Outset Medical, Inc. (OM) Insider Trading
Over the last 3 months, OM insiders made 0 open-market buys and 3 sales, a net sale of -$28K (SEC Form 4). Over the last 6 months, 74 institutions increased and 46 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
3
Net (3m)
-$28.4K
Insider trades by month Buys Sells
Aug
Nov
Dec
Jan
Feb
May
Context3-month price +30.3%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 19, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 3,445 | $3.70 |
| May 19, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 1,582 | $3.70 |
| May 19, 2026 | Brottem John L.officer: General Counsel | Sell | 2,638 | $3.70 |
| Apr 8, 2026 | Elliott Derick A.officer: EVP, Commercial | Grant | 96,000 | — |
| Feb 19, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 3,361 | $3.35 |
| Feb 19, 2026 | Brottem John L.officer: General Counsel | Sell | 2,842 | $3.35 |
| Feb 19, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 1,817 | $3.35 |
| Jan 21, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 980 | $4.98 |
| Jan 21, 2026 | Brottem John L.officer: General Counsel | Sell | 1,180 | $5.01 |
| Jan 21, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 11,794 | $5.12 |
| Jan 21, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 5,375 | $5.12 |
| Jan 21, 2026 | Brottem John L.officer: General Counsel | Sell | 9,314 | $5.12 |
| Jan 21, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 2,120 | $5.05 |
| Jan 12, 2026 | Prange Karendirector | Grant | 18,667 | — |
| Jan 8, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 108 | $4.27 |
| Jan 8, 2026 | Brottem John L.officer: General Counsel | Sell | 224 | $4.27 |
| Jan 8, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 1,795 | $4.27 |
| Dec 2, 2025 | Drexler Karendirector | Sell | 1,548 | $4.37 |
| Nov 18, 2025 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 247 | $4.60 |
| Nov 18, 2025 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 916 | $4.60 |
| Nov 18, 2025 | Brottem John L.officer: General Counsel | Sell | 388 | $4.60 |
| Aug 25, 2025 | Nash Marcofficer: EVP, R&D, Operations and Serv. | Grant | 5,617 | — |
| Aug 18, 2025 | Nash Marcofficer: SVP Operations and R&D | Sell | 243 | $12.88 |
| Aug 18, 2025 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 904 | $12.88 |
| Aug 18, 2025 | Brottem John L.officer: General Counsel | Sell | 383 | $12.88 |
| Jun 11, 2025 | Gaeta Reneeofficer: Chief Financial Officer | Grant | 131,425 | — |
| Jun 11, 2025 | Trigg Lesliedirector, officer: Chair and CEO | Grant | 65,103 | — |
| Jun 11, 2025 | Nash Marcofficer: SVP Operations and R&D | Grant | 29,676 | — |
| Jun 11, 2025 | Brottem John L.officer: General Counsel | Grant | 35,993 | — |
| Jun 4, 2025 | Drexler Karendirector | Grant | 8,983 | — |
Source: OM SEC Form 4 filings, latest May 19, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their OM positions over the last 6 months (SEC Form 13F).
Increased
74
New positions
42
Reduced
46
Sold out
46
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 2.7M | May 15, 2026 |
| FMR LLC | Reduced | 2.6M | Feb 17, 2026 |
| BML CAPITAL MANAGEMENT, LLC | Increased | 1.9M | May 6, 2026 |
| PERCEPTIVE ADVISORS LLC | Increased | 1.7M | May 29, 2026 |
| ALYESKA INVESTMENT GROUP, L.P. | Unchanged | 1.6M | Feb 13, 2026 |
| WOODLINE PARTNERS LP | Unchanged | 1.3M | Feb 17, 2026 |
| BLACKROCK, INC. | Increased | 1.3M | Feb 12, 2026 |
| BLACKROCK, INC. | Reduced | 1.3M | May 13, 2026 |
| VANGUARD GROUP INC | Reduced | 978K | Jan 29, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 951K | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 949K | May 18, 2026 |
| PERCEPTIVE ADVISORS LLC | Unchanged | 833K | Feb 17, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 808K | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 764K | May 15, 2026 |
| PFM HEALTH SCIENCES, LP | Increased | 595K | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.