Outset Medical, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Outset Medical, Inc. (OM), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are OM insiders buying or selling?
In the last 12 months, Outset Medical, Inc. insiders reported 1 open-market purchase ($870.3K) and 20 sales ($369.2K) — net buying of $501.1K. Since September 2020, Trabud has recorded 251 Form 4 filings for OM: 7 buys ($2.0M) and 244 sells ($870.0M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $870.3K by Braden Michael Leonard (10% Owner) on Oct 5, 2026. SEC ↗
- The most recent open-market purchase was reported on Oct 5, 2026 (13 days ago).
Key Statistics (September 2020 – Oct 5, 2026)
Total Form 4 filings
251
SEC EDGAR
Insider filers
16
Insider buys (7)
$2.0M
Insider sells (244)
$870.0M
Insider sentiment
Net sellingNet insider flow of $868.0M in net selling since September 2020, and $501.1K in net buying over the last 12 months. 1 insider buy in the last 90 days.
Recent OM insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 5, 2026 | Braden Michael Leonard | 10% Owner | Purchase | 244.9K | $3.55 | $870.3K | SEC ↗ |
| Aug 18, 2026 | Leslie Trigg | Chair and CEO | Sale | 3.4K | $4.39 | $15.1K | SEC ↗ |
| Aug 18, 2026 | John L. Brottem | General Counsel | Sale | 2.6K | $4.39 | $11.6K | SEC ↗ |
| Aug 18, 2026 | Renee Gaeta | Chief Financial Officer | Sale | 4.5K | $4.39 | $19.9K | SEC ↗ |
| Jun 5, 2026 | Renee Gaeta | Chief Financial Officer | Sale | 17.7K | $4.94 | $87.3K | SEC ↗ |
| May 20, 2026 | Leslie Trigg | Chair and CEO | Sale | 3.4K | $3.70 | $12.7K | SEC ↗ |
| May 20, 2026 | Marc Nash | EVP Operations R&D & Service | Sale | 1.6K | $3.70 | $5.9K | SEC ↗ |
| May 20, 2026 | John L. Brottem | General Counsel | Sale | 2.6K | $3.70 | $9.8K | SEC ↗ |
| Feb 20, 2026 | John L. Brottem | General Counsel | Sale | 2.8K | $3.35 | $9.5K | SEC ↗ |
| Feb 20, 2026 | Leslie Trigg | Chair and CEO | Sale | 3.4K | $3.35 | $11.3K | SEC ↗ |
| Feb 20, 2026 | Marc Nash | EVP Operations R&D & Service | Sale | 1.8K | $3.35 | $6.1K | SEC ↗ |
| Jan 22, 2026 | Marc Nash | EVP Operations R&D & Service | Sale | 6.4K | $5.10 | $32.4K | SEC ↗ |
| Jan 22, 2026 | John L. Brottem | General Counsel | Sale | 10.5K | $5.11 | $53.6K | SEC ↗ |
| Jan 21, 2026 | Leslie Trigg | Chair and CEO | Sale | 13.9K | $5.11 | $71.1K | SEC ↗ |
| Jan 8, 2026 | Marc Nash | EVP Operations R&D & Service | Sale | 108 | $4.27 | $461.16 | SEC ↗ |
| Jan 8, 2026 | John L. Brottem | General Counsel | Sale | 224 | $4.27 | $956.48 | SEC ↗ |
| Jan 8, 2026 | Leslie Trigg | Chair and CEO | Sale | 1.8K | $4.27 | $7.7K | SEC ↗ |
| Dec 2, 2025 | Karen Drexler | Director | Sale | 1.5K | $4.37 | $6.8K | SEC ↗ |
| Nov 18, 2025 | Leslie Trigg | Chair and CEO | Sale | 916 | $4.60 | $4.2K | SEC ↗ |
| Nov 18, 2025 | Marc Nash | EVP Operations R&D & Service | Sale | 247 | $4.60 | $1.1K | SEC ↗ |
| Nov 18, 2025 | John L. Brottem | General Counsel | Sale | 388 | $4.60 | $1.8K | SEC ↗ |
| Aug 18, 2025 | Leslie Trigg | Chair and CEO | Sale | 904 | $12.88 | $11.6K | SEC ↗ |
| Aug 18, 2025 | Marc Nash | SVP Operations and R&D | Sale | 243 | $12.88 | $3.1K | SEC ↗ |
| Aug 18, 2025 | John L. Brottem | General Counsel | Sale | 383 | $12.88 | $4.9K | SEC ↗ |
| May 16, 2025 | Leslie Trigg | Chair and CEO | Sale | 935 | $17.80 | $16.6K | SEC ↗ |
Showing the 25 most recent of 251 Form 4 filings for Outset Medical, Inc..
Most active OM insiders
- John L. Brottem54 filings
- Leslie Trigg52 filings
- Nabeel Ahmed33 filings
- Martin Vazquez29 filings
- Marc Nash19 filings
Ask anything about OM insider activity
Use Trabud's AI agent to query Outset Medical, Inc.'s Form 4 history in plain English — "Show me OM CEO purchases this year" or compare it against any other ticker.
Open the AI agentOM insider trading FAQ
Are Outset Medical, Inc. insiders buying or selling?
In the last 12 months, Outset Medical, Inc. insiders reported 1 open-market purchase ($870.3K) and 20 sales ($369.2K) — net buying of $501.1K. Since September 2020, Trabud has recorded 251 Form 4 filings for OM: 7 buys ($2.0M) and 244 sells ($870.0M). Over the full record that is net selling of $868.0M.
How many insiders trade OM stock?
16 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Outset Medical, Inc.. The most recent filing was accepted on Oct 5, 2026.
Where does Trabud get OM insider trading data?
All OM insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.