Updated Jul 16, 2026 · Last SEC filing 2026-07-08
Ouster, Inc. (OUST) has filed 27 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-08. 4 Form 8-K material event filings were reported by OUST in the last 90 days. 16 Form 144 notices of proposed sale were filed for OUST stock. InsiderAlpha tracks every OUST SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | General Industrial Machinery & Equipment, NEC (SIC 3569) |
|---|---|
| SEC CIK | 0001816581 |
| Form 4 filings (90d) | 27 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 16 |
| Latest Form 4 filing | 2026-07-08 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Heystee Susan | Insider | A — Grant or award | 660 | $49.83 | $33K | SEC | |
| Tewksbury Ted L III | Insider | S — Open-market sale | 1.7K | $47.00 | $80K | SEC | |
| Tewksbury Ted L III | Insider | A — Grant or award | 4.7K | $0.00 | — | SEC | |
| Eyler Phillip | Insider | A — Grant or award | 4.7K | $0.00 | — | SEC | |
| MADDOCK ERNEST E | Insider | A — Grant or award | 4.7K | $0.00 | — | SEC | |
| SKAGGS STEPHEN A | Insider | A — Grant or award | 4.7K | $0.00 | — | SEC | |
| Heystee Susan | Insider | A — Grant or award | 4.7K | $0.00 | — | SEC | |
| Correia Christina | Insider | A — Grant or award | 4.7K | $0.00 | — | SEC | |
| Gianella Kenneth P. | Chief Financial Officer | S — Open-market sale | 54.3K | $38.82 | $2.11M | SEC | |
| Jacquemet Cyrille | Chief Revenue Officer | S — Open-market sale | 8.7K | $38.82 | $339K | SEC | |
| SPENCER DARIEN | Chief Operating Officer | S — Open-market sale | 12.6K | $38.82 | $488K | SEC | |
| Chung Megan | General Counsel and Secretary | S — Open-market sale | 11.3K | $38.82 | $437K | SEC | |
| Pacala Charles Angus | President and CEO | S — Open-market sale | 29.8K | $38.82 | $1.16M | SEC | |
| Frichtl Mark | Chief Technology Officer | S — Open-market sale | 18.4K | $38.82 | $715K | SEC | |
| Frichtl Mark | Chief Technology Officer | S — Open-market sale | 76.6K | $39.94 | $3.06M | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Ouster, Inc. (OUST). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Frichtl Mark | 48 | $29.54M |
| Heystee Susan | 3 | $357K |
| SKAGGS STEPHEN A | 3 | $290K |
| Jacquemet Cyrille | 3 | $1.07M |
| SPENCER DARIEN | 2 | $1.84M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in OUST insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
Open the live OUST dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.