Updated Jul 16, 2026
Buettner-Garrett Joshua has filed 3 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $640K.
Joshua Buettner-Garrett is the Chief Technology Officer at Solid Power, Inc., a company specializing in solid-state battery technology. He has been involved in the development of sulfide-based solid electrolyte materials for battery applications.
| Role | Chief Technology Officer |
|---|---|
| Notability | 30/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-01 | SLDP | Solid Power, Inc. | F — Tax withholding / forfeiture | 33.8K | $2.60 | $88K |
| 2026-05-13 | SLDP | Solid Power, Inc. | F — Tax withholding / forfeiture | 5.5K | $3.15 | $17K |
| 2026-05-12 | SLDP | Solid Power, Inc. | F — Tax withholding / forfeiture | 58.1K | $3.08 | $179K |
| 2026-04-02 | SLDP | Solid Power, Inc. | A — Grant or award | 183.5K | $0.00 | |
| 2026-04-02 | SLDP | Solid Power, Inc. | F — Tax withholding / forfeiture | 14.3K | $2.82 | $40K |
| 2025-09-30 | SLDP | Solid Power, Inc. | F — Tax withholding / forfeiture | 14.3K | $3.52 | $50K |
| 2025-06-30 | SLDP | Solid Power, Inc. | F — Tax withholding / forfeiture | 14.3K | $2.15 | $31K |
| 2024-12-17 | SLDP | Solid Power, Inc. | S — Open-market sale [10b5-1] | 187.5K | $1.07 | $201K |
| 2024-12-17 | SLDP | Solid Power, Inc. | M — Option exercise [10b5-1] | 187.5K | $0.03 | $6K |
| 2024-11-13 | SLDP | Solid Power, Inc. | S — Open-market sale [10b5-1] | 187.5K | $1.07 | $201K |
| 2024-11-13 | SLDP | Solid Power, Inc. | M — Option exercise [10b5-1] | 187.5K | $0.03 | $6K |
| 2024-10-08 | SLDP | Solid Power, Inc. | S — Open-market sale [10b5-1] | 187.5K | $1.26 | $237K |
| 2024-10-08 | SLDP | Solid Power, Inc. | M — Option exercise [10b5-1] | 187.5K | $0.03 | $6K |
| 2024-10-01 | SLDP | Solid Power, Inc. | F — Tax withholding / forfeiture | 4.4K | $1.37 | $6K |
Joshua Buettner-Garrett is the Chief Technology Officer at Solid Power, Inc., a company specializing in solid-state battery technology. He has been involved in the development of sulfide-based solid electrolyte materials for battery applications.…
3 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 3 open-market sales ($640K) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Buettner-Garrett Joshua profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.