Ownership Submission
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 *
ASP FML Holdings, LLC
  2. Issuer Name and Ticker or Trading Symbol
FAIRMOUNT SANTROL HOLDINGS INC. [FMSA]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O AMERICAN SECURITIES LLC, 299 PARK AVENUE, 34TH FLOOR
3. Date of Earliest Transaction (Month/Day/Year)
12/07/2016
(Street)

NEW YORK, NY 10171
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 12/07/2016   S   23,000,000 D $ 8.5375 48,156,624 (1) (2) D (1) (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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ASP FML Holdings, LLC
C/O AMERICAN SECURITIES LLC
299 PARK AVENUE, 34TH FLOOR
NEW YORK, NY 10171
    X    
ASP FML Investco, LLC
C/O AMERICAN SECURITIES LLC
299 PARK AVENUE, 34TH FLOOR
NEW YORK, NY 10171
    X    
American Securities Partners V, L.P.
C/O AMERICAN SECURITIES LLC
299 PARK AVENUE, 34TH FLOOR
NEW YORK, NY 10171
    X    
American Securities Partners V(B), L.P.
C/O AMERICAN SECURITIES LLC
299 PARK AVE, 34TH FLOOR
NEW YORK, NY 10171
    X    
American Securities Partners V (C) L.P.
C/O AMERICAN SECURITIES LLC
299 PARK AVE, 34TH FLOOR
NEW YORK, NY 10171
    X    
ASP FML Co-Invest I, LLC
C/O AMERICAN SECURITIES LLC
299 PARK AVENUE, 34TH FLOOR
NEW YORK, NY 10171
    X    
American Securities Associates V, LLC
C/O AMERICAN SECURITIES LLC
THE CHRYSLER CENTER, 666 THIRD AVENUE
NEW YORK, NY 10017
    X    
ASP Manager Corp.
C/O AMERICAN SECURITIES LLC
299 PARK AVENUE, 34TH FLOOR
NEW YORK, NY 10171
    X    
AMERICAN SECURITIES LLC
299 PARK AVENUE
34TH FLOOR
NEW YORK, NY 10171
    X    

Signatures

 ASP FML Holdings LLC, INC. By: ASP Manager Corp., its manager By: /s/ Michael G. Fisch President   12/08/2016
**Signature of Reporting Person Date

 ASP FML Investco, LLC By: ASP Manager Corp., its manager By: /s/ Michael G. Fisch President   12/08/2016
**Signature of Reporting Person Date

 American Securities Partners V, L.P. By: American Securities Associates V, LLC, its general partner By: /s/ Michael G. Fisch Managing Member   12/08/2016
**Signature of Reporting Person Date

 American Securities Partners V(B), L.P. By: American Securities Associates V, LLC, its general partner By: /s/ Michael G. Fisch Managing Member   12/08/2016
**Signature of Reporting Person Date

 American Securities Partners V(C), L.P. By: American Securities Associates V, LLC, its general partner By: /s/ Michael G. Fisch Managing Member   12/08/2016
**Signature of Reporting Person Date

 ASP FML Co-Invest I, LLC By: ASP Manager Corp., its manager By: /s/ Michael G. Fisch President   12/08/2016
**Signature of Reporting Person Date

 American Securities Associates V, LLC By: /s/ Michael G. Fisch Managing Member   12/08/2016
**Signature of Reporting Person Date

 ASP Manager Corp., By: /s/ Michael G. Fisch President   12/08/2016
**Signature of Reporting Person Date

 American Securities LLC By: /s/ Michael G. Fisch President and Chief Executive Officer   12/08/2016
**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) The shares are directly owned by ASP FML Holdings, LLC ("ASPFMLHoldings") and may also be deemed to be indirectly beneficially owned by: (i) ASP FML Investco, LLC ("ASPFMLInvestco"), the owner of a majority of the membership interests in ASPFMLHoldings; (ii) American Securities Partners V, L.P., American Securities Partners V(B), L.P. and American Securities Partners V(C), L.P. (each, a "Sponsor") and ASP FML Co-Invest I, LLC ("ASPFMLCoinvest"), the owners of a majority of the membership interests in ASPFMLInvestco; and (iii) American Securities Associates V, LLC ("GP"), the general partner of each Sponsor. American Securities LLC ("ASLLC") provides investment advisory services to each Sponsor and to the GP. ASP Manager Corp., a wholly owned subsidiary of ASLLC, is the manager of ASPFML Holdings, ASPFMLInvestco and ASPFMLCoinvest.
(2) Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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