Insider Buy/Sell Details for the Medical - Diagnostics & Research Industry — March 2026
Ratio0.0:1
Daily Buy & Sell Volume
Transactions (172)
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
23,179
Price
$25.28
Total Value
$585.94K
Shares Held After
71,558
% of Holdings
24.5%
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
279
Price
$26.11
Total Value
$7.28K
Shares Held After
3,336
% of Holdings
7.7%
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
279
Price
$26.11
Total Value
$7.28K
Shares Held After
3,336
% of Holdings
7.7%
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
279
Price
$26.11
Total Value
$7.28K
Shares Held After
3,336
% of Holdings
7.7%
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
282
Price
$26.11
Total Value
$7.36K
Shares Held After
3,336
% of Holdings
7.8%
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
1,160
Price
$26.11
Total Value
$30.29K
Shares Held After
43,826
% of Holdings
2.6%
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
1,357
Price
$26.11
Total Value
$35.43K
Shares Held After
51,566
% of Holdings
2.6%
CASTLE BIOSCIENCES INC (CSTL)
MAETZOLD DEREK J — Director
Shares
17,310
Price
$26.11
Total Value
$451.95K
Shares Held After
94,737
% of Holdings
15.4%
SERA PROGNOSTICS, INC. (SERA)
Boniface John J. — Chief Scientific Officer
Shares
1,517
Price
$2.04
Total Value
$3.09K
Shares Held After
145,842
% of Holdings
1.0%
SERA PROGNOSTICS, INC. (SERA)
Jackson Benjamin — General Counsel
Shares
1,027
Price
$2.04
Total Value
$2.10K
Shares Held After
114,720
% of Holdings
0.9%
SERA PROGNOSTICS, INC. (SERA)
Harrison Robert Gardner — Chief Information Officer
Shares
716
Price
$2.04
Total Value
$1.46K
Shares Held After
76,712
% of Holdings
0.9%
SERA PROGNOSTICS, INC. (SERA)
Aerts Austin — Chief Financial Officer
Shares
1,019
Price
$2.04
Total Value
$2.08K
Shares Held After
264,452
% of Holdings
0.4%
SERA PROGNOSTICS, INC. (SERA)
Lindgardt Zhenya — Director
Shares
2,973
Price
$2.04
Total Value
$6.06K
Shares Held After
738,314
% of Holdings
0.4%
SERA PROGNOSTICS, INC. (SERA)
Kearney Paul — Chief Data Officer
Shares
1,396
Price
$2.04
Total Value
$2.85K
Shares Held After
163,961
% of Holdings
0.8%
THERMO FISHER SCIENTIFIC INC. (TMO)
Shafer Michael D — Executive Vice President
Shares
1,607
Price
$499.40
Total Value
$802.54K
Shares Held After
20,950
% of Holdings
7.1%
SERA PROGNOSTICS, INC. (SERA)
Aerts Austin — Chief Financial Officer
Shares
6,069
Price
$1.90
Total Value
$11.53K
Shares Held After
265,471
% of Holdings
2.2%
SERA PROGNOSTICS, INC. (SERA)
Lindgardt Zhenya — Director
Shares
22,639
Price
$1.90
Total Value
$43.01K
Shares Held After
741,287
% of Holdings
3.0%
Natera, Inc. (NTRA)
Chapman Steven Leonard — Director
Shares
5,623
Price
$204.13
Total Value
$1.15M
Shares Held After
156,607
% of Holdings
3.5%
Natera, Inc. (NTRA)
Brophy Michael Burkes — CHIEF FINANCIAL OFFICER
Shares
785
Price
$204.13
Total Value
$160.24K
Shares Held After
63,354
% of Holdings
1.2%
Natera, Inc. (NTRA)
Fesko John — PRESIDENT, CHIEF BUS. OFFICER
Shares
707
Price
$204.13
Total Value
$144.32K
Shares Held After
189,199
% of Holdings
0.4%
Natera, Inc. (NTRA)
RABINOWITZ DANIEL — SEC. AND CHIEF LEGAL OFFICER
Shares
1,745
Price
$204.13
Total Value
$356.21K
Shares Held After
233,285
% of Holdings
0.7%
Natera, Inc. (NTRA)
Sheena Jonathan — Director
Shares
127
Price
$204.13
Total Value
$25.92K
Shares Held After
262,325
% of Holdings
0.0%
Natera, Inc. (NTRA)
Moshkevich Solomon — PRESIDENT, CLINICALDIAGNOSTICS
Shares
915
Price
$204.13
Total Value
$186.78K
Shares Held After
150,882
% of Holdings
0.6%
SERA PROGNOSTICS, INC. (SERA)
Boniface John J. — Chief Scientific Officer
Shares
3,038
Price
$1.96
Total Value
$5.95K
Shares Held After
147,359
% of Holdings
2.0%
SERA PROGNOSTICS, INC. (SERA)
Aerts Austin — Chief Financial Officer
Shares
674
Price
$1.96
Total Value
$1.32K
Shares Held After
271,540
% of Holdings
0.2%
SERA PROGNOSTICS, INC. (SERA)
Jackson Benjamin — General Counsel
Shares
3,119
Price
$1.96
Total Value
$6.11K
Shares Held After
115,747
% of Holdings
2.6%
SERA PROGNOSTICS, INC. (SERA)
Harrison Robert Gardner — Chief Information Officer
Shares
3,360
Price
$1.96
Total Value
$6.59K
Shares Held After
77,428
% of Holdings
4.2%
SERA PROGNOSTICS, INC. (SERA)
Kearney Paul — Chief Data Officer
Shares
2,026
Price
$1.96
Total Value
$3.97K
Shares Held After
165,357
% of Holdings
1.2%
MYRIAD GENETICS INC (MYGN)
Raha Samraat S. — Director
Shares
40,000
Price
$5.00
Total Value
$199.84K
Shares Held After
493,104
% of Holdings
8.1%
GRAIL, Inc. (GRAL)
Freidin Aaron — Chief Financial Officer
Shares
85
Price
$46.74
Total Value
$3.97K
Shares Held After
306,475
% of Holdings
0.0%
GRAIL, Inc. (GRAL)
Freidin Aaron — Chief Financial Officer
Shares
2,407
Price
$47.93
Total Value
$115.37K
Shares Held After
306,560
% of Holdings
0.8%
GRAIL, Inc. (GRAL)
RAGUSA ROBERT P — Director
Shares
258
Price
$46.73
Total Value
$12.06K
Shares Held After
642,084
% of Holdings
0.0%
GRAIL, Inc. (GRAL)
RAGUSA ROBERT P — Director
Shares
7,203
Price
$47.93
Total Value
$345.24K
Shares Held After
642,342
% of Holdings
1.1%
GRAIL, Inc. (GRAL)
Ofman Joshua J. — President
Shares
101
Price
$46.74
Total Value
$4.72K
Shares Held After
432,881
% of Holdings
0.0%
GRAIL, Inc. (GRAL)
Ofman Joshua J. — President
Shares
2,836
Price
$47.93
Total Value
$135.93K
Shares Held After
432,982
% of Holdings
0.7%
Twist Bioscience Corp (TWST)
Green Paula — SVP of Human Resources
Shares
935
Price
$46.43
Total Value
$43.41K
Shares Held After
124,401
% of Holdings
0.7%
Sotera Health Co (SHC)
WARBURG PINCUS & CO. — Director
Shares
15,000,000
Price
$15.27
Total Value
$229.05M
Shares Held After
19,102,952
% of Holdings
44.0%
Twist Bioscience Corp (TWST)
Cho Dennis — Senior Vice President, Chief Legal Officer & Corporate Secretary
Shares
425
Price
$46.43
Total Value
$19.73K
Shares Held After
138,257
% of Holdings
0.3%
Sotera Health Co (SHC)
WARBURG PINCUS & CO. — Director
Shares
15,000,000
Price
$15.27
Total Value
$229.05M
Shares Held After
19,102,952
% of Holdings
44.0%
Natera, Inc. (NTRA)
RABINOWITZ DANIEL — SEC. AND CHIEF LEGAL OFFICER
Shares
1,998
Price
$198.04
Total Value
$395.69K
Shares Held After
233,285
% of Holdings
0.8%
Natera, Inc. (NTRA)
RABINOWITZ DANIEL — SEC. AND CHIEF LEGAL OFFICER
Shares
1,500
Price
$196.94
Total Value
$295.41K
Shares Held After
235,283
% of Holdings
0.6%
Natera, Inc. (NTRA)
RABINOWITZ DANIEL — SEC. AND CHIEF LEGAL OFFICER
Shares
1,600
Price
$195.80
Total Value
$313.27K
Shares Held After
236,783
% of Holdings
0.7%
Natera, Inc. (NTRA)
RABINOWITZ DANIEL — SEC. AND CHIEF LEGAL OFFICER
Shares
2,900
Price
$194.77
Total Value
$564.83K
Shares Held After
238,383
% of Holdings
1.2%
Natera, Inc. (NTRA)
RABINOWITZ DANIEL — SEC. AND CHIEF LEGAL OFFICER
Shares
400
Price
$193.73
Total Value
$77.49K
Shares Held After
241,283
% of Holdings
0.2%
Sotera Health Co (SHC)
GTCR INVESTMENT XI LLC — Director
Shares
10,000,000
Price
$15.27
Total Value
$152.70M
Shares Held After
12,735,301
% of Holdings
44.0%
Twist Bioscience Corp (TWST)
WERNER ROBERT F. — Chief Accounting Officer
Shares
246
Price
$46.43
Total Value
$11.42K
Shares Held After
54,799
% of Holdings
0.4%
Twist Bioscience Corp (TWST)
Leproust Emily M. — Director
Shares
2,423
Price
$46.43
Total Value
$112.49K
Shares Held After
860,629
% of Holdings
0.3%
WATERS CORP /DE/ (WAT)
FEARON RICHARD H — Director
Shares
1,000
Price
$306.34
Total Value
$306.34K
Shares Held After
3,302
% of Holdings
30.3%
Guardant Health, Inc. (GH)
Hidalgo Medina Manuel — Director
Shares
300
Price
$91.30
Total Value
$27.39K
Shares Held After
1,193
% of Holdings
20.1%
Guardant Health, Inc. (GH)
Hidalgo Medina Manuel — Director
Shares
1,000
Price
$91.61
Total Value
$91.61K
Shares Held After
1,493
% of Holdings
40.1%
Showing 51–100 of 172 transactions (page 2 of 4)