Outset Medical OM Insider Ownership

NASDAQ OM

$4.05 -0.17 (-4.03%)

At close: Oct 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

3.69Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

19.09%

▼-0.056% pp QoQ

Shares Held by Insiders

3.59Mn

filed for Sep 2026

▼-0.29% QoQ

Shares Outstanding

18.80Mn

18,797,000 shares

Direct Holdings

869.95K

Indirect: 2.72Mn

Net Shares Traded (QoQ)

-10.61K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the past year, OM insiders bought $870,260 of stock (244.91K shares) and sold $369,187 (79.96K shares) on the open market.

By number of insiders, Outset Medical saw one insider buy and 5 insiders sell on the open market over the past 12 months.
Among Outset Medical insiders, Braden Michael Leonard (10% owner) led open-market buying over the past 12 months with $870,260 of purchases (244.91K shares); the latest was on October 2, 2026.
Meanwhile, the largest open-market sales of OM in the past 12 months were by Leslie Trigg (Chair and CEO), totaling $122,064 (26.87K shares), most recently on August 17, 2026.
Outside the open market, Outset Medical insiders received 355.95K shares in stock awards and acquired 617.5K shares through option exercises and conversions over the past 12 months.
Business Quant data shows Outset Medical insiders holding 3.83Mn shares in total in their latest Form 4 filings, up 6.51% from 3.6Mn shares at the end of Q2 2026.
Outset Medical insiders hold 869.95K shares directly (22.70% of their total) and 2.96Mn shares (77.30%) indirectly, through entities such as trusts and partnerships.
Business Quant counts 14 insiders with holdings in Outset Medical stock, among the officers, directors and 10% owners who have filed a Form 4 in the past two years.
Outset Medical's top three insider holders by shares held are Braden Michael Leonard (10% owner, 2.76Mn shares), Leslie Trigg (Chair and CEO, 236.26K shares) and Patrick T. Hackett (Director, 230.84K shares).
Of the shares held by OM insiders, 72.13% belong to Braden Michael Leonard.
Institutions owned 73.67% of OM shares as of Q2 2026; insiders' latest Form 4 filings account for about 20.39%, leaving roughly 5.94% with other investors, including the public.
In the past year, 12 insiders of Outset Medical submitted 34 Form 4 filings reporting trades, awards or other transactions.
Insider figures for OM include Form 4 filings through October 5, 2026.

Form 4 Holdings

Insiders Holding OM

Insiders 21

Shares held 3.69Mn

Of outstanding 19.66%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Braden Michael Leonard	TenPercentOwner	0	2,764,610	2,764,610	74.8%	05 Oct, 2026
2	Leslie Trigg	Chair And Ceo	194,597	0	194,597	5.3%	18 Aug, 2026
3	Renee Gaeta	Chief Financial Officer	180,840	0	180,840	4.9%	18 Aug, 2026
4	Patrick T Hackett	Director	105,839	0	105,839	2.9%	05 Jun, 2026
5	Derick A. Elliott	Evp, Commercial	96,000	0	96,000	2.6%	08 Apr, 2026
6	John L. Brottem	General Counsel	87,475	0	87,475	2.4%	18 Aug, 2026
7	Marc Nash	Evp Operations Rd Service	38,393	0	38,393	1.0%	19 May, 2026
8	Kevin C Oboyle	Director	34,785	0	34,785	0.9%	05 Jun, 2026
9	Karen Prange	Director	29,334	0	29,334	0.8%	05 Jun, 2026
10	Brent D. Lang	Director	28,518	0	28,518	0.8%	05 Jun, 2026
11	D Keith Grossman	Director	24,585	0	24,585	0.7%	05 Jun, 2026
12	Steven S. Williamson	Chief Commercial Officer	21,358	0	21,358	0.6%	16 Feb, 2024
13	Karen Drexler	Director	21,317	0	21,317	0.6%	05 Jun, 2026
14	Jean-Olivier Racine	Chief Technology Officer	17,689	0	17,689	0.5%	10 May, 2024
15	Nabeel Ahmed	Chief Financial Officer	16,096	0	16,096	0.4%	16 May, 2025
16	Andrea Lynn Saia	Director	12,175	0	12,175	0.3%	04 Jun, 2025
17	Martin Vazquez	Chief Operating Officer	6,874	0	6,874	0.2%	02 Mar, 2023
18	James F. Hinrichs	Director	5,357	0	5,357	0.1%	29 May, 2024
19	Stacey L. Porter	Chief People Officer	4,097	0	4,097	0.1%	17 Jan, 2024
20	Dale E Jones	Director	3,061	0	3,061	0.1%	29 May, 2024
21	Catherine M. Szyman	Director	1,640	0	1,640	0.0%	31 May, 2023

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

815 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
01 Oct, 2026	Braden Michael Leonard	TenPercentOwner	Acquired P	228,334	$3.53	$806.02K	2,748,035	Indirect
02 Oct, 2026	Braden Michael Leonard	TenPercentOwner	Acquired P	16,575	$3.88	$64.24K	2,764,610	Indirect
17 Aug, 2026	John L. Brottem	General Counsel	Disposed S	2,632	$4.39	$11.55K	87,475	Direct
17 Aug, 2026	Renee Gaeta	Chief Financial Officer	Disposed S	4,543	$4.39	$19.94K	180,840	Direct
17 Aug, 2026	Leslie Trigg	Chair And Ceo	Disposed S	3,437	$4.39	$15.09K	194,597	Direct
26 Jun, 2026	Leslie Trigg	Chair And Ceo	Acquired A	99,160	$0.00	$0	198,034	Direct
26 Jun, 2026	John L. Brottem	General Counsel	Acquired A	59,830	$0.00	$0	90,107	Direct
26 Jun, 2026	Renee Gaeta	Chief Financial Officer	Acquired A	71,630	$0.00	$0	185,383	Direct
04 Jun, 2026	D Keith Grossman	Director	Acquired A	10,667	$0.00	$0	24,585	Direct
04 Jun, 2026	Patrick T Hackett	Director	Acquired A	10,667	$0.00	$0	105,839	Direct
04 Jun, 2026	Karen Prange	Director	Acquired A	10,667	$0.00	$0	29,334	Direct
04 Jun, 2026	Brent D. Lang	Director	Acquired A	10,667	$0.00	$0	28,518	Direct
03 Jun, 2026	Renee Gaeta	Chief Financial Officer	Disposed S	17,672	$4.94	$87.30K	113,753	Direct
04 Jun, 2026	Karen Drexler	Director	Acquired A	10,667	$0.00	$0	21,317	Direct
04 Jun, 2026	Kevin C Oboyle	Director	Acquired A	10,667	$0.00	$0	34,785	Direct
15 May, 2026	Leslie Trigg	Chair And Ceo	Disposed S	3,445	$3.70	$12.75K	98,874	Direct
15 May, 2026	John L. Brottem	General Counsel	Disposed S	2,638	$3.70	$9.76K	30,277	Direct
15 May, 2026	Marc Nash	Evp Operations Rd Service	Disposed S	1,582	$3.70	$5.85K	38,393	Direct
15 May, 2026	Braden Michael Leonard	TenPercentOwner	Acquired X	323,000	$5.00	$1.62Mn	2,519,701	Indirect
08 May, 2026	Braden Michael Leonard	TenPercentOwner	Acquired X	197,600	$5.00	$988.00K	2,099,801	Indirect

Showing 1 to 20 of 815 transactions