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 * Kleffel Juliette   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) _____ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) EVP of Subsidiary (Last) (First) (Middle) PO BOX 9012 3. Date of Earliest Transaction (Month/Day/Year) 04/01/2019 (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 04/02/2019   F   648 D $ 26.97 5,059 D (1)   Common Stock 04/01/2019   F   246 D $ 26.93 827 D (2)   Common Stock 04/01/2019   F   98 D $ 26.93 339 D (3)   Common Stock               9,163 D   Common Stock               635 D (4)

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)

$ 31.15

(6)

04/02/2028

Common Stock

12,635

12,635

D

Common Stock Right to Buy (5)

$ 28.69

(6)

04/03/2027

Common Stock

18,078

18,078

D

Common Stock Right to Buy (5)

$ 15.99

(7)

03/31/2024

Common Stock

5,253

5,253

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Kleffel Juliette PO BOX 9012 STUART, FL 34995				EVP of Subsidiary

Signatures

/s/ Dennis S. Hudson, III as Power of Attorney for Juliette Kleffel		04/03/2019
**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)	Represents shares of restricted stock units ("RSUs") granted on April 2, 2018. One-third of the shares vest on each of April 3, 2019, 2020 and 2021, provided the recipient remains in continuous service with the Company on each such vesting date.
(2)	Represents shares of restricted stock units ("RSUs") granted on April 3, 2017. One-third of the shares vest on each of April 3, 2018, 2019 and 2020, provided the recipient remains in continuous service with the Company on each such vesting date.
(3)	Represents an unvested time-based restricted stock award granted on 4/1/2017 under Seacoast's 2013 Long-Term Incentive Plan, which shall vest over 3 years in one-third increments each anniversary of the date of grant beginning on the first anniversary of the date of grant, subject to continued employment
(4)	Represents an unvested time-based restricted stock award granted on October 1, 2016, which shall vest over 3 years in one-third increments, beginning on October 1, 2017 and on each anniversary thereafter, subject to continued employment.
(5)	Granted pursuant to Seacoast Banking Corporation of Florida's 2013 Incentive Plan.
(6)	Vests over 3 years in one-third increments each anniversary of the date of grant beginning on the first anniversary of the date of grant (the date indicated), subject to continuous employment on each vesting date and the Company's banking subsidiary meets certain capital requirements.
(7)	Two tiered vesting. First, performance vesting must be met which requires that: 1) the market price of Seacoast common stock increase to 120% or more of the exercise price; and 2) Seacoast's Tier 1 Capital must be equal to or greater than the regulatory standard. Once performance criteria is met, option shall vest in equal installments at the end of each month over the next 48 months, provided that Optionee remains in Continuous Service on each applicable vesting date.

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