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
                                                                                  
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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. Date of Earliest Transaction (MM/DD/YYYY)
12/30/2019
(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)
Code V Amount (A) or (D) Price
Common Stock  12/30/2019    A    3271  A $30.57  3271  D (1)  
Common Stock                 7226  D (2)  
Common Stock                 3610  D (3)  
Common Stock                 31650  D   
Common Stock                 3472  D (4)  
Common Stock                 949.844  D (5)  

Table II - Derivative Securities 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 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 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 (6) $31.15                   (7) 4/2/2028  Common Stock  18952    18952  D   
Common Stock Right to Buy (6) $28.69                   (7) 4/3/2027  Common Stock  28544    28544  D   
Common Stock Right to Buy (6) $14.82                   (8) 2/28/2024  Common Stock  21255    21255  D   
Common Stock Right to Buy (6) $12.63                   (9) 1/28/2023  Common Stock  8100    8100  D   
Common Stock Right to Buy (6) $10.54                  4/29/2015 (10) 4/29/2024  Common Stock  25000    25000  D   
Common Stock Right to Buy (6) $11.00                  6/28/2014 (11) 6/28/2023  Common Stock  2400    2400  D   

Explanation of Responses:
(1)  Represents unvested time-based restricted stock award granted on December 30, 2019, which shall vest over 3 years in one-third increments, beginning December 30, 2020, and on each anniversary thereafter, subject to continued employment.
(2)  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.
(3)  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.
(4)  Shares in the Company's Employee Stock Purchase Plan.
(5)  Share equivalents held in Company's Retirement Savings Plan as of September 30, 2019
(6)  Granted pursuant to the Company's Amended and Restated 2013 Incentive Plan.
(7)  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.
(8)  Originally had 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.
(9)  Originally had two tiered vesting. Performance vesting criteria has been met and time-based vesting began on 7/1/2015. Option vests in equal installments over the next 48 months, provided the Optionee remains in continuous service on each applicable vesting date.
(10)  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), and then at the rate of 20% on each of the following two anniversaries thereafter 20%, subject to continued employment.
(11)  Vests over 5 years at the rate of 20% on the first anniversary of the date of grant 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
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 12/31/2019
**Signature of Reporting Person Date
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