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Subsector - Specialty Instruments
Officers
Directors
Officer & Directors
10 Percent
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All Sectors
Manufacturing
Include option trades
Include indirect trades
Latest data: 9/14/2026 10:02:20 PM
1 Month
Buy/Sell Ratio 0.01
0%
100%
Buy
Sell
$4.66 M
($532.14) M
29 Insiders
146 Insiders
49 Transactions
212 Transactions
8/14/2026 to 9/14/2026
3 Month
Buy/Sell Ratio 0.02
2%
98%
Buy
Sell
$23.75 M
($997.35) M
73 Insiders
283 Insiders
110 Transactions
496 Transactions
6/14/2026 to 9/14/2026
6 Month
Buy/Sell Ratio 0.05
4%
96%
Buy
Sell
$66.35 M
($1,315.97) M
175 Insiders
420 Insiders
282 Transactions
945 Transactions
3/14/2026 to 9/14/2026
12 Month
Buy/Sell Ratio 0.14
12%
88%
Buy
Sell
$333.00 M
($2,384.30) M
302 Insiders
595 Insiders
574 Transactions
1836 Transactions
9/14/2025 to 9/14/2026
Monthly Buy and Sell Value
Monthly Buy/Sell Ratio
Most Insider Buying
12 months
Name
Value
Transactions
Mills Andrew J.
Medline Inc.
$74,999,974
1
Mills Charles N.
Medline Inc.
$74,799,990
2
Williams Gregg
Vivani Medical, Inc.
$28,999,997
13
Casdin Partners Master Fund, L.P.
STANDARD BIOTOOLS INC.
$14,436,518
15
Duggan Robert W
Pulse Biosciences, Inc.
$12,999,988
1
Broadwood Partners, L.P.
Staar Surgical Co
$12,266,545
3
Robbins Larry
Butterfly Network, Inc.
$11,501,304
7
Desai Antal Rohit
Procept Biorobotics Corp
$10,482,943
3
Mahoney Michael F
Boston Scientific Corp
$9,001,408
1
Culp H Lawrence Jr
GE HealthCare Technologies Inc.
$5,000,076
1
Most Insider Selling
12 months
Name
Value
Transactions
Stryker Ronda E
Stryker Corp
($580,894,207)
7
Meister Keith A.
Illumina, Inc.
($436,157,160)
11
Rales Mitchell P
Danaher Corp /De/
($234,561,260)
3
Kanders Warren B
Cadre Holdings, Inc.
($73,876,300)
11
Rothberg Jonathan M
Butterfly Network, Inc.
($70,436,563)
34
Wallace Richard P
Kla Corp
($48,499,996)
4
Edenbrook Capital, Llc
Frequency Electronics Inc
($37,500,005)
1
Robbins Larry
Butterfly Network, Inc.
($34,604,217)
5
Chacon Quiros Juan Jose
Establishment Labs Holdings Inc.
($22,853,741)
9
Douglas Kevin
Imax Corp
($21,481,760)
5
Most Unique Insiders Buying (>25K)
12 months
Name
Unique insiders
Total Trades
Dentsply Sirona Inc.
9
12
Bausch & Lomb Corp
9
9
GE HealthCare Technologies Inc.
8
8
Fossil Group, Inc.
7
9
Ralliant Corp
6
6
Heartbeam, Inc.
6
6
Boston Scientific Corp
5
9
TriSalus Life Sciences, Inc.
5
9
Badger Meter Inc
5
9
Avantor, Inc.
5
8
Most Unique Insiders Selling (>25K)
12 months
Name
Unique insiders
Total Trades
Aehr Test Systems
13
53
MKS INC
13
37
Keysight Technologies, Inc.
12
25
Novocure Ltd
12
18
iRhythm Holdings, Inc.
11
37
COHERENT CORP.
11
23
Garmin Ltd
11
19
Alphatec Holdings, Inc.
10
31
Butterfly Network, Inc.
9
64
KESTRA MEDICAL TECHNOLOGIES, LTD.
9
34
Industry Summary of Insider Activity
1 Month
6 Month
12 Month
Name
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Measuring & Controlling Devices, Nec
0.17
$312,000
($1,794,192)
0.04
$312,000
($7,577,981)
0.04
$1,626,250
($36,402,906)
Watches, Clocks, Clockwork Operated Devices/parts
0.13
$40,221
($305,623)
0.80
$243,579
($305,623)
3.47
$1,059,952
($305,623)
Orthopedic, Prosthetic & Surgical Appliances & Supplies
0.04
$449,599
($11,481,700)
0.02
$1,520,811
($64,449,710)
0.02
$2,598,469
($129,193,223)
Electromedical & Electrotherapeutic Apparatus
0.04
$119,055
($3,213,710)
1.62
$10,055,990
($6,223,137)
1.33
$33,803,398
($25,460,082)
Surgical & Medical Instruments & Apparatus
0.02
$3,004,842
($163,945,233)
0.12
$39,391,080
($339,406,320)
0.25
$216,445,515
($849,761,852)
Industrial Instruments For Measurement, Display, And Control
0.01
$125,298
($15,487,027)
0.04
$2,204,922
($57,982,162)
0.03
$9,624,815
($343,625,431)
Optical Instruments & Lenses
0.00
$29,896
($7,160,630)
0.00
$79,896
($101,980,037)
0.00
$79,896
($138,403,666)
Laboratory Analytical Instruments
0.00
$573,917
($296,694,316)
0.00
$1,535,570
($451,449,920)
0.05
$24,867,333
($456,388,685)
X-Ray Apparatus & Tubes & Related Irradiation Apparatus
0.00
$7,800
($6,362,963)
0.08
$7,549,852
($100,385,544)
0.16
$19,622,315
($120,959,634)
Search, Detection, Navagation, Guidance, Aeronautical Sys
0.00
$0
($14,649,647)
0.03
$1,069,328
($30,928,704)
0.04
$3,259,762
($80,465,689)
Instruments For Meas & Testing Of Electricity & Elec Signals
0.00
$0
($5,689,466)
0.00
$98,663
($121,128,107)
0.00
$190,608
($137,337,266)
Photographic Equipment & Supplies
0.00
$0
($5,109,807)
0.00
$20,600
($26,942,360)
0.00
$57,350
($29,383,117)
Dental Equipment & Supplies
0.00
$0
($220,000)
2.81
$617,199
($220,000)
1.53
$1,740,998
($1,135,708)
Ophthalmic Goods
0.00
$0
($27,472)
0.25
$776,000
($3,045,997)
2.05
$15,715,940
($7,679,530)
Laboratory Apparatus & Furniture
--
$0
$0
--
$0
$0
0.00
$0
($982,642)
Auto Controls For Regulating Residential & Comml Environments
--
$0
$0
0.00
$0
($3,947,029)
0.01
$172,176
($25,839,584)
Totalizing Fluid Meters & Counting Devices
--
$0
$0
--
$878,708
$0
2.19
$2,134,224
($974,752)