Stock Scorer

Standard Biotools Inc. (LAB) · Insider trading

What Standard Biotools's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months
$14.41M
1 insider, 15 trades
Sold, 12 months
$0
0 insiders
Net, 12 months
+$14.41M
bought less sold
Latest filing
2026-08-24
filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

2025-01 2025-02: $5.16M bought 2025-05: $57,451 sold 2025-07 2025-08: $1.10M bought 2025-09: $766,500 bought 2025-11: $13.91M bought 2025-12: $503,000 bought 2026-01 2026-07
Bought Sold Largest month: $13.91M

Who traded, two years

InsiderBoughtSold TradesLast tradeHolds after
Casdin Partners GP, LLCDirector, 10% owner $21.43M – 25 2025-12-04 –
Mackay SeanSVP & Chief Business Officer – $38,183 3 2025-05-23 843,076
Egholm MichaelDirector, President & CEO – $15,121 3 2025-05-23 2,741,191
Kim Hanjoon AlexChief Financial Officer – $4,147 3 2025-05-23 930,286

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

DateInsiderTradeShares PriceValueHolds afterFiling
2025-12-04 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 150,000 1.45 $217,500 72,100,000 Form 4
2025-12-03 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 75,000 1.44 $108,000 71,950,000 Form 4
2025-12-02 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 125,000 1.42 $177,500 71,875,000 Form 4
2025-11-25 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 7,550,000 1.30 $9.81M 71,750,000 Form 4
2025-11-24 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 150,000 1.43 $214,500 64,200,000 Form 4
2025-11-20 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 450,000 1.30 $585,000 64,050,000 Form 4
2025-11-19 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 350,000 1.28 $448,000 63,600,000 Form 4
2025-11-18 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 275,000 1.23 $338,250 63,250,000 Form 4
2025-11-17 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 225,000 1.22 $274,500 62,975,000 Form 4
2025-11-14 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 250,000 1.24 $310,000 62,750,000 Form 4
2025-11-13 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 450,000 1.20 $540,000 62,500,000 Form 4
2025-11-12 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 375,000 1.19 $446,250 62,050,000 Form 4
2025-11-11 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 300,000 1.20 $360,000 61,675,000 Form 4
2025-11-10 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 275,000 1.17 $321,750 61,375,000 Form 4
2025-11-07 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 225,000 1.12 $252,000 61,100,000 Form 4
2025-09-09 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 100,000 1.29 $129,000 60,875,000 Form 4
2025-09-04 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 250,000 1.28 $320,000 60,775,000 Form 4
2025-09-03 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 250,000 1.27 $317,500 60,525,000 Form 4
2025-08-26 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 125,000 1.26 $157,500 60,275,000 Form 4
2025-08-25 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 200,000 1.24 $248,000 60,150,000 Form 4
2025-08-22 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 200,000 1.26 $252,000 59,950,000 Form 4
2025-08-15 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 150,000 1.22 $183,000 59,750,000 Form 4
2025-08-14 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 133,220 1.21 $161,196 59,600,000 Form 4
2025-08-13 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC Buyindirect 75,000 1.31 $98,250 59,466,780 Form 4
2025-05-23 Egholm MichaelDirector, President & CEO Sale 5,473 0.94 $5,145 2,741,191 Form 4
2025-05-23 Mackay SeanSVP & Chief Business Officer Sale 13,217 0.94 $12,424 843,076 Form 4
2025-05-23 Kim Hanjoon AlexChief Financial Officer Sale 1,428 0.94 $1,342 930,286 Form 4
2025-05-22 Egholm MichaelDirector, President & CEO Sale 5,116 1.00 $5,116 2,746,664 Form 4
2025-05-22 Kim Hanjoon AlexChief Financial Officer Sale 1,355 1.00 $1,355 931,714 Form 4
2025-05-22 Mackay SeanSVP & Chief Business Officer Sale 12,536 1.00 $12,536 856,293 Form 4
2025-05-21 Mackay SeanSVP & Chief Business Officer Sale 12,838 1.03 $13,223 868,829 Form 4
2025-05-21 Kim Hanjoon AlexChief Financial Officer Sale 1,407 1.03 $1,449 933,069 Form 4
2025-05-21 Egholm MichaelDirector, President & CEO Sale 4,719 1.03 $4,861 2,751,780 Form 4
2025-02-28 Casdin Partners GP, LLCDirector, 10% ownerwith Casdin Capital, LLC, Casdin Eli, Casdin Partners Master Fund, L.P., Casdin Private Growth Equity Fund, L.P., Casdin Private Growth Equity Fund GP, LLC, Casdin Private Growth Equity Fund II, L.P., Casdin Private Growth Equity Fund II GP, LLC, Casdin Amplify Fund, LP Buyindirect 4,820,959 1.07 $5.16M 58,846,780 Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

28 × shares withheld for tax27 × grant or award4 × option exercise2 × other
Show them
DateInsiderWhatShares PriceHolds afterFiling
2026-08-20 Egholm MichaelDirector, President & CEO Shares withheld for tax F −97,627 0.67 6,137,704 Form 4
2026-08-20 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −28,195 0.67 2,534,859 Form 4
2026-08-20 Mackay SeanSVP & Chief Business Officer Shares withheld for tax F −25,729 0.67 1,480,823 Form 4
2026-08-03 Egholm MichaelDirector, President & CEO Shares withheld for tax F −362,625 0.87 6,235,331 Form 4
2026-07-23 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −202,476 0.90 2,563,054 Form 4
2026-06-20 Mackay SeanSVP & Chief Business Officer Grant or award A +500,000 – 1,506,552 Form 4
2026-06-18 Hibbs Kathy LDirector Grant or award A +99,116 – 236,836 Form 4
2026-06-18 Eloi Fenel MDirector Grant or award A +99,116 – 335,299 Form 4
2026-06-18 Cox TroyDirector Grant or award A +99,116 – 475,702 Form 4
2026-06-18 Casdin EliDirector, 10% owner Grant or award A +99,116 – 3,053,169 Form 4
2026-06-18 Witney FrankDirector Grant or award A +99,116 – 309,978 Form 4
2026-06-18 Carey Thomas D.Director Grant or award A +99,116 – 344,456 Form 4
2026-05-20 Egholm MichaelDirector, President & CEO Shares withheld for tax F −97,626 1.00 6,597,956 Form 4
2026-05-20 Mackay SeanSVP & Chief Business Officer Shares withheld for tax F −25,729 1.00 1,006,552 Form 4
2026-05-20 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −18,871 1.00 2,760,530 Form 4
2026-04-06 Kim Hanjoon AlexChief Financial Officer Option exercise M +70,183 – 2,800,702 Form 4
2026-04-06 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −21,301 0.91 2,779,401 Form 4
2026-04-06 Egholm MichaelDirector, President & CEO Option exercise M +196,513 – 6,790,596 Form 4
2026-04-06 Egholm MichaelDirector, President & CEO Shares withheld for tax F −95,014 0.91 6,695,582 Form 4
2026-03-20 Kim Hanjoon AlexChief Financial Officer Grant or award A +323,173 – 2,730,519 Form 4
2026-03-20 Mackay SeanSVP & Chief Business Officer Grant or award A +272,107 – 1,032,281 Form 4
2026-03-20 Egholm MichaelDirector, President & CEO Grant or award A +1,042,373 – 6,594,083 Form 4
2026-02-26 Carey Thomas D.Director Grant or award A +51,282 1.17 245,340 Form 4
2026-02-26 Cox TroyDirector Grant or award A +57,264 1.17 376,586 Form 4
2026-02-26 Casdin EliDirector, 10% owner Grant or award A +52,991 1.17 2,954,053 Form 4
2026-02-23 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −12,740 1.15 2,407,346 Form 4
2026-02-23 Mackay SeanSVP & Chief Business Officer Shares withheld for tax F −19,661 1.15 760,174 Form 4
2026-02-23 Egholm MichaelDirector, President & CEO Shares withheld for tax F −66,127 1.15 5,551,710 Form 4
2025-11-20 Mackay SeanSVP & Chief Business Officer Shares withheld for tax F −19,661 1.28 779,835 Form 4
2025-11-20 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −12,739 1.28 2,415,086 Form 4
2025-11-20 Egholm MichaelDirector, President & CEO Shares withheld for tax F −63,529 1.28 5,617,837 Form 4
2025-08-20 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −12,739 1.27 2,427,825 Form 4
2025-08-20 Egholm MichaelDirector, President & CEO Shares withheld for tax F −54,919 1.27 5,681,366 Form 4
2025-08-20 Mackay SeanSVP & Chief Business Officer Shares withheld for tax F −19,661 1.27 799,496 Form 4
2025-08-01 Egholm MichaelDirector, President & CEO Grant or award A +3,000,000 – 5,736,285 Form 4
2025-08-01 Kim Hanjoon AlexChief Financial Officer Grant or award A +1,500,000 – 2,440,564 Form 4
2025-06-20 Witney FrankDirector Grant or award A +94,592 – 210,862 Form 4
2025-06-20 Hibbs Kathy LDirector Grant or award A +94,592 – 137,720 Form 4
2025-06-20 Casdin EliDirector, 10% owner Grant or award A +94,592 – 2,901,062 Form 4
2025-06-20 Carey Thomas D.Director Grant or award A +94,592 – 194,058 Form 4
2025-06-20 Eloi Fenel MDirector Grant or award A +94,592 – 236,183 Form 4
2025-06-20 Cox TroyDirector Grant or award A +94,592 – 256,412 Form 4
2025-05-28 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −2,583 1.09 927,703 Form 4
2025-05-28 Egholm MichaelDirector, President & CEO Shares withheld for tax F −9,906 1.09 2,731,285 Form 4
2025-05-28 Mackay SeanSVP & Chief Business Officer Shares withheld for tax F −23,919 1.09 819,157 Form 4
2025-05-20 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −6,364 1.05 934,476 Form 4
2025-05-20 Egholm MichaelDirector, President & CEO Shares withheld for tax F −18,343 1.05 2,756,499 Form 4
2025-04-04 Kim Hanjoon AlexChief Financial Officer Option exercise M +70,183 – 962,281 Form 4
2025-04-04 Kim Hanjoon AlexChief Financial Officer Shares withheld for tax F −21,441 1.07 940,840 Form 4
2025-04-04 Egholm MichaelDirector, President & CEO Option exercise M +196,512 – 2,832,518 Form 4
2025-04-04 Egholm MichaelDirector, President & CEO Shares withheld for tax F −57,676 1.07 2,774,842 Form 4
2025-03-21 Egholm MichaelDirector, President & CEO Grant or award A +1,188,333 – 2,636,006 Form 4
2025-03-21 Mackay SeanSVP & Chief Business Officer Grant or award A +281,667 – 881,667 Form 4
2025-03-21 Kim Hanjoon AlexChief Financial Officer Grant or award A +338,333 – 892,098 Form 4
2025-02-28 Casdin Partners GP, LLCDirector, 10% owner Other J +545,000 1.07 59,391,780 Form 4
2025-02-28 Casdin Partners GP, LLCDirector, 10% owner Other J −545,000 1.07 0 Form 4
2025-02-28 Casdin Partners GP, LLCDirector, 10% owner Grant or award A +58,215 1.07 2,806,470 Form 4
2025-02-28 Cox TroyDirector Grant or award A +62,910 1.07 224,730 Form 4
2025-02-28 Carey Thomas D.Director Grant or award A +56,338 1.07 99,466 Form 4
2025-02-20 Egholm MichaelDirector, President & CEO Shares withheld for tax F −31,031 1.39 1,447,673 Form 4
2024-11-20 Egholm MichaelDirector, President & CEO Shares withheld for tax F −28,795 1.51 1,473,704 Form 4

How to read it

Buy, sale
Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan
A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after
The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value
Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

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