TriSalus Life Sciences, Inc.
TriSalus Life Sciences, Inc. (TLSI) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · TLSI · as of Sep 30, 2025
Ownership Breakdown
55
Institutional Holders
▲ 8 vs Q2
$44.47M
Total Inst. Value
▼ $1.69M vs Q2
37.91M
Shares Outstanding
freeFloat 39.56%
9.56M
13F Shares Held
▲ 1.09M 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
TLSI largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
NANTAHALA CAPITAL MANAGEMENT, LLC blank checks | 2.04M | 6.20% | 6.20% | $9.49B | Nov 14, 2025 | ▲ 40.2K |
AWM INVESTMENT COMPANY, INC. blank checks | 1.25M | 3.80% | 3.80% | $5.81B | Nov 13, 2025 | — held |
VANGUARD GROUP INC blank checks | 1.16M | 3.52% | 3.52% | $5.39B | Nov 7, 2025 | ▲ 345.2K |
GILDER GAGNON HOWE & CO LLC blank checks | 1.05M | 3.18% | 3.18% | $4.87B | Nov 14, 2025 | ▼ 45.9K |
BLACKROCK, INC. blank checks | 787.9K | 2.39% | 2.39% | $3.66B | Nov 12, 2025 | ▲ 166.2K |
WEALTHCARE ADVISORY PARTNERS LLC blank checks | 643.7K | 1.96% | 1.96% | $2.99B | Nov 7, 2025 | — held |
ALYESKA INVESTMENT GROUP, L.P. blank checks | 557.5K | 1.69% | 1.69% | $2.59B | Nov 17, 2025 | — held |
GEODE CAPITAL MANAGEMENT, LLC blank checks | 554.5K | 1.69% | 1.69% | $2.58B | Nov 12, 2025 | ▲ 99.4K |
STATE STREET CORP blank checks | 192.6K | 58.55% | 58.55% | $895.74M | Nov 14, 2025 | ▲ 77.0K |
BANK OF AMERICA CORP /DE/ blank checks | 189.2K | 57.50% | 57.50% | $879.69M | Feb 3, 2026 | ▲ 274 |
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
18
Increased
+939.4K shares7
New Positions
first time holders11
Decreased
−110.2K shares0
Sold Out
fully exitedNet shares change (top 50)
+829.2K
+939.4K / −110.2K
Net new holders
+14
7 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
TLSI insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
17
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 |
|---|---|---|---|---|---|---|---|
Marshak Richard Chief Commercial Officer | May 15, 2026 | Sale | 543 | $2.67 | $1.4K | 125.1K | Form 4 ↗ |
Wahlstrom Mats director | May 15, 2026 | Purchase | 60,000 | $2.53 | $151.8K | 147.6K | Form 4 ↗ |
Stansky Michael P director | May 15, 2026 | Purchase | 410,000 | $2.50 | $1.02M | 1.24M | Form 4 ↗ |
Stansky Michael P director | May 15, 2026 | Purchase | 200,000 | $2.50 | $500.0K | 399.7K | Form 4 ↗ |
Szela Mary T CEO and President | May 15, 2026 | Purchase | 39,682 | $2.59 | $102.8K | 1.07M | Form 4 ↗ |
Patience David Chief Financial Officer | May 15, 2026 | Purchase | 7,100 | $2.43 | $17.3K | 275.8K | Form 4 ↗ |
Gordon Gary B. director | May 15, 2026 | Purchase | 10,000 | $2.46 | $24.6K | 72.5K | Form 4 ↗ |
HICKS KERRY R director | May 14, 2026 | Award | 28,201 | — | — | 542.8K | Form 4 ↗ |
HICKS KERRY R director | May 14, 2026 | Award | 56,403 | $2.52 | $142.1K | 145.6K | Form 4 ↗ |
Wahlstrom Mats director | May 14, 2026 | Award | 75,204 | $2.52 | $189.5K | 276.1K | 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
TriSalus Life Sciences, Inc. (TLSI) is primarily owned by institutional investors, who hold approximately 25.2% of total shares outstanding. Company insiders own approximately 60.44%, while retail and public investors account for the remaining 14.34%.
The largest institutional shareholder of TriSalus Life Sciences, Inc. is NANTAHALA CAPITAL MANAGEMENT, LLC, holding approximately 2.04 million shares — equal to 6.20% of outstanding shares — as of September 30, 2025.
A total of 55 institutional investors currently hold TLSI stock, with a combined institutional value of approximately $44,470,162 as of the most recent 13F filing period.
Frequently asked questions
TLSI ownershipTriSalus Life Sciences, Inc. (TLSI) is primarily owned by institutional investors, who hold approximately 25.2% of shares. The largest shareholder is NANTAHALA CAPITAL MANAGEMENT, LLC with a 6.20% stake. Company insiders hold 60.44%. Data sourced from SEC Form 13F as of September 30, 2025.