Form 4 for LAB STANDARD BIOTOOLS INC.

Accepted 2025-05-23 00:00:00 ET · period of report 2025-05-21 · accession 0000950170-25-077191 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
M	2025-05-23	2025-05-21+	LAB	Mackay Sean	SVP, Chief Business Off	S - Sale	$1.02	-25.4K	868.8K	-3%	-$25.8K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2025-05-22	S	D	12,536	$1.00	856,293	D	—	—	(F1) The shares were sold to satisfy the tax obligations that arose upon the vesting of restricted stock units granted to the reporting person on March 21, 2025, which grant was originally reported on Form 4 filed with the U.S. Securities and Exchange Commission ("SEC") on March 24, 2025. (F3) Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9403 to $1.03 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the SEC, the Issuer, or a security holder of the Issuer.
2	Common	Common Stock	2025-05-21	S	D	12,838	$1.03	868,829	D	—	—	(F1) The shares were sold to satisfy the tax obligations that arose upon the vesting of restricted stock units granted to the reporting person on March 21, 2025, which grant was originally reported on Form 4 filed with the U.S. Securities and Exchange Commission ("SEC") on March 24, 2025. (F2) Represents the weighted average sales price per share. The shares sold at prices ranging from $1.015 to $1.05 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the SEC, the Issuer, or a security holder of the Issuer.