Mark Frichtl is CTO at Ouster, Inc. (OUST). They have made 4 open-market trades across 1 company since 2023, most recently 2026-09-14.
CIK 0001847596
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
3 open-market purchases totalling $298K since 2023, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| OUST | 318,987 | $9.1M |
Shares reported on the most recent Form 4, priced at the 2026-09-16 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| OUST | SELL · 10b5-1 | 2026-09-14 | 2026-09-16 | $33.96 | $638K | +14.9% | -20.2% | — |
| OUST | SELL · 10b5-1 | 2026-06-12 | 2026-06-16 | $38.82 | $715K | +25.4% | -18.6% | -22.6% |
| OUST | SELL · 10b5-1 | 2026-05-22 | 2026-05-27 | $40.60 | $15.6M | -4.4% | -1.8% | -15.3% |
| OUST | SELL · 10b5-1 | 2026-05-13 | 2026-05-15 | $33.18 | $6.0M | +24.2% | +32.5% | +32.3% |
| OUST | SELL · 10b5-1 | 2026-05-04 | 2026-05-06 | $30.08 | $1.0M | +9.2% | +40.8% | +69.7% |
| OUST | SELL · 10b5-1 | 2026-04-22 | 2026-04-23 | $30.00 | $12K | +4.3% | +55.3% | +41.4% |
| OUST | SELL · 10b5-1 | 2026-04-20 | 2026-04-21 | $27.57 | $3.3M | -7.7% | +22.2% | +21.1% |
| OUST | SELL · 10b5-1 | 2026-04-17 | 2026-04-17 | $25.15 | $754K | +2.7% | +23.7% | +41.2% |
| OUST | SELL · 10b5-1 | 2026-04-14 | 2026-04-15 | $23.17 | $1.4M | +9.0% | +41.1% | +70.0% |
| OUST | SELL · 10b5-1 | 2026-03-25 | 2026-03-27 | $20.94 | $1.7M | +12.7% | +51.5% | +135.3% |
| OUST | SELL | 2026-03-12 | 2026-03-16 | $23.43 | $368K | -9.8% | +14.2% | +111.1% |
| OUST | SELL · 10b5-1 | 2025-12-12 | 2025-12-16 | $24.98 | $782K | -5.0% | +21.8% | -5.3% |
| OUST | SELL · 10b5-1 | 2025-09-12 | 2025-09-16 | $28.46 | $1.4M | -4.1% | +8.7% | -23.9% |
| OUST | BUY | 2024-12-12 | 2024-12-16 | $9.78 | $49K | +25.3% | +14.6% | -14.6% |
| OUST | BUY | 2024-05-15 | 2024-05-16 | $12.34 | $99K | -5.9% | -15.8% | -39.3% |
| OUST | BUY | 2023-05-16 | 2023-05-18 | $5.84 | $150K | +16.0% | -4.9% | +8.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.