Insider Screener
Real-time Form 4 Filtering Engine
| Filing Date | Trade Date | Ticker | Company Name | Reporting Person | Relationship | Industry (by SEC) | Type | Price | Qty | Total, $ | Owned After | Change, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-04-04 01:05 | 2026-04-01 | NTRA | Natera, Inc. | Moshkevich Solomon | Officer; PRESIDENT, CLINICALDIAGNOSTICS | Services-Medical Laboratories | SALE | $202.30 | 3,000 | $606,899 | 147,882 | -2.0% |
| 2026-04-04 01:05 | 2026-04-01 | NTRA | Natera, Inc. | RABINOWITZ DANIEL | Officer; SEC. AND CHIEF LEGAL OFFICER | Services-Medical Laboratories | SALE | $203.31 | 8,400 | $1,707,814 | 224,885 | -3.6% |
| 2026-04-02 20:05 | 2026-03-31 | CELC | Celcuity Inc. | Buller Richard E | Director | Services-Medical Laboratories | OPT+S | $110.27 | 3,000 | $330,804 | 6,760 | -30.7% |
| 2026-04-02 11:17 | 2026-03-31 | BNR | Burning Rock Biotech Ltd | Han Yusheng | Director | Services-Medical Laboratories | BUY | $17.36 | 314,870 | $5,466,143 | 17,672,676 | +1.8% |
| 2026-03-30 22:29 | 2026-03-26 | CSTL | CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Director, Officer; Pres. & Chief Exec. Officer | Services-Medical Laboratories | OPT+S | $25.55 | 4,172 | $106,599 | 3,058 | -57.7% |
| 2026-03-30 16:54 | 2026-03-27 | LH | LABCORP HOLDINGS INC. | Wilkinson Peter J | Officer; SVP, Chief Accounting Officer | Services-Medical Laboratories | SALE | $267.05 | 1,633 | $436,093 | 1,852 | -46.9% |
| 2026-03-30 16:44 | 2026-03-27 | LH | LABCORP HOLDINGS INC. | Meltzer Jonathan C | Officer; EVP, Operations | Services-Medical Laboratories | SALE | $267.05 | 839 | $224,055 | 3,620 | -18.8% |
| 2026-03-23 20:15 | 2026-03-19 | RDNT | RadNet, Inc. | Sorensen Alma Gregory | Director, Officer; Chief Strategy Officer | Services-Medical Laboratories | SALE | $62.20 | 15,000 | $933,014 | 1,208,923 | -1.2% |
| 2026-03-21 01:05 | 2026-03-18 | NTRA | Natera, Inc. | Sheena Jonathan | Director, Other | Services-Medical Laboratories | SALE | $198.75 | 4,570 | $908,301 | 21,032 | -17.9% |
| 2026-03-19 21:16 | 2026-03-18 | GH | Guardant Health, Inc. | Tariq Musa | Director | Services-Medical Laboratories | SALE | $88.09 | 348 | $30,655 | 8,394 | -4.0% |
| 2026-03-19 20:21 | 2026-03-17 | CSTL | CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Director, Officer; Pres. & Chief Exec. Officer | Services-Medical Laboratories | SALE | $25.91 | 19,300 | $500,098 | 21,479 | -47.3% |
| 2026-03-18 23:38 | 2026-03-18 | RDNT | RadNet, Inc. | Sorensen Alma Gregory | Director, Officer; Chief Strategy Officer | Services-Medical Laboratories | SALE | $62.15 | 15,000 | $932,280 | 1,223,923 | -1.2% |
| 2026-03-17 20:06 | 2026-03-16 | FTRE | Fortrea Holdings Inc. | Mcconnell Jill G. | Officer; Chief Financial Officer | Services-Medical Laboratories | OPT+S | $9.22 | 1,804 | $16,633 | 72,276 | -2.4% |
| 2026-03-18 01:05 | 2026-03-13 | NTRA | Natera, Inc. | Chapman Rowan E | Director | Services-Medical Laboratories | SALE | $191.38 | 122 | $23,348 | 5,752 | -2.1% |
| 2026-03-17 22:46 | 2026-03-16 | GH | Guardant Health, Inc. | Bell Michael Brian | Officer; Chief Financial Officer | Services-Medical Laboratories | OPT+S | $87.04 | 3,000 | $261,111 | 43,601 | -6.4% |
| 2026-03-17 20:36 | 2026-03-13 | CSTL | CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Director, Officer; Pres. & Chief Exec. Officer | Services-Medical Laboratories | SALE | $25.75 | 30,779 | $792,408 | 40,779 | -43.0% |
| 2026-03-17 20:08 | 2026-03-16 | FTRE | Fortrea Holdings Inc. | Morais Mark A. | Officer; Chief Operating Officer | Services-Medical Laboratories | OPT+S | $9.22 | 1,804 | $16,633 | 69,899 | -2.5% |
| 2026-03-17 01:05 | 2026-03-12 | NTRA | Natera, Inc. | Rabinowitz Matthew | Director, Officer; EXECUTIVE CHAIRMAN | Services-Medical Laboratories | OPT+S | $191.42 | 200,000 | $38,283,380 | 2,310,772 | -8.0% |
| 2026-03-16 20:07 | 2026-03-12 | CSTL | CASTLE BIOSCIENCES INC | Juvenal Tobin W | Officer; Chief Commercial Officer | Services-Medical Laboratories | SALE | $25.24 | 20,863 | $526,582 | 86,825 | -19.4% |
| 2026-03-13 20:10 | 2026-03-11 | CSTL | CASTLE BIOSCIENCES INC | MAETZOLD DEREK J | Director, Officer; Pres. & Chief Exec. Officer | Services-Medical Laboratories | OPT+S | $25.67 | 44,125 | $1,132,821 | 71,558 | -38.1% |
| 2026-03-13 00:12 | 2026-03-10 | SERA | SERA PROGNOSTICS, INC. | Aerts Austin | Officer; Chief Financial Officer | Services-Medical Laboratories | SALE | $1.92 | 7,088 | $13,610 | 264,452 | -2.6% |
| 2026-03-13 00:12 | 2026-03-11 | SERA | SERA PROGNOSTICS, INC. | Boniface John J. | Officer; Chief Scientific Officer | Services-Medical Laboratories | SALE | $2.04 | 1,517 | $3,095 | 145,842 | -1.0% |
| 2026-03-13 00:12 | 2026-03-11 | SERA | SERA PROGNOSTICS, INC. | Harrison Robert Gardner | Officer; Chief Information Officer | Services-Medical Laboratories | SALE | $2.04 | 716 | $1,461 | 76,712 | -0.9% |
| 2026-03-13 00:13 | 2026-03-11 | SERA | SERA PROGNOSTICS, INC. | Jackson Benjamin | Officer; General Counsel | Services-Medical Laboratories | SALE | $2.04 | 1,027 | $2,095 | 114,720 | -0.9% |
| 2026-03-13 00:14 | 2026-03-11 | SERA | SERA PROGNOSTICS, INC. | Kearney Paul | Officer; Chief Data Officer | Services-Medical Laboratories | SALE | $2.04 | 1,396 | $2,848 | 163,961 | -0.8% |
| 2026-03-13 00:14 | 2026-03-10 | SERA | SERA PROGNOSTICS, INC. | Lindgardt Zhenya | Director, Officer; Chief Executive Officer | Services-Medical Laboratories | SALE | $1.92 | 25,612 | $49,080 | 738,314 | -3.4% |
| 2026-03-11 21:10 | 2026-03-10 | FTRE | Fortrea Holdings Inc. | Mcconnell Jill G. | Officer; Chief Financial Officer | Services-Medical Laboratories | OPT+S | $9.07 | 5,061 | $45,903 | 69,796 | -6.8% |
| 2026-03-12 01:35 | 2026-03-10 | NTRA | Natera, Inc. | Chapman Steven Leonard | Director, Officer; CEO AND PRESIDENT | Services-Medical Laboratories | SALE | $204.13 | 5,623 | $1,147,838 | 156,607 | -3.5% |
| 2026-03-12 01:35 | 2026-03-10 | NTRA | Natera, Inc. | Brophy Michael Burkes | Officer; CHIEF FINANCIAL OFFICER | Services-Medical Laboratories | SALE | $204.13 | 785 | $160,244 | 63,354 | -1.2% |
| 2026-03-12 01:05 | 2026-03-10 | NTRA | Natera, Inc. | Fesko John | Officer; PRESIDENT, CHIEF BUS. OFFICER | Services-Medical Laboratories | SALE | $204.13 | 707 | $144,322 | 189,199 | -0.4% |
| 2026-03-12 01:05 | 2026-03-10 | NTRA | Natera, Inc. | Sheena Jonathan | Director, Other | Services-Medical Laboratories | SALE | $204.13 | 127 | $25,925 | 262,325 | 0.0% |
| 2026-03-12 01:05 | 2026-03-10 | NTRA | Natera, Inc. | RABINOWITZ DANIEL | Officer; SEC. AND CHIEF LEGAL OFFICER | Services-Medical Laboratories | SALE | $204.13 | 1,745 | $356,212 | 233,285 | -0.7% |
| 2026-03-11 22:05 | 2026-03-10 | NTRA | Natera, Inc. | Moshkevich Solomon | Officer; PRESIDENT, CLINICALDIAGNOSTICS | Services-Medical Laboratories | SALE | $204.13 | 915 | $186,781 | 150,882 | -0.6% |
| 2026-03-11 21:14 | 2026-03-10 | FTRE | Fortrea Holdings Inc. | Morais Mark A. | Officer; Chief Operating Officer | Services-Medical Laboratories | OPT+S | $9.07 | 4,599 | $41,713 | 67,419 | -6.4% |
| 2026-03-11 21:16 | 2026-03-10 | FTRE | Fortrea Holdings Inc. | Parks Robert | Officer; Chief Accounting Officer | Services-Medical Laboratories | OPT+S | $9.07 | 1,927 | $17,478 | 22,389 | -7.9% |
| 2026-03-10 21:54 | 2026-03-09 | SERA | SERA PROGNOSTICS, INC. | Kearney Paul | Officer; Chief Data Officer | Services-Medical Laboratories | SALE | $1.96 | 2,026 | $3,971 | 165,357 | -1.2% |
| 2026-03-10 21:53 | 2026-03-09 | SERA | SERA PROGNOSTICS, INC. | Jackson Benjamin | Officer; General Counsel | Services-Medical Laboratories | SALE | $1.96 | 3,119 | $6,113 | 115,747 | -2.6% |
| 2026-03-10 21:53 | 2026-03-09 | SERA | SERA PROGNOSTICS, INC. | Boniface John J. | Officer; Chief Scientific Officer | Services-Medical Laboratories | SALE | $1.96 | 3,038 | $5,954 | 147,359 | -2.0% |
| 2026-03-10 21:53 | 2026-03-09 | SERA | SERA PROGNOSTICS, INC. | Aerts Austin | Officer; Chief Financial Officer | Services-Medical Laboratories | SALE | $1.96 | 674 | $1,321 | 271,540 | -0.2% |
| 2026-03-10 21:53 | 2026-03-09 | SERA | SERA PROGNOSTICS, INC. | Harrison Robert Gardner | Officer; Chief Information Officer | Services-Medical Laboratories | SALE | $1.96 | 3,360 | $6,586 | 77,428 | -4.2% |
| 2026-03-11 01:05 | 2026-03-06 | NTRA | Natera, Inc. | RABINOWITZ DANIEL | Officer; SEC. AND CHIEF LEGAL OFFICER | Services-Medical Laboratories | OPT+S | $196.08 | 8,398 | $1,646,696 | 233,285 | -3.5% |
| 2026-03-09 20:12 | 2026-03-05 | CSTL | CASTLE BIOSCIENCES INC | Cole G Bradley | Director | Services-Medical Laboratories | OPT+S | $28.47 | 7,403 | $210,727 | 19,309 | -27.7% |
| 2026-03-10 01:35 | 2026-03-05 | GRAL | GRAIL, Inc. | RAGUSA ROBERT P | Director, Officer; Chief Executive Officer | Services-Medical Laboratories | SALE | $48.48 | 8,441 | $409,246 | 642,084 | -1.3% |
| 2026-03-10 01:36 | 2026-03-05 | GRAL | GRAIL, Inc. | Ofman Joshua J. | Officer; President | Services-Medical Laboratories | SALE | $48.86 | 3,627 | $177,227 | 432,881 | -0.8% |
| 2026-03-10 01:36 | 2026-03-05 | GRAL | GRAIL, Inc. | Freidin Aaron | Officer; Chief Financial Officer | Services-Medical Laboratories | SALE | $48.96 | 3,147 | $154,062 | 306,475 | -1.0% |
| 2026-03-09 22:38 | 2026-03-06 | GH | Guardant Health, Inc. | Hidalgo Medina Manuel | Director | Services-Medical Laboratories | OPT+S | $91.54 | 1,300 | $118,997 | 1,193 | -52.1% |
| 2026-03-09 20:13 | 2026-03-05 | CSTL | CASTLE BIOSCIENCES INC | Stokes Frank | Officer; Chief Financial Officer | Services-Medical Laboratories | SALE | $27.98 | 6,001 | $167,908 | 60,085 | -9.1% |
| 2026-03-07 00:32 | 2026-03-04 | VCYT | VERACYTE, INC. | Leite John | Officer; Chief Commercial Officer-CLIA | Services-Medical Laboratories | SALE | $35.19 | 5,260 | $185,083 | 107,580 | -4.7% |
| 2026-03-07 00:32 | 2026-03-04 | VCYT | VERACYTE, INC. | McGuire Annie | Officer; SVP, General Counsel | Services-Medical Laboratories | SALE | $35.55 | 6,658 | $236,725 | 94,706 | -6.6% |
| 2026-03-07 00:33 | 2026-03-04 | VCYT | VERACYTE, INC. | Chambers Rebecca | Officer; Chief Financial Officer | Services-Medical Laboratories | SALE | $36.14 | 18,341 | $662,869 | 131,196 | -12.3% |
Strategic Signal Filtering
Our screener allows you to cut through the noise of routine stock grants and small trades. By focusing on high-value transactions from C-suite executives (CEO/CFO), you can identify where the "Smart Money" is being deployed with maximum conviction.
Investing Without Illusions
Insider data is not a magic wand, but it is the most honest indicator available. While insiders sell for many reasons (taxes, personal needs), they generally buy for only one: they believe the stock price is undervalued. We provide the tools to track these skin-in-the-game moves.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.