (Nasdaq: WB), a leading social media in China, today announced the pricing of its public offering of US$800 million aggregate principal amount of its 3.500% notes due 2024. The notes have been registered under the U.S. Securities Act of 1933, as amended, and are expected to be listed on the Singapore Exchange Securities Trading Limited. The Company expects to receive net proceeds from the offering of approximately US$793 million, after deducting underwriting discounts and commissions and estimated offering expenses. The Company intends to use the net proceeds from the offering for general corporate purposes.

The sole bookrunner of the offering is Goldman Sachs (Asia) L.L.C. The co-managers of the offering are The Hongkong and Shanghai Banking Corporation Limited and Industrial and Commercial Bank of China (Asia) Limited.

The Company has filed an automatic shelf registration statement on Form F-3 (including a base prospectus) and a related preliminary prospectus supplement with the U.S. Securities and Exchange Commission (the “SEC”) for the offering of the notes. When available, the final prospectus supplement for the offering of the notes will be filed with the SEC. The offering is being made only by means of the prospectus supplement and accompanying base prospectus. Before you invest, you should read the prospectus supplement and accompanying base prospectus and other documents that the Company has filed with the SEC for more complete information about the Company and the offering. You may obtain these documents free of charge by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the Company or any underwriter or dealer participating in the offering will arrange to send an investor the prospectus supplement and accompanying base prospectus if the investor makes such request by calling Goldman Sachs & Co. toll-free at +1 (866) 471-2526.

This announcement is not an offer of the securities for sale in the United States and shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of, these securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The securities referred to herein have not been and will not be registered under the applicable securities laws of any jurisdiction outside of the United States.

About Weibo

Weibo is a leading social media for people to create, share, and discover content online. Weibo combines the means of public self-expression in real time with a powerful platform for social interaction, content aggregation, and content distribution. Any user can create and post a feed and attach multi-media and long-form content. User relationships on Weibo may be asymmetric; any user can follow any other user and add comments to a feed while reposting. This simple, asymmetric, and distributed nature of Weibo allows an original feed to become a live viral conversation stream.

Weibo enables its advertising and marketing customers to promote their brands, products, and services to users. Weibo offers a wide range of advertising and marketing solutions to companies of all sizes. The Company generates a substantial majority of its revenues from the sale of advertising and marketing services, including the sale of social display advertisement and promoted marketing offerings. Designed with a “mobile first” philosophy, Weibo displays content in a simple information feed format and offers native advertisement that conform to the information feed on our platform. To support the mobile format, Weibo has developed and is continuously refining its social interest graph recommendation engine, which enables its customers to perform people marketing and target audiences based on user demographics, social relationships, interests, and behaviors, to achieve greater relevance, engagement, and marketing effectiveness.

Safe Harbor Statement

This press release 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 “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates,” “confident,” and similar statements. Among other things, the description of the proposed offering in this announcement contains forward-looking statements. Weibo may also make forward-looking statements in its periodic reports to the SEC, 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 important factors could cause actual results to differ materially from those contained in any forward-looking statement. Potential risks and uncertainties include, but are not limited to, Weibo’s limited operating history in certain new businesses; failure to grow active user base and the level of user engagement; the uncertain regulatory landscape in China; fluctuations in the Company’s quarterly operating results; the Company’s reliance on advertising and marketing sales for a majority of its revenues; failure to successfully develop, introduce, drive adoption of or monetize new features and products; failure to compete effectively for advertising and marketing spending; failure to successfully integrate acquired businesses; risks associated with the Company’s investments, including equity pick-up and impairment; failure to compete successfully against new entrants and established industry competitors; changes in the macro-economic environment, including the depreciation of the Renminbi; and adverse changes in economic and political policies of the PRC government and its impact on the Chinese economy. Further information regarding these and other risks is included in Weibo’s annual report on Form 20-F, registration statement on Form F-3, and other documents filed with or furnished to the SEC. All information provided in this press release is current as of the date hereof, and Weibo assumes no obligation to update such information, except as required under applicable law.

Contacts

Investor Relations

Weibo Corporation

Phone: +86 (10) 5898-3336

Email: ir@staff.weibo.com