Outset Medical, Inc. OM NASDAQ

NASDAQ Global Select • Healthcare • Medical - Devices • US • USD

SharesGrow Score

49/100

3/7 Pass

SharesGrow Intrinsic Value

Outset Medical, Inc. (OM) has 20 known insider and institutional holders on record. The largest holder is D1 Capital Partners L.P. with 4,575,754 shares. Other notable holders include Leonard Braden Michael and Williamson Steven S..

Over the last 12 months, insiders have made 41 transactions in OM stock — 13 buys (valued at RSU Award) and 23 sells (valued at $265.24K). Insider selling has exceeded buying during this period.

OM Insider Ownership

Top Holder

D1 Capital Partners L.P.

4,575,754 shares

Buys (12 mo)

$0.00 value

Sells (12 mo)

$265.24K value

12-Month Transaction Activity

Buy 32%

Sell 56%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	D1 Capital Partners L.p.	10 Percent Owner	4,575,754	2020-09-28	100%
2	Leonard Braden Michael	10 Percent Owner	1,902,201	2026-02-13	42%
3	Williamson Steven S.	Chief Commercial Officer	320,347	2024-02-16	7%
4	Racine Jean-olivier	Chief Technology Officer	265,325	2024-05-10	6%
5	Gaeta Renee	Chief Financial Officer	131,425	2025-06-11	3%
6	Trigg Leslie	Chair and CEO	102,342	2026-02-19	2%
7	Hackett Patrick T	Director	95,172	2025-06-04	2%
8	Hinrichs James F.	Director	80,349	2024-05-29	2%
9	Vazquez Martin	Chief Operating Officer	68,007	2023-03-02	1%
10	Porter Stacey L.	Chief People Officer	62,216	2024-01-17	1%
11	Jones Dale E	Director	45,918	2024-05-29	1%
12	Nash Marc	EVP Operations R&d & Service	39,988	2026-02-19	1%
13	Brottem John L.	General Counsel	32,935	2026-02-19	1%
14	Warburg Pincus Llc	10 Percent Owner	26,086	2021-04-15	1%
15	Warburg Pincus X, L.p.	10 Percent Owner	26,086	2021-04-15	1%
16	Szyman Catherine M.	Director	24,596	2023-05-31	1%
17	Oboyle Kevin C	Director	24,118	2025-06-04	1%
18	Prange Karen	Director	18,667	2026-01-12	0%
19	Lang Brent D.	Director	17,851	2025-06-04	0%
20	Ahmed Nabeel	Chief Financial Officer	16,096	2025-05-16	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-02-12	Leonard Braden Michael	10 Percent Owner	Unknown	110,000	$2.50	$275K
2026-02-17	Nash Marc	EVP Operations R&d & Service	Informative Sell	1,817	$3.35	$6.09K
2026-02-17	Brottem John L.	General Counsel	Informative Sell	2,842	$3.35	$9.52K
2026-02-17	Trigg Leslie	Chair and CEO	Informative Sell	3,361	$3.35	$11.26K
2026-02-12	Leonard Braden Michael	10 Percent Owner	Unknown	-	-	-
2026-01-21	Nash Marc	EVP Operations R&d & Service	Informative Sell	980	$4.98	$4.88K
2026-01-20	Nash Marc	EVP Operations R&d & Service	Informative Sell	5,375	$5.12	$27.52K
2026-01-21	Brottem John L.	General Counsel	Informative Sell	1,180	$5.01	$5.91K
2026-01-20	Brottem John L.	General Counsel	Informative Sell	9,314	$5.12	$47.69K
2026-01-21	Trigg Leslie	Chair and CEO	Informative Sell	2,120	$5.05	$10.71K
2026-01-20	Trigg Leslie	Chair and CEO	Informative Sell	11,794	$5.12	$60.39K
2026-01-09	Prange Karen	Director	RSU Award	18,667	-	-
2026-01-09	Prange Karen	Officer	Unknown	-	-	-
2026-01-07	Nash Marc	EVP Operations R&d & Service	Informative Sell	108	$4.27	$461.16
2026-01-07	Brottem John L.	General Counsel	Informative Sell	224	$4.27	$956.48
2026-01-07	Trigg Leslie	Chair and CEO	Informative Sell	1,795	$4.27	$7.66K
2025-12-01	Drexler Karen	Director	Informative Sell	1,548	$4.37	$6.76K
2025-11-17	Nash Marc	EVP Operations R&d & Service	Informative Sell	247	$4.60	$1.14K
2025-11-17	Brottem John L.	General Counsel	Informative Sell	388	$4.60	$1.78K
2025-11-17	Trigg Leslie	Chair and CEO	Informative Sell	916	$4.60	$4.21K
2025-08-25	Nash Marc	EVP, R&d, Operations and Serv.	RSU Award	5,617	-	-
2025-08-15	Nash Marc	SVP Operations and R&d	Informative Sell	243	$12.88	$3.13K
2025-08-15	Brottem John L.	General Counsel	Informative Sell	383	$12.88	$4.93K
2025-08-15	Trigg Leslie	Chair and CEO	Informative Sell	904	$12.88	$11.64K
2025-06-10	Nash Marc	SVP Operations and R&d	RSU Award	29,676	-	-