FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * DE MAYNADIER PATRICK D   2. Issuer Name and Ticker or Trading Symbol CHURCH & DWIGHT CO INC /DE/ [CHD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP, Gen. Counsel & Secretary (Last) (First) (Middle) PRINCETON SOUTH CORPORATE PARK, 500 CHARLES EWING BOULEVARD 3. Date of Earliest Transaction (Month/Day/Year) 01/21/2019 (Street) EWING, NJ 08628 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/21/2019   J(1)   9,731.092 D $ 0 9,731.092 D   Common Stock               3,843 I Savings and Profit Sharing Plan (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option

$ 30.96

01/21/2019

J(1)

55,740

06/17/2016

06/17/2023

Common Stock

55,740 (3)

$ 0

55,740

D

Stock Option

$ 34.81

01/21/2019

J(1)

44,120

06/16/2017

06/16/2024

Common Stock

44,120 (3)

$ 0

44,120

D

Stock Option

$ 49.62

01/21/2019

J(1)

22,817.718

06/20/2019

06/20/2026

Common Stock

22,817.718 (3)

$ 0

45,642.282

D

Stock Option

$ 53.75

01/21/2019

J(1)

9,702.784

06/19/2020

06/19/2027

Common Stock

9,702.784 (3)

$ 0

48,537.216

D

Stock Option

$ 50.28

01/21/2019

J(1)

10,925.628

06/18/2021

06/18/2028

Common Stock

10,925.628 (3)

$ 0

54,654.372

D

Stock Option

$ 41.915

01/21/2019

J(1)

38,980

06/22/2018

06/22/2025

Common Stock

38,980 (3)

$ 0

38,980

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
DE MAYNADIER PATRICK D PRINCETON SOUTH CORPORATE PARK 500 CHARLES EWING BOULEVARD EWING, NJ 08628			EVP, Gen. Counsel & Secretary

Signatures

/s/ Cristina Paradiso, attorney-in-fact for Patrick de Maynadier		01/23/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Transferred pursuant to a marital settlement agreement executed on January 21, 2019 (the "MSA").
(2)	Pursuant to the terms of the MSA, the Reporting Person's spouse is entitled to 50% of the value of each distribution to the Reporting Person from the Church & Dwight Co., Inc. Savings and Profit Sharing Plan for Salaried Employees (the "Plan"). The Reporting Person disclaims beneficial ownership of the shares held by the Plan except to the extent of his pecuniary interest therein.
(3)	Pursuant to the terms of the MSA, the Reporting Person is deemed to hold these options for the benefit of the Reporting Person's spouse, who is entitled to the shares issued upon exercise of such option. Such options are only exercisable at the direction of the Reporting Person's spouse.

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