Sec Form 4 Filing - Hunsaker Craig E @ Alphatec Holdings, Inc. - 2017-06-15

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 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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1. Name and Address of Reporting Person Hunsaker Craig E 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) EVP, People & Culture and GC (Last) (First) (Middle) C/O ALPHATEC SPINE, INC., 5818 EL CAMINO REAL 3. Date of Earliest Transaction (MM/DD/YY) 06/15/2017 (Street) CARLSBAD, CA92008 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 06/21/2017 M 250,000 A $ 0 427,388 ( 1 ) 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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Employee Stock Option (right to buy) $ 1.93 06/15/2017 A 33,576 06/15/2017( 2 ) 06/15/2027( 2 ) Common Stock 33,576 $ 0 33,576 D Series A Convertible Preferred Stock $ 0 06/21/2017 M 500 ( 3 ) ( 3 ) Common Stock 250,000 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Hunsaker Craig E C/O ALPHATEC SPINE, INC. 5818 EL CAMINO REAL CARLSBAD, CA92008 EVP, People & Culture and GC Signatures /s/ Craig E. Hunsaker 06/23/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes 4,166 shares acquired on May 15, 2017, under the Issuer's 2007 Employee Stock Purchase Plan. ( 2 )The option grant was approved by a committee of the Issuer's Board of Directors on February 21, 2017, subject to shareholder approval of an amendment to the Issuer's 2016 Equity Incentive Plan to increase the maximum number of shares that may be granted to any one participant during a one-year period to 500,000. The Issuer's shareholders approved the amendment on June 15, 2017. The option vests in 36 monthly installments beginning March 21, 2017, except that all vesting attributable to periods prior to June 15, 2017 is deemed to have occurred on June 15, 2017. ( 3 )Each share of Series A Convertible Preferred Stock has no expiration date and is convertible into 500 shares of the Issuer's common stock following the date that shareholders approve such conversion, which approval was obtained on June 15, 2017.

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).

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