Sec Form 4 Filing - DUESER F SCOTT @ FIRST FINANCIAL BANKSHARES INC - 2017-12-14

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 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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1. Name and Address of Reporting Person DUESER F SCOTT 2. Issuer Name and Ticker or Trading Symbol FIRST FINANCIAL BANKSHARES INC [ FFIN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chairman, President and CEO (Last) (First) (Middle) P. O. BOX 701 3. Date of Earliest Transaction (MM/DD/YY) 12/14/2017 (Street) ABILENE, TX79604-0701 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 278,002 I By Partnership ( 1 ) Common Stock 389,143 I By Trust ( 2 ) Common Stock 12/14/2017 J 0 ( 3 ) D $ 0 ( 3 ) 224,155 I By LLC ( 4 )

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 DUESER F SCOTT P. O. BOX 701 ABILENE, TX79604-0701 X Chairman, President and CEO Signatures By: J. Bruce Hildebrand Attorney in fact for F. Scott Dueser 12/14/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares owned by a family limited partnership of which Mr. Dueser is the manager of the limited liability company, which serves as general partner. Mr. Dueser disclaims beneficial ownership with respect to 208,502 shares because he does not have a pecuniary interest in such shares. This report should not be deemed an admission that Mr. Dueser is the beneficial ownership of these shares for purposes of Section 16 or any other purpose. ( 2 )The total shares represented are held in various trusts of which Mr. Dueser is the trustee, settlor and beneficiary. ( 3 )On December 15, 2017, Mr. Dueser gifted partnership interests (in the form of units) to three trusts: Trust I, Trust II and Trust III (together, the "Trusts") of which he is not the beneficiary. Although Mr. Dueser gifted partnership interests to the Trusts, the number of shares beneficially owned by the partnership remains unchanged. The gifting of the partnership interests, however, decreased Mr. Dueser's pecuniary interests in the shares held by the partnership due to the decrease in his overall interests in the partnership. Accordingly, while the gifting of the partnership interests to the Trusts constitutes a disposition by Mr. Dueser, the amount and price of the shares involved in the disposition are not applicable. ( 4 )Represents shares owned by a limited liability company ("LLC") of which Mr. Dueser is the manager and sole member, which serves as the general partner of a limited partnership referred to in footnote 3 above.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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