Buettner-Garrett Joshua 4

What Happened

• Joshua Buettner-Garrett, Chief Technology Officer of Solid Power (SLDP), had 58,082 shares of common stock withheld to satisfy tax obligations upon the vesting of restricted stock units (RSUs). The withholding was recorded at $3.08 per share, equal to approximately $178,602. This was a tax-withholding disposition (not an open-market sale or purchase).

Key Details

• Transaction date: 2026-05-11; Filing date: 2026-05-12 (timely)
• Price per share: $3.08; Shares withheld: 58,082; Total value: ~$178,602
• Transaction code/footnote: F — shares withheld to satisfy tax obligation on RSU vesting (footnote F1)
• Shares owned after transaction: not specified in this Form 4
• This is a routine tax withholding (cashless settlement), not a purchase or market sale

Context

• Withholding shares to cover taxes is a common practice when RSUs vest and does not necessarily signal insider sentiment about the stock. It reduces the insider's reported share count but is driven by tax liability rather than investment decision.