Tenon Medical

TNON · NASDAQ

$2.51+$0.06 (+2.45%)TodayMarket closed · Oct 20, 4:05 PM ET

Prev close $2.45

Who owns TNON

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 0.5% of TNON’s shares.

SiVantage Inc0.2%
Warberg Asset Management LLC0.1%
HRT Financial LP0.1%
Foster (Steven M)0.0%
Next 6 largest institutions0.2%
All other shareholders99.5%

Top institutional holders of TNON
Holder	Shares	% of shares	Change, last filing	Filed
SiVantage Inc	28.19K	0.16%	+7.82K	Jun 8, 2026
Warberg Asset Management LLC	12.30K	0.07%	+12.30K	Jun 30, 2026
HRT Financial LP	12.06K	0.07%	+9.64K	Aug 31, 2026
Foster (Steven M)	7.51K	0.04%	−1.19K	Aug 3, 2026
Grawey (Nathaniel A.)	6.84K	0.04%	+0	Jun 8, 2026
Armistice Capital LLC	4.92K	0.03%	+4.92K	Jun 30, 2026
Ginn (Richard)	4.78K	0.03%	−1.28K	Aug 3, 2026
Geist (Wyatt D.)	4.50K	0.03%	+0	Jun 8, 2026
Ferrari (Richard M)	3.84K	0.02%	+1.84K	Jul 31, 2026
Williamson (Kevin)	2.56K	0.01%	−371	Aug 3, 2026

Largest mutual fund holders

Top mutual fund holders of TNON
Holder	Shares	% of shares	Change, last filing	Filed
Vanguard Extended Market Index Fund	2.05K	0.01%	+0	Jul 31, 2026
Fidelity Extended Market Index Fund	1.45K	0.01%	+0	Jul 31, 2026
Fidelity Series Total Market Index Fund	345	0.00%	+0	Jul 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders bought $500.22K (9 trades) and sold $605.67K (9 trades) of TNON on the open market.

Latest TNON insider transactions
Insider	Date	Type	Shares	Price	Value
HRT FINANCIAL LP	Sep 10, 2026	Sale	65.58K	$5.56	$364.64K
HRT FINANCIAL LP	Sep 10, 2026	Buy	8.43K	$4.92	$41.48K
HRT FINANCIAL LP	Sep 10, 2026	Buy	28.27K	$4.02	$113.63K
HRT FINANCIAL LP	Sep 10, 2026	Buy	31.23K	$2.92	$91.18K
Williamson Kevin	Sep 9, 2026	Tax withholding	11	$3.45	$38
HRT FINANCIAL LP	Sep 9, 2026	Sale	9.95K	$4.27	$42.48K
HRT FINANCIAL LP	Sep 9, 2026	Buy	39.51K	$3.40	$134.33K
HRT FINANCIAL LP	Sep 9, 2026	Sale	50.40K	$2.61	$131.53K
Williamson Kevin	Sep 8, 2026	Option exercise	30	—	—
Williamson Kevin	Sep 8, 2026	Option exercise	30	—	—

Short interest

Settled Sep 30, 2026

Shares short: 60.79K
Days to cover: 1.00
% of shares outstanding: 0.35%
Average daily volume: 5.52M
Change since last report: −88.7%

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