144 0001765539 XXXXXXXX LIVE 0001723690 Bilibili Inc. 001-38429 17th floor, Building 3, Guozheng Center No. 485 Zhengli Road Yangpu District, Shanghai F4 200433 86-21-25099255 Kami Sama Limited Affiliate American Depositary Shares, each representing one class Z ordinary share JPMORGAN SECURITIES LLC

383 Madison Avenue New York NY 10179

1000000 25210000.00 413764399 12/11/2025 NASDAQ American Depositary Shares, each representing one class Z ordinary share 03/28/2018 Founder shares Issuer N 1000000 03/28/2018 N/A Y In accordance with the interpretive letter from the staff of the SEC to Goldman Sachs &Co., dated December 20, 1999, and in the interpretive letter from the staff of the SEC to Bank of America, N.A. et al, dated December 1, 2011, on the date hereof, the Shareholder has entered into a variable prepaid forward transaction which relates to up to the aggregate number of American Depositary Shares ("ADSs") specified in Part 3(c) above. The variable prepaid forward transaction is with an unaffiliated bank. The transaction provides for a prepayment amount to the Shareholder based on the broker's initial hedging activity. The Shareholder pledged the ADSs subject to the transaction. Any initial hedging activity in connection with the transaction will be conducted by the broker named in Part 3(b). 12/11/2025 /s/ Yi Xu (on behalf of Kami Sama Limited)