Squadron Capital LLC - 08 Dec 2025 Form 4 Insider Report for Alphatec Holdings, Inc. (ATEC)

Role: 10%+ Owner
Signature: David R. Pelizzon, President
Issuer symbol: ATEC
Transactions as of: 08 Dec 2025
Net transactions value: -$5,295,098
Form type: 4
Filing time: 10 Dec 2025, 19:00:11 UTC
Previous filing: 25 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Squadron Capital LLC	10%+ Owner	18 HARFORD AVENUE, P.O. BOX 233, GRANBY	David R. Pelizzon, President	09 Dec 2025	0001719228

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATEC	Common Stock	Sale	$4,688,719	-221,166	-2%	$21.20	10,673,879	08 Dec 2025	Direct	F1
transaction	ATEC	Common Stock	Sale	$606,379	-28,834	-0.27%	$21.03	10,645,045	09 Dec 2025	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.00 to $21.42, 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.
F2	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.91 to $21.11, 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.

Content

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.00 to $21.42, 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.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.91 to $21.11, 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.