Medical Laboratories - Insider Trading Data
Insiders are officers, directors, or significant investors. This page shows insider sentiment and transactions for the Medical industry. Research shows that insider trades are predictive of future stock returns. By examining insider trades for an industry, we can understand what well-informed people think of the overall future industry prospects.
Medical Laboratories - Insider Buy/Sell Ratio
Insider selling and buying is a useful indicator for analyzing the market because it serves as a proxy for their optimism or pessimism in their own companies. By looking at ratio of total selling and buying across the entire market, we might be able to draw some conclusions about the future market.
We offer two charts here. The first one shows the total dollar volume of buying and selling by insiders. The second chart shows the ratio of the number of insiders selling, vs. the number of insiders buying. In both charts, we filter out trades made by indirect holders (such as trusts), and 10% owners (who, although considered an 'insider' by the SEC, do not actually manage the companies in which they are considered insiders).
Medical Laboratories - Transaction History
Click the link icon to see the full transaction history. Transactions reported as part of a 10b5-1 automatic trading plan will have an X in the column marked 10b-5.
| Tran Date |
Security | Form | Insider | Code | Direct | Share Price |
Shares Changed |
|
|---|---|---|---|---|---|---|---|---|
| 2026-05-22 | CSTL / Castle Biosciences, Inc. | 4 | Cole G Bradley | D | 13,667 | |||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO John Derek Maetzold | I | 20.196 | -212 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold | I | 20.196 | -212 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J | D | 20.196 | -420 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold | I | 20.196 | -212 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk | I | 20.196 | -212 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By Derek Maetzold 2020 Irrevocable Trust | I | 20.196 | -880 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold Descendants 2020 Trust | I | 20.196 | -1,035 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J | D | 2.39 | 420 | ||
| 2026-05-21 | CSTL / Castle Biosciences, Inc. | 4 | Juvenal Tobin W | D | 3.38 | 11,210 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | CLARK IAN T By The Thornton-Clark Family Trust, J Thornton-Clark & I Clark TTE Account | I | 106.9006 | -6,876 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 108.9674 | -9,852 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 105.875 | -1,200 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Hidalgo Medina Manuel | D | 107.0956 | -1,000 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 111.1447 | -37,163 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 102.57 | -900 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 103.8178 | -1,366 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 112.7592 | -26,352 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 110.0959 | -28,908 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 108.1061 | -33,069 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 105.0079 | -11,919 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 106.9919 | -21,171 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Hidalgo Medina Manuel | D | 107.073 | -250 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 112.0197 | -37,900 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Talasaz AmirAli Shares held by Talasaz and Eskandari 2017 Family Trust | I | 100.95 | -200 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Saia John G. | D | 105.3433 | -5,632 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold | I | 20.002 | -66 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk | I | 20.002 | -66 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J | D | 20.002 | -130 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold | I | 20.002 | -66 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold Descendants 2020 Trust | I | 20.002 | -322 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By The Maetzold 2018 Remainder Trust FBO John Derek Maetzold | I | 20.002 | -66 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J By Derek Maetzold 2020 Irrevocable Trust | I | 20.002 | -273 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Saia John G. | D | 106.712 | -7,187 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Saia John G. | D | 107.2269 | -7,181 | ||
| 2026-05-20 | VCYT / Veracyte, Inc. | 4 | EPSTEIN ROBERT S | D | 44.0129 | -10,000 | ||
| 2026-05-20 | GH / Guardant Health, Inc. | 4 | Hidalgo Medina Manuel | D | 32.55 | 1,000 | ||
| 2026-05-20 | CSTL / Castle Biosciences, Inc. | 4 | MAETZOLD DEREK J | D | 2.39 | 130 | ||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | Gregg Vicky B | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | PFEIFFER GARY M | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | Doi Tracey | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | Lassiter Wright III | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | Diaz Luis | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | WENTWORTH TIMOTHY C | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | MORRISON DENISE M | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | CARTER ROBERT B | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | RING TIMOTHY M | D | 1,142 | |||
| 2026-05-20 | DGX / Quest Diagnostics Incorporated | 4 | MAIN TIMOTHY L | D | 1,142 | |||
| 2026-05-19 | CELC / Celcuity Inc. | 4 | Buller Richard E By Trust | I | 1,029 | |||
| 2026-05-19 | CELC / Celcuity Inc. | 4 | Buller Richard E | D | -1,029 |
