Last Andrew J. 4

What Happened
Andrew J. Last, a director of Insight Molecular Diagnostics, reported a disposition on July 1, 2026 in which 7,700 shares were withheld by the issuer to satisfy tax withholding obligations. The shares were valued at $5.69 each for a total of $43,813. Per the filing footnote, this withholding covered taxes on the vesting of 35,000 restricted stock units (RSUs) granted July 1, 2025; the reporting person did not sell any shares in the open market.

Key Details

• Transaction date: 2026-07-01; per-share value used: $5.69; total value: $43,813.
• Nature of transaction: Shares withheld by the company for tax withholding on vested RSUs (transaction code F). Not an open-market sale.
• Underlying award: Withholding related to vesting of 35,000 RSUs granted July 1, 2025 (footnote).
• Shares owned after the transaction: Not specified in the provided filing data.
• Filing date: Form 4 filed 2026-07-06 (filed five days after the reported transaction). Form 4s are generally due within two business days of the transaction, so this filing appears later than the standard reporting window.

Context
A share withholding for taxes is routine when RSUs vest and does not indicate an active sale or a change in sentiment by the insider. For investors, purchases or open-market sales typically carry more informational weight; tax-withholding dispositions simply reflect tax obligations and reduce the net number of shares received on vesting.