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Healthcare / Diagnostics & Research

Exclusive insider sentiment analysis for the Diagnostics & Research sector. Track real-time Director purchases and institutional money flow to identify high-conviction opportunities before the market reacts.

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Filing Date Trade Date Ticker Company Name Reporting Person Relationship Industry Type Price Qty Total, $ Owned After Change, %
2026-07-22 20:05 2026-07-20 RVTY REVVITY, INC. Gonzales Anita Officer; Vice President and CAO Diagnostics & Research SALE $109.48 85 $9,306 7,201 -1.2%
2026-07-20 23:38 2026-07-16 BLLN BillionToOne, Inc. Johnson Nancy JoAnn Officer; See Remarks Diagnostics & Research SALE $128.29 14,199 $1,821,628 6,900 -67.3%
2026-07-18 01:05 2026-07-15 NTRA Natera, Inc. Chapman Rowan E Director Diagnostics & Research SALE $274.82 135 $37,101 4,663 -2.8%
2026-07-18 01:05 2026-07-15 NTRA Natera, Inc. Sheena Jonathan Director, Other Diagnostics & Research SALE $273.88 1,500 $410,825 18,032 -7.7%
2026-07-17 20:22 2026-07-16 CDNA CareDx, Inc. Valantine Hannah Director Diagnostics & Research OPT+S $36.15 28,779 $1,040,243 36,686 -44.0%
2026-07-17 20:23 2026-07-16 CDNA CareDx, Inc. Hanna John Walter JR Director, Officer; President and CEO Diagnostics & Research OPT+S $37.79 118,000 $4,458,642 653,448 -15.3%
2026-07-16 20:56 2026-07-16 GH Guardant Health, Inc. Tariq Musa Director Diagnostics & Research OPT+S $163.29 116 $18,942 11,182 -1.0%
2026-07-16 20:16 2026-07-14 CSTL CASTLE BIOSCIENCES INC MAETZOLD DEREK J Director, Officer; Pres. & Chief Exec. Officer Diagnostics & Research OPT+S $22.92 4,172 $95,622 12,090 -25.7%
2026-07-16 01:27 2026-07-15 PSNL Personalis, Inc. Chen Richard Officer; President and CMO Diagnostics & Research OPT+S $15.15 100,000 $1,515,000 173,880 -36.5%
2026-07-16 01:05 2026-07-13 NTRA Natera, Inc. Sheena Jonathan Director, Other Diagnostics & Research SALE $265.68 3,150 $836,898 246,202 -1.3%
2026-07-15 20:38 2026-07-13 BLLN BillionToOne, Inc. Tsao David Director, Officer; Chief Technology Officer Diagnostics & Research OPT+S $124.88 20,000 $2,497,698 1,000 -95.2%
2026-07-15 20:38 2026-07-13 BLLN BillionToOne, Inc. ten Bosch John Roderick Officer; SVP of Laboratory Operations Diagnostics & Research SALE $125.46 4,251 $533,330 29,301 -12.7%
2026-07-13 20:39 2026-07-09 BLLN BillionToOne, Inc. Sakakibara Shan Riku Officer; Chief Product Officer Diagnostics & Research OPT+S $125.00 8,000 $1,000,000 204,000 -3.8%
2026-07-13 20:39 2026-07-09 BLLN BillionToOne, Inc. Atay Oguzhan Director, Officer; Chairman and CEO Diagnostics & Research OPT+S $126.10 12,500 $1,576,276 0 -100.0%
2026-07-13 20:05 2026-07-09 TWST Twist Bioscience Corp Laponis Adam Officer; Chief Financial Officer Diagnostics & Research SALE $94.33 2,399 $226,307 110,276 -2.1%
2026-07-10 00:46 2026-07-09 PSNL Personalis, Inc. Hall Christopher M Director, Officer; Chief Executive Officer Diagnostics & Research OPT+S $15.08 100,000 $1,508,000 235,986 -29.8%
2026-07-08 23:06 2026-07-06 BLLN BillionToOne, Inc. Atay Oguzhan Director, Officer; Chairman and CEO Diagnostics & Research OPT+S $122.05 38,750 $4,729,379 175,000 -18.1%
2026-07-09 01:05 2026-07-06 NTRA Natera, Inc. Rabinowitz Matthew Director, Officer; EXECUTIVE CHAIRMAN Diagnostics & Research SALE $280.00 1,000 $280,000 4,000 -20.0%
2026-07-06 20:24 2026-07-01 CSTL CASTLE BIOSCIENCES INC Oelschlager Kristen M Officer; Chief Operating Officer Diagnostics & Research SALE $24.42 8,586 $209,650 21,874 -28.2%
2026-07-06 20:25 2026-07-01 CSTL CASTLE BIOSCIENCES INC MAETZOLD DEREK J Director, Officer; Pres. & Chief Exec. Officer Diagnostics & Research OPT+S $24.29 9,836 $238,916 12,368 -44.3%
2026-07-07 01:05 2026-07-01 NTRA Natera, Inc. Moshkevich Solomon Officer; PRESIDENT, CLINICALDIAGNOSTICS Diagnostics & Research SALE $272.90 3,000 $818,711 134,643 -2.2%
2026-07-07 01:05 2026-07-01 NTRA Natera, Inc. RABINOWITZ DANIEL Officer; SEC. AND CHIEF LEGAL OFFICER Diagnostics & Research SALE $272.29 16,800 $4,574,430 172,294 -8.9%
2026-07-07 00:38 2026-07-01 BLLN BillionToOne, Inc. Johnson Nancy JoAnn Officer; See Remarks Diagnostics & Research SALE $124.91 801 $100,056 21,099 -3.7%
2026-07-06 13:36 2026-07-02 LH LABCORP HOLDINGS INC. Vaughn Bryan T Officer; EVP and President, Diagnostics Diagnostics & Research OPT+S $286.19 234 $66,968 6,746 -3.4%
2026-07-06 13:37 2026-07-02 LH LABCORP HOLDINGS INC. Kyle Kathryn W Officer; EVP, Chief Legal Officer Diagnostics & Research OPT+S $286.19 92 $26,329 3,904 -2.3%
2026-07-02 12:30 2026-06-11 BNR Burning Rock Biotech Ltd Han Yusheng Director Diagnostics & Research BUY $8.45 731,410 $6,182,170 18,404,086 +4.1%
2026-07-01 20:23 2026-06-29 BLLN BillionToOne, Inc. ten Bosch John Roderick Officer; SVP of Laboratory Operations Diagnostics & Research SALE $120.00 1,416 $169,920 33,552 -4.0%
2026-07-01 20:59 2026-06-29 CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC. FOSTER JAMES C Director Diagnostics & Research SALE $225.00 75,000 $16,875,000 31,596 -70.4%
2026-06-30 21:40 2026-06-15 GH Guardant Health, Inc. Kalia Kumud Officer; Chief Information Officer Diagnostics & Research BUY $130.76 600 $78,456 41,414 +1.5%
2026-06-30 21:40 2026-06-10 GH Guardant Health, Inc. Kalia Kumud Officer; Chief Information Officer Diagnostics & Research SALE $130.97 1,200 $157,164 40,814 -2.9%
2026-06-30 21:29 2026-06-26 CDNA CareDx, Inc. Hanna John Walter JR Director, Officer; President and CEO Diagnostics & Research OPT+S $29.24 40,000 $1,169,736 661,959 -5.7%
2026-06-30 21:13 2026-06-26 GH Guardant Health, Inc. Talasaz AmirAli Director, Officer; Co-Chief Executive Officer Diagnostics & Research OPT+S $151.20 260,000 $39,312,650 1,881,336 -12.1%
2026-06-29 21:50 2026-06-29 PSNL Personalis, Inc. Tachibana Aaron Officer; CFO AND COO Diagnostics & Research OPT+S $14.00 4,982 $69,748 198,833 -2.4%
2026-06-26 20:05 2026-06-24 TWST Twist Bioscience Corp Cho Dennis Officer; See Remarks Diagnostics & Research SALE $89.75 14,205 $1,274,899 105,141 -11.9%
2026-06-27 01:05 2026-06-24 NTRA Natera, Inc. ROSENMAN HERM Director Diagnostics & Research SALE $250.00 16,530 $4,132,500 4,250 -79.5%
2026-06-27 01:05 2026-06-24 NTRA Natera, Inc. RABINOWITZ DANIEL Officer; SEC. AND CHIEF LEGAL OFFICER Diagnostics & Research SALE $251.65 33,600 $8,455,356 189,094 -15.1%
2026-06-26 23:56 2026-06-26 PSNL Personalis, Inc. Tachibana Aaron Officer; CFO AND COO Diagnostics & Research OPT+S $13.18 51,251 $675,488 198,833 -20.5%
2026-06-26 23:49 2026-06-26 PSNL Personalis, Inc. Hall Christopher M Director, Officer; Chief Executive Officer Diagnostics & Research OPT+S $13.15 100,000 $1,315,000 235,986 -29.8%
2026-06-26 21:20 2026-06-24 BLLN BillionToOne, Inc. Sakakibara Shan Riku Officer; Chief Product Officer Diagnostics & Research OPT+S $110.00 8,000 $880,000 208,000 -3.7%
2026-06-26 20:41 2026-06-25 TWST Twist Bioscience Corp Leproust Emily M. Director, Officer; Chief Executive Officer Diagnostics & Research SALE $95.00 18,880 $1,793,600 824,039 -2.2%
2026-06-26 01:41 2026-06-25 ILMN ILLUMINA, INC. Davies Scott M Officer; Chief Legal Officer Diagnostics & Research SALE $180.00 615 $110,700 20,953 -2.9%
2026-06-24 20:05 2026-06-22 TWST Twist Bioscience Corp Green Paula Officer; SVP of Human Resources Diagnostics & Research SALE $87.32 291 $25,411 120,414 -0.2%
2026-06-24 20:05 2026-06-22 TWST Twist Bioscience Corp Leproust Emily M. Director, Officer; Chief Executive Officer Diagnostics & Research SALE $87.32 1,688 $147,400 842,919 -0.2%
2026-06-24 20:05 2026-06-22 TWST Twist Bioscience Corp Cho Dennis Officer; See Remarks Diagnostics & Research SALE $87.32 346 $30,214 119,346 -0.3%
2026-06-23 21:28 2026-06-22 GH Guardant Health, Inc. POTTER MYRTLE S Director Diagnostics & Research SALE $131.16 1,556 $204,085 20,971 -6.9%
2026-06-23 21:29 2026-06-22 GH Guardant Health, Inc. Tariq Musa Director Diagnostics & Research SALE $131.16 1,951 $255,893 11,048 -15.0%
2026-06-23 01:05 2026-06-17 NTRA Natera, Inc. Sheena Jonathan Director, Other Diagnostics & Research SALE $219.87 1,500 $329,810 18,782 -7.4%
2026-06-22 20:30 2026-06-18 VCYT VERACYTE, INC. EASTHAM KARIN Director Diagnostics & Research SALE $52.89 3,729 $197,234 15,097 -19.8%
2026-06-22 20:15 2026-06-18 RDNT RadNet, Inc. SWARTZ DAVID L Director Diagnostics & Research SALE $53.89 2,699 $145,449 177,013 -1.5%
2026-06-18 20:11 2026-06-16 WGS GeneDx Holdings Corp. Feeley Kevin Officer; CHIEF FINANCIAL OFFICER Diagnostics & Research OPT+S $60.77 3,729 $226,597 39,954 -8.5%
SHOW ENTRIES

Strategic Analysis

Analyzing insider transactions within the Diagnostics & Research sector provides critical insights into institutional sentiment. When multiple executives across different companies in the same industry exhibit similar buying patterns (cluster buying), it often signals an upcoming sector-wide recovery or undervalued market conditions.

Regulatory Transparency

Our platform tracks SEC Form 4 filings in real-time. We differentiate between routine option exercises and open-market purchases to give you a clear view of "Skin in the Game". Understanding the roles of Directors vs. 10% Owners helps prioritize signals that carry the most predictive weight.

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.