LAB insider buying – Standard Biotools Inc.
31 insider purchases since 2016 worth $50.4M by 13 different insiders. Last 12 months: 5 purchases, $14.4M. Most recent filing: 2025-12-04.
Where insiders bought and sold LAB – last 5 yearsCEO / officers Directors Funds & 10% owners Sales
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Casdin Partners GP, LLC Director | $13.0M 3× · 9,475,000 sh | 2024-05-20 2025-11-24 | – | 69,845,281 shares as of 2025-11-26 | Holds - never sold |
| Casdin Eli Director | $7.9M 5× · 4,485,292 sh | 2024-05-15 2025-11-18 | – | 91,837,025 shares as of 2026-06-23 | Holds - never sold |
| Casdin Capital, LLC Director | $5.2M 1× · 4,820,959 sh | 2025-02-28 2025-02-28 | – | 61,653,250 shares as of 2025-03-04 | Holds - never sold |
| Casdin Amplify Fund, LP Director | $4.9M 2× · 2,825,408 sh | 2024-08-09 2024-08-19 | – | 58,551,472 shares as of 2024-08-21 | Holds - never sold |
| Caligan Partners LP 10% Owner | $4.2M 4× · 1,292,923 sh | 2022-04-06 2022-06-13 | – | 8,576,799 shares as of 2022-12-30 | Holds - never sold |
| JOHNSON DAVID EDWARD 10% Owner | $3.4M 4× · 1,771,648 sh | 2022-04-28 2022-08-03 | – | 16,265,374 shares as of 2023-07-03 | Holds - never sold |
| Casdin Private Growth Equity Fund II GP, LLC Director | $3.3M 2× · 1,451,403 sh | 2023-05-17 2024-03-04 | – | 2,748,255 shares as of 2025-03-04 | Holds - never sold |
| Casdin Private Growth Equity Fund, L.P. Director | $2.3M 2× · 1,319,562 sh | 2024-08-07 2024-08-27 | – | 59,551,472 shares as of 2024-08-29 | Holds - never sold |
| CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC Director | $2.1M 2× · 1,100,000 sh | 2024-08-22 2025-12-02 | – | 77,745,281 shares as of 2025-12-04 | Holds - never sold |
| Casdin Partners Master Fund, L.P. Director | $1.9M 3× · 1,550,000 sh | 2025-08-22 2025-11-13 | – | 82,334,918 shares as of 2025-11-17 | Holds - never sold |
| Casdin Private Growth Equity Fund II, L.P. Director | $1.9M 1× · 1,200,000 sh | 2024-08-14 2024-08-14 | – | 57,301,472 shares as of 2024-08-16 | Holds - never sold |
| Casdin Partners FO1-MSV, LP Director | $260,000 1× · 100,000 sh | 2024-05-23 2024-05-23 | – | 53,727,377 shares as of 2024-05-28 | Holds - never sold |
| Black Jeffrey G. CFO | $193,859 1× · 85,984 sh | 2023-05-18 2023-05-18 | – | 421,608 shares as of 2024-09-05 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2025 | 10 | $21.4M | 5 | – | – |
| 2024 | 11 | $18.5M | 8 | – | – |
| 2023 | 2 | $2.8M | 2 | – | – |
| 2022 | 8 | $7.7M | 2 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2025-12-04 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | 350,000 | $1.44 | $503,000 | +0.5% | SEC |
| 2025-11-26 | Casdin Partners GP, LLC | Director | 7,700,000 | $1.30 | $10.0M | +12.0% | SEC |
| 2025-11-20 | Casdin Eli | Director | 1,075,000 | $1.28 | $1.4M | +1.7% | SEC |
| 2025-11-17 | Casdin Partners Master Fund, L.P. | Director | 925,000 | $1.22 | $1.1M | +1.5% | SEC |
| 2025-11-12 | Casdin Partners GP, LLC | Director | 1,175,000 | $1.17 | $1.4M | +1.9% | SEC |
| 2025-09-11 | Casdin Partners Master Fund, L.P. | Director | 100,000 | $1.29 | $129,000 | +0.2% | SEC |
| 2025-09-05 | Casdin Eli | Director | 500,000 | $1.27 | $637,500 | +0.8% | SEC |
| 2025-08-26 | Casdin Partners Master Fund, L.P. | Director | 525,000 | $1.25 | $657,500 | +0.9% | SEC |
| 2025-08-15 | Casdin Eli | Director | 358,220 | $1.24 | $442,446 | +0.6% | SEC |
| 2025-03-04 | Casdin Capital, LLC | Director | 4,820,959 | $1.07 | $5.2M | +8.9% | SEC |
| 2024-08-29 | Casdin Private Growth Equity Fund, L.P. | Director | 250,000 | $2.19 | $547,500 | +0.5% | SEC |
| 2024-08-26 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | 750,000 | $2.06 | $1.5M | +1.4% | SEC |
| 2024-08-21 | Casdin Amplify Fund, LP | Director | 1,250,000 | $1.88 | $2.3M | +2.4% | SEC |
| 2024-08-16 | Casdin Private Growth Equity Fund II, L.P. | Director | 1,200,000 | $1.59 | $1.9M | +2.4% | SEC |
| 2024-08-13 | Casdin Amplify Fund, LP | Director | 1,575,408 | $1.62 | $2.6M | +3.2% | SEC |
| 2024-08-09 | Casdin Private Growth Equity Fund, L.P. | Director | 1,069,562 | $1.61 | $1.7M | +2.2% | SEC |
| 2024-08-06 | Casdin Eli | Director | 1,200,000 | $1.62 | $1.9M | +2.6% | SEC |
| 2024-05-28 | Casdin Partners FO1-MSV, LP | Director | 100,000 | $2.60 | $260,000 | +0.2% | SEC |
| 2024-05-22 | Casdin Partners GP, LLC | Director | 600,000 | $2.57 | $1.5M | +1.3% | SEC |
| 2024-05-17 | Casdin Eli | Director | 1,352,072 | $2.56 | $3.5M | +3.1% | SEC |
| 2024-03-06 | Casdin Private Growth Equity Fund II GP, LLC | Director | 251,403 | $2.57 | $646,176 | +2.2% | SEC |
| 2023-05-22 | Black Jeffrey G. | CFO | 85,984 | $2.25 | $193,859 | SEC | |
| 2023-05-19 | Casdin Private Growth Equity Fund II GP, LLC | Director | 1,200,000 | $2.19 | $2.6M | SEC | |
| 2022-08-05 | JOHNSON DAVID EDWARD | 10% Owner | 301,182 | $1.75 | $526,608 | +2.7% | SEC |
| 2022-08-02 | JOHNSON DAVID EDWARD | 10% Owner | 620,466 | $1.54 | $953,650 | +5.9% | SEC |
| 2022-06-15 | Caligan Partners LP | 10% Owner | 100,000 | $1.70 | $170,000 | +1.0% | SEC |
| 2022-06-06 | JOHNSON DAVID EDWARD | 10% Owner | 450,000 | $1.95 | $879,000 | +4.5% | SEC |
| 2022-05-10 | Caligan Partners LP | 10% Owner | 488,350 | $2.88 | $1.4M | +5.1% | SEC |
| 2022-05-02 | JOHNSON DAVID EDWARD | 10% Owner | 400,000 | $2.69 | $1.1M | +4.4% | SEC |
| 2022-04-13 | Caligan Partners LP | 10% Owner | 195,000 | $3.80 | $741,150 | +2.2% | SEC |
| 2022-04-08 | Caligan Partners LP | 10% Owner | 509,573 | $3.77 | $1.9M | +6.1% | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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