Was David Sponsel’s Alphatec (ATEC) share sale made under a Rule 10b5-1 plan?

Yes. The Form 4 states the sales were executed under a Rule 10b5-1 plan. The plan was adopted by Sponsel to systematically sell shares in order to satisfy tax withholding obligations arising from the vesting of restricted stock units.

Alphatec (ATEC) EVP of Sales sells 163,452 shares in Rule 10b5-1 trade

Q: At what prices did David Sponsel sell Alphatec (ATEC) shares in this Form 4?

Sponsel’s sales averaged $12.52 per Alphatec share. The filing notes that the shares were sold in multiple trades at prices ranging from $12.13 to $12.92, and the reported figure is a weighted average of those transactions.

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Alphatec Holdings, Inc. executive David Sponsel, EVP of Sales, sold 163,452 shares of common stock in an open-market transaction. The sale occurred at a weighted average price of $12.52 per share, with individual trade prices ranging from $12.13 to $12.92. After the sale, he directly holds 504,932 shares. According to the disclosure, these sales were executed under a pre-arranged Rule 10b5-1 trading plan adopted to cover tax withholding obligations from the vesting of restricted stock units.

Insights

Pre-planned sale to cover RSU taxes; executive still holds a large stake.

EVP of Sales David Sponsel sold 163,452 Alphatec shares at a weighted average of $12.52, with trade prices between $12.13 and $12.92. The transaction is coded as an open-market sale and reduces his direct holdings to 504,932 shares.

The filing states the trades were made under a pre-established Rule 10b5-1 plan adopted to satisfy tax withholding from restricted stock unit vesting. Such plans automate sales and usually reflect compensation and tax management rather than discretionary market timing.

Because the sale is tied to equity compensation and a 10b5-1 plan, it generally carries weaker signaling value about Alphatec’s outlook than an unplanned sale. Future filings may show additional activity under the same plan as further RSUs vest or tax obligations arise.

Insider Trade Summary 10b5-1

Net Seller: 163,452 shares ($2,046,419)

Net Sell 1 txn

Insider Sponsel David

Role EVP, SALES

Sold 163,452 shs ($2.05M)

Type	Security	Shares	Price	Value
Sale	Common Stock	163,452	$12.52	$2.05M

Holdings After Transaction: Common Stock — 504,932 shares (Direct)

Footnotes (1)

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 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 $12.13 to $12.92, 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 →

03/13/2026 - 06:00 PM

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).

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^*

Sponsel David

(Last)

(First)

(Middle)

C/O ALPHATEC SPINE, INC.

1950 CAMINO VIDA ROBLE

(Street)

CARLSBAD

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)
	EVP, SALES

3. Date of Earliest Transaction (Month/Day/Year)
03/11/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	03/11/2026		S⁽¹⁾		163,452	D	$12.52⁽²⁾	504,932	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 June 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 $12.13 to $12.92, 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	03/12/2026
	** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Alphatec Holdings (ATEC) report for David Sponsel?

Alphatec reported that EVP of Sales David Sponsel sold 163,452 common shares. The shares were sold in an open-market transaction at a weighted average price of $12.52 per share, with individual trades between $12.13 and $12.92.

At what prices did David Sponsel sell Alphatec (ATEC) shares in this Form 4?

Sponsel’s sales averaged $12.52 per Alphatec share. The filing notes that the shares were sold in multiple trades at prices ranging from $12.13 to $12.92, and the reported figure is a weighted average of those transactions.

How many Alphatec (ATEC) shares does David Sponsel hold after this transaction?

After the reported sale, David Sponsel directly holds 504,932 Alphatec shares. This post-transaction holding is disclosed in the Form 4 and reflects his remaining ownership following the sale of 163,452 common shares.

Why did Alphatec executive David Sponsel sell shares according to the Form 4?

The sale was made to satisfy tax withholding obligations from RSU vesting. The filing explains that the Rule 10b5-1 trading plan was established so that shares could be sold automatically when restricted stock units vested and related tax liabilities arose.

What role does David Sponsel hold at Alphatec Holdings (ATEC)?

David Sponsel serves as Alphatec’s Executive Vice President of Sales. His position is disclosed in the Form 4, which reports his open-market sale of 163,452 common shares and his resulting direct ownership of 504,932 shares after the transaction.