Sean Mackay

CIK: 0001875501

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (25.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (25.0%)

Compensation grants

Other (G, F, J, C, D, …)6 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

LAB

STANDARD BIOTOOLS INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (12 total)

LAB
STANDARD BIOTOOLS INC.
Aug 20, 2026
Tax Payment(F)
Direct
25.7K shares at avg. $0.67$17K
LAB
STANDARD BIOTOOLS INC.
Jun 20, 2026
Award(A)
Direct
500K shares-
LAB
STANDARD BIOTOOLS INC.
May 20, 2026
Tax Payment(F)
Direct
25.7K shares at avg. $1.00$26K
LAB
STANDARD BIOTOOLS INC.
Mar 20, 2026
Award(A)
Direct
272.1K shares-
LAB
STANDARD BIOTOOLS INC.
Feb 23, 2026
Tax Payment(F)
Direct
19.7K shares at avg. $1.15$23K
LAB
STANDARD BIOTOOLS INC.
Nov 20, 2025
Tax Payment(F)
Direct
19.7K shares at avg. $1.28$25K
LAB
STANDARD BIOTOOLS INC.
Aug 20, 2025
Tax Payment(F)
Direct
19.7K shares at avg. $1.27$25K
LAB
STANDARD BIOTOOLS INC.
May 28, 2025
Tax Payment(F)
Direct
23.9K shares at avg. $1.09$26K
LAB
STANDARD BIOTOOLS INC.
May 23, 2025
Sale(S)
Direct
13.2K shares at avg. $0.94$12K
LAB
STANDARD BIOTOOLS INC.
May 22, 2025
Sale(S)
Direct
12.5K shares at avg. $1.00$13K
LAB
STANDARD BIOTOOLS INC.
May 21, 2025
Sale(S)
Direct
12.8K shares at avg. $1.03$13K
LAB
STANDARD BIOTOOLS INC.
Mar 21, 2025
Award(A)
Direct
281.7K shares-

		Type	Shares	Price		Ownership
Aug 20, 2026	LAB STANDARD BIOTOOLS INC.	Tax Payment(F)	25,729	$0.67	$17,290	Direct
Jun 20, 2026	LAB STANDARD BIOTOOLS INC.	Award(A)	500,000	-	$0	Direct
May 20, 2026	LAB STANDARD BIOTOOLS INC.	Tax Payment(F)	25,729	$1.00	$25,729	Direct
Mar 20, 2026	LAB STANDARD BIOTOOLS INC.	Award(A)	272,107	-	$0	Direct
Feb 23, 2026	LAB STANDARD BIOTOOLS INC.	Tax Payment(F)	19,661	$1.15	$22,610	Direct
Nov 20, 2025	LAB STANDARD BIOTOOLS INC.	Tax Payment(F)	19,661	$1.28	$25,166	Direct
Aug 20, 2025	LAB STANDARD BIOTOOLS INC.	Tax Payment(F)	19,661	$1.27	$24,969	Direct
May 28, 2025	LAB STANDARD BIOTOOLS INC.	Tax Payment(F)	23,919	$1.09	$26,072	Direct
May 23, 2025	LAB STANDARD BIOTOOLS INC.	Sale(S)	13,217	$0.94	$12,437	Direct
May 22, 2025	LAB STANDARD BIOTOOLS INC.	Sale(S)	12,536	$1.00	$12,561	Direct
May 21, 2025	LAB STANDARD BIOTOOLS INC.	Sale(S)	12,838	$1.03	$13,223	Direct
Mar 21, 2025	LAB STANDARD BIOTOOLS INC.	Award(A)	281,667	-	-	Direct

1-12 of 12 transactions

About Mackay Sean

Mackay Sean (SEC CIK 0001875501) files insider reports with the SEC as SVP & Chief Business Officer of STANDARD BIOTOOLS INC. (LAB).

Signal8 holds 12 ownership filings by Mackay Sean (1 Form 3, 11 Form 4), filed between Sep 3, 2024 and Aug 24, 2026. Those filings report 12 transactions, from Mar 21, 2025 to Aug 20, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Mackay Sean's filings is in BOSTON, MA.

Recent filings by Mackay Sean

Aug 20, 2026: Tax withholding of LAB shares (Form 4, code F).
Jun 20, 2026: Grant or award of LAB shares (Form 4, code A).
May 20, 2026: Tax withholding of LAB shares (Form 4, code F).
Mar 20, 2026: Grant or award of LAB shares (Form 4, code A).
Feb 23, 2026: Tax withholding of LAB shares (Form 4, code F).

Other insiders filing for STANDARD BIOTOOLS INC. (LAB)

Kim Hanjoon Alex, Chief Financial Officer
Egholm Michael, President & CEO
Carey Thomas D., Director
Witney Frank, Director
Casdin Eli, Director
Cox Troy, Director

How to read Form 4 transaction codes