Dietmar Ostermann is Director at Xos, Inc. (XOS). They have made 2 open-market trades across 1 company since 2025, most recently 2026-08-20.
CIK 0001179705
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.
0 open-market purchases, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| XOS | 115,226 | $326K |
| SOLO | 233,173 | $49K |
| Total | $376K |
Shares reported on the most recent Form 4, priced at the 2026-08-27 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 |
|---|---|---|---|---|---|---|---|---|
| XOS | SELL | 2026-08-20 | 2026-08-24 | $3.49 | $35K | -15.0% | -26.9% | — |
| XOS | SELL · 10b5-1 | 2026-07-15 | 2026-08-27 | $2.20 | $27K | -19.7% | -24.9% | — |
| XOS | SELL · 10b5-1 | 2026-07-10 | 2026-08-27 | $2.41 | $30K | -19.7% | -24.9% | — |
| XOS | SELL | 2026-06-08 | 2026-06-10 | $4.45 | $15K | -10.5% | -30.7% | -19.9% |
| XOS | SELL · 10b5-1 | 2025-12-18 | 2025-12-22 | $2.08 | $24K | -6.3% | +5.4% | -5.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.