OM

Outset Medical, Inc.

Electromedical & Electrotherapeutic ApparatusNasdaqAccelerated filer

Total Trades

215

Buys

1

Sells

159

Largest Trade

N/A

Insiders

11

Institutional Funds

75

Inst. Value

$1M+

Activist Filings

49

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Brottem John L.General CounselEXERCISE$50K–$100K10K$9.48Feb 17, 2022
Vazquez MartinCOOSELL$100K–$500K5K$37.44Feb 3, 2022
Vazquez MartinCOOEXERCISE$15K–$50K5K$8.62Feb 3, 2022
Trigg LeslieCEOGRANTN/A12KFeb 3, 2022
Trigg LeslieCEOEXERCISE$50K–$100K20K$3.88Feb 3, 2022
Trigg LeslieCEOSELL$500K+20K$37.50Feb 3, 2022
Williamson Steven S.Chief Commercial O…GRANTN/A9KJan 25, 2022
Williamson Steven S.Chief Commercial O…SELL$50K–$100K2K$37.74Jan 25, 2022
Brottem John L.General CounselEXERCISE$50K–$100K10K$9.48Jan 20, 2022
Brottem John L.General CounselSELL$100K–$500K10K$35.61Jan 20, 2022
Vazquez MartinCOOEXERCISE$50K–$100K16K$4.06Jan 5, 2022
Vazquez MartinCOOSELL$500K+16K$47.05Jan 5, 2022
Trigg LeslieCEOSELL$1M+43K$47.10Jan 4, 2022
Trigg LeslieCEOEXERCISE$100K–$500K43K$3.88Jan 4, 2022
Brottem John L.General CounselSELL$100K–$500K3K$47.05Jan 4, 2022
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Institutional Ownership

13F filings as of Dec 31, 2025 · 75 funds holding

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

Durable Capital Partners LP

SC 13G/A · Feb 17, 2026

0.0%

0 shares

BML Investment Partners, L.P.

SC 13G/A · Feb 13, 2026

10.5%

1.9M shares

BANK OF AMERICA CORP /DE/

SC 13G · Feb 11, 2026

5.2%

951K shares

BML Investment Partners, L.P.

SC 13G · Jan 14, 2026

9.4%

1.7M shares

Durable Capital Partners LP

SC 13G/A · Nov 14, 2025

7.6%

1.4M shares

0.0%

2K shares

BlackRock, Inc.

SC 13G/A · Oct 17, 2025

6.8%

1.2M shares

The Vanguard Group

SC 13G · Jul 29, 2025

5.6%

991K shares

BlackRock, Inc.

SC 13G · Jul 18, 2025

5.5%

981K shares

Perceptive Advisors LLC

SC 13G/A · May 15, 2025

6.7%

1.2M shares

Alyeska Investment Group, L.P.

SC 13G · May 15, 2025

9.6%

1.7M shares

Woodline Partners LP

SC 13G · May 15, 2025

7.5%

1.3M shares

8.9%

1.6M shares

FMR LLC

SC 13G/A · Apr 7, 2025

14.5%

2.6M shares

PFM Health Sciences, LP

SC 13G · Mar 17, 2025

9.4%

25.0M shares

Perceptive Advisors LLC

SC 13G · Mar 1, 2025

9.5%

5.6M shares

FMR LLC

SC 13G/A · Feb 12, 2025

7.0%

3.7M shares

The Vanguard Group

SC 13G/A · Jan 31, 2025

5.0%

2.6M shares

Durable Capital Partners LP

SC 13G · Jan 10, 2025

9.9%

26.6M shares

The Vanguard Group

SC 13G/A · Nov 12, 2024

5.1%

2.6M shares

Millennium Management LLC

SC 13G/A · Nov 12, 2024

3.6%

1.9M shares

FMR LLC

SC 13G/A · Nov 12, 2024

9.2%

4.8M shares

The Vanguard Group

SC 13G/A · Nov 4, 2024

5.1%

2.6M shares

3.4%

1.8M shares

Morgan Stanley I.R.S. # 36-3145972

SC 13G/A · Sep 9, 2024

1.4%

708K shares

JPMORGAN CHASE & CO. 13-2624428

SC 13G/A · Sep 5, 2024

0.2%

135K shares

Millennium Management LLC

SC 13G · Aug 23, 2024

5.5%

2.8M shares

BlackRock, Inc.

SC 13G/A · Jul 8, 2024

1.7%

880K shares

10.1%

5.1M shares

5.9%

3.0M shares

6.3%

3.2M shares

The Vanguard Group - 23-1945930

SC 13G/A · Feb 13, 2024

7.8%

3.9M shares

Bellevue Group AG

SC 13G/A · Feb 13, 2024

3.5%

1.8M shares

BlackRock, Inc.

SC 13G/A · Jan 26, 2024

7.6%

3.8M shares

JPMORGAN CHASE & CO. 13-2624428

SC 13G/A · Jan 23, 2024

9.4%

4.7M shares

JPMORGAN CHASE & CO. 13-2624428

SC 13G/A · Sep 8, 2023

10.0%

5.0M shares

Bellevue Group AG

SC 13G · Feb 14, 2023

5.9%

2.8M shares

PFM Health Sciences, LP

SC 13G/A · Feb 14, 2023

0.0%

6 shares

7.3%

3.5M shares

AllianceBernstein L.P. 13-4064930

SC 13G/A · Feb 14, 2023

0.1%

56K shares

BlackRock, Inc.

SC 13G/A · Jan 31, 2023

7.2%

3.5M shares

JPMORGAN CHASE & CO. 13-2624428

SC 13G/A · Jan 25, 2023

9.3%

4.5M shares

JPMORGAN CHASE & CO. 13-2624428

SC 13G/A · Jul 7, 2022

10.8%

5.2M shares

Perceptive Advisors LLC

SC 13G/A · Feb 14, 2022

4.0%

1.9M shares

AllianceBernstein L.P. 13-4064930

SC 13G · Feb 14, 2022

5.6%

2.6M shares

PFM Health Sciences, LP

SC 13G/A · Feb 14, 2022

6.2%

6 shares

D1 Capital Partners L.P.

SC 13G/A · Feb 14, 2022

0.0%

0 shares

Warburg Pincus LLC

SC 13G/A · Feb 11, 2022

0.0%

0 shares

JPMORGAN CHASE & CO. 13-2624428

SC 13G · Jan 26, 2022

6.1%

2.9M shares

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