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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
LUCIER GREGORY T
   2. Issuer Name and Ticker or Trading Symbol
NUVASIVE INC [NUVA] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
7475 LUSK BLVD		 3. Date of Earliest Transaction (Month/Day/Year)
02/06/2019
(Street)

SAN DIEGO, CA 92121		 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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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. SEC 1474 (9-02)

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
PRSUs (1) $ 0 02/06/2019   A   38,527     (2)   (2) Common Stock 38,527 $ 0 38,527 D  
PRSUs (1) $ 0 02/06/2019   A   19,804     (3)   (3) Common Stock 19,804 $ 0 19,804 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
LUCIER GREGORY T
7475 LUSK BLVD
SAN DIEGO, CA 92121		   X      

Signatures

 /s/ Nathaniel B. Sisitsky, Attorney-in-Fact for Gregory T. Lucier   02/07/2019
**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) Each Performance Restricted Stock Unit ("PRSU") represents the right to receive one share of the Issuer's common stock upon vesting.
(2) This PRSU award was granted to the Reporting Person on April 30, 2018. The award was granted with a performance condition based on the Issuer's earnings per share over the performance period ended December 31, 2018. On February 6, 2019, the Compensation Committee of the Issuer's Board of Directors certified the Issuer's performance for purposes of the award. Based on the Issuer's performance, the award will vest as to 38,527 shares on April 30, 2021, subject to and in accordance with the terms of the award. As the award did not constitute a derivative security, it was not required to be reported and was not reported on a Form 4 at the time of grant.
(3) This PRSU award was granted to the Reporting Person on March 1, 2016. The award was granted based on a target number of shares with a performance multiplier of 0-250% based on the Issuer's total stockholder return over the performance period ended December 31, 2018. On February 6, 2019, the Compensation Committee of the Issuer's Board of Directors certified the Issuer's performance for purposes of the award. Based on the Issuer's performance, the award will vest as to 19,804 shares on March 1, 2019, subject to and in accordance with the terms of the award. As the award did not constitute a derivative security, it was not required to be reported and was not reported on a Form 4 at the time of grant.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.