Sean Mackay - 23 Feb 2026 Form 4 Insider Report for STANDARD BIOTOOLS INC. (LAB)

Role
SVP & Chief Business Officer
Signature
/s/ Sean Mackay by Tomone Tanaka, Attorney-in-Fact
Issuer symbol
LAB
Transactions as of
23 Feb 2026
Net transactions value
-$22,610
Form type
4
Filing time
24 Feb 2026, 17:44:23 UTC
Previous filing
24 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Mackay Sean SVP & Chief Business Officer C/O STANDARD BIOTOOLS INC., 50 MILK STREET, 10TH FLOOR, BOSTON /s/ Sean Mackay by Tomone Tanaka, Attorney-in-Fact 24 Feb 2026 0001875501

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction LAB Common Stock Tax liability $22,610 -19,661 -2.5% $1.15 760,174 23 Feb 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The shares were withheld from the reporting person to satisfy the tax withholding obligations that arose upon the vesting of restricted stock units granted to the reporting person on May 20, 2024 and March 21, 2025, which grants were originally reported on Form 3 and Form 4 filed with the U.S. Securities and Exchange Commission on September 3, 2024 and March 24, 2025, respectively.