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Industry - Medical Laboratories
Officers
Directors
Officer & Directors
10 Percent
All
All Sectors
Services
Health Services
Include option trades
Include indirect trades
Latest data: 7/31/2026 10:01:43 PM
1 Month
Buy/Sell Ratio 0.00
0%
100%
Buy
Sell
--
($14.14) M
0 Insiders
12 Insiders
0 Transactions
23 Transactions
6/30/2026 to 7/31/2026
3 Month
Buy/Sell Ratio 0.08
7%
93%
Buy
Sell
$6.99 M
($83.52) M
7 Insiders
47 Insiders
13 Transactions
94 Transactions
4/30/2026 to 7/31/2026
6 Month
Buy/Sell Ratio 0.08
7%
93%
Buy
Sell
$12.45 M
($152.35) M
7 Insiders
70 Insiders
14 Transactions
189 Transactions
1/31/2026 to 7/31/2026
12 Month
Buy/Sell Ratio 0.05
4%
96%
Buy
Sell
$13.65 M
($298.98) M
15 Insiders
93 Insiders
24 Transactions
415 Transactions
7/31/2025 to 7/31/2026
Monthly Buy and Sell Value
Monthly Buy/Sell Ratio
Most Insider Buying
12 months
Name
Value
Transactions
Han Yusheng
Burning Rock Biotech Ltd
$11,648,315
8
Vacirca Jeff L
Caris Life Sciences, Inc.
$501,426
1
Johnson Nancy Joann
Billiontoone, Inc.
$414,000
1
Neupert Peter M
Fortrea Holdings Inc.
$407,150
2
Brodnax Brett
Lumexa Imaging Holdings, Inc.
$253,750
1
Rai Akshay
Billiontoone, Inc.
$150,000
1
Russell Erin L
Fortrea Holdings Inc.
$100,018
1
Tsao David
Billiontoone, Inc.
$60,000
1
Ten Bosch John Roderick
Billiontoone, Inc.
$48,000
1
Ness Brent
Aclarion, Inc.
$20,061
2
Most Insider Selling
12 months
Name
Value
Transactions
Chapman Steven Leonard
Natera, Inc.
($40,781,504)
17
Rabinowitz Matthew
Natera, Inc.
($38,765,387)
9
Eltoukhy Helmy
Guardant Health, Inc.
($27,238,215)
2
Rabinowitz Daniel
Natera, Inc.
($17,167,769)
13
Moshkevich Solomon
Natera, Inc.
($15,406,549)
25
Rosenman Herm
Natera, Inc.
($15,143,977)
2
Ragusa Robert P
GRAIL, Inc.
($12,763,744)
6
Ofman Joshua J.
GRAIL, Inc.
($12,425,060)
10
Sheena Jonathan
Natera, Inc.
($9,675,890)
22
Fesko John
Natera, Inc.
($7,276,579)
15
Most Unique Insiders Buying (>25K)
12 months
Name
Unique insiders
Total Trades
Billiontoone, Inc.
4
4
Fortrea Holdings Inc.
2
3
Burning Rock Biotech Ltd
1
8
Caris Life Sciences, Inc.
1
1
Lumexa Imaging Holdings, Inc.
1
1
Most Unique Insiders Selling (>25K)
12 months
Name
Unique insiders
Total Trades
Guardant Health, Inc.
11
23
Natera, Inc.
10
121
Veracyte, Inc.
10
29
Radnet, Inc.
9
17
Quest Diagnostics Inc
8
17
LABCORP HOLDINGS INC.
7
12
Exact Sciences Corp
5
8
Castle Biosciences Inc
4
36
GRAIL, Inc.
4
24
Caredx, Inc.
4
14
Companies with activity
1 Month
6 Month
12 Month
Name
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Natera, Inc.
0.00
$0
($11,095,240)
0.00
$0
($95,402,502)
0.00
$0
($152,087,665)
Billiontoone, Inc.
0.00
$0
($2,455,014)
0.00
$0
($5,100,637)
0.13
$678,000
($5,100,637)
Quest Diagnostics Inc
0.00
$0
($376,288)
0.00
$0
($8,558,822)
0.00
$0
($9,789,714)
Castle Biosciences Inc
0.00
$0
($209,650)
0.00
$0
($2,533,242)
0.00
$0
($9,146,045)
Caredx, Inc.
--
$0
$0
0.00
$0
($1,927,791)
0.00
$0
($2,769,725)
Guardant Health, Inc.
--
$0
$0
0.00
$0
($7,021,372)
0.00
$0
($42,516,511)
LABCORP HOLDINGS INC.
--
$0
$0
0.00
$0
($5,596,192)
0.00
$0
($10,393,403)
Fulgent Genetics, Inc.
--
$0
$0
0.00
$0
($106,343)
0.00
$0
($681,473)
Veracyte, Inc.
--
$0
$0
0.00
$0
($5,278,126)
0.00
$0
($9,629,850)
Sera Prognostics, Inc.
--
$0
$0
0.00
$0
($194,471)
0.00
$0
($764,390)
Exagen Inc.
--
$0
$0
0.00
$0
($103,807)
0.00
$0
($679,768)
Radnet, Inc.
--
$0
$0
0.00
$0
($4,849,677)
0.00
$0
($22,401,155)
Aclarion, Inc.
--
$0
$0
--
$50,915
$0
--
$50,977
$0
Burning Rock Biotech Ltd
--
$0
$0
--
$11,648,315
$0
--
$11,648,315
$0
Fortrea Holdings Inc.
--
$0
$0
0.00
$0
($105,497)
4.81
$507,168
($105,497)
GRAIL, Inc.
--
$0
$0
0.00
$0
($15,575,732)
0.00
$0
($30,842,008)
Caris Life Sciences, Inc.
--
$0
$0
--
$501,426
$0
--
$510,966
$0
Lumexa Imaging Holdings, Inc.
--
$0
$0
--
$253,750
$0
--
$253,750
$0
Personalis, Inc.
--
$0
$0
--
$0
$0
0.00
$0
($266,212)
Exact Sciences Corp
--
$0
$0
--
$0
$0
0.00
$0
($1,802,808)