Egholm Michael 4

What Happened

• Michael Egholm, President & CEO and a director of Standard BioTools (LAB), had 97,626 shares withheld to satisfy tax withholding obligations tied to vested restricted stock units (RSUs). The withheld shares were recorded at $1.00 per share, for a total value of $97,626. This was a withholding for taxes (not an open-market sale).

Key Details

• Transaction date and price: 2026-05-20 at $1.00 per share (total $97,626).
• Shares disposed/withheld: 97,626 shares (code F — tax withholding).
• Shares owned after transaction: Not specified in the provided filing details.
• Footnote: Shares were withheld to satisfy tax obligations arising from RSUs granted on 5/20/2024, 3/21/2025 and 3/20/2026 (original grants reported on Form 4s filed 5/21/2024, 3/24/2025 and 4/8/2026).
• Filing timeliness: Report filed 2026-05-22 for a 2026-05-20 transaction (appears timely).

Context

• This is a routine tax-withholding event upon RSU vesting (cashless/retention of shares to cover taxes), not an indication of an open-market sale or change in investment stance. Such withholdings are common when equity awards vest and generally reflect tax requirements rather than trading intent.