Dimensional Fund Advisors LP Acquires 5.3% Stake in Innospec Inc (IOSP)

On July 14, 2026, Dimensional Fund Advisors LP filed a Schedule 13G with the SEC, reporting a new 5.3% ownership stake in Innospec Inc (IOSP). As of the event date on June 30, 2026, the firm beneficially owns 1,305,038 shares of common stock. Dimensional Fund Advisors LP acts as an investment adviser to various registered investment companies, trusts, and separate accounts, collectively referred to as "the Funds." The filing indicates that Dimensional holds sole voting power over 1,279,717 shares and sole dispositive power over the full 1,305,038 shares. While Dimensional is deemed the beneficial owner under SEC rules due to its investment management role, the firm explicitly disclaims beneficial ownership of these securities, noting that the shares are owned by the Funds. The acquisition was made in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. This filing marks an increase from a previously reported 0.0% position, establishing Dimensional as a significant institutional shareholder in Innospec Inc.