Church & Dwight (CHD)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-30 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: CHURCH & DWIGHT CO INC /DE/ (CHD) CIK: 0000313927 --- Reporting Owner --- Name: Buchert Brian D CIK: 0001918805 Role: Officer (EVP of Strategy, M&A, and BP) --- Derivative Transactions --- [Transaction #1] Security: Phantom Stock Date: 2026-09-30 | Code: A (Grant or award) Shares: +5.804 | Price: $94.22 Shares Owned After: 720.68 | Ownership: D (Direct) Footnotes: [F1] The phantom stock shares convert to common stock on a 1-for-1 basis. [F2] The phantom stock shares were acquired under the Church & Dwight Co., Inc. Deferred Compensation Plan and are to be settled in cash at such time as prescribed by the Plan. [F2] The phantom stock shares were acquired under the Church & Dwight Co., Inc. Deferred Compensation Plan and are to be settled in cash at such time as prescribed by the Plan. --- Footnotes (Complete Index) --- F1: The phantom stock shares convert to common stock on a 1-for-1 basis. F2: The phantom stock shares were acquired under the Church & Dwight Co., Inc. Deferred Compensation Plan and are to be settled in cash at such time as prescribed by the Plan. --- Signature --- /s/ /s/ Cristina Paradiso, attorney-in-fact for Brian D. Buchert (2026-10-01)