Alpha Tau Medical Ltd.
Alpha Tau Medical Ltd. (DRTS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · DRTS · as of Sep 30, 2025
Ownership Breakdown
31
Institutional Holders
▲ 7 vs Q2
$8.26M
Total Inst. Value
▲ $3.31M vs Q2
90.33M
Shares Outstanding
freeFloat 68.45%
1.83M
13F Shares Held
▲ 245,804 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
DRTS largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
HIGHTOWER ADVISORS, LLC surgical & medical instruments & apparatus | 686.6K | 85.44% | 85.44% | $3.10B | Nov 7, 2025 | — held |
LEVIN CAPITAL STRATEGIES, L.P. surgical & medical instruments & apparatus | 204.7K | 25.48% | 25.48% | $923.26M | Nov 7, 2025 | ▲ 12.2K |
KOVITZ INVESTMENT GROUP PARTNERS, LLC surgical & medical instruments & apparatus | 203.2K | 25.29% | 25.29% | $916.57M | Nov 10, 2025 | ▼ 1.6K |
MARINER, LLC surgical & medical instruments & apparatus | 123.3K | 15.34% | 15.34% | $555.86M | Nov 14, 2025 | ▲ 80.1K |
RENAISSANCE TECHNOLOGIES LLC surgical & medical instruments & apparatus | 61.9K | 7.70% | 7.70% | $279.17M | Nov 13, 2025 | ▲ 32.5K |
CITADEL ADVISORS LLC surgical & medical instruments & apparatus | 60.6K | 7.54% | 7.54% | $273.31M | Nov 14, 2025 | ▼ 5.9K |
SATOVSKY ASSET MANAGEMENT LLC surgical & medical instruments & apparatus | 53.6K | 6.67% | 6.67% | $241.76M | Nov 14, 2025 | — held |
SUMMIT FINANCIAL, LLC surgical & medical instruments & apparatus | 51.6K | 6.42% | 6.42% | $232.76M | Nov 14, 2025 | NEW |
MORGAN STANLEY surgical & medical instruments & apparatus | 50.0K | 6.22% | 6.22% | $225.54M | May 27, 2026 | ▲ 11.5K |
PRIVATE ADVISOR GROUP, LLC surgical & medical instruments & apparatus | 47.6K | 5.92% | 5.92% | $214.60M | Nov 13, 2025 | — held |
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
8
Increased
+174.0K shares8
New Positions
first time holders4
Decreased
−22.0K shares2
Sold Out
fully exitedNet shares change (top 50)
+152.0K
+174.0K / −22.0K
Net new holders
+10
8 new / 2 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
DRTS 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
2
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 |
|---|---|---|---|---|---|---|---|
Levy Raphi Chief Financial Officer | Jun 3, 2026 | Sale | 17,500 | $10.90 | $190.8K | 162.7K | Form 4 ↗ |
Levy Raphi Chief Financial Officer | Jun 3, 2026 | Sale | 15,000 | $10.76 | $161.4K | 147.7K | 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
Alpha Tau Medical Ltd. (DRTS) is primarily owned by institutional investors, who hold approximately 2.0% of total shares outstanding. Company insiders own approximately 31.55%, while retail and public investors account for the remaining 66.42%.
The largest institutional shareholder of Alpha Tau Medical Ltd. is HIGHTOWER ADVISORS, LLC, holding approximately 686,554 shares — equal to 85.44% of outstanding shares — as of September 30, 2025.
A total of 31 institutional investors currently hold DRTS stock, with a combined institutional value of approximately $8,263,970 as of the most recent 13F filing period.
Frequently asked questions
DRTS ownershipAlpha Tau Medical Ltd. (DRTS) is primarily owned by institutional investors, who hold approximately 2.0% of shares. The largest shareholder is HIGHTOWER ADVISORS, LLC with a 85.44% stake. Company insiders hold 31.55%. Data sourced from SEC Form 13F as of September 30, 2025.