TENX
Tenax Therapeutics Inc
NASDAQ: TENX · HEALTHCARE · BIOTECHNOLOGY
$11.95
+2.97% today
Updated 2026-06-04
Market cap
$284.62M
P/E ratio
—
P/S ratio
414.72x
EPS (TTM)
$-1.41
Dividend yield
—
52W range
$5 – $18
Volume
0.6M
Tenax Therapeutics Inc (TENX) Insider transactions
Net insider activity
Net buying (25,605,955 shares)
Buy transactions
88
Sell transactions
12
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-11 | STAAB, THOMAS R II | Chief Financial Officer | Buy | 450,000 | — | — |
| 2026-05-11 | STAAB, THOMAS R II | Chief Financial Officer | Buy | 10,000 | — | — |
| 2026-01-30 | MCGAULEY, THOMAS | Interim CFO | Buy | 50,000 | — | — |
| 2026-01-09 | RICH, STUART | Director, Chief Medical Officer | Buy | 250,000 | — | — |
| 2026-01-09 | PROEHL, GERALD T | Director | Buy | 3,000 | — | — |
| 2026-01-09 | HUNTER, ROBYN | Director | Buy | 30,000 | — | — |
| 2026-01-09 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 450,000 | — | — |
| 2026-01-09 | DOOGAN, DECLAN | Director | Buy | 30,000 | — | — |
| 2026-01-09 | DAVIDSON, MICHAEL H. | Director | Buy | 30,000 | — | — |
| 2026-01-09 | ALMENOFF, JUNE SHERIE | Director | Buy | 30,000 | — | — |
| 2025-12-09 | RICH, STUART | Director, Chief Medical Officer | Buy | 2,500 | $10.22 | $25542.00 |
| 2025-12-08 | RICH, STUART | Director, Chief Medical Officer | Buy | 2,500 | $10.10 | $25250.50 |
| 2025-12-04 | RICH, STUART | Director, Chief Medical Officer | Buy | 2,500 | $9.20 | $22998.00 |
| 2025-12-03 | RICH, STUART | Director, Chief Medical Officer | Buy | 1,500 | $9.08 | $13617.90 |
| 2025-12-02 | RICH, STUART | Director, Chief Medical Officer | Buy | 1,000 | $9.01 | $9005.90 |
| 2025-11-20 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 538 | $7.59 | $4082.72 |
| 2025-11-19 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 455 | $7.51 | $3416.64 |
| 2025-11-18 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 1,612 | $7.75 | $12500.42 |
| 2025-11-18 | ALMENOFF, JUNE SHERIE | Director | Buy | 1,900 | $7.52 | $14279.83 |
| 2025-11-17 | MCGAULEY, THOMAS | Interim CFO | Buy | 5,000 | $7.23 | $36140.00 |
| 2025-11-17 | MCGAULEY, THOMAS | Interim CFO | Buy | 2,000 | $7.34 | $14674.00 |
| 2025-11-17 | MCGAULEY, THOMAS | Interim CFO | Buy | 1,000 | $7.35 | $7350.00 |
| 2025-11-17 | ALMENOFF, JUNE SHERIE | Director | Buy | 93 | $7.15 | $664.95 |
| 2025-07-01 | PROEHL, GERALD T | Director | Buy | 80,000 | — | — |
| 2025-07-01 | HUNTER, ROBYN | Director | Buy | 80,000 | — | — |
| 2025-07-01 | DOOGAN, DECLAN | Director | Buy | 80,000 | — | — |
| 2025-07-01 | DAVIDSON, MICHAEL H. | Director | Buy | 80,000 | — | — |
| 2025-07-01 | ALMENOFF, JUNE SHERIE | Director | Buy | 80,000 | — | — |
| 2025-05-16 | RICH, STUART | Director, Chief Medical Officer | Buy | 625,000 | — | — |
| 2025-05-16 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 1,400,000 | — | — |
| 2024-12-10 | RICH, STUART | Director, Chief Medical Officer | Buy | 500,000 | — | — |
| 2024-12-10 | PROEHL, GERALD T | Director | Buy | 100,000 | — | — |
| 2024-12-10 | HUNTER, ROBYN | Director | Buy | 100,000 | — | — |
| 2024-12-10 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 1,250,000 | — | — |
| 2024-12-10 | DOOGAN, DECLAN | Director | Buy | 100,000 | — | — |
| 2024-12-10 | DAVIDSON, MICHAEL H. | Director | Buy | 100,000 | — | — |
| 2024-12-10 | ALMENOFF, JUNE SHERIE | Director | Buy | 100,000 | — | — |
| 2024-08-08 | PROEHL, GERALD T | Director | Buy | 16,660 | — | — |
| 2024-08-08 | PROEHL, GERALD T | Director | Buy | 31,654 | — | — |
| 2024-08-08 | PROEHL, GERALD T | Director | Buy | 1,666 | — | — |
| 2024-08-08 | DAVIDSON, MICHAEL H. | Director | Buy | 25,000 | — | — |
| 2024-08-08 | DAVIDSON, MICHAEL H. | Director | Buy | 47,500 | — | — |
| 2024-08-08 | DAVIDSON, MICHAEL H. | Director | Buy | 2,500 | — | — |
| 2024-05-17 | RICH, STUART | Director, Chief Medical Officer | Buy | 119 | — | — |
| 2024-05-17 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 437 | — | — |
| 2022-09-21 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Sale | 1,909,585 | — | — |
| 2022-08-11 | DOOGAN, DECLAN | Director, 10% Owner | Sale | 567,871 | — | — |
| 2022-06-09 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Buy | 100,000 | — | — |
| 2022-06-09 | PROEHL, GERALD T | Director | Buy | 5,000 | — | — |
| 2022-06-09 | HUNTER, ROBYN | Director | Buy | 6,250 | — | — |
| 2022-06-09 | GIORDANO, CHRISTOPHER THOMAS | Director, CEO | Buy | 200,000 | — | — |
| 2022-06-09 | DOOGAN, DECLAN | Director, 10% Owner | Buy | 5,000 | — | — |
| 2022-06-09 | DAVIDSON, MICHAEL H. | Director | Buy | 5,000 | — | — |
| 2022-06-09 | ALMENOFF, JUNE SHERIE | Director | Buy | 5,000 | — | — |
| 2022-05-18 | ARMISTICE, CAPITAL, LLC | Director | Sale | 4,773,269 | — | — |
| 2022-05-18 | ARMISTICE, CAPITAL, LLC | Director | Buy | 10,596,027 | — | — |
| 2022-05-18 | ARMISTICE, CAPITAL, LLC | Director | Sale | 4,607,692 | — | — |
| 2022-05-18 | ARMISTICE, CAPITAL, LLC | Director | Sale | 3,175,924 | — | — |
| 2022-05-18 | ARMISTICE, CAPITAL, LLC | Director | Buy | 10,596,027 | — | — |
| 2022-05-18 | ARMISTICE, CAPITAL, LLC | Director | Buy | 2,360,313 | — | — |
| 2022-05-18 | ARMISTICE, CAPITAL, LLC | Director | Sale | 2,072,538 | — | — |
| 2021-11-29 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Buy | 1,909,585 | — | — |
| 2021-11-29 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Sale | 1,909,585 | — | — |
| 2021-10-12 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Sale | 1,909,585 | — | — |
| 2021-10-12 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Buy | 1,909,585 | — | — |
| 2021-07-08 | ARMISTICE, CAPITAL, LLC | Director | Buy | 4,773,269 | — | — |
| 2021-07-06 | DITONNO, ANTHONY A | Director, CEO | Buy | 50,000 | — | — |
| 2021-06-30 | DOOGAN, DECLAN | Director, 10% Owner | Sale | 567,871 | — | — |
| 2021-06-11 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Sale | 3,581 | — | — |
| 2021-06-11 | RICH, STUART | Director, Chief Medical Officer, 10% Owner | Buy | 3,581,000 | — | — |
| 2021-06-11 | DOOGAN, DECLAN | Director, 10% Owner | Sale | 3,070 | — | — |
| 2021-06-11 | DOOGAN, DECLAN | Director, 10% Owner | Buy | 3,070,000 | — | — |
| 2021-06-11 | DAVIDSON, MICHAEL H. | Director | Sale | 512 | — | — |
| 2021-06-11 | DAVIDSON, MICHAEL H. | Director | Buy | 512,000 | — | — |
| 2021-06-10 | PROEHL, GERALD T | Director | Buy | 5,000 | — | — |
| 2021-06-10 | MITCHUM, JAMES P. | Director | Buy | 5,000 | — | — |
| 2021-06-10 | DOOGAN, DECLAN | Director, 10% Owner | Buy | 6,250 | — | — |
| 2021-06-10 | DAVIDSON, MICHAEL H. | Director | Buy | 6,250 | — | — |
| 2021-06-10 | ALMENOFF, JUNE SHERIE | Director | Buy | 6,250 | — | — |
| 2021-01-15 | RICH, STUART | Chief Medical Officer | Buy | 250,000 | — | — |
| 2021-01-15 | RICH, STUART | Chief Medical Officer | Buy | 3,581 | — | — |
| 2021-01-15 | RICH, STUART | Chief Medical Officer | Buy | 662,517 | — | — |
| 2021-01-05 | JEBSEN, MICHAEL B | CFO | Buy | 70,000 | — | — |
| 2021-01-05 | DITONNO, ANTHONY A | Director, CEO | Buy | 90,000 | — | — |
| 2020-09-08 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | 8,543 | $1.46 | $12472.78 |
| 2020-09-08 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | — | — | — |
| 2020-09-04 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | 23,457 | $1.41 | $33074.37 |
| 2020-09-04 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | — | — | — |
| 2020-09-03 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | 36,000 | $1.39 | $50040.00 |
| 2020-09-03 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | — | — | — |
| 2020-09-02 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | 20,000 | $1.47 | $29400.00 |
| 2020-09-02 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | — | — | — |
| 2020-09-01 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | 30,000 | $1.46 | $43800.00 |
| 2020-09-01 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | — | — | — |
| 2020-08-31 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | 20,000 | $1.45 | $29000.00 |
| 2020-08-31 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | — | — | — |
| 2020-08-27 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | 12,000 | $1.50 | $18000.00 |
| 2020-08-27 | ARMISTICE, CAPITAL, LLC | Director, 10% Owner | Buy | — | — | — |
| 2020-08-26 | ARMISTICE, CAPITAL, LLC | 10% Owner | Buy | 12,000 | $1.50 | $18000.00 |
| 2020-08-26 | ARMISTICE, CAPITAL, LLC | 10% Owner | Buy | — | — | — |
Frequently asked questions
Are TENX insiders buying or selling?
Over the transactions on record, TENX insiders have been net buyers, with about $0.00 in stock sold across 12 sales, against 21 open-market purchases.
Does insider selling at TENX mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which TENX insiders are selling the most?
Recent selling is concentrated in a few names. RICH, STUART accounts for the largest share on record, with about $0.00 sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.