Insider Buy/Sell Details for the Medical - Diagnostics & Research Industry — March 2026
Ratio0.1:1
Daily Buy & Sell Volume
Transactions (194)
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%
CASTLE BIOSCIENCES INC (CSTL)
Stokes Frank — Chief Financial Officer
Shares
5,300
Price
$27.32
Total Value
$144.80K
Shares Held After
54,183
% of Holdings
8.9%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
120
Price
$509.62
Total Value
$61.15K
Shares Held After
123,925
% of Holdings
0.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
759
Price
$508.95
Total Value
$386.29K
Shares Held After
124,045
% of Holdings
0.6%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
931
Price
$507.90
Total Value
$472.85K
Shares Held After
124,804
% of Holdings
0.7%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
448
Price
$506.74
Total Value
$227.02K
Shares Held After
125,735
% of Holdings
0.4%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
120
Price
$504.06
Total Value
$60.49K
Shares Held After
126,183
% of Holdings
0.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
120
Price
$502.59
Total Value
$60.31K
Shares Held After
126,303
% of Holdings
0.1%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
360
Price
$501.95
Total Value
$180.70K
Shares Held After
126,423
% of Holdings
0.3%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
382
Price
$500.55
Total Value
$191.21K
Shares Held After
126,783
% of Holdings
0.3%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
240
Price
$499.75
Total Value
$119.94K
Shares Held After
127,165
% of Holdings
0.2%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
680
Price
$498.14
Total Value
$338.74K
Shares Held After
127,405
% of Holdings
0.5%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
480
Price
$496.84
Total Value
$238.48K
Shares Held After
128,085
% of Holdings
0.4%
THERMO FISHER SCIENTIFIC INC. (TMO)
CASPER MARC N — Director
Shares
360
Price
$495.29
Total Value
$178.30K
Shares Held After
128,565
% of Holdings
0.3%
IDEXX LABORATORIES INC /DE (IDXX)
Hunt Nimrata — Executive Vice President
Shares
1,758
Price
$634.57
Total Value
$1.12M
Shares Held After
18,141
% of Holdings
8.8%
EXAGEN INC. (XGN)
ABALLI JOHN — Director
Shares
15,698
Price
$3.62
Total Value
$56.83K
Shares Held After
687,299
% of Holdings
2.2%
GRAIL, Inc. (GRAL)
Freidin Aaron — Chief Financial Officer
Shares
438
Price
$51.86
Total Value
$22.72K
Shares Held After
309,622
% of Holdings
0.1%
GRAIL, Inc. (GRAL)
Freidin Aaron — Chief Financial Officer
Shares
9,135
Price
$50.09
Total Value
$457.53K
Shares Held After
310,060
% of Holdings
2.9%
GRAIL, Inc. (GRAL)
RAGUSA ROBERT P — Director
Shares
1,717
Price
$51.84
Total Value
$89.01K
Shares Held After
650,525
% of Holdings
0.3%
GRAIL, Inc. (GRAL)
RAGUSA ROBERT P — Director
Shares
35,787
Price
$50.09
Total Value
$1.79M
Shares Held After
652,242
% of Holdings
5.2%
GRAIL, Inc. (GRAL)
Ofman Joshua J. — President
Shares
16,223
Price
$50.09
Total Value
$812.53K
Shares Held After
436,508
% of Holdings
3.6%
GRAIL, Inc. (GRAL)
Ofman Joshua J. — President
Shares
779
Price
$51.75
Total Value
$40.31K
Shares Held After
452,731
% of Holdings
0.2%
QUEST DIAGNOSTICS INC (DGX)
Davis J. E. — Director
Shares
10,000
Price
$212.52
Total Value
$2.13M
Shares Held After
117,185
% of Holdings
7.9%
Natera, Inc. (NTRA)
Chapman Steven Leonard — Director
Shares
365
Price
$201.18
Total Value
$73.43K
Shares Held After
156,607
% of Holdings
0.2%
Natera, Inc. (NTRA)
Chapman Steven Leonard — Director
Shares
2,463
Price
$200.24
Total Value
$493.19K
Shares Held After
156,972
% of Holdings
1.5%
Natera, Inc. (NTRA)
Chapman Steven Leonard — Director
Shares
1,122
Price
$199.17
Total Value
$223.47K
Shares Held After
159,435
% of Holdings
0.7%
Natera, Inc. (NTRA)
Sheena Jonathan — Director
Shares
100
Price
$202.85
Total Value
$20.29K
Shares Held After
262,194
% of Holdings
0.0%
Natera, Inc. (NTRA)
Sheena Jonathan — Director
Shares
100
Price
$201.20
Total Value
$20.12K
Shares Held After
262,294
% of Holdings
0.0%
Natera, Inc. (NTRA)
Sheena Jonathan — Director
Shares
2,400
Price
$200.42
Total Value
$481.01K
Shares Held After
262,394
% of Holdings
0.9%
Natera, Inc. (NTRA)
Sheena Jonathan — Director
Shares
470
Price
$198.50
Total Value
$93.29K
Shares Held After
264,794
% of Holdings
0.2%
Natera, Inc. (NTRA)
Moshkevich Solomon — PRESIDENT, CLINICALDIAGNOSTICS
Shares
475
Price
$200.97
Total Value
$95.46K
Shares Held After
150,023
% of Holdings
0.3%
Natera, Inc. (NTRA)
Moshkevich Solomon — PRESIDENT, CLINICALDIAGNOSTICS
Shares
1,594
Price
$200.11
Total Value
$318.97K
Shares Held After
150,498
% of Holdings
1.0%
Natera, Inc. (NTRA)
Moshkevich Solomon — PRESIDENT, CLINICALDIAGNOSTICS
Shares
931
Price
$198.83
Total Value
$185.11K
Shares Held After
152,092
% of Holdings
0.6%
Showing 151–194 of 194 transactions (page 4 of 4)