Wellington Management Group LLP Reports 0.2% Stake in Apellis Pharmaceuticals, Inc.

Wellington Management Group LLP, along with its affiliates Wellington Group Holdings LLP and Wellington Investment Advisors Holdings LLP, filed a Schedule 13G/A on April 7, 2026, regarding their holdings in Apellis Pharmaceuticals, Inc. (APLS). The filing reveals that the group collectively beneficially owns 249,635 shares of Common Stock, representing a 0.2% ownership stake in the company. This reflects an increase from a previous reported position of zero shares. The shares are held of record by various investment advisers under the Wellington umbrella, including Wellington Management Company LLP, for the benefit of their clients. Of the total shares, the reporting entities hold shared voting power over 239,469 shares and shared dispositive power over all 249,635 shares. The filing indicates that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing control of the issuer. Consequently, the filers have certified that they own 5% or less of the class of securities.