Joshua Buettner-Garrett is CTO at Solid Power, Inc. (SLDP). They have made 1 open-market trade across 1 company since 2023, most recently 2026-09-30.
CIK 0001880162
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 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SLDP | 1,332,194 | $2.7M |
Shares reported on the most recent Form 4, priced at the 2026-10-01 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SLDP | SELL · 10b5-1 | 2025-03-06 | 2025-03-07 | $1.13 | $424K | -1.8% | -17.2% | +26.8% |
| SLDP | SELL · 10b5-1 | 2025-02-10 | 2025-02-12 | $1.31 | $246K | -11.8% | -16.9% | +5.1% |
| SLDP | SELL · 10b5-1 | 2025-01-06 | 2025-01-07 | $2.09 | $392K | -19.9% | -27.4% | -50.2% |
| SLDP | SELL · 10b5-1 | 2024-12-16 | 2024-12-17 | $1.07 | $201K | +92.8% | +46.8% | +3.6% |
| SLDP | SELL · 10b5-1 | 2024-11-12 | 2024-11-13 | $1.07 | $201K | +1.8% | -4.4% | +14.9% |
| SLDP | SELL · 10b5-1 | 2024-10-07 | 2024-10-08 | $1.26 | $236K | +1.6% | -5.6% | +60.8% |
| SLDP | SELL · 10b5-1 | 2024-09-10 | 2024-09-11 | $1.21 | $227K | +3.0% | -2.3% | -12.1% |
| SLDP | SELL · 10b5-1 | 2024-08-19 | 2024-08-20 | $1.42 | $266K | -2.1% | -8.9% | -30.1% |
| SLDP | SELL · 10b5-1 | 2024-07-09 | 2024-07-10 | $1.66 | $311K | +11.2% | -28.3% | -33.7% |
| SLDP | SELL · 10b5-1 | 2024-06-14 | 2024-06-17 | $1.66 | $311K | -1.2% | +31.7% | -21.0% |
| SLDP | SELL · 10b5-1 | 2024-05-21 | 2024-05-22 | $1.68 | $315K | -2.3% | -11.0% | -16.2% |
| SLDP | SELL | 2024-04-03 | 2024-04-04 | $1.86 | $349K | -13.5% | +3.2% | -7.0% |
| SLDP | SELL · 10b5-1 | 2024-03-18 | 2024-03-19 | $1.36 | $510K | +45.6% | +16.2% | +22.8% |
| SLDP | SELL · 10b5-1 | 2024-02-07 | 2024-02-08 | $1.58 | $296K | -1.9% | -9.3% | +8.1% |
| SLDP | SELL · 10b5-1 | 2024-01-11 | 2024-01-12 | $1.29 | $242K | +9.8% | +38.3% | +35.2% |
| SLDP | SELL · 10b5-1 | 2023-12-05 | 2023-12-06 | $1.47 | $276K | -11.2% | -7.0% | +4.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.