BlackRock, Inc. Increases Stake in SELLAS LIFE SCIENCES GROUP INC

BlackRock, Inc. has filed a Schedule 13G with the SEC, disclosing an increased ownership in SELLAS LIFE SCIENCES GROUP INC. As of September 30, 2025, BlackRock, Inc. beneficially owns 5,686,886 shares, representing 5.4% of the outstanding common stock. This marks an increase of 1,096,613 shares from their previous holdings, with the value of the stake rising by 22.19% to $12,283,673.76. The filing indicates that BlackRock, Inc. has sole voting power over 5,604,491 shares and sole dispositive power over all 5,686,886 shares. The filing also notes that various persons have the right to receive dividends or direct the sale of the shares, but no single person's interest exceeds 5% of the total outstanding shares.