TNON insider buying and SEC filings, explained
Tenon Medical, Inc. · CIK 1560293
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$485K
Insiders who bought
1
Sold (not marked 10b5-1)
$606K
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 9–10, 2026 | Sale | HRT FINANCIAL LP (10% owner) sold 125,925 shares between Sep 9 and Sep 10 at about $4.28 ($539K). Holdings down 89% to 15,839 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 11, 2026 |
| Sep 8–10, 2026 | Purchase (code P) | HRT FINANCIAL LP (10% owner) bought 108,140 shares between Sep 8 and Sep 10 at about $3.54 ($383K), reported as a purchase (code P). New position of 15,839 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 11, 2026 |
| Sep 4, 2026 | Sale | HRT FINANCIAL LP (10% owner) sold 1,506 shares at $3.70 ($6K). Holdings down 44% to 1,946 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 8, 2026 |
| Sep 3, 2026 | Purchase (code P) | HRT FINANCIAL LP (10% owner) bought 1,658 shares at $3.98 ($7K), reported as a purchase (code P). Holdings up 92% to 3,452 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 8, 2026 |
| Sep 2, 2026 | Sale | HRT FINANCIAL LP (10% owner) sold 450 shares at $4.53 ($2K). Holdings down 20% to 1,794 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 3, 2026 |
| Sep 1, 2026 | Purchase (code P) | HRT FINANCIAL LP (10% owner) bought 1,790 shares at $4.57 ($8K), reported as a purchase (code P). Holdings up 394% to 2,244 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 3, 2026 |
| Aug 28–31, 2026 | Sale | HRT FINANCIAL LP (10% owner) sold 8,299 shares between Aug 28 and Aug 31 at about $6.91 ($57K). Holdings down 95% to 454 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 1, 2026 |
| Aug 28, 2026 | Purchase (code P) | HRT FINANCIAL LP (10% owner) bought 18,357 shares at about $5.58 ($102K), reported as a purchase (code P). New position of 1,730 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 1, 2026 |
| Aug 27, 2026 | Sale | HRT FINANCIAL LP (10% owner) sold 419 shares at $4.96 ($2K). Holdings down 4% to 9,604 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 31, 2026 |
| Nov 14, 2025 | Other purchase | Steven M. Foster (CEO and Director) bought 19,455 shares; the filing does not report a price. New position of 19,455 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
| Nov 14, 2025 | Purchase (code P) | Steven M. Foster (CEO and Director) bought 19,455 shares; the filing does not report a price. Holdings up 568% to 22,878 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
| Nov 14, 2025 | Other purchase | Wyatt D. Geist (Chief Innovation Officer) bought 19,455 shares; the filing does not report a price. New position of 19,455 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
| Nov 14, 2025 | Purchase (code P) | Wyatt D. Geist (Chief Innovation Officer) bought 19,455 shares; the filing does not report a price. Holdings up 14% to 157,569 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
| Nov 14, 2025 | Other purchase | Nathaniel A. Grawey (Chief Commercial Officer) bought 101,167 shares; the filing does not report a price. New position of 101,167 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
| Nov 14, 2025 | Purchase (code P) | Nathaniel A. Grawey (Chief Commercial Officer) bought 101,167 shares; the filing does not report a price. Holdings up 73% to 239,281 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
24 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
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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