Alphatec Holdings, Inc.
Alphatec Holdings, Inc. (ATEC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ATEC · as of Sep 30, 2025
Ownership Breakdown
293
Institutional Holders
▲ 39 vs Q2
$1.57B
Total Inst. Value
▲ $454.26M vs Q2
153.79M
Shares Outstanding
freeFloat 79.06%
108.24M
13F Shares Held
▲ 7.12M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ATEC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. surgical & medical instruments & apparatus | 10.37M | 6.92% | 6.92% | $150.78B | Nov 12, 2025 | ▲ 854.3K |
VANGUARD GROUP INC surgical & medical instruments & apparatus | 6.82M | 4.55% | 4.55% | $99.09B | Nov 7, 2025 | ▲ 158.3K |
AMERICAN CENTURY COMPANIES INC surgical & medical instruments & apparatus | 6.34M | 4.23% | 4.23% | $92.13B | Nov 12, 2025 | ▲ 159.3K |
UBS GROUP AG surgical & medical instruments & apparatus | 5.21M | 3.48% | 3.48% | $75.78B | Nov 13, 2025 | — held |
ROYAL BANK OF CANADA surgical & medical instruments & apparatus | 5.01M | 3.34% | 3.34% | $72.88B | Nov 14, 2025 | ▲ 560.1K |
MORGAN STANLEY surgical & medical instruments & apparatus | 3.56M | 2.37% | 2.37% | $51.72B | May 27, 2026 | ▲ 1.64M |
BNP PARIBAS ASSET MANAGEMENT HOLDING S.A. surgical & medical instruments & apparatus | 3.26M | 2.17% | 2.17% | $47.35B | Nov 7, 2025 | ▼ 752.1K |
DEUTSCHE BANK AG\ surgical & medical instruments & apparatus | 3.12M | 2.08% | 2.08% | $45.39B | Nov 13, 2025 | ▲ 1.23M |
NUVEEN, LLC surgical & medical instruments & apparatus | 2.91M | 1.94% | 1.94% | $42.34B | Nov 12, 2025 | ▲ 396.4K |
GEODE CAPITAL MANAGEMENT, LLC surgical & medical instruments & apparatus | 2.80M | 1.86% | 1.86% | $40.65B | Nov 12, 2025 | ▲ 98.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
28
Increased
+11.06M shares0
New Positions
first time holders18
Decreased
−4.48M shares0
Sold Out
fully exitedNet shares change (top 50)
+6.57M
+11.06M / −4.48M
Net new holders
+10
0 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ATEC insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Valentine Keith director | May 11, 2026 | Purchase | 35,000 | $7.00 | $245.0K | 232.3K | Form 4 ↗ |
Valentine Keith director | May 8, 2026 | Purchase | 43,847 | $7.54 | $330.6K | 197.3K | Form 4 ↗ |
Valentine Keith director | May 7, 2026 | Purchase | 56,153 | $7.49 | $420.6K | 153.4K | Form 4 ↗ |
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. | Apr 7, 2026 | Tax Withhold | 23,393 | $11.03 | $258.0K | 638.6K | Form 4 ↗ |
Koning John Todd CHIEF FINANCIAL OFFICER | Mar 13, 2026 | Sale | 79,789 | $12.36 | $986.2K | 600.7K | Form 4 ↗ |
Lish Scott CHIEF OPERATING OFFICER | Mar 13, 2026 | Sale | 260,535 | $12.30 | $3.20M | 815.7K | Form 4 ↗ |
Sponsel David EVP, SALES | Mar 11, 2026 | Sale | 163,452 | $12.52 | $2.05M | 504.9K | Form 4 ↗ |
Hunsaker Craig E EVP, PEOPLE & CULTURE | Mar 6, 2026 | Sale | 33,602 | $12.22 | $410.6K | 1.81M | Form 4 ↗ |
Hunsaker Craig E EVP, PEOPLE & CULTURE | Mar 9, 2026 | Sale | 82,765 | $12.45 | $1.03M | 1.73M | Form 4 ↗ |
Hunsaker Craig E EVP, PEOPLE & CULTURE | Mar 9, 2026 | Gift | 600 | — | — | 1.73M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Alphatec Holdings, Inc. (ATEC) is primarily owned by institutional investors, who hold approximately 70.4% of total shares outstanding. Company insiders own approximately 20.94%, while retail and public investors account for the remaining 8.67%.
The largest institutional shareholder of Alphatec Holdings, Inc. is BLACKROCK, INC., holding approximately 10.37 million shares — equal to 6.92% of outstanding shares — as of September 30, 2025.
A total of 293 institutional investors currently hold ATEC stock, with a combined institutional value of approximately $1.57 billion as of the most recent 13F filing period.
Frequently asked questions
ATEC ownershipAlphatec Holdings, Inc. (ATEC) is primarily owned by institutional investors, who hold approximately 70.4% of shares. The largest shareholder is BLACKROCK, INC. with a 6.92% stake. Company insiders hold 20.94%. Data sourced from SEC Form 13F as of September 30, 2025.