LAB
Standard Biotools Inc
NASDAQ: LAB · HEALTHCARE · MEDICAL DEVICES
$1.00
-1.72% today
Updated 2026-06-03
Market cap
$324.80M
P/E ratio
—
P/S ratio
3.77x
EPS (TTM)
$-0.13
Dividend yield
—
52W range
$1 – $2
Volume
3.7M
Standard Biotools Inc (LAB) Insider transactions
Net insider activity
Net buying (32,652,263 shares)
Buy transactions
63
Sell transactions
37
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-20 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 25,729 | $1.00 | $25729.00 |
| 2026-05-20 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 18,871 | $1.00 | $18871.00 |
| 2026-05-20 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 97,626 | $1.00 | $97626.00 |
| 2026-04-06 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 70,183 | — | — |
| 2026-04-06 | KIM, HANJOON ALEX | Chief Financial Officer | Buy | 70,183 | — | — |
| 2026-04-06 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 21,301 | $0.91 | $19341.31 |
| 2026-04-06 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 196,513 | — | — |
| 2026-04-06 | EGHOLM, MICHAEL | Director, President & CEO | Buy | 196,513 | — | — |
| 2026-04-06 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 95,014 | $0.91 | $86272.71 |
| 2026-03-20 | MACKAY, SEAN | SVP & Chief Business Officer | Buy | 612,240 | — | — |
| 2026-03-20 | MACKAY, SEAN | SVP & Chief Business Officer | Buy | 272,107 | — | — |
| 2026-03-20 | KIM, HANJOON ALEX | Chief Financial Officer | Buy | 727,140 | — | — |
| 2026-03-20 | KIM, HANJOON ALEX | Chief Financial Officer | Buy | 323,173 | — | — |
| 2026-03-20 | EGHOLM, MICHAEL | Director, President & CEO | Buy | 2,345,340 | — | — |
| 2026-03-20 | EGHOLM, MICHAEL | Director, President & CEO | Buy | 1,042,373 | — | — |
| 2026-02-26 | COX, TROY | Director | Buy | 57,264 | $1.17 | $66998.88 |
| 2026-02-26 | CASDIN, ELI | Director, 10% Owner | Buy | 52,991 | $1.17 | $61999.47 |
| 2026-02-26 | CAREY, THOMAS D. | Director | Buy | 51,282 | $1.17 | $59999.94 |
| 2026-02-23 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 19,661 | $1.15 | $22610.15 |
| 2026-02-23 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 12,740 | $1.15 | $14651.00 |
| 2026-02-23 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 66,127 | $1.15 | $76046.05 |
| 2025-12-04 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 150,000 | $1.45 | $217020.00 |
| 2025-12-03 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 75,000 | $1.44 | $108037.50 |
| 2025-12-02 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 125,000 | $1.42 | $177512.50 |
| 2025-11-25 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 7,550,000 | $1.30 | $9.84M |
| 2025-11-24 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 150,000 | $1.43 | $214875.00 |
| 2025-11-20 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 19,661 | $1.28 | $25166.08 |
| 2025-11-20 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 12,739 | $1.28 | $16305.92 |
| 2025-11-20 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 63,529 | $1.28 | $81317.12 |
| 2025-11-20 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 450,000 | $1.30 | $586260.00 |
| 2025-11-19 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 350,000 | $1.28 | $448910.00 |
| 2025-11-18 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 275,000 | $1.23 | $339405.00 |
| 2025-11-17 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 225,000 | $1.22 | $275580.00 |
| 2025-11-14 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 250,000 | $1.24 | $309800.00 |
| 2025-11-13 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 450,000 | $1.20 | $541395.00 |
| 2025-11-12 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 375,000 | $1.19 | $445837.50 |
| 2025-11-11 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 300,000 | $1.20 | $358800.00 |
| 2025-11-10 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 275,000 | $1.17 | $321915.00 |
| 2025-11-07 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 225,000 | $1.12 | $252765.00 |
| 2025-09-09 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 100,000 | $1.29 | $128920.00 |
| 2025-09-04 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 250,000 | $1.28 | $319350.00 |
| 2025-09-03 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 250,000 | $1.27 | $316400.00 |
| 2025-08-26 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 125,000 | $1.26 | $157937.50 |
| 2025-08-25 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 200,000 | $1.24 | $248180.00 |
| 2025-08-22 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 200,000 | $1.26 | $252680.00 |
| 2025-08-20 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 19,661 | $1.27 | $24969.47 |
| 2025-08-20 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 12,739 | $1.27 | $16178.53 |
| 2025-08-20 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 54,919 | $1.27 | $69747.13 |
| 2025-08-15 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 150,000 | $1.22 | $183210.00 |
| 2025-08-14 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 133,220 | $1.21 | $161542.57 |
| 2025-08-13 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 75,000 | $1.31 | $98280.00 |
| 2025-08-01 | KIM, HANJOON ALEX | Chief Financial Officer | Buy | 1,500,000 | — | — |
| 2025-08-01 | EGHOLM, MICHAEL | Director, President & CEO | Buy | 3,000,000 | — | — |
| 2025-06-20 | WITNEY, FRANK | Director | Buy | 125,660 | — | — |
| 2025-06-20 | WITNEY, FRANK | Director | Buy | 94,592 | — | — |
| 2025-06-20 | HIBBS, KATHY L | Director | Buy | 125,660 | — | — |
| 2025-06-20 | HIBBS, KATHY L | Director | Buy | 94,592 | — | — |
| 2025-06-20 | ELOI, FENEL M | Director | Buy | 125,660 | — | — |
| 2025-06-20 | ELOI, FENEL M | Director | Buy | 94,592 | — | — |
| 2025-06-20 | COX, TROY | Director | Buy | 125,660 | — | — |
| 2025-06-20 | COX, TROY | Director | Buy | 94,592 | — | — |
| 2025-06-20 | CASDIN, ELI | Director, 10% Owner | Buy | 125,660 | — | — |
| 2025-06-20 | CASDIN, ELI | Director, 10% Owner | Buy | 94,592 | — | — |
| 2025-06-20 | CAREY, THOMAS D. | Director | Buy | 188,490 | — | — |
| 2025-06-20 | CAREY, THOMAS D. | Director | Buy | 94,592 | — | — |
| 2025-05-28 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 23,919 | $1.09 | $26071.71 |
| 2025-05-28 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 2,583 | $1.09 | $2815.47 |
| 2025-05-28 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 9,906 | $1.09 | $10797.54 |
| 2025-05-23 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 13,217 | $0.94 | $12437.20 |
| 2025-05-23 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 1,428 | $0.94 | $1343.75 |
| 2025-05-23 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 5,473 | $0.94 | $5150.09 |
| 2025-05-22 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 12,536 | $1.00 | $12561.07 |
| 2025-05-22 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 1,355 | $1.00 | $1357.71 |
| 2025-05-22 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 5,116 | $1.00 | $5126.23 |
| 2025-05-21 | MACKAY, SEAN | SVP & Chief Business Officer | Sale | 12,838 | $1.03 | $13223.14 |
| 2025-05-21 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 1,407 | $1.03 | $1449.21 |
| 2025-05-21 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 4,719 | $1.03 | $4860.57 |
| 2025-05-20 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 6,364 | $1.05 | $6682.20 |
| 2025-05-20 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 18,343 | $1.05 | $19260.15 |
| 2025-04-04 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 70,183 | — | — |
| 2025-04-04 | KIM, HANJOON ALEX | Chief Financial Officer | Buy | 70,183 | — | — |
| 2025-04-04 | KIM, HANJOON ALEX | Chief Financial Officer | Sale | 21,441 | $1.07 | $22941.87 |
| 2025-04-04 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 196,512 | — | — |
| 2025-04-04 | EGHOLM, MICHAEL | Director, President & CEO | Buy | 196,512 | — | — |
| 2025-04-04 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 57,676 | $1.07 | $61713.32 |
| 2025-03-21 | MACKAY, SEAN | SVP & Chief Business Officer | Buy | 422,500 | — | — |
| 2025-03-21 | MACKAY, SEAN | SVP & Chief Business Officer | Buy | 281,667 | — | — |
| 2025-03-21 | KIM, HANJOON ALEX | Chief Financial Officer | Buy | 507,500 | — | — |
| 2025-03-21 | KIM, HANJOON ALEX | Chief Financial Officer | Buy | 338,333 | — | — |
| 2025-03-21 | EGHOLM, MICHAEL | Director, President & CEO | Buy | 1,782,500 | — | — |
| 2025-03-21 | EGHOLM, MICHAEL | Director, President & CEO | Buy | 1,188,333 | — | — |
| 2025-02-28 | COX, TROY | Director | Buy | 62,910 | $1.07 | $66999.15 |
| 2025-02-28 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 4,820,959 | $1.07 | $5.13M |
| 2025-02-28 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Sale | 545,000 | $1.07 | $580425.00 |
| 2025-02-28 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 58,215 | $1.07 | $61998.97 |
| 2025-02-28 | CAREY, THOMAS D. | Director | Buy | 56,338 | $1.07 | $59999.97 |
| 2025-02-20 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 31,031 | $1.39 | $43133.09 |
| 2024-11-20 | EGHOLM, MICHAEL | Director, President & CEO | Sale | 28,795 | $1.51 | $43480.45 |
| 2024-08-27 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 250,000 | $2.19 | $546750.00 |
| 2024-08-26 | CASDIN, PARTNERS MASTER FUND, L.P. | Director, 10% Owner | Buy | 150,000 | $2.15 | $322455.00 |
Frequently asked questions
Are LAB insiders buying or selling?
Over the transactions on record, LAB insiders have been net buyers, with about $1.47M in stock sold across 37 sales, against 33 open-market purchases.
Does insider selling at LAB mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which LAB insiders are selling the most?
Recent selling is concentrated in a few names. EGHOLM, MICHAEL accounts for the largest share on record, with about $604530.46 sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.