Standard Biotools LAB Insider Ownership

NASDAQ LAB

$0.72 +0.02 (+3.60%)

As of: Sep 9, 2026 · 1:40 PM EDT

Insider Holdings by Owner

226.94Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

0.106%

■0% pp QoQ

Shares Held by Insiders

405.02K

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

382.63Mn

382,630,000 shares

Direct Holdings

200.94K

Indirect: 204.08K

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Quarter ending 30 Sep, 2026

LAB's three largest insider shareholders as of September 09, 2026 are Partners Master Fund, L.P. Casdin (Director, 134.15Mn shares), Partners Master Fund, L.P. Casdin (Director, 59.75Mn shares), Partners Master Fund, L.P. Casdin (Director, 53.78Mn shares).

Standard Biotools's equity is distributed as 64.03% to institutions, 10.36% to company executives, and 25.61% to other and public holders.
Business Quant data shows insider ownership in Standard Biotools at 10.36% of outstanding equity, or 405.01K shares out of 390.88Mn total.
Standard Biotools's count of insider shares amounted to 405.01K as of September 09, 2026.
Among Standard Biotools's insiders, Sean Mackay (Svp Chief Business Officer) was the top buyer with 500.00K shares acquired between June 11, 2026 and September 09, 2026.
Conversely, Michael Egholm (President Ceo) was LAB's largest seller, parting with 460.25K shares between June 11, 2026 and September 09, 2026.

Form 4 Holdings

Insiders Holding LAB

Insiders 24

Shares held 226.94Mn

Of outstanding 59.31%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Partners Master Fund, L.P. Casdin	Director, TenPercentOwner	0	193,900,000	193,900,000	85.4%	04 Dec, 2025
2	Partners Lp Caligan	TenPercentOwner	0	16,265,374	16,265,374	7.2%	03 Jul, 2023
3	Michael Egholm	President Ceo	6,137,704	0	6,137,704	2.7%	24 Aug, 2026
4	Eli Casdin	Director, TenPercentOwner	2,954,053	0	2,954,053	1.3%	02 Mar, 2026
5	Hanjoon Alex Kim	Chief Financial Officer	2,534,859	0	2,534,859	1.1%	24 Aug, 2026
6	Sean Mackay	Svp Chief Business Officer	1,480,823	0	1,480,823	0.7%	24 Aug, 2026
7	Troy Cox	Director	475,702	0	475,702	0.2%	23 Jun, 2026
8	Jeffrey G. Black	Svp Chief Financial Officer	421,608	0	421,608	0.2%	05 Sep, 2024
9	Thomas D. Carey	Director	344,456	0	344,456	0.2%	23 Jun, 2026
10	Fenel M Eloi	Director	335,299	0	335,299	0.1%	23 Jun, 2026
11	Stephen Christopher Linthwaite	President Ceo	328,473	0	328,473	0.1%	24 Feb, 2022
12	Frank Witney	Director	309,978	0	309,978	0.1%	23 Jun, 2026
13	Kathy L Hibbs	Director	236,836	0	236,836	0.1%	23 Jun, 2026
14	Vikram Jog	Chief Financial Officer	217,622	0	217,622	0.1%	23 Feb, 2023
15	Nicolas Barthelemy	Director	0	204,077	204,077	0.1%	04 Apr, 2022
16	Carlos V Paya	Director	126,844	0	126,844	0.1%	16 Jun, 2023
17	Bradley Allen Kreger	Svp, Global Operations	119,157	0	119,157	0.1%	23 May, 2022
18	Laura Clague	Director	104,791	0	104,791	0.0%	16 Jun, 2023
19	Martin D Madaus	Director	104,111	0	104,111	0.0%	20 Oct, 2023
20	Nicholas Khadder	Svp, Gen. Counsel Secretary	100,480	0	100,480	0.0%	03 Jun, 2022
21	Gerhard F Burbach	Director	96,827	0	96,827	0.0%	17 Jun, 2022
22	Colin Mccracken	Chief Commercial Officer	65,103	0	65,103	0.0%	24 Feb, 2022
23	Bill Colston	Director	59,288	0	59,288	0.0%	17 Jun, 2022
24	Jeremy Steven Davis	Svp Chief Commercial Officer	14,657	0	14,657	0.0%	23 Feb, 2023

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

8,701 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
20 Aug, 2026	Michael Egholm	President Ceo	Disposed F	97,627	$0.67	$65.61K	6,137,704	Direct
20 Aug, 2026	Sean Mackay	Svp Chief Business Officer	Disposed F	25,729	$0.67	$17.29K	1,480,823	Direct
20 Aug, 2026	Hanjoon Alex Kim	Chief Financial Officer	Disposed F	28,195	$0.67	$18.95K	2,534,859	Direct
03 Aug, 2026	Michael Egholm	President Ceo	Disposed F	362,625	$0.87	$314.76K	6,235,331	Direct
23 Jul, 2026	Hanjoon Alex Kim	Chief Financial Officer	Disposed F	202,476	$0.90	$181.22K	2,563,054	Direct
18 Jun, 2026	Thomas D. Carey	Director	Acquired A	99,116	$0.00	$0	344,456	Direct
18 Jun, 2026	Eli Casdin	Director, TenPercentOwner	Acquired A	99,116	$0.00	$0	3,053,169	Direct
18 Jun, 2026	Frank Witney	Director	Acquired A	99,116	$0.00	$0	309,978	Direct
18 Jun, 2026	Troy Cox	Director	Acquired A	99,116	$0.00	$0	475,702	Direct
18 Jun, 2026	Kathy L Hibbs	Director	Acquired A	99,116	$0.00	$0	236,836	Direct
20 Jun, 2026	Sean Mackay	Svp Chief Business Officer	Acquired A	500,000	$0.00	$0	1,506,552	Direct
18 Jun, 2026	Fenel M Eloi	Director	Acquired A	99,116	$0.00	$0	335,299	Direct
18 Jun, 2026	Kathy L Hibbs	Director	Acquired A	175,923	$0.00	$0	175,923	Direct
18 Jun, 2026	Fenel M Eloi	Director	Acquired A	175,923	$0.00	$0	175,923	Direct
18 Jun, 2026	Thomas D. Carey	Director	Acquired A	263,884	$0.00	$0	263,884	Direct
18 Jun, 2026	Troy Cox	Director	Acquired A	175,923	$0.00	$0	175,923	Direct
18 Jun, 2026	Frank Witney	Director	Acquired A	175,923	$0.00	$0	175,923	Direct
18 Jun, 2026	Eli Casdin	Director, TenPercentOwner	Acquired A	175,923	$0.00	$0	175,923	Direct
20 May, 2026	Sean Mackay	Svp Chief Business Officer	Disposed F	25,729	$1.00	$25.73K	1,006,552	Direct
20 May, 2026	Michael Egholm	President Ceo	Disposed F	97,626	$1.00	$97.63K	6,597,956	Direct

Showing 1 to 20 of 8,701 transactions