Kim Hanjoon Alex 4

What Happened

• Kim Hanjoon Alex, Chief Financial Officer of Standard BioTools (LAB), had 18,871 shares withheld on May 20, 2026 to satisfy tax withholding obligations arising from the vesting of restricted stock units. The shares were valued and disposed at $1.00 each for a total of $18,871. This is a tax-withholding disposition (code F), not an open-market sale or a purchase.

Key Details

• Transaction date and price: May 20, 2026 — 18,871 shares at $1.00 per share (total $18,871).
• Transaction type: F (shares withheld to pay tax withholding obligations on vested RSUs).
• Shares owned after transaction: Not specified in the provided filing excerpt.
• Footnote: The shares were withheld to satisfy taxes on RSUs that vested from grants dated May 20, 2024; March 21, 2025; and March 20, 2026 (previously reported on Form 4s filed May 21, 2024; March 24, 2025; and April 8, 2026).
• Filing timeliness: Report filed May 22, 2026 for a May 20, 2026 transaction — appears to be timely (not marked late).

Context

• This was a routine “sell-to-cover” style withholding to satisfy tax obligations upon RSU vesting, which is common and generally not a direct signal of the insider’s view on the stock. The SEC transaction code F denotes payment of tax liabilities or exercise price via withholding of shares.