Standard Biotools LAB Insider Ownership

NASDAQ LAB

$0.65 +0.01 (+1.99%)

At close: Oct 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

164.99Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

22.89%

▼-0.289% pp QoQ

Shares Held by Insiders

89.75Mn

filed for Sep 2026

▼-1.25% QoQ

Shares Outstanding

392.12Mn

392,121,000 shares

Direct Holdings

14.91Mn

Indirect: 74.84Mn

Net Shares Traded (QoQ)

-1.13Mn

net selling 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

Updated Oct 10, 2026

Over the past 12 months, Standard Biotools insiders bought $14.44 million of stock on the open market (11.22Mn shares) and made no open-market sales.

Among Standard Biotools' insiders, Casdin Partners Master Fund, L.P. (Director and 10% owner) was the largest open-market buyer over the past 12 months, purchasing $14.44 million of stock (11.22Mn shares), most recently on December 4, 2025.
Apart from open-market trades, LAB insiders received 2.4Mn shares in stock awards, acquired 266.7K shares through option exercises and conversions and gave up 1.17Mn shares to cover taxes or exercise prices in the past 12 months.
Per Business Quant data, Standard Biotools insiders hold 89.75Mn shares in total based on their latest Form 4 filings, down 1.25% from 90.89Mn shares at the end of Q2 2026 and up 16.45% from 77.07Mn shares at the end of Q3 2025.
Direct holdings account for 14.91Mn shares (16.61%) of LAB's insider total, and indirect holdings through trusts, partnerships and family members for 74.84Mn shares (83.39%).
LAB's insider total is spread across 9 insiders who have filed a Form 4 in the past two years.
Standard Biotools' three largest insider shareholders, based on their latest Form 4 filings, are Eli Casdin (Director and 10% owner, 77.9Mn shares), Michael Egholm (President & CEO, 6.14Mn shares) and Hanjoon Alex Kim (Chief Financial Officer, 2.53Mn shares).
The holding of Eli Casdin makes up 86.79% of all shares held by Standard Biotools insiders.
Institutions owned 75.38% of LAB shares as of Q2 2026; insiders' latest Form 4 filings account for about 22.89%, leaving roughly 1.73% with other investors, including the public.
In the past year, 10 insiders of Standard Biotools submitted 32 Form 4 filings reporting trades, awards or other transactions.
Insider figures for LAB include Form 4 filings through August 24, 2026.

Form 4 Holdings

Insiders Holding LAB

Insiders 24

Shares held 164.99Mn

Of outstanding 42.08%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Partners Master Fund, L.P. Casdin	Director, TenPercentOwner	0	131,850,000	131,850,000	79.9%	04 Dec, 2025
2	Partners Lp Caligan	TenPercentOwner	0	16,265,374	16,265,374	9.9%	03 Jul, 2023
3	Michael Egholm	President Ceo	6,137,704	0	6,137,704	3.7%	24 Aug, 2026
4	Eli Casdin	Director, TenPercentOwner	3,053,169	0	3,053,169	1.9%	23 Jun, 2026
5	Hanjoon Alex Kim	Chief Financial Officer	2,534,859	0	2,534,859	1.5%	24 Aug, 2026
6	Sean Mackay	Svp Chief Business Officer	1,480,823	0	1,480,823	0.9%	24 Aug, 2026
7	Troy Cox	Director	475,702	0	475,702	0.3%	23 Jun, 2026
8	Jeffrey G. Black	Svp Chief Financial Officer	421,608	0	421,608	0.3%	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	0.2%	23 Jun, 2026
11	Stephen Christopher Linthwaite	President Ceo	328,473	0	328,473	0.2%	24 Feb, 2022
12	Frank Witney	Director	309,978	0	309,978	0.2%	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	0.1%	16 Jun, 2023
19	Martin D Madaus	Director	104,111	0	104,111	0.1%	20 Oct, 2023
20	Nicholas Khadder	Svp, Gen. Counsel Secretary	100,480	0	100,480	0.1%	03 Jun, 2022
21	Gerhard F Burbach	Director	96,827	0	96,827	0.1%	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

2,804 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
20 Aug, 2026	Hanjoon Alex Kim	Chief Financial Officer	Disposed F	28,195	$0.67	$18.95K	2,534,859	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	Michael Egholm	President Ceo	Disposed F	97,627	$0.67	$65.61K	6,137,704	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	Kathy L Hibbs	Director	Acquired A	99,116	$0.00	$0	236,836	Direct
18 Jun, 2026	Fenel M Eloi	Director	Acquired A	99,116	$0.00	$0	335,299	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
20 Jun, 2026	Sean Mackay	Svp Chief Business Officer	Acquired A	500,000	$0.00	$0	1,506,552	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	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 2,804 transactions