Tenon Medical TNON Insider Ownership

Updated Oct 16, 2026

Over the past year, TNON insiders bought at least $500,223 of stock on the open market, and sold $605,668 of stock on the open market.

• By number of insiders, Tenon Medical saw 3 insiders buy and one insider sell on the open market over the past 12 months.
• Among Tenon Medical's insiders, the largest open-market purchases in the past 12 months were by HRT Financial LP (10% owner), totaling $500,223, most recently on September 10, 2026.
• On the selling side, HRT Financial LP (10% owner) sold the most Tenon Medical stock on the open market over the past 12 months, $605,668, most recently on September 10, 2026.
• Per Business Quant, TNON insiders together hold 69K shares based on their latest Form 4 filings, or 10.34% of the 667.05K shares outstanding.
• Indirect holdings, through trusts, partnerships, family members and other entities, make up 30.26% (20.88K shares) of Tenon Medical's insider total, with the other 69.74% (48.12K shares) held directly.
• TNON's insider total is spread across 11 insiders who have filed a Form 4 in the past two years.
• Tenon Medical's three biggest insider holders are Wyatt D. Geist (Chief Innovation Officer, 18.42K shares), HRT Financial LP (10% owner, 15.84K shares) and Nathaniel A. Grawey (Chief Commercial Officer, 13.8K shares), based on their latest Form 4 filings.
• Of the shares held by TNON insiders, 26.70% belong to Wyatt D. Geist.
• In the past year, 11 insiders of Tenon Medical submitted 28 Form 4 filings reporting trades, awards or other transactions.
• Insider figures for TNON include Form 4 filings through September 11, 2026.