Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  SISITSKY NATHANIEL
 2. Date of Event Requiring Statement (Month/Day/Year)
06/29/2018		 3. Issuer Name and Ticker or Trading Symbol
NUVASIVE INC [NUVA]
(Last)
(First)
(Middle)
7475 LUSK BLVD.		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP & General Counsel
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN DIEGO, CA 92121		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 3,508 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
RSUs (2)   (3)   (3) Common Stock 3,420 $ 0 D  
RSUs (2)   (4)   (4) Common Stock 3,721 $ 0 D  
RSUs (2)   (5)   (5) Common Stock 1,586 $ 0 D  
RSUs (2)   (6)   (6) Common Stock 2,256 $ 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
SISITSKY NATHANIEL
7475 LUSK BLVD.
SAN DIEGO, CA 92121		       SVP & General Counsel  

Signatures

/s/ Nathaniel B. Sisitsky 07/03/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) Shares directly held by the Reporting Person. The Reporting Person also holds conditional rights to receive shares pursuant to Company equity awards as disclosed on this Form 3.
(2) Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's common stock upon vesting.
(3) This RSU award was granted to the Reporting Person on July 1, 2015. In accordance with the terms of the RSU award, the award vested as to 1,710 shares on each of July 1, 2016 and July 1, 2017 and will vest as to 1,710 shares on each of July 1, 2018 and July 1, 2019.
(4) This RSU award was granted to the Reporting Person on March 1, 2016. In accordance with the terms of the RSU award, the award will vest as to 3,721 shares on March 1, 2019.
(5) This RSU award was granted to the Reporting Person on March 1, 2017. In accordance with the terms of the RSU award, the award will vest as to 1,586 shares on March 1, 2020.
(6) This RSU award was granted to the Reporting Person on April 30, 2018. In accordance with the terms of the RSU award, the award will vest as to 2,256 shares on April 30, 2021.

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