Form 144: ATEC discloses RSUs and PSUs (112,894; 50,558)

Issuer submitted a Form 144 disclosing proposed or planned sales of Common stock and recent 10b5-1 activity by an affiliate.

Rhea-AI Filing Summary

Issuer submitted a Form 144 disclosing proposed or planned sales of Common stock and recent 10b5-1 activity by an affiliate. The filing lists 112,894 Performance Stock Units and 50,558 Restricted Stock Units, each dated 03/05/2026.

The filing also records 10b5-1 sales by David Sponsel of 60,425 Common shares on 02/05/2026 for $833,162.03.

Insights

Corporate Governance Analyst

Form 144 shows planned/reserved equity dispositions and a recent 10b5-1 sale.

The excerpt lists 112,894 Performance Stock Units and 50,558 Restricted Stock Units dated 03/05/2026; these are identified under "Securities To Be Sold" with the issuer named as the source. This describes the classes and counts of equity the filer referenced.

Separately, the filing documents a 10b5-1 sale by David Sponsel of 60,425 Common shares on 02/05/2026 for $833,162.03. Additional filings would be needed to show whether further sales occur or the timing of any distributions.

FAQ

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

What does the Form 144 for ATEC disclose about securities to be sold?

The filing lists 112,894 Performance Stock Units and 50,558 Restricted Stock Units dated 03/05/2026. These items are presented as the securities the filer intends to sell or distribute.

Did the Form 144 record any recent insider sales for ATEC?

Yes. It records 10b5-1 sales by David Sponsel of 60,425 Common shares on 02/05/2026 for $833,162.03 as shown in the excerpt.

Who is listed as the source or broker for the transactions in the filing?

The excerpt identifies Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza as the securities intermediary associated with the filing details.

Are the Performance Stock Units and RSUs described as already delivered or still to be sold?

The filing lists the 112,894 Performance Stock Units and 50,558 Restricted Stock Units under "Securities To Be Sold" with the issuer named; the excerpt does not state an executed sale for those units.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/11/2026 - 04:42 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001772837
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ALPHATEC HOLDINGS, INC.
SEC File Number	000-52024
Address of Issuer	1950 Camino Vida Roble Carlsbad CALIFORNIA 92008
Phone	7604319286
Name of Person for Whose Account the Securities are To Be Sold	DAVID SPONSEL
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	163452	2044784.52	151356620	03/11/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/05/2026	Performance Stock Units	Issuer			112894	03/05/2026	N/A
Common	03/05/2026	Restricted Stock Units	Issuer			50558	03/05/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for DAVID SPONSEL 1950 Camino Vida Roble Carlsbad CA 92008	Common	02/05/2026	60425	833162.03

144: Remarks and Signature

Remarks
Date of Notice	03/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/12/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ David Sponsel
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)