Alphatec (NASDAQ: ATEC) CFO sells 79,789 shares in 10b5-1 plan

Rhea-AI Filing Summary

Alphatec Holdings, Inc. Chief Financial Officer John Todd Koning reported an open-market sale of 79,789 shares of common stock on March 13, 2026 at a weighted average price of $12.36 per share, in transactions priced between $12.21 and $12.64.

After the sale, he directly holds 600,721 shares of Alphatec common stock. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 12, 2025 to cover tax withholding obligations arising from the vesting of restricted stock units.

Insider Trade Summary 10b5-1

Net Seller: 79,789 shares ($986,192)

Net Sell 1 txn

Insider Koning John Todd

Role CHIEF FINANCIAL OFFICER

Sold 79,789 shs ($986K)

Type	Security	Shares	Price	Value
Sale	Common Stock	79,789	$12.36	$986K

Holdings After Transaction: Common Stock — 600,721 shares (Direct)

Footnotes (1)

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025 to satisfy certain tax withholding obligations of the reporting person resulting from the vesting of restricted stock units. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.21 to $12.64, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Koning John Todd

(Last) (First) (Middle)

C/O ALPHATEC SPINE, INC.

1950 CAMINO VIDA ROBLE

(Street)

CARLSBAD CA 92008

(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)
	CHIEF FINANCIAL OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

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	03/13/2026		S(1)		79,789	D	$12.36(2)	600,721	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

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025 to satisfy certain tax withholding obligations of the reporting person resulting from the vesting of restricted stock units.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.21 to $12.64, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

	/s/ Tyson E. Marshall, Attorney-in-Fact	03/17/2026
	** 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.

FAQ

What insider transaction did Alphatec (ATEC) report for its CFO?

Alphatec reported that CFO John Todd Koning sold 79,789 common shares. The open-market sale occurred on March 13, 2026, under a Rule 10b5-1 trading plan, and relates to covering tax obligations from the vesting of restricted stock units.

At what price did the Alphatec (ATEC) CFO sell his shares?

The Alphatec CFO sold shares at a weighted average price of $12.36. According to the filing, the transactions occurred in multiple trades with prices ranging from $12.21 to $12.64 per share, reflecting typical execution across an intraday trading range.

How many Alphatec (ATEC) shares does the CFO own after this sale?

After the reported sale, the CFO directly holds 600,721 Alphatec shares. This remaining position, disclosed in the Form 4, shows that despite the 79,789-share disposition, he continues to retain a substantial equity stake in the company.

Was the Alphatec (ATEC) CFO’s share sale pre-planned under Rule 10b5-1?

Yes. The sale was executed under a Rule 10b5-1 trading plan. The filing states the plan was adopted on December 12, 2025, and that the transactions were designed to satisfy tax withholding obligations stemming from restricted stock unit vesting.

Why did the Alphatec (ATEC) CFO sell 79,789 shares according to the filing?

The filing states the shares were sold to satisfy tax withholding obligations. These obligations arose from the vesting of restricted stock units, and the sales were carried out under a pre-arranged Rule 10b5-1 trading plan rather than as discretionary market timing.

What trading range applied to the Alphatec (ATEC) CFO’s share sale?

The reported weighted average price was $12.36, within a $12.21–$12.64 range. The Form 4 notes the shares were sold in multiple transactions across that price band and offers to provide detailed breakdowns upon request.