Tenon Medical, Inc. (TNONW) shareholders
TNONWNasdaqSurgical & Medical Instruments & ApparatusFiscal year ends December 31Also trades as TNON
$0.00−0.00 (-36.17%)
Close on Oct 30, 2026Market cap $1.37MP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
7M
Shares held, 13F filers
Institutional holders
9
0 new, 2 sold out
Net institutional buying
7M
In Q2 2026
Insider trades, 12 months
12 buys · 9 sales
Net sold $105.45K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| SiVantage Inc. | 986,528 | 12.50% | 13D (active) | Aug 1, 2025 |
| Armistice Capital, LLC Joint filing with Steven Boyd (9.99%) | 54,554 | 9.99% | 13G (passive) | Jun 30, 2026 |
| TMD Wealth Management LLC | – | – | 13G (passive) amendment | Jul 1, 2024 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of TNONW | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Focus Partners Wealth | 4,720,000 | – | $50.98K | +4,718,232 | 0.00% |
| Clear Street Group Inc. | 952,794 | – | $10.29K | +925,568 | 0.00% |
| Spectrum Asset Management, Inc. (NB/CA) | 679,420 | – | $7.34K | +660,008 | 0.00% |
| Heights Capital Management, Inc | 140,236 | – | $1.52K | +136,229 | 0.00% |
| Aqr Capital Management LLC | 131,000 | – | $1.42K | +127,257 | 0.00% |
| Citadel Advisors LLC | 70,499 | – | $839 | +68,421 | 0.00% |
| Armistice Capital, LLC | 22,250 | – | $240 | +21,614 | 0.00% |
| Gts Securities LLC | 21,044 | – | $231 | +20,440 | 0.00% |
| UBS Group AG | 499 | – | $5 | +496 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|
| Q2 2026 | 9 | 7M | 0 / 9 | 0 / 2 | 7M | 0M |
| Q1 2026 | 11 | 0M | 4 / 3 | 0 / 1 | 0M | 0M |
| Q4 2025 | 8 | 0M | 2 / 0 | 5 / 3 | 0M | 0M |
| Q3 2025 | 9 | 0M | 2 / 0 | 5 / 0 | 0M | 0M |
| Q2 2025 | 8 | 0M | 2 / 1 | 2 / 2 | 0M | 0M |
| Q1 2025 | 8 | 0M | 0 / 3 | 4 / 0 | 0M | 0M |
| Q4 2024 | 8 | 0M | 0 / 3 | 1 / 1 | 0M | 0M |
| Q3 2024 | 9 | 0M | 5 / 2 | 1 / 1 | 0M | 0M |
| Q2 2024 | 7 | 0M | 0 / 0 | 3 / 1 | 0M | 0M |
| Q1 2024 | 8 | 0M | 0 / 2 | 3 / 0 | 0M | 0M |
| Q4 2023 | 8 | 0M | 1 / 4 | 1 / 2 | 0M | 0M |
| Q3 2023 | 9 | 0M | 4 / 4 | 0 / 0 | 0M | 0M |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | Latest filing |
|---|---|---|---|
| Steven M. Foster | CEO and President, Director | 262,962 | Aug 4, 2026 |
| Richard Ginn | Chief Technology Officer, Director | 167,357 | Aug 4, 2026 |
| Kevin Williamson | Chief Financial Officer | 2,580 | Sep 10, 2026 |
| Wyatt D. Geist | Chief Innovation Officer | 644,735 | May 5, 2026 |
| Nathaniel A. Grawey | Chief Commercial Officer | 482,865 | May 5, 2026 |
| Stephen Hochschuler | Director | 38,395 | Aug 4, 2026 |
| Ivan Howard | Director | 85,112 | Aug 4, 2026 |
| Kristine M. Jacques | Director | 20,876 | Aug 4, 2026 |
| Richard Ferrari | Director | 293,375 | Aug 4, 2026 |
| Robert K. Weigle | Director | 18,284 | Aug 4, 2026 |
| Financial Lp Hrt | 10% owner | 15,839 | Sep 11, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Financial Lp Hrt 10% owner | Sep 10, 2026 | Buy | +31,227 | $2.92 | $91.18K | 15,839 |
| Financial Lp Hrt 10% owner | Sep 10, 2026 | Buy | +28,267 | $4.02 | $113.63K | 15,839 |
| Financial Lp Hrt 10% owner | Sep 10, 2026 | Buy | +8,431 | $4.92 | $41.48K | 15,839 |
| Financial Lp Hrt 10% owner | Sep 10, 2026 | Sale | −65,582 | $5.56 | $364.64K | 15,839 |
| Financial Lp Hrt 10% owner | Sep 9, 2026 | Sale | −9,948 | $4.27 | $42.48K | 18,182 |
| Financial Lp Hrt 10% owner | Sep 9, 2026 | Buy | +39,508 | $3.40 | $134.33K | 18,182 |
| Financial Lp Hrt 10% owner | Sep 9, 2026 | Sale | −50,395 | $2.61 | $131.53K | 18,182 |
| Kevin Williamson Chief Financial Officer | Sep 9, 2026 | Tax withholding | −11 | $3.45 | $38 | 2,580 |
| Financial Lp Hrt 10% owner | Sep 8, 2026 | Buy | +707 | $3.34 | $2.36K | 2,653 |
| Kevin Williamson Chief Financial Officer | Sep 8, 2026 | Option exercise | +30 | – | – | 2,591 |
| Financial Lp Hrt 10% owner | Sep 4, 2026 | Sale | −1,506 | $3.70 | $5.57K | 1,946 |
| Financial Lp Hrt 10% owner | Sep 3, 2026 | Buy | +1,658 | $3.98 | $6.60K | 3,452 |
| Financial Lp Hrt 10% owner | Sep 2, 2026 | Sale | −450 | $4.53 | $2.04K | 1,794 |
| Financial Lp Hrt 10% owner | Sep 1, 2026 | Buy | +1,790 | $4.57 | $8.18K | 2,244 |
| Financial Lp Hrt 10% owner | Aug 31, 2026 | Sale | −1,276 | $4.66 | $5.95K | 454 |
| Financial Lp Hrt 10% owner | Aug 28, 2026 | Sale | −2,091 | $7.90 | $16.52K | 1,730 |
| Financial Lp Hrt 10% owner | Aug 28, 2026 | Sale | −4,932 | $7.07 | $34.87K | 1,730 |
| Financial Lp Hrt 10% owner | Aug 28, 2026 | Buy | +5,981 | $6.35 | $37.98K | 1,730 |
| Financial Lp Hrt 10% owner | Aug 28, 2026 | Buy | +12,376 | $5.21 | $64.48K | 1,730 |
| Financial Lp Hrt 10% owner | Aug 27, 2026 | Sale | −419 | $4.96 | $2.08K | 9,604 |
| Richard Ginn Chief Technology Officer, Director | Aug 3, 2026 | Tax withholding | −44,809 | $0.20 | $8.96K | 167,357 |
| Steven M. Foster CEO and President, Director | Aug 3, 2026 | Tax withholding | −41,788 | $0.20 | $8.36K | 262,962 |
| Kevin Williamson Chief Financial Officer | Aug 3, 2026 | Tax withholding | −12,978 | $0.20 | $2.60K | 89,602 |
| Richard Ferrari Director | Jul 31, 2026 | Option exercise | +64,479 | – | – | 135,243 |
| Kristine M. Jacques Director | Jul 31, 2026 | Option exercise | +10,147 | – | – | 20,876 |
| Richard Ginn Chief Technology Officer, Director | Jul 31, 2026 | Option exercise | +126,577 | – | – | 212,166 |
| Steven M. Foster CEO and President, Director | Jul 31, 2026 | Option exercise | +140,936 | – | – | 304,750 |
| Robert K. Weigle Director | Jul 31, 2026 | Option exercise | +10,732 | – | – | 18,284 |
| Kevin Williamson Chief Financial Officer | Jul 31, 2026 | Option exercise | +58,987 | – | – | 102,580 |
| Stephen Hochschuler Director | Jul 31, 2026 | Option exercise | +10,732 | – | – | 18,670 |
| Ivan Howard Director | Jul 31, 2026 | Option exercise | +10,732 | – | – | 19,194 |
| Wyatt D. Geist Chief Innovation Officer | May 1, 2026 | Award | +136,401 | – | – | 487,166 |
| Nathaniel A. Grawey Chief Commercial Officer | May 1, 2026 | Award | +68,201 | – | – | 243,584 |
| Kevin Williamson Chief Financial Officer | Mar 3, 2026 | Option exercise | +1,041 | – | – | 43,593 |
| Kevin Williamson Chief Financial Officer, Director | Jan 5, 2026 | Tax withholding | −18,518 | $0.93 | $17.22K | 42,552 |
| Richard Ginn Chief Technology Officer, Director | Jan 5, 2026 | Tax withholding | −47,426 | $0.93 | $44.11K | 85,589 |
| Robert K. Weigle Director | Jan 5, 2026 | Tax withholding | −3,413 | $0.93 | $3.17K | 7,552 |
| Stephen Hochschuler Director | Jan 5, 2026 | Tax withholding | −3,327 | $0.93 | $3.09K | 7,938 |
| Ivan Howard Director | Jan 5, 2026 | Tax withholding | −3,327 | $0.93 | $3.09K | 8,462 |
| Kevin Williamson Chief Financial Officer, Director | Jan 1, 2026 | Option exercise | +58,987 | – | – | 61,070 |
| Steven M. Foster CEO and President, Director | Jan 1, 2026 | Option exercise | +140,936 | – | – | 163,814 |
| Richard Ginn Chief Technology Officer, Director | Jan 1, 2026 | Option exercise | +126,577 | – | – | 133,015 |
| Robert K. Weigle Director | Jan 1, 2026 | Option exercise | +10,732 | – | – | 10,965 |
| Stephen Hochschuler Director | Jan 1, 2026 | Option exercise | +10,732 | – | – | 11,265 |
| Kristine M. Jacques Director | Jan 1, 2026 | Option exercise | +583 | – | – | 10,729 |
| Kristine M. Jacques Director | Jan 1, 2026 | Option exercise | +10,146 | – | – | 10,146 |
| Ivan Howard Director | Jan 1, 2026 | Option exercise | +10,732 | – | – | 11,789 |
| Richard Ferrari Director | Jan 1, 2026 | Option exercise | +64,478 | – | – | 70,764 |
| Steven M. Foster CEO and President, Director | Nov 14, 2025 | Buy | +19,455 | – | – | 22,878 |
| Nathaniel A. Grawey Chief Commercial Officer | Nov 14, 2025 | Buy | +101,167 | – | – | 239,281 |
| Wyatt D. Geist Chief Innovation Officer | Nov 14, 2025 | Buy | +19,455 | – | – | 157,569 |
| Kevin Williamson Chief Financial Officer, Director | Sep 3, 2025 | Option exercise | +2,083 | – | – | 2,083 |
| Ivan Howard Director | May 22, 2025 | Option exercise | +78 | – | – | 1,057 |
| Robert K. Weigle Director | May 22, 2025 | Option exercise | +78 | – | – | 233 |
| Ivan Howard Director | May 22, 2024 | Option exercise | +78 | – | – | 979 |
| Robert K. Weigle Director | May 22, 2024 | Option exercise | +78 | – | – | 155 |
| Steven M. Foster CEO and President, Director | Nov 27, 2023 | Tax withholding | −901 | $2.00 | $1.80K | 8,730 |
| Richard Ginn Chief Technology Officer, Director | Nov 27, 2023 | Tax withholding | −2,302 | $2.00 | $4.60K | 70,963 |
| Dick Steven M. Van Chief Financial Officer | Nov 22, 2023 | Conversion | +1,522 | $2.02 | $3.07K | 11,565 |
| Steven M. Foster CEO and President, Director | Nov 22, 2023 | Conversion | +3,624 | $2.02 | $7.32K | 9,631 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 15, 2026 (FINRA, reported twice a month)
Short % of shares outstanding
–
0M shares short
Days to cover
1.0
At 0M shares a day
Change since last report
+20835.3%
From 0M shares
Short volume, 20 days
49.7%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Tenon Medical's stock actually held short. Settlement fails (shares not delivered on time) peaked at 20,950 shares on Sep 11, 2026 over the last 90 days.