Alphatec General Counsel sells 88,835 shares

Alphatec Holdings, Inc. reported that its General Counsel and Corporate Secretary, Marshall Tyson Eliot, sold 88,835 shares of common stock in an open-market transaction at a weighted average price of $12.49 per share on March 5, 2026.

Rhea-AI Filing Summary

Alphatec Holdings, Inc. reported that its General Counsel and Corporate Secretary, Marshall Tyson Eliot, sold 88,835 shares of common stock in an open-market transaction at a weighted average price of $12.49 per share on March 5, 2026.

These sales were effected under a pre-arranged Rule 10b5-1 trading plan adopted on March 14, 2025 to cover tax withholding obligations arising from the vesting of restricted stock units. Following this sale, Eliot directly holds 559,459 shares of Alphatec common stock.

Insider Trade Summary

Net Seller: 88,835 shares

Net Sell 1 txn

Insider Marshall Tyson Eliot

Role GENERAL COUNSEL & CORP. SEC.

Sold 88,835 shs ($1.11M)

Type	Security	Shares	Price	Value
Sale	Common Stock	88,835	$12.49	$1.11M

Holdings After Transaction: Common Stock — 559,459 shares (Direct)

Footnotes (2)

1. F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 14, 2025 to satisfy certain tax withholding obligations of the reporting person resulting from the vesting of restricted stock units.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.25 to $12.86, 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Alphatec Holdings (ATEC) disclose in this Form 4 filing?

Alphatec Holdings disclosed that General Counsel Marshall Tyson Eliot sold 88,835 common shares at a weighted average price of $12.49. The sale was executed under a Rule 10b5-1 trading plan to satisfy tax withholding obligations from vesting restricted stock units.

How many Alphatec (ATEC) shares did the General Counsel sell and at what prices?

Marshall Tyson Eliot sold 88,835 Alphatec common shares at a weighted average price of $12.49. Footnotes state the shares were sold in multiple trades at prices ranging from $12.25 to $12.86 per share, inclusive, in open-market transactions.

Does Marshall Tyson Eliot still hold Alphatec (ATEC) shares after this transaction?

Yes. After selling 88,835 shares, Marshall Tyson Eliot directly holds 559,459 shares of Alphatec common stock. This remaining stake is reported in the Form 4 as the total number of shares owned following the reported open-market sale transaction.

Was the Alphatec (ATEC) insider sale part of a Rule 10b5-1 trading plan?

Yes. The Form 4 states the sales were effected under a Rule 10b5-1 trading plan adopted on March 14, 2025. The plan was established to cover tax withholding obligations arising from the vesting of restricted stock units held by the reporting person.

What is the reason given for the Alphatec (ATEC) insider share sale?

The filing explains that the sales were made to satisfy tax withholding obligations from the vesting of restricted stock units. These transactions were executed automatically under a pre-established Rule 10b5-1 trading plan adopted by the reporting person in March 2025.

How is the Alphatec (ATEC) sale price described in the Form 4 footnotes?

The reported $12.49 per share is a weighted average sale price. Footnotes clarify the shares were sold in multiple transactions at prices between $12.25 and $12.86, and detailed trade-by-trade pricing is available upon request from the reporting person.

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Accepted by SEC EDGAR 03/09/2026 - 03:00 PM Learn about SEC filing dates

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^*

Marshall Tyson Eliot

(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)
	GENERAL COUNSEL & CORP. SEC.

3. Date of Earliest Transaction (Month/Day/Year)
03/05/2026

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	03/05/2026		S(1)		88,835	D	$12.49(2)	559,459	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 March 14, 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 $12.25 to $12.86, 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	03/08/2026
	** 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.