Buettner-Garrett Joshua 4

What Happened
Joshua Buettner-Garrett, Chief Technology Officer of Solid Power (SLDP), had 5,519 shares of common stock withheld to satisfy tax obligations upon the vesting of restricted stock units. The withholding was executed at $3.15 per share, equal to approximately $17,385 in value. This transaction is a tax-withholding disposition (code F), not an open-market sale.

Key Details

• Transaction date: 2026-05-12; Filing date: 2026-05-13 (appears timely).
• Shares withheld/disposed: 5,519 shares at $3.15 per share; total value ≈ $17,385.
• Transaction code: F — shares withheld to satisfy tax obligations on RSU vesting (see footnote F1).
• Shares owned after the transaction: not disclosed in the provided filing excerpt.
• No indication this was part of a 10b5-1 plan or an open-market sale.

Context
Tax-withholding dispositions are routine when restricted stock units vest: the company retains (withholds) shares to pay the insider’s tax bill. Because shares were withheld rather than sold on the market, this action generally does not signal the insider’s sentiment about the company’s stock price.