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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: 10/28/2026 10:01:44 PM
1 Month
Buy/Sell Ratio 0.03
2%
98%
Buy
Sell
$684,468
($26.39) M
8 Insiders
39 Insiders
9 Transactions
45 Transactions
9/28/2026 to 10/28/2026
3 Month
Buy/Sell Ratio 0.03
2%
98%
Buy
Sell
$22.89 M
($911.72) M
80 Insiders
268 Insiders
121 Transactions
458 Transactions
7/28/2026 to 10/28/2026
6 Month
Buy/Sell Ratio 0.05
4%
96%
Buy
Sell
$62.14 M
($1,264.95) M
155 Insiders
393 Insiders
266 Transactions
858 Transactions
4/28/2026 to 10/28/2026
12 Month
Buy/Sell Ratio 0.13
11%
89%
Buy
Sell
$309.56 M
($2,425.17) M
304 Insiders
595 Insiders
562 Transactions
1823 Transactions
10/28/2025 to 10/28/2026
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.
$18,616,665
10
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
Mehra Sanjeev K
Avantor, Inc.
$4,882,750
2
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
($60,878,622)
5
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
Cooper Companies, Inc.
7
10
Fossil Group, Inc.
7
9
Heartbeam, Inc.
6
6
Ralliant Corp
6
6
TriSalus Life Sciences, Inc.
5
9
Boston Scientific Corp
5
9
Badger Meter Inc
5
9
Most Unique Insiders Selling (>25K)
12 months
Name
Unique insiders
Total Trades
MKS INC
13
33
Keysight Technologies, Inc.
13
27
Aehr Test Systems
12
52
Novocure Ltd
12
18
iRhythm Holdings, Inc.
11
37
KESTRA MEDICAL TECHNOLOGIES, LTD.
11
37
COHERENT CORP.
11
23
Garmin Ltd
11
19
Alphatec Holdings, Inc.
10
27
Butterfly Network, Inc.
9
68
Industry Summary of Insider Activity
1 Month
6 Month
12 Month
Name
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Orthopedic, Prosthetic & Surgical Appliances & Supplies
0.05
$499,998
($9,635,597)
0.04
$2,006,837
($54,527,633)
0.02
$3,098,467
($134,969,689)
Surgical & Medical Instruments & Apparatus
0.03
$160,960
($4,887,841)
0.11
$38,626,658
($339,826,304)
0.25
$216,691,621
($850,142,602)
X-Ray Apparatus & Tubes & Related Irradiation Apparatus
0.03
$11,250
($447,063)
0.08
$7,613,302
($99,848,073)
0.16
$19,685,765
($121,466,564)
Electromedical & Electrotherapeutic Apparatus
0.00
$12,260
($5,750,320)
0.37
$5,953,117
($16,173,416)
0.67
$22,710,087
($33,708,933)
Instruments For Meas & Testing Of Electricity & Elec Signals
0.00
$0
($3,482,064)
0.00
$148,463
($90,506,358)
0.00
$240,407
($147,202,790)
Industrial Instruments For Measurement, Display, And Control
0.00
$0
($1,092,390)
0.04
$2,177,244
($48,530,674)
0.03
$9,624,815
($344,207,232)
Measuring & Controlling Devices, Nec
0.00
$0
($600,000)
0.11
$312,000
($2,768,807)
0.05
$1,626,250
($30,417,766)
Ophthalmic Goods
0.00
$0
($415,500)
0.78
$2,656,109
($3,418,368)
2.24
$17,459,269
($7,793,752)
Laboratory Analytical Instruments
0.00
$0
($78,210)
0.00
$665,312
($458,550,240)
0.02
$9,921,937
($464,711,713)
Search, Detection, Navagation, Guidance, Aeronautical Sys
--
$0
$0
0.04
$1,069,328
($28,078,373)
0.04
$3,259,762
($79,723,656)
Laboratory Apparatus & Furniture
--
$0
$0
--
$0
$0
0.00
$0
($293,168)
Auto Controls For Regulating Residential & Comml Environments
--
$0
$0
0.00
$0
($68,479)
0.01
$172,176
($25,839,584)
Totalizing Fluid Meters & Counting Devices
--
$0
$0
--
$101,572
$0
2.19
$2,134,224
($974,752)
Optical Instruments & Lenses
--
$0
$0
0.00
$29,896
($116,663,312)
0.00
$79,896
($153,552,316)
Dental Equipment & Supplies
--
$0
$0
2.81
$617,199
($220,000)
1.53
$1,740,998
($1,135,708)
Photographic Equipment & Supplies
--
$0
$0
0.00
$20,600
($5,460,600)
0.00
$57,350
($28,727,117)
Watches, Clocks, Clockwork Operated Devices/parts
--
$0
$0
0.46
$140,951
($305,623)
3.47
$1,059,952
($305,623)