Form 4: Standard BioTools Officer Sells Shares for Tax

Standard BioTools' SVP & Chief Business Officer, Sean Mackay, disposed of 19,661 shares of common stock to cover tax obligations related to RSU vesting.

Summary

• Sean Mackay, SVP & Chief Business Officer of Standard BioTools Inc. (LAB), reported a transaction on November 20, 2025.
• The transaction involved the disposition of 19,661 shares of Standard BioTools common stock.
• These shares were withheld by the company to satisfy tax withholding obligations that arose upon the vesting of restricted stock units (RSUs).
• The RSUs were granted to Mr. Mackay on May 20, 2024, and March 21, 2025.
• The shares were disposed of at a price of $1.28 per share.
• Following this transaction, Sean Mackay directly beneficially owns 779,835 shares of Standard BioTools Inc. common stock.

Sentiment

Score: 5

Explanation: The filing reports a routine tax withholding transaction related to RSU vesting, which is a common occurrence for executives and does not inherently indicate positive or negative sentiment about the company's performance or outlook.

Industry Context

This filing represents a routine insider transaction common across all industries where executives receive equity compensation. The disposition of shares for tax withholding purposes upon RSU vesting is a standard practice and does not typically reflect a change in the company's strategic direction or financial health.

Stakeholder Impact

• Shareholders: Minimal impact, as this is a routine tax-related transaction and not a discretionary sale by an insider, which typically has little bearing on the company's operational or financial performance.

Key Dates

Keywords

Standard BioTools, LAB, Sean Mackay, Insider Transaction, Form 4, Stock Sale, Tax Withholding, Restricted Stock Units, RSU Vesting