TENX insider buying and SEC filings, explained
Tenax Therapeutics, Inc. · CIK 34956
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$6.6M
Insiders who bought
7
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 19–21, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 922,849 shares indirectly between Oct 19 and Oct 21 at about $1.59 ($1.5M), reported as a purchase (code P). Indirect holdings up 14% to 7,447,000 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Oct 21, 2026, 4:49 PM ET |
| Sep 16, 2026 | Purchase (code P) | Declan Doogan (Director) bought 53,000 shares at $1.92 ($102K), reported as a purchase (code P). Holdings up 999%+ to 55,274 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 17, 2026 |
| Sep 11–15, 2026 | Purchase (code P) | Christopher Thomas Giordano (CEO and Director) bought 10,850 shares between Sep 11 and Sep 15 at about $1.85 ($20K), reported as a purchase (code P). Holdings up 96% to 22,174 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 15, 2026 |
| Sep 11, 2026 | Purchase (code P) | Thomas R. Staab II (CFO) bought 5,675 shares at about $1.94 ($11K), reported as a purchase (code P). Holdings up 57% to 15,675 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 15, 2026 |
| Sep 3, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 900,000 shares indirectly at about $1.78 ($1.6M), reported as a purchase (code P). Indirect holdings up 16% to 6,524,151 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Sep 8, 2026 |
| Aug 31–Sep 2, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 770,333 shares indirectly between Aug 31 and Sep 2 at about $1.79 ($1.4M), reported as a purchase (code P). Indirect holdings up 16% to 5,624,151 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Sep 2, 2026 |
| Aug 20–24, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 1,025,867 shares indirectly between Aug 20 and Aug 24 at about $1.77 ($1.8M), reported as a purchase (code P). Indirect holdings up 27% to 4,853,818 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Aug 24, 2026 |
| Dec 8–9, 2025 | Purchase (code P) | Stuart Rich (Chief Medical Officer and Director) bought 5,000 shares directly and indirectly (by trust) between Dec 8, 2025 and Dec 9, 2025 at about $10.16 ($51K), reported as a purchase (code P). Direct holdings up 90% to 5,266 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 10, 2025 |
| Dec 2–4, 2025 | Purchase (code P) | Stuart Rich (Chief Medical Officer and Director) bought 5,000 shares directly and indirectly (by trust) between Dec 2, 2025 and Dec 4, 2025 at about $9.13 ($46K), reported as a purchase (code P). Direct holdings up 940% to 2,766 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 5, 2025 |
| Nov 18–20, 2025 | Purchase (code P) | Christopher Thomas Giordano (CEO and Director) bought 2,605 shares between Nov 18, 2025 and Nov 20, 2025 at about $7.68 ($20K), reported as a purchase (code P). New position of 2,605 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 20, 2025 |
| Nov 17–18, 2025 | Purchase (code P) Amended filing | June Sherie Almenoff (Director) bought 1,993 shares indirectly (by entity) between Nov 17, 2025 and Nov 18, 2025 at about $7.50 ($15K), reported as a purchase (code P). New position of 1,993 shares. Not marked as a 10b5-1 plan trade. This amends a filing from Nov 19, 2025. | SEC filing Filed Nov 20, 2025 |
| Nov 17, 2025 | Purchase (code P) | Thomas Mcgauley (CFO) bought 8,000 shares directly and indirectly (by spouse) at about $7.27 ($58K), reported as a purchase (code P). New position of 2,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 19, 2025 |
10 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
4 insiders bought in 30 days
$4.9M in purchases since Aug 24, 2026 · Purchases traded Aug 24, 2026 to Sep 16, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Daniel Schneeberger (10% owner) | $1.8M | Aug 24, 2026 | SEC filing |
| Daniel Schneeberger (10% owner) | $1.4M | Sep 2, 2026 | SEC filing |
| Daniel Schneeberger (10% owner) | $1.6M | Sep 3, 2026 | SEC filing |
| Thomas R. Staab II (CFO) | $11K | Sep 11, 2026 | SEC filing |
| Christopher Thomas Giordano (CEO) | $20K | Sep 15, 2026 | SEC filing |
| Declan Doogan (Director) | $102K | Sep 16, 2026 | SEC filing |
4 insiders bought in 30 days
$190K in purchases since Nov 17, 2025 · Purchases traded Nov 17, 2025 to Dec 9, 2025 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Thomas Mcgauley (CFO) | $58K | Nov 17, 2025 | SEC filing |
| June Sherie Almenoff (Director) | $15K | Nov 18, 2025 | SEC filing |
| Christopher Thomas Giordano (CEO) | $20K | Nov 20, 2025 | SEC filing |
| Stuart Rich (Chief Medical Officer) | $46K | Dec 4, 2025 | SEC filing |
| Stuart Rich (Chief Medical Officer) | $51K | Dec 9, 2025 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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