Tenax Therapeutics Inc
Ownership
Ownership Structure
Who owns Tenax Therapeutics Inc (TENX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.2% of the shares are freely tradable; institutional investors hold 63.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| T. Rowe Price Associates, Inc. | 7.89 | 2,951,116 | +0.0 | 03/31/2026 |
| Vivo Capital, LLC | 6.68 | 2,500,000 | +1,100.0 | 06/30/2026 |
| HHG PLC | 4.85 | 1,815,474 | +989.3 | 03/31/2026 |
| Perceptive Advisors LLC | 4.54 | 1,700,000 | +17.4 | 06/30/2026 |
| VR Adviser, LLC | 4.48 | 1,675,262 | +0.0 | 03/31/2026 |
| Ikarian Capital, LLC | 2.72 | 1,017,600 | +5.2 | 03/31/2026 |
| Stonepine Capital Management Llc | 2.61 | 975,200 | +8,106.0 | 03/31/2026 |
| Millennium Management LLC | 2.34 | 876,230 | +64.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Select Biotechnology | 2.59 | 969,200 | +0.0 | 07/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.28 | 852,259 | +0.0 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| ADAR1 Capital Management, LLC | 10% Owner | 6,524,151 | 12,395,887 $ | Sep 3, 2026 | indirect |
| Doogan Declan | Director | 55,274 | 105,021 $ | Sep 16, 2026 | direct |
| Giordano Christopher Thomas | CEO | 22,174 | 42,131 $ | Sep 15, 2026 | direct |
| Staab Thomas R Ii | Chief Financial Officer | 15,675 | 29,783 $ | Sep 11, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | Doogan Declan | Director | Buy | 53,000 | 1.92 | 101,760 |
| Sep 15, 2026 | Giordano Christopher Thomas | CEO | Buy | 4,850 | 1.82 | 8,837 |
| Sep 11, 2026 | Giordano Christopher Thomas | CEO | Buy | 6,000 | 1.88 | 11,250 |
| Sep 11, 2026 | Staab Thomas R Ii | Chief Financial Officer | Buy | 5,675 | 1.94 | 10,981 |
| Sep 3, 2026 | ADAR1 Capital Management, LLC | 10% Owner | Buy | 900,000 | 1.78 | 1,604,160 |
| Sep 2, 2026 | ADAR1 Capital Management, LLC | 10% Owner | Buy | 187,704 | 1.80 | 337,586 |
| Sep 1, 2026 | ADAR1 Capital Management, LLC | 10% Owner | Buy | 179,058 | 1.80 | 321,570 |
| Aug 31, 2026 | ADAR1 Capital Management, LLC | 10% Owner | Buy | 403,571 | 1.79 | 722,594 |
| Aug 24, 2026 | ADAR1 Capital Management, LLC | 10% Owner | Buy | 107,374 | 1.75 | 188,355 |
| Aug 21, 2026 | ADAR1 Capital Management, LLC | 10% Owner | Buy | 716,369 | 1.77 | 1,266,254 |
| Aug 20, 2026 | ADAR1 Capital Management, LLC | 10% Owner | Buy | 202,124 | 1.78 | 359,538 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 28, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.