Form 4 Filing for Richard A. Dierker

This filing details a Form 4 submission by Richard A. Dierker, President and CEO of CHURCH & DWIGHT CO INC /DE/. On October 15, 2026, Dierker acquired 41.958 shares of Phantom Stock, which convert to Common Stock on a 1-for-1 basis. These phantom shares were obtained through the company's Deferred Compensation Plan and will be settled in cash. The acquisition price was $103.08 per share, bringing the total post-transaction shares to 18,286.665. The filing was signed by Cristina Paradiso as attorney-in-fact on October 16, 2026.