Ownership Submission
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 *
Winge John J.
   2. Issuer Name and Ticker or Trading Symbol
SeaSpine Holdings Corp [SPNE] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President, Sales
(Last)
(First)
(Middle)
C/O SEASPINE HOLDINGS CORPORATION, 5770 ARMADA DR		 3. Date of Earliest Transaction (Month/Day/Year)
12/31/2018
(Street)

CARLSBAD, CA 92008		 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 12/31/2018   J(1) V 1,544 A $ 6.426 (2) 32,646 D  
Common Stock 01/01/2019   M   14,359 A (3) 47,005 D  
Common Stock 01/01/2019   M   10,958 A (3) 57,963 D  
Common Stock 01/01/2019   F   8,038 (4) D $ 18.24 49,925 D  

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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
Restricted Stock Units (3) 01/01/2019   M     14,359   (5)   (5) Common Stock 14,359 $ 0 14,359 D  
Restricted Stock Units (3) 01/01/2019   M     10,958   (6)   (6) Common Stock 10,958 $ 0 21,918 D  
Restricted Stock Units (3) 01/01/2019   A   9,336     (7)   (7) Common Stock 9,336 $ 0 9,336 D  
Employee Stock Option (Right to Buy) $ 18.24 01/01/2019   A   31,118     (8) 01/01/2027 Common Stock 31,118 $ 0 31,118 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Winge John J.
C/O SEASPINE HOLDINGS CORPORATION
5770 ARMADA DR
CARLSBAD, CA 92008		       Vice President, Sales  

Signatures

 /s/Paul Benny, Attorney-in-Fact for John J. Winge   01/03/2019
**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) These shares were acquired under the issuer's 2015 Employee Stock Purchase Plan (ESPP) in transactions that were exempt under Rule 16b-3(c).
(2) In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on January 3, 2017, which was the first trading day of the applicable offering period.
(3) Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.
(4) These shares were withheld by the issuer to satisfy statutory tax withholding requirements on vesting of restricted stock units that occurred on January 1, 2019. No shares were sold in connection with this transaction.
(5) The reporting person was granted 43,077 restricted stock units on February 2, 2017, which vest in three equal installments on each of January 1, 2018, 2019 and 2020.
(6) The reporting person was granted 32,876 restricted stock units on March 5, 2018, which vest in three equal installments on each of January 1, 2019, 2020 and 2021.
(7) The restricted stock units vest in three equal installments on each of January 1, 2020, 2021 and 2022.
(8) The option vests as to 25% of the underlying shares on January 1, 2020 and the remaining 75% in twelve substantially equal quarterly installments thereafter.

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