Insider Buy/Sell Details for the Medical - Diagnostics & Research Industry — March 2026
Ratio0.1:1
Daily Buy & Sell Volume
Transactions (184)
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%
SERA PROGNOSTICS, INC. (SERA)
Lawrence Sandra AJ — Director
Shares
1,560
Price
$1.95
Total Value
$3.04K
Shares Held After
18,033
% of Holdings
8.0%
QUEST DIAGNOSTICS INC (DGX)
PREVOZNIK MICHAEL E — SVP & General Counsel
Shares
3,878
Price
$206.21
Total Value
$799.68K
Shares Held After
37,557
% of Holdings
9.4%
QUEST DIAGNOSTICS INC (DGX)
Doherty Catherine T. — EVP, Regional Businesses
Shares
5,558
Price
$206.21
Total Value
$1.15M
Shares Held After
67,122
% of Holdings
7.6%
QUEST DIAGNOSTICS INC (DGX)
Plewman Patrick — SVP for Diagnostic Services
Shares
2,855
Price
$206.21
Total Value
$588.73K
Shares Held After
15,198
% of Holdings
15.8%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
264
Price
$519.74
Total Value
$137.21K
Shares Held After
123,925
% of Holdings
0.2%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
516
Price
$519.13
Total Value
$267.87K
Shares Held After
124,189
% of Holdings
0.4%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
106
Price
$517.83
Total Value
$54.89K
Shares Held After
124,705
% of Holdings
0.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
201
Price
$516.73
Total Value
$103.86K
Shares Held After
124,811
% of Holdings
0.2%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
348
Price
$515.64
Total Value
$179.44K
Shares Held After
125,012
% of Holdings
0.3%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
570
Price
$514.71
Total Value
$293.38K
Shares Held After
125,360
% of Holdings
0.5%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
1,133
Price
$513.71
Total Value
$582.03K
Shares Held After
125,930
% of Holdings
0.9%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
411
Price
$512.73
Total Value
$210.73K
Shares Held After
127,063
% of Holdings
0.3%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
214
Price
$511.78
Total Value
$109.52K
Shares Held After
127,474
% of Holdings
0.2%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
99
Price
$509.66
Total Value
$50.46K
Shares Held After
127,688
% of Holdings
0.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
58
Price
$507.54
Total Value
$29.44K
Shares Held After
127,787
% of Holdings
0.0%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
60
Price
$505.76
Total Value
$30.35K
Shares Held After
127,845
% of Holdings
0.0%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
20
Price
$503.66
Total Value
$10.07K
Shares Held After
127,905
% of Holdings
0.0%
CASTLE BIOSCIENCES INC (CSTL)
Cole G Bradley — Director
Shares
2,655
Price
$28.51
Total Value
$75.69K
Shares Held After
19,309
% of Holdings
12.1%
CASTLE BIOSCIENCES INC (CSTL)
Cole G Bradley — Director
Shares
4,748
Price
$28.44
Total Value
$135.03K
Shares Held After
21,964
% of Holdings
17.8%
CASTLE BIOSCIENCES INC (CSTL)
Stokes Frank — Chief Financial Officer
Shares
6,001
Price
$27.98
Total Value
$167.91K
Shares Held After
60,085
% of Holdings
9.1%
GRAIL, Inc. (GRAL)
Freidin Aaron — Chief Financial Officer
Shares
655
Price
$53.01
Total Value
$34.72K
Shares Held After
308,967
% of Holdings
0.2%
GRAIL, Inc. (GRAL)
RAGUSA ROBERT P — Director
Shares
980
Price
$53.01
Total Value
$51.95K
Shares Held After
649,545
% of Holdings
0.2%
GRAIL, Inc. (GRAL)
Ofman Joshua J. — President
Shares
690
Price
$53.01
Total Value
$36.58K
Shares Held After
435,818
% of Holdings
0.2%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
118
Price
$516.75
Total Value
$60.98K
Shares Held After
123,925
% of Holdings
0.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
119
Price
$515.77
Total Value
$61.38K
Shares Held After
124,043
% of Holdings
0.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
212
Price
$514.86
Total Value
$109.15K
Shares Held After
124,162
% of Holdings
0.2%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
815
Price
$513.63
Total Value
$418.61K
Shares Held After
124,374
% of Holdings
0.7%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
1,241
Price
$512.92
Total Value
$636.53K
Shares Held After
125,189
% of Holdings
1.0%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
1,370
Price
$511.80
Total Value
$701.17K
Shares Held After
126,430
% of Holdings
1.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
678
Price
$510.71
Total Value
$346.26K
Shares Held After
127,800
% of Holdings
0.5%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
447
Price
$509.89
Total Value
$227.92K
Shares Held After
128,478
% of Holdings
0.3%
Guardant Health, Inc. (GH)
Kalia Kumud — Chief Information Officer
Shares
13,020
Price
$95.73
Total Value
$1.25M
Shares Held After
37,643
% of Holdings
25.7%
Guardant Health, Inc. (GH)
Kalia Kumud — Chief Information Officer
Shares
26,980
Price
$95.12
Total Value
$2.57M
Shares Held After
50,663
% of Holdings
34.7%
Neuronetics, Inc. (STIM)
MACAN WILLIAM ANDREW — EVP, CLO and CS
Shares
609
Price
$1.34
Total Value
$816.06
Shares Held After
879,525
% of Holdings
0.1%
QUEST DIAGNOSTICS INC (DGX)
KUPPUSAMY KARTHIK — SVP, Clinical Solutions
Shares
2,628
Price
$204.86
Total Value
$538.37K
Shares Held After
13,441
% of Holdings
16.4%
QUEST DIAGNOSTICS INC (DGX)
PREVOZNIK MICHAEL E — SVP & General Counsel
Shares
526
Price
$207.73
Total Value
$109.27K
Shares Held After
37,557
% of Holdings
1.4%
Charles River Laboratories International, Inc. (CRL)
LaPlume Joseph W — EVP, Corp Strategy & Develop
Shares
25
Price
$174.54
Total Value
$4.36K
Shares Held After
27,448
% of Holdings
0.1%
QUEST DIAGNOSTICS INC (DGX)
Doherty Catherine T. — EVP, Regional Businesses
Shares
632
Price
$207.73
Total Value
$131.29K
Shares Held After
67,122
% of Holdings
0.9%
QUEST DIAGNOSTICS INC (DGX)
Plewman Patrick — SVP for Diagnostic Services
Shares
410
Price
$207.73
Total Value
$85.17K
Shares Held After
15,198
% of Holdings
2.6%
CASTLE BIOSCIENCES INC (CSTL)
Stokes Frank — Chief Financial Officer
Shares
1,700
Price
$27.81
Total Value
$47.28K
Shares Held After
52,483
% of Holdings
3.1%
Showing 101–150 of 184 transactions (page 3 of 4)