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 *

Berkowitz Mortimer III 		2. Issuer Name and Ticker or Trading Symbol

Alphatec Holdings, Inc. [ ATEC ] 		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)

C/O ALPHATEC SPINE, INC., 5818 EL CAMINO REAL 		3. Date of Earliest Transaction (MM/DD/YYYY)

5/17/2018
(Street)

CARLSBAD, CA 92008
(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   5/17/2018     M    126985   A   (1) 327918   (2) D    
Common Stock   5/17/2018     M    126985   A   (1) 326985   I   By Porcupine Investment Partners, LLC  
Common Stock                  898098   I   By HealthpointCapital Partners, L.P.   (3)
Common Stock                  1750880   I   By HealthpointCapital Partners II, L.P.   (3)

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
Series B Convertible Preferred Stock     (1) 5/17/2018     M         400      (1)   (1) Common Stock   126985   $0   0   D    
Series B Convertible Preferred Stock     (1) 5/17/2018     M         400      (1)   (1) Common Stock   126985   $0   0   I   By Porcupine Investment Partners, LLC  

Explanation of Responses:
(1)  Each share of Series B Convertible Preferred Stock had no expiration date and converted into 317.4603 shares of the issuer's common stock on May 17, 2018, the date that issuer's stockholders approved such conversion.
(2)  Includes shares owned by Reporting Person and shares owned by Reporting Person's spouse.
(3)  Reporting Person is a managing member of HGP, LLC, which is the general partner of HealthpointCapital Partners, L.P. In addition, Reporting Person is a managing member of HGP II, LLC, which is the general partner of HealthpointCapital Partners II, L.P. As such, Reporting Person may be deemed to beneficially own the securities held by HealthpointCapital Partners, L.P. and HealthpointCapital Partners II, L.P. Reporting Person, however, disclaims beneficial ownership of such shares, except to the extent of his indirect pecuniary interest therein.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Berkowitz Mortimer III
C/O ALPHATEC SPINE, INC.
5818 EL CAMINO REAL
CARLSBAD, CA 92008 		X



Signatures
/s/ Tyson E. Marshall by power of attorney 5/21/2018
** 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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