SEC Form 4 · Updated Daily

ATEC

ALPHATEC HOLDINGS, INC. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

FinancialsOwnership

Current Reporting Owners

OwnerRoleShares OwnedAs OfLast Activity
Squadron Capital LLC10%+ Owner10,645,0452025-12-09S
Squadron Capital Holdings LLC10%+ Owner10,645,0452025-12-09S
Pritzker Jennifer N.10%+ Owner10,645,0452025-12-09S
Miles PatrickDirector · Officer5,893,5512026-09-10P
Hunsaker Craig EOfficer1,725,6092026-03-09G
Lish ScottOfficer815,7042026-03-13S
Berkowitz Mortimer IIIDirector650,0622026-06-10A
Marshall Tyson EliotOfficer630,3982026-08-05S
Koning John ToddOfficer600,7212026-03-13S
Blackford Quentin S.Director600,3812026-06-10A
Sponsel DavidOfficer504,9322026-03-11S
Demski David MDirector431,6352026-06-10A
Pelizzon David R10%+ Owner · Director378,8392026-06-10A
Valentine KeithDirector264,2832026-06-10A
MCGINNIS KAREN KDirector94,6712026-06-11S

Recent Filings

DateOwnerActivitySharesPriceOwned After
2026-09-10Miles PatrickOpen-market buy115,000$8.815,893,551
2026-08-05Marshall Tyson EliotOpen-market sale8,168$9.65630,398
2026-06-11MCGINNIS KAREN KOpen-market sale6,050$8.0194,671
2026-06-10Berkowitz Mortimer IIIGrant / award32,012$0.00650,062
2026-06-10Demski David MGrant / award32,012$0.00431,635
2026-06-10Pelizzon David RGrant / award32,012$0.00378,839
2026-06-10Valentine KeithGrant / award32,012$0.00264,283
2026-06-10Blackford Quentin S.Grant / award32,012$0.00600,381
2026-06-10MCGINNIS KAREN KGrant / award32,012$0.00100,721
2026-05-11Valentine KeithOpen-market buy35,000$7.00232,271
2026-05-08Valentine KeithOpen-market buy43,847$7.54197,271
2026-05-07Valentine KeithOpen-market buy56,153$7.49153,424
2026-04-07Marshall Tyson EliotOption exercise (derivative)15,000$0.000
2026-04-07Marshall Tyson EliotTax withholding23,393$11.03638,566
2026-04-07Marshall Tyson EliotOption exercise60,000$2.69661,959
2026-04-07Marshall Tyson EliotOption exercise12,500$3.34601,959
2026-04-07Marshall Tyson EliotOption exercise15,000$1.68589,459
2026-04-07Marshall Tyson EliotOption exercise15,000$1.98574,459
2026-03-13Lish ScottOpen-market sale260,535$12.30815,704
2026-03-13Koning John ToddOpen-market sale79,789$12.36600,721
2026-03-11Sponsel DavidOpen-market sale163,452$12.52504,932
2026-03-09Hunsaker Craig EGift600$0.001,725,609
2026-03-09Hunsaker Craig EOpen-market sale82,765$12.451,726,209
2026-03-06Hunsaker Craig EOpen-market sale33,602$12.221,808,974
2026-03-05Marshall Tyson EliotOpen-market sale88,835$12.49559,459
2026-03-05Miles PatrickTax withholding219,749$12.575,778,551
2026-03-05Koning John ToddTax withholding68,910$12.57680,510
2026-02-25Miles PatrickGrant / award (derivative)152,853$0.00152,853
2026-02-25Miles PatrickGrant / award48,9135,998,300
2026-02-25Miles PatrickGrant / award305,707$0.005,949,387
2026-02-25Miles PatrickGrant / award611,673$0.005,643,680
2026-02-25Hunsaker Craig EGrant / award (derivative)63,689$0.0063,689
2026-02-25Hunsaker Craig EGrant / award20,9921,842,576
2026-02-25Hunsaker Craig EGrant / award127,378$0.001,821,584
2026-02-25Hunsaker Craig EGrant / award311,110$0.001,694,206
2026-02-25Lish ScottGrant / award (derivative)63,689$0.0063,689
2026-02-25Lish ScottGrant / award20,9921,076,239
2026-02-25Lish ScottGrant / award127,378$0.001,055,247
2026-02-25Lish ScottGrant / award311,110$0.00927,869
2026-02-25Koning John ToddGrant / award (derivative)55,197$0.0055,197

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.