Squadron Capital LLC - 15 Dec 2025 SCHEDULE 13D/A Report for Alphatec Holdings, Inc. Common Stock, par value $0.0001 per share (ATEC)

Filing Manager
Squadron Capital LLC
Reporting Manager
Jennifer N. Pritzker
Security
Alphatec Holdings, Inc. Common Stock, par value $0.0001 per share
Symbol
ATEC
Shares outstanding
148M shares
Disclosed Ownership
13.2M shares
Ownership
8.9%
Form type
SCHEDULE 13D/A
Filing time
17 Dec 2025, 18:25:28 UTC
Date of event
15 Dec 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Squadron Capital LLC 7% 10.4M 0 10.4M /s/ David R. Pelizzon David R. Pelizzon, President 0001719228
Squadron Capital Holdings LLC 7% 10.4M 0 10.4M /s/ Mary Falcon Mary Falcon, Manager 0001731171
Jennifer N. Pritzker 8.9% 13.2M 58K 13.2M /s/ Jennifer N. Pritzker Jennifer N. Pritzker 0001850165
David R. Pelizzon 7.2% 10.7M 347K 10.4M /s/ David R. Pelizzon David R. Pelizzon 0001719217