<TABLE>
<CAPTION>
- ---------------- U.S. SECURITIES AND EXCHANGE COMMISSION ----------------------------
|F O R M 4| Washington, D.C. 20549 | OMB APPROVAL |
- ---------------- |--------------------------|
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP |OMB Number 3235-0287|
[ ] Check this box if |Expires: September 30,1998|
no longer Subject Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, |Estimated ave. burden |
to Section 16. Section 17(a) of the Public Utility Holding Company Act of 1935 or |hours per response.....0.5|
Section 30(f) of the Investment Company Act 1940 ----------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
|1.Name and Address of Reporting Person* |2.Issuer Name and Ticker or Trading Symbol |6.Relationship of Reporting Person to |
| | | Issuer (Check all Applicable) |
|Conish Mark G. |Church & Dwight Co., Inc. | |
| | of Reporting Person | Year |---(give title below) ---(Specify below)|
| | | Director 10% Owner |
|----------------------------------------|------------------------------------------------|--- --- |
| (Last) (First) (MI)|3.IRS or Soc. Sec. No. |4.Statement for Month/ | X Officer Other |
| | of Reporting Person | Year |---(give title below) ---(Specify below)|
| 469 North Harrison Street | (Voluntary) | | |
| | | December 1999 | |
| | | | Vice President Operations |
|----------------------------------------| |------------------------|----------------------------------------|
| (Street) | |5.If Amendment, Date of |7. Individual or Joint/Group Filing |
| | | Original (Month/Year) | (Check Applicable Line) |
| | | | |
|Princeton NJ 08540-5297| | | 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 |2.Transac- |3.Trans. |4.Security Acquired (A) or |5.Amount of |6. |7.Nature of Indirect|
| (Instr. 3) | tion Date | Code | Disposed of (D) | Securities |Own.| Beneficial |
| |(Mon/Day/Yr)|(Instr.8)| (Instr. 3, 4 & 5) | Beneficially |Form| Ownership |
| | |---------|-------------------------------| Owned at End of|(D) | (Instr. 4) |
| | | | | |(A) | | Month |or | |
| | |Code| V | Amount |(D) | Price | (Instr. 3 & 4) |(I) | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
|<S> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |
|Common Stock | 12/23/1999 | M | | 3400 | A | $9.5000| | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
|Common Stock | 12/23/1999 | S | | 3400 | D | $27.5000| 1100 | D | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
|Common Stock | | | | | | $.0000| 9928 | I |Prfit Shring/Sa |
| | | | | | | | | |ving Plan Trust |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
- ------------------------------------------------------------------------------------------------------------------------------------
Reminder: Report on a separate line for each class securities owned directly or indirectly. SEC 1474 (7-96)
*If the form is filed by more than one reporting person, see Instruction 4(b)(v).
PAGE: 1 OF 4
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
FORM 4 (continued) TABLE II - Derivative Securities Acquired, Disposed of, Beneficially Owned
(e.g., puts, calls, warrants, options, convertible security)
- ------------------------------------------------------------------------------------------------------------------------------------
|1.Title of|2.Conver-|3. |4.Tran- |5.Number of |6.Date |7.Title and Amount |8.Price of|9.Number |10. |11.Nature |
|Derivative|sion or |Trans| saction| Derivative |Exercisable| of Underlying |Derivative| of |Own.| of |
|Security |Exercise |Date | Code | Securities |and | Securities |Security |Derivative|Form|Indirect |
|(Instr. 3)|Price of |(Mon/|(Instr.8)| Acquired (A) or |Expiration | (Instr. 3 & 4) |(Instr. 5)|Securities|of |Beneficial|
| |Deriva- | Day/| | Disposed of (D) |Date | | |Benefi- |Deri|Ownership |
| |tive |Year)| | (Instr. 3, 4 & 5) |(Month/Day/| | |cially |Sec.|(Instr. 4)|
| |Security | | | | Year) | | |Owned at |Dir.| |
| | | | | |-----------|---------------------| |End of |(D) | |
| | | | | | | | |Amount or | |Month |or | |
| | | |---------|---------------------|Date |Exp. | Title |Number of | |(Instr. 4)|Ind.| |
| | | |Code| V | (A) | (D) |Exbl.|Date | |Shares | | |(I) | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|<S> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |
|Stock Opti| $9.5000|12/23| M | | | 3400|05/23|05/23|Common Sto| 3400| | 0| D | |
|on | | 1999| | | | | 1993| 2000|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $14.4375| | | | | |05/22|05/22|Common Sto| 2200| | 2200| D | |
|on | | | | | | | 1994| 2001|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $12.6250| | | | | |05/27|05/27|Common Sto| 2800| | 2800| D | |
|on | | | | | | | 1995| 2002|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $16.1250| | | | | |05/26|05/26|Common Sto| 3800| | 3800| D | |
|on | | | | | | | 1996| 2003|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $11.3125| | | | | |05/25|05/25|Common Sto| 9000| | 9000| D | |
|on | | | | | | | 1997| 2004|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $8.5625| | | | | |12/21|12/21|Common Sto| 12800| | 12800| D | |
|on | | | | | | | 1997| 2004|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $10.3125| | | | | |04/24|04/24|Common Sto| 20600| | 20600| D | |
|on | | | | | | | 1999| 2006|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $10.8125| | | | | |11/01|11/01|Common Sto| 19600| | 19600| D | |
|on | | | | | | | 1999| 2006|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $13.6250| | | | | |01/26|01/26|Common Sto| 17000| | 17000| D | |
|on | | | | | | | 2001| 2008|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|Stock Opti| $20.7500| | | | | |05/06|05/06|Common Sto| 11200| | 11200| D | |
|on | | | | | | | 2002| 2009|ck | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
- ------------------------------------------------------------------------------------------------------------------------------------
Explanation of Responses:
(01) 1-for-1
(02) The phantom stock units were accrued under the Church & Dwight Co., Inc. deferred compensation plan and are to be settle
d 100% in cash at the discretion of the reporting person.
**Intentional misstatements or omissions of facts constitute Federal /s/Attorney-in-Fact 01/10/2000
Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). ------------------------------------------ ----------
**Signature of Reporting Person Date
Note: File three copies of this form, one of which must be manually signed.
If space provided is insufficient, see Instruction 6 for procedure. SEC 1474 (7-96)
Potential persons who are to respond to the collection of information contained in this form are not
required to respond unless the form displays a currently valid OMD Number
Conish, Mark G. Church & Dwight Co., Inc. DEC-1999 PAGE: 2 OF 4
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
- ---------------- U.S. SECURITIES AND EXCHANGE COMMISSION ----------------------------
|F O R M 4| Washington, D.C. 20549 | OMB APPROVAL |
- ---------------- |--------------------------|
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP |OMB Number 3235-0287|
[ ] Check this box if |Expires: September 30,1998|
no longer Subject Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, |Estimated ave. burden |
to Section 16. Section 17(a) of the Public Utility Holding Company Act of 1935 or |hours per response.....0.5|
Section 30(f) of the Investment Company Act 1940 ----------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
|1.Name and Address of Reporting Person* |2.Issuer Name and Ticker or Trading Symbol |6.Relationship of Reporting Person to |
| | | Issuer (Check all Applicable) |
|Conish Mark G. |Church & Dwight Co., Inc. | |
| | of Reporting Person | Year |---(give title below) ---(Specify below)|
| | | Director 10% Owner |
|----------------------------------------|------------------------------------------------|--- --- |
| (Last) (First) (MI)|3.IRS or Soc. Sec. No. |4.Statement for Month/ | X Officer Other |
| | of Reporting Person | Year |---(give title below) ---(Specify below)|
| 469 North Harrison Street | (Voluntary) | | |
| | | December 1999 | |
| | | | Vice President Operations |
|----------------------------------------| |------------------------|----------------------------------------|
| (Street) | |5.If Amendment, Date of |7. Individual or Joint/Group Filing |
| | | Original (Month/Year) | (Check Applicable Line) |
| | | | |
|Princeton NJ 08540-5297| | | 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 |2.Transac- |3.Trans. |4.Security Acquired (A) or |5.Amount of |6. |7.Nature of Indirect|
| (Instr. 3) | tion Date | Code | Disposed of (D) | Securities |Own.| Beneficial |
| |(Mon/Day/Yr)|(Instr.8)| (Instr. 3, 4 & 5) | Beneficially |Form| Ownership |
| | |---------|-------------------------------| Owned at End of|(D) | (Instr. 4) |
| | | | | |(A) | | Month |or | |
| | |Code| V | Amount |(D) | Price | (Instr. 3 & 4) |(I) | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
|<S> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
|-------------------------------|------------|----|----|----------------|----|---------|-----------------|----|--------------------|
| | | | | | | | | | |
| | | | | | | | | | |
- ------------------------------------------------------------------------------------------------------------------------------------
Reminder: Report on a separate line for each class securities owned directly or indirectly. SEC 1474 (7-96)
*If the form is filed by more than one reporting person, see Instruction 4(b)(v).
PAGE: 3 OF 4
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
FORM 4 (continued) TABLE II - Derivative Securities Acquired, Disposed of, Beneficially Owned
(e.g., puts, calls, warrants, options, convertible security)
- ------------------------------------------------------------------------------------------------------------------------------------
|1.Title of|2.Conver-|3. |4.Tran- |5.Number of |6.Date |7.Title and Amount |8.Price of|9.Number |10. |11.Nature |
|Derivative|sion or |Trans| saction| Derivative |Exercisable| of Underlying |Derivative| of |Own.| of |
|Security |Exercise |Date | Code | Securities |and | Securities |Security |Derivative|Form|Indirect |
|(Instr. 3)|Price of |(Mon/|(Instr.8)| Acquired (A) or |Expiration | (Instr. 3 & 4) |(Instr. 5)|Securities|of |Beneficial|
| |Deriva- | Day/| | Disposed of (D) |Date | | |Benefi- |Deri|Ownership |
| |tive |Year)| | (Instr. 3, 4 & 5) |(Month/Day/| | |cially |Sec.|(Instr. 4)|
| |Security | | | | Year) | | |Owned at |Dir.| |
| | | | | |-----------|---------------------| |End of |(D) | |
| | | | | | | | |Amount or | |Month |or | |
| | | |---------|---------------------|Date |Exp. | Title |Number of | |(Instr. 4)|Ind.| |
| | | |Code| V | (A) | (D) |Exbl.|Date | |Shares | | |(I) | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
|<S> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |<C> |
|Phantom St| | | | | | | | |Common Sto| 734| | 734| D | |
|ock Units| | | | | | | | |ck | | | | | |
| | | | | | | | | | | | | | | |
| | (01)| | | | | | (02)| (02)| | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
|----------|---------|-----|----|----|----------|----------|-----|-----|----------|----------|----------|----------|----|----------|
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
- ------------------------------------------------------------------------------------------------------------------------------------
Explanation of Responses:
**Intentional misstatements or omissions of facts constitute Federal /s/Attorney-in-Fact 01/10/2000
Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). ------------------------------------------ ----------
**Signature of Reporting Person Date
Note: File three copies of this form, one of which must be manually signed.
If space provided is insufficient, see Instruction 6 for procedure. SEC 1474 (7-96)
Potential persons who are to respond to the collection of information contained in this form are not
required to respond unless the form displays a currently valid OMD Number
Conish, Mark G. Church & Dwight Co., Inc. DEC-1999 PAGE: 4 OF 4
</TABLE>
<PAGE>
