TENX insider buying – Tenax Therapeutics, Inc.
18 insider purchases since 2016 worth $6.0M by 12 different insiders. Last 12 months: 11 purchases, $5.1M. Most recent filing: 2026-09-17.
Small company Public float $24M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 7 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Schneeberger Daniel 10% Owner | $3.2M 2× · 1,796,200 sh | 2026-08-20 2026-08-31 | – | 5,624,151 shares as of 2026-09-02 | Holds - never sold |
| ADAR1 Capital Management, LLC 10% Owner | $1.6M 1× · 900,000 sh | 2026-09-03 2026-09-03 | – | 6,524,151 shares as of 2026-09-08 | Holds - never sold |
| ARMISTICE CAPITAL, LLC Director | $683,383 4× · 464,384 sh | 2020-08-19 2020-09-01 | – | 7,859,980 shares as of 2020-09-03 | Holds - never sold |
| Doogan Declan Director | $101,760 1× · 53,000 sh | 2026-09-16 2026-09-16 | – | 55,274 shares as of 2026-09-17 | Holds - never sold |
| Rich Stuart Officer | $96,430 2× · 10,000 sh | 2025-12-02 2025-12-08 | – | 12,654 shares as of 2026-01-13 | Holds - never sold |
| MCGAULEY THOMAS CFO | $58,180 1× · 8,000 sh | 2025-11-17 2025-11-17 | – | 8,000 shares as of 2026-02-03 | Holds - never sold |
| Mitchum James P. Director | $50,503 1× · 19,000 sh | 2016-02-02 2016-02-02 | – | 26,000 shares as of 2016-11-22 | Holds - never sold |
| PROEHL GERALD T Director | $49,969 1× · 29,882 sh | 2016-11-22 2016-11-22 | – | 1,667 shares as of 2026-01-13 | Holds - never sold |
| Armistice Capital Master Fund Ltd. Director | $45,547 1× · 32,000 sh | 2020-09-04 2020-09-04 | – | 8,062,894 shares as of 2020-09-09 | Holds - never sold |
| Giordano Christopher Thomas CEO | $40,100 2× · 13,455 sh | 2025-11-18 2026-09-11 | – | 22,174 shares as of 2026-09-15 | Holds - never sold |
| Almenoff June Sherie Director | $14,953 1× · 1,993 sh | 2025-11-17 2025-11-17 | – | 1,993 shares as of 2026-01-13 | Holds - never sold |
| STAAB THOMAS R II CFO | $11,010 1× · 5,675 sh | 2026-09-11 2026-09-11 | – | 15,675 shares as of 2026-09-15 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 6 | $4.9M | 5 | – | – |
| 2025 | 5 | $189,556 | 4 | – | – |
| 2020 | 5 | $728,930 | 2 | – | – |
| 2016 | 2 | $100,472 | 2 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-17 | Doogan Declan | Director | 53,000 | $1.92 | $101,760 | +2330.7% | SEC |
| 2026-09-15 | STAAB THOMAS R II | CFO | 5,675 | $1.94 | $11,010 | +56.8% | SEC |
| 2026-09-15 | Giordano Christopher Thomas | CEO | 10,850 | $1.85 | $20,107 | +95.8% | SEC |
| 2026-09-08 | ADAR1 Capital Management, LLC | 10% Owner | 900,000 | $1.78 | $1.6M | +16.0% | SEC |
| 2026-09-02 | Schneeberger Daniel | 10% Owner | 770,333 | $1.79 | $1.4M | +15.9% | SEC |
| 2026-08-24 | Schneeberger Daniel | 10% Owner | 1,025,867 | $1.77 | $1.8M | +26.8% | SEC |
| 2025-12-10 | Rich Stuart | Officer | 5,000 | $10.16 | $50,800 | +1879.7% | SEC |
| 2025-12-05 | Rich Stuart | Officer | 5,000 | $9.13 | $45,630 | SEC | |
| 2025-11-20 | Giordano Christopher Thomas | CEO | 2,605 | $7.67 | $19,993 | SEC | |
| 2025-11-19 | MCGAULEY THOMAS | CFO | 8,000 | $7.27 | $58,180 | SEC | |
| 2025-11-19 | Almenoff June Sherie | Director | 1,993 | $7.50 | $14,953 | SEC | |
| 2020-09-09 | Armistice Capital Master Fund Ltd. | Director | 32,000 | $1.42 | $45,547 | +1.6% | SEC |
| 2020-09-03 | ARMISTICE CAPITAL, LLC | Director | 86,000 | $1.43 | $123,240 | +4.5% | SEC |
| 2020-08-31 | ARMISTICE CAPITAL, LLC | Director | 32,000 | $1.47 | $47,000 | +1.7% | SEC |
| 2020-08-26 | ARMISTICE CAPITAL, LLC | 10% Owner | 34,903 | $1.51 | $52,700 | +1.9% | SEC |
| 2020-08-21 | ARMISTICE CAPITAL, LLC | Director | 311,481 | $1.48 | $460,443 | +20.4% | SEC |
| 2016-11-29 | PROEHL GERALD T | Director | 29,882 | $1.67 | $49,969 | SEC | |
| 2016-02-19 | Mitchum James P. | Director | 19,000 | $2.66 | $50,503 | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
Get every new insider purchase the day it's filed
Daily report with all SEC insider buys, cluster buys, company events and the crypto money-flow radar.
Get started free