🕵️ Ouster, Inc. ($OUST)
SEC insider & ownership activity, last 12 months · CIK 1816581 · every row links its SEC filing
Over the last 12 months insiders sold $44.8M against $178K of open-market buying. Frichtl Mark sold $31.1M through a 10b5-1 trading plan in 32 lots (Sep–Jun). 4 planned sales are pending, the largest $4.1M (Mark Frichtl). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $178K (3 lots) · 9 sellers, $44.8M (61 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Frichtl Mark | 0 | – | 32 | $31.1M | Jun 12, 2026 |
| Pacala Charles Angus | 0 | – | 4 | $3.4M | Jun 12, 2026 |
| Spencer Darien | 0 | – | 5 | $2.9M | Jun 12, 2026 |
| Kenneth P. Gianella | 0 | – | 1 | $2.1M | Jun 12, 2026 |
| Chung Megan | 0 | – | 7 | $1.9M | Jun 12, 2026 |
| Heystee Susan | 0 | – | 3 | $1.8M | May 21, 2026 |
| Jacquemet Cyrille | 0 | – | 3 | $1.1M | Jun 12, 2026 |
| Stephen A. Skaggs | 0 | – | 2 | $290K | May 5, 2026 |
| Theodore Tewksbury III | 0 | – | 4 | $193K | Jun 22, 2026 |
| Boulet Virginia | 3 | $178K | 0 | – | May 11, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 8.5% | 13G | Jul 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Theodore Tewksbury III | $80K | Jun 22, 2026 | filing ↗ |
| Mark Frichtl | $10.0M | May 26, 2026 | filing ↗ |
| Darien R Spencer | $1.4M | May 26, 2026 | filing ↗ |
| Cyrille Jacquemet | $377K | May 26, 2026 | filing ↗ |
| Mark Frichtl | $4.1M | May 22, 2026 | filing ↗ |
| Susan Heystee | $324K | May 21, 2026 | filing ↗ |
| Mark Frichtl | $150K | May 15, 2026 | filing ↗ |
| Cyrille Jacquemet | $350K | May 14, 2026 | filing ↗ |
| Mark Frichtl | $1.4M | May 14, 2026 | filing ↗ |
| Mark Frichtl | $3.7M | May 13, 2026 | filing ↗ |
| Stephen Skaggs | $150K | May 5, 2026 | filing ↗ |
| Mark Frichtl | $915K | May 4, 2026 | filing ↗ |
| Mark Frichtl | $11K | Apr 22, 2026 | filing ↗ |
| Mark Frichtl | $1.6M | Apr 21, 2026 | filing ↗ |
| Stephen Skaggs | $140K | Apr 21, 2026 | filing ↗ |
| Mark Frichtl | $1.5M | Apr 20, 2026 | filing ↗ |
| Mark Frichtl | $725K | Apr 17, 2026 | filing ↗ |
| Megan Chung | $144K | Apr 16, 2026 | filing ↗ |
| Mark Frichtl | $468K | Apr 15, 2026 | filing ↗ |
| Mark Frichtl | $875K | Apr 14, 2026 | filing ↗ |
| Mark Frichtl | $823K | Mar 25, 2026 | filing ↗ |
| Theodore Tewksbury Ph D | $34K | Mar 19, 2026 | filing ↗ |
| Mark Frichtl | $368K | Mar 12, 2026 | filing ↗ |
| Charles Angus Pacala | $579K | Mar 12, 2026 | filing ↗ |
| Megan Chung | $225K | Mar 12, 2026 | filing ↗ |
| Darien Spencer | $257K | Mar 12, 2026 | filing ↗ |
| Megan Chung | $159K | Jan 16, 2026 | filing ↗ |
| Theodore Tewksbury Ph D | $36K | Dec 19, 2025 | filing ↗ |
| Susan Heystee | $292K | Dec 12, 2025 | filing ↗ |
| Darien Spencer | $308K | Dec 12, 2025 | filing ↗ |
| Charles Angus Pacala | $694K | Dec 12, 2025 | filing ↗ |
| Mark Frichtl | $442K | Dec 12, 2025 | filing ↗ |
| Megan Chung | $302K | Dec 12, 2025 | filing ↗ |
| Theodore Tewksbury | $43K | Nov 11, 2025 | filing ↗ |
| Megan Chung | $181K | Oct 17, 2025 | filing ↗ |
| Darien Spencer | $546K | Sep 12, 2025 | filing ↗ |
| Charles Angus Pacala | $1.1M | Sep 12, 2025 | filing ↗ |
| Mark Frichtl | $760K | Sep 12, 2025 | filing ↗ |
| Megan Chung | $513K | Sep 12, 2025 | filing ↗ |
| Susan Heystee | $1.2M | Aug 13, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Other events (8.01) | Jul 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 2, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jun 17, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 17, 2026 | filing ↗ |
| Other events (8.01) | May 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 8, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Earnings (2.02) | Mar 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 2, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 9, 2026 | filing ↗ |
| Material agreement (1.01) | Dec 17, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 17, 2025 | filing ↗ |
| Officer/director changes (5.02) | Dec 8, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |
| Earnings (2.02) | Aug 7, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 7, 2025 | filing ↗ |