Outset Medical, Inc. (OM) Insider Trading
Over the last 3 months, OM insiders made 0 open-market buys and 4 sales, a net sale of -$134K (SEC Form 4). Over the last 6 months, 67 institutions increased and 53 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
4
Net (3m)
-$133.9K
Insider trades by month Buys Sells
Dec
Jan
Feb
May
Jun
Aug
Context3-month price -19.2%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | Gaeta Reneeofficer: Chief Financial Officer | Sell | 4,543 | $4.39 |
| Aug 18, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 3,437 | $4.39 |
| Aug 18, 2026 | Brottem John L.officer: General Counsel | Sell | 2,632 | $4.39 |
| Jun 29, 2026 | Brottem John L.officer: General Counsel | Grant | 59,830 | — |
| Jun 29, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Grant | 99,160 | — |
| Jun 29, 2026 | Gaeta Reneeofficer: Chief Financial Officer | Grant | 71,630 | — |
| Jun 5, 2026 | Prange Karendirector | Grant | 10,667 | — |
| Jun 5, 2026 | GROSSMAN D KEITHdirector | Grant | 10,667 | — |
| Jun 5, 2026 | Gaeta Reneeofficer: Chief Financial Officer | Sell | 17,672 | $4.94 |
| Jun 5, 2026 | LANG BRENT D.director | Grant | 10,667 | — |
| Jun 5, 2026 | OBOYLE KEVIN Cdirector | Grant | 10,667 | — |
| Jun 5, 2026 | HACKETT PATRICK Tdirector | Grant | 10,667 | — |
| Jun 5, 2026 | Drexler Karendirector | Grant | 10,667 | — |
| May 19, 2026 | Brottem John L.officer: General Counsel | Sell | 2,638 | $3.70 |
| May 19, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 1,582 | $3.70 |
| May 19, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 3,445 | $3.70 |
| Apr 8, 2026 | Elliott Derick A.officer: EVP, Commercial | Grant | 96,000 | — |
| Feb 19, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 1,817 | $3.35 |
| 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 |
| Jan 21, 2026 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 11,794 | $5.12 |
| Jan 21, 2026 | Brottem John L.officer: General Counsel | Sell | 1,180 | $5.01 |
| 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 21, 2026 | Nash Marcofficer: EVP Operations R&D & Service | Sell | 980 | $4.98 |
| 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 | Trigg Lesliedirector, officer: Chair and CEO | Sell | 1,795 | $4.27 |
| Jan 8, 2026 | Brottem John L.officer: General Counsel | Sell | 224 | $4.27 |
Source: OM SEC Form 4 filings, latest Aug 18, 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
67
New positions
45
Reduced
53
Sold out
24
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 2.7M | Aug 13, 2026 |
| FMR LLC | Increased | 2.7M | May 15, 2026 |
| BML Capital Management, LLC | Increased | 2.5M | Aug 7, 2026 |
| BML CAPITAL MANAGEMENT, LLC | Increased | 1.9M | May 6, 2026 |
| BLACKROCK, INC. | Reduced | 1.3M | May 13, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 999K | Aug 14, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 949K | May 18, 2026 |
| PERCEPTIVE ADVISORS LLC | Unchanged | 833K | May 29, 2026 |
| PERCEPTIVE ADVISORS LLC | Unchanged | 833K | Aug 14, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 808K | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 780K | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 764K | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 666K | Aug 14, 2026 |
| PFM HEALTH SCIENCES, LP | Increased | 595K | May 15, 2026 |
| PFM Health Sciences, LP | Reduced | 582K | Aug 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.