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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1. Name and Address of Reporting Person * ARCZYNSKI DENNIS J   2. Issuer Name and Ticker or Trading Symbol SEACOAST BANKING CORP OF FLORIDA [SBCF] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) SEACOAST BANKING CORPORATION OF FLORIDA, P. O. BOX 9012 3. Date of Earliest Transaction (Month/Day/Year) 02/15/2017 (Street) STUART, FL 34995 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 02/15/2017 02/17/2017 P(1)   1,000 A $ 22.25 1,000 D   Common Stock               24,475.5 D (2)   Common Stock               1,672 D (3)   Common Stock               9,110 D (4)   Common Stock               3,000 D

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

Common Stock Right to Buy (5)

$ 22.65

02/06/2017

02/05/2027

Common Stock

2,142

22.65

D

Common Stock Right to Buy (5)

$ 14.39

02/03/2016

02/02/2026

Common Stock

3,419

3,419

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ARCZYNSKI DENNIS J SEACOAST BANKING CORPORATION OF FLORIDA P. O. BOX 9012 STUART, FL 34995	X

Signatures

/s/ Sharon Mehl as Power of Attorney for Dennis J. Arczynski		02/17/2017
**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)	Shares purchased in a common stock offering, a prospectus supplement on which was filed with the SEC on February 16, 2017 pursuant to the Securities Act of 1933 Rule 424(b)(5).
(2)	Held in Seacoast's Non-employee Directors Deferred Compensation Plan for which receipt of such shares has been deferred, and as to which shares Mr. Arczynski has no voting or dispositive power
(3)	Held by LLP in which Mr. Arczynski is principal, as to which shares Mr. Arczynski has sole voting and dispositive power.
(4)	Held jointly with spouse
(5)	Granted pursuant to Seacoast Banking Corporation of Florida's 2013 Incentive Plan

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