Washington, D.C. 20549


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Black Jeffrey G.

(Last) (First) (Middle)


(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Alphatec Holdings, Inc. [ ATEC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
4. If Amendment, Date of 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
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 05/17/2018 M 15,874(2) A $0(1) 49,874 I By IRA
Common Stock 75,000 D
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 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: 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) 05/17/2018 M 50 (1) (1) Common Stock 15,874(2) $0 0 I By IRA
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. Due to a rounding error, Reporting Person's Form 4 filing dated March 12, 2018 incorrectly stated that the number of shares of common stock underlying the Series B Convertible Preferred Stock purchased by Reporting Person on March 8, 2018 was 15,873. The actual number of underlying shares was 15,874, which is reflected in this Form 4.
/s/ Tyson E. Marshall by power of attorney 05/21/2018
** 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 Number.
            Know all by these present, that the undersigned 
hereby constitutes and appoints Craig E. Hunsaker and Tyson E. 
Marshall of Alphatec Holdings, Inc., and Rick L. Guerisoli of 
Durham Jones & Pinegar, signing singly, the undersigned's true 
and lawful attorney-in-fact, with full power and authority as 
hereinafter described on behalf of and in the name, place and 
stead of the undersigned, to:
(1)     prepare, execute, acknowledge, deliver, submit, and file 
for and on behalf of the undersigned, in the undersigned's 
capacity as an officer and/or director and/or other insider of 
Alphatec Holdings, Inc. or any successor entity (the "Company"), 
an application for Form ID (or equivalent form) required to 
generate the necessary access codes and passphrases (whether new 
or replacement) to file on U.S. Securities & Commission's 
Electronic Data Gathering, Analysis and Retrieval System 
(2)     prepare, execute, acknowledge, deliver, submit, and file 
for and on behalf of the undersigned, in the undersigned's 
capacity as an officer and/or director and/or other insider of 
the Company, Forms 3, 4, and 5 or any other forms or reports to 
be filed in accordance with Section 16(a) of the Securities 
Exchange Act of 1934 and the rules promulgated thereunder
"Exchange Act"), and any amendments thereto; 
(3)     seek or obtain, as the undersigned's representative and 
on the undersigned's behalf, information on transactions in the 
Company's securities from any third party, including brokers, 
employee benefit plan administrators and trustees, and the 
undersigned hereby authorizes any such person to release any such 
information to the undersigned and approves and ratifies any such 
release of information; 
(4)     take any other action of any type whatsoever in 
connection with the foregoing which, in the opinion of such 
attorney-in-fact, may be of benefit to, in the best interest of, 
or legally required by, the undersigned, it being understood that 
the documents executed by such attorney-in-fact on behalf of the 
undersigned pursuant to this Power of Attorney shall be in such 
form and shall contain such terms and conditions as such 
attorney-in-fact may approve in such attorney-in-fact's 
The undersigned hereby grants to such attorney-in-fact full power 
and authority to do and perform any and every act and thing 
whatsoever requisite, necessary, or proper to be done in the 
exercise of any of the rights and powers herein granted, as fully 
to all intents and purposes as the undersigned might or could do 
if personally present, with full power of substitution or 
revocation, hereby ratifying and confirming all that such 
attorney-in-fact, or such attorney-in-fact's substitute or 
substitutes, shall lawfully do or cause to be done by virtue of 
this Power of Attorney and the rights and powers herein granted.  
The undersigned acknowledges that: (i) this Power of Attorney 
authorizes the attorney-in-fact to act in his discretion in 
submitting information on transactions and holdings on 
information provided to the attorney-in-fact without independent 
verification of such information; (ii) the attorney-in-fact, in 
serving in such capacity at the request of the undersigned, is 
not assuming nor relieving, nor is the Company assuming nor 
relieving, any of the undersigned's responsibilities to comply 
with Section 16 or any other provision of the Exchange Act; (iii) 
neither the Company nor the foregoing attorney-in-fact assume any 
liability for the undersigned's responsibility to comply with the 
requirement of the Exchange Act or any obligation or liability of 
the undersigned for profit disgorgement under Section 16(b) of 
the Exchange Act.
This Power of Attorney shall remain in full force and effect 
until the undersigned is no longer required to file Forms 3, 4 
and 5 with respect to the undersigned's holdings of and 
transactions in securities issued by the Company, unless earlier 
revoked by the undersigned in a signed writing delivered to the 
foregoing attorneys-in-fact. The undersigned hereby revokes any 
and all powers of attorney previously executed with respect to 
the matters covered herein.
IN WITNESS WHEREOF, the undersigned has caused this Power of 
Attorney to be executed as of this 27th day of April, 2018. 
/s/ Jeffrey G. Black