Alphatec Holdings, Inc. - Common Stock, par value $0.0001 per share (ATEC)

CUSIP: 02081G201

Q4 2025 13F Holders as of 31 Dec 2025

Security type / class
Equity / Common Stock, par value $0.0001 per share
Total 13F shares
119,421,809
Total 13F value
$2,512,526,352
Holder snapshot 6 visible 7 signals
Share change
+10,205,910
Put/Call ratio
17%
SEC-reported price per share
$21.04
Number of holders
283
Value change
+$234,953,104
Number of buys
135
Open additional details 1 more signal available
Number of sells
129
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
148,491,921

Security key

02081G201

Report period

Q4 2025

Institutions

283

Top holders

10

ATEC full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2026 Previous quarter: Q3 2025 Alphatec Holdings, Inc. SEC filings Alphatec Holdings, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of ATEC - Alphatec Holdings, Inc. - Common Stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Squadron Capital LLC
Disclosed value leader
Squadron Capital LLC
Comparable rows
15/15
Latest evidence
15 Dec 2025
13D/G 3/4/5 13F Lead comparable stake: 8.9% 13D/G row: Squadron Capital LLC Showing 1-6 of 15 holder rows.

Quick read

Squadron Capital LLC leads the comparable SEC ownership view at 8.9%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Squadron Capital LLC's linked filing trail.
Comparable ownership Top 5
Squadron Capital LLC 8.9%
L-5 Healthcare Partners, LLC 5%
Jennifer N. Pritzker 7.2%
Squadron Capital Holdings LLC 7.2%
Ward W. Woods Jr. 1.5%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Squadron Capital LLC
13D/G 3/4/5
Jennifer N. Pritzker · 10%+ Owner
13D/G 3/4/5
8.9%
$259,293,623
13,215,781 shares
 $0 15 Dec 2025
L-5 Healthcare Partners, LLC
3/4/5 13D/G
Director by deputization, 10%+ Owner
3/4/5 13D/G
5%
from 13D/G
$166,223,070
11,081,538 shares
 — 10 May 2023
Jennifer N. Pritzker
3/4/5
10%+ Owner
3/4/5
7.2%
$225,036,896
10,703,045 shares
 -$15,650,098 08 Dec 2025
Squadron Capital Holdings LLC
3/4/5
10%+ Owner
3/4/5
7.2%
$223,865,296
10,645,045 shares
 -$15,650,098 08 Dec 2025
Ward W. Woods Jr.
3/4/5
Director
3/4/5
1.5%
$28,008,326
2,210,602 shares
 — 11 Jun 2025
Mortimer Berkowitz III
3/4/5
Director
3/4/5
0.85%
$16,728,085
1,261,164 shares
 -$998,125 09 Sep 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
283
Shares
119,421,809
Rows available
283
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2025 vs Q3 2025 Across Filers

Q3 2025 holders
269
Q4 2025 holders
283
Holder diff
14
Investor Q3 2025 Shares Q4 2025 Shares Share Diff Share Chg % Q3 2025 value Q4 2025 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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