Annual Statement of Changes in Beneficial Ownership (5)

FORM 5

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
[ ] Form 3 Holdings Reported
[ ] Form 4 Transactions Reported

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Shaffer Charles M	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) SEACOAST BANKING CORPORATION OF FLORIDA, P. O. BOX 9012	3. Statement for Issuer's Fiscal Year Ended (MM/DD/YYYY) 12/31/2018
(Street) STUART, FL 34995 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form Filed by One Reporting Person ___ Form Filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock							14881	D
Common Stock							10875	D ⁽¹⁾
Common Stock							7220	D ⁽²⁾
Common Stock							2807	D ⁽³⁾
Common Stock							893.887	D ⁽⁴⁾

*Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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/YYYY)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of Derivative Securities Beneficially Owned at End of Issuer's Fiscal Year (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock Right to Buy ⁽⁵⁾	$31.15						⁽⁶⁾	4/2/2028	Common Stock	18952		18952	D
Common Stock Right to Buy ⁽⁵⁾	$23.91						⁽⁶⁾	4/3/2027	Common Stock	28544		28544	D
Common Stock Right to Buy ⁽⁵⁾	$14.82						⁽⁷⁾	2/28/2024	Common Stock	21255		21255	D
Common Stock Right to Buy ⁽⁵⁾	$12.63						⁽⁸⁾	1/29/2023	Common Stock	8100		8100	D
Common Stock Right to Buy ⁽⁵⁾	$10.54						4/29/2015 ⁽⁹⁾	4/29/2024	Common Stock	25000		25000	D
Common Stock Right to Buy ⁽⁵⁾	$11.00						6/28/2014 ⁽¹⁰⁾	6/28/2023	Common Stock	2400		2400	D

Explanation of Responses:
(1)	Represents shares of restricted stock units ("RSUs") granted on April 2, 2018. One-third of the shares vest on each of April 2, 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)	Held in Company's Employee Stock Purchase Plan as of Dec. 31, 2018
(4)	Share equivalents held in Company's Retirement Savings Plan as of December 31, 2018.
(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)	Originally has two tiered vesting. Performance criteria was met, and time-based vesting began on 12/1/2016. Option vests 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.
(8)	Performance vesting criteria has been met. Option vests in equal installments beginning on 7/1/2015 over the following 48 months, provided the Optionee remains in continuous service on each applicable vesting date.
(9)	Vests over 3 years in one-third increments on each anniversary of the date of grant beginning on the first anniversary of the date of grant (the date indicated), subject to continue employment.
(10)	Vests over 5 years at the rate of 20% on the first anniversary of the date of grant (the date indicated) and then at the rate of 20% on each of the following four anniversaries thereafter, subject to continued employment.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Shaffer Charles M SEACOAST BANKING CORPORATION OF FLORIDA P. O. BOX 9012 STUART, FL 34995				EVP of subsidiary

Signatures
/s/ Dennis S. Hudson, III as Power of Attorney for Charles M. Shaffer		2/14/2019
^** Signature of Reporting Person		Date

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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