Standard Biotools Inc. (LAB) Insider Ownership

Historic Insider Ownership Trends

As of April 22, 2026, Standard Biotools's top three insider holders are Partners Master Fund, L.P. Casdin (Director, 72.10Mn shares), Partners Master Fund, L.P. Casdin (Director, 62.05Mn shares), Partners Master Fund, L.P. Casdin (Director, 59.75Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Partners Master Fund, L.P. Casdin - 0 72,100,000 04 Dec, 2025
Partners Master Fund, L.P. Casdin - 0 62,050,000 12 Nov, 2025
Partners Master Fund, L.P. Casdin - 0 59,750,000 15 Aug, 2025
Partners Master Fund, L.P. Casdin - 0 53,775,821 26 Aug, 2024
Eli Casdin - 0 21,538,744 09 Jan, 2024
Partners Lp Caligan - 0 8,467,920 03 Jul, 2023
Partners Lp Caligan - 0 7,797,454 03 Jul, 2023
Michael Egholm President Ceo 6,695,582 0 08 Apr, 2026
Eli Casdin - 2,954,053 0 02 Mar, 2026
Partners Master Fund, L.P. Casdin - 2,806,470 0 04 Mar, 2025
Hanjoon Alex Kim Chief Financial Officer 2,779,401 0 08 Apr, 2026
Partners Master Fund, L.P. Casdin - 0 1,200,000 19 May, 2023
Partners Master Fund, L.P. Casdin - 0 1,200,000 19 May, 2023
Eli Casdin - 0 1,200,000 19 May, 2023
Sean Mackay Svp Chief Business Officer 1,032,281 0 08 Apr, 2026
Jeffrey G. Black Svp Chief Financial Officer 421,608 0 05 Sep, 2024
Troy Cox - 376,586 0 02 Mar, 2026
Stephen Christopher Linthwaite President Ceo 328,473 0 24 Feb, 2022
Stephen Christopher Linthwaite President Ceo 328,473 0 24 Feb, 2022
Thomas D. Carey - 245,340 0 02 Mar, 2026
Fenel M Eloi - 236,183 0 24 Jun, 2025
Vikram Jog Chief Financial Officer 217,622 0 23 Feb, 2023
Frank Witney - 210,862 0 24 Jun, 2025
Frank Witney - 210,862 0 24 Jun, 2025
Nicolas Barthelemy - 0 204,077 04 Apr, 2022
Kathy L Hibbs - 137,720 0 24 Jun, 2025
Carlos V Paya - 126,844 0 16 Jun, 2023
Bradley Allen Kreger Svp, Global Operations 119,157 0 23 May, 2022
Laura Clague - 104,791 0 16 Jun, 2023
Martin D Madaus - 104,111 0 20 Oct, 2023
Nicholas Khadder Svp, Gen. Counsel Secretary 100,480 0 03 Jun, 2022
Gerhard F Burbach - 96,827 0 17 Jun, 2022
Colin Mccracken Chief Commercial Officer 65,103 0 24 Feb, 2022
Colin Mccracken Chief Commercial Officer 65,103 0 24 Feb, 2022
Bill Colston - 59,288 0 17 Jun, 2022
Jeremy Steven Davis Svp Chief Commercial Officer 14,657 0 23 Feb, 2023

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
20 Mar, 2026 Michael Egholm Common Stock A 1,042,373 $0.00 6,594,083 D A
20 Mar, 2026 Sean Mackay Common Stock A 272,107 $0.00 1,032,281 D A
20 Mar, 2026 Hanjoon Alex Kim Common Stock A 323,173 $0.00 2,730,519 D A
06 Apr, 2026 Hanjoon Alex Kim Common Stock A 70,183 $0.00 2,800,702 D M
06 Apr, 2026 Michael Egholm Common Stock A 196,513 $0.00 6,790,596 D M
20 Mar, 2026 Sean Mackay Stock Option (Right to buy) A 612,240 $0.00 612,240 D A
06 Apr, 2026 Michael Egholm Common Stock D 95,014 $0.91 6,695,582 D F
06 Apr, 2026 Hanjoon Alex Kim Common Stock D 21,301 $0.91 2,779,401 D F
20 Mar, 2026 Michael Egholm Stock Option (Right to buy) A 2,345,340 $0.00 2,345,340 D A
20 Mar, 2026 Hanjoon Alex Kim Stock Option (Right to buy) A 727,140 $0.00 727,140 D A
06 Apr, 2026 Michael Egholm Restricted Stock Units D 196,513 $0.00 0 D M
06 Apr, 2026 Hanjoon Alex Kim Restricted Stock Units D 70,183 $0.00 0 D M
26 Feb, 2026 Eli Casdin Common Stock A 52,991 $1.17 2,954,053 D A
26 Feb, 2026 Troy Cox Common Stock A 57,264 $1.17 376,586 D A
26 Feb, 2026 Thomas D. Carey Common Stock A 51,282 $1.17 245,340 D A
23 Feb, 2026 Michael Egholm Common Stock D 66,127 $1.15 5,551,710 D F
23 Feb, 2026 Sean Mackay Common Stock D 19,661 $1.15 760,174 D F
23 Feb, 2026 Hanjoon Alex Kim Common Stock D 12,740 $1.15 2,407,346 D F
20 Nov, 2025 Hanjoon Alex Kim Common Stock D 12,739 $1.28 2,415,086 D F
20 Nov, 2025 Michael Egholm Common Stock D 63,529 $1.28 5,617,837 D F