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 *

HUDSON DENNIS S III 		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
__ X __ Officer (give title below)      _____ Other (specify below)
Chairman & CEO
(Last)          (First)          (Middle)

SEACOAST BANKING CORP. OF FLORIDA, P.O. BOX 9012 		3. Date of Earliest Transaction (MM/DD/YYYY)

11/7/2017
(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   11/9/2017     S    2300   D $24.22   19247   D    
Common Stock   11/8/2017     S    1700   D $24.27   21547   D    
Common Stock   11/7/2017     S    4000   D $24.54   23247   D    
Common Stock                  42787   D   (1)  
Common Stock                  21915   D   (2)  
Common Stock                  30497.905   D   (3)  
Common Stock                  49386   D   (4)  
Common Stock                  224356   I   Held by Sherwood Partners, Ltd, family partnership  
Common Stock                  280   I   Held by Spouse as Custodian for son  
Common Stock                  20   I   Held by son  

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   (5) $23.91                      (6) 4/3/2027   Common Stock   78021     78021   D    
Common Stock Right to Buy   (5) $14.82                      (7) 2/28/2024   Common Stock   51956     51956   D    
Common Stock Right to Buy   (5) $12.63                      (8) 1/28/2023   Common Stock   17975     17975   D    
Common Stock Right to Buy   (5) $10.54                    4/29/2015   (9) 4/29/2024   Common Stock   50000     50000   D    
Common Stock Right to Buy   (5) $11.00                    6/28/2014   (10) 6/27/2023   Common Stock   19400     19400   D    

Explanation of Responses:
(1)  Represents shares subject to performance-based restricted stock units ("PSUs") granted on June 28, 2013, that were subject to performance requirements which were attained over a period ending December 31, 2015. One third of the earned shares vested on Dec. 31, 2016. Of the remaining shares, half vest on each of Dec. 31, 2017 and Dec. 31, 2018, provided the recipient remains in continuous service with the Company on each such vesting date.
(2)  Shares held in Trust
(3)  Represent shares held in the Company's Retirement Savings Plan as of September 30, 2017
(4)  Shares held jointly with spouse
(5)  Granted pursuant to the Company's Amended and Restated 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 had two tiered vesting. The performance criteria was met and the 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)  Originally had two tiered vesting. Performance criteria was met and time-based vesting began on 7/1/15. 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)  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 continued 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 continue employment.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
HUDSON DENNIS S III
SEACOAST BANKING CORP. OF FLORIDA
P.O. BOX 9012
STUART, FL 34995 		X
Chairman & CEO

Signatures
/s/Dennis S. Hudson, III 11/9/2017
** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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