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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: 8/4/2026 10:01:49 PM
1 Month
Buy/Sell Ratio 0.01
1%
99%
Buy
Sell
$1.68 M
($133.45) M
10 Insiders
53 Insiders
13 Transactions
84 Transactions
7/4/2026 to 8/4/2026
3 Month
Buy/Sell Ratio 0.11
9%
91%
Buy
Sell
$39.07 M
($367.40) M
94 Insiders
252 Insiders
145 Transactions
428 Transactions
5/4/2026 to 8/4/2026
6 Month
Buy/Sell Ratio 0.13
11%
89%
Buy
Sell
$94.82 M
($740.03) M
193 Insiders
405 Insiders
301 Transactions
962 Transactions
2/4/2026 to 8/4/2026
12 Month
Buy/Sell Ratio 0.19
16%
84%
Buy
Sell
$336.18 M
($1,745.40) M
315 Insiders
551 Insiders
612 Transactions
1694 Transactions
8/4/2025 to 8/4/2026
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.
$16,303,018
24
Duggan Robert W
Pulse Biosciences, Inc.
$13,508,089
2
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
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
($538,407,734)
6
Rales Mitchell P
Danaher Corp /De/
($234,561,260)
3
Rothberg Jonathan M
Butterfly Network, Inc.
($70,436,563)
34
Kanders Warren B
Cadre Holdings, Inc.
($67,353,699)
9
Wallace Richard P
Kla Corp
($40,947,000)
4
Edenbrook Capital, Llc
Frequency Electronics Inc
($37,500,005)
1
Chacon Quiros Juan Jose
Establishment Labs Holdings Inc.
($22,853,741)
9
Douglas Kevin
Imax Corp
($21,481,760)
5
Pelizzon David R
Alphatec Holdings, Inc.
($20,565,098)
5
Warden Kathy J
Northrop Grumman Corp /De/
($20,221,469)
3
Most Unique Insiders Buying (>25K)
12 months
Name
Unique insiders
Total Trades
Dentsply Sirona Inc.
9
12
Bausch & Lomb Corp
9
9
Cooper Companies, Inc.
8
10
GE HealthCare Technologies Inc.
8
8
SkyAI, Inc.
7
7
Fossil Group, Inc.
6
8
Ralliant Corp
6
7
Enovis CORP
6
6
Heartbeam, Inc.
6
6
Avantor, Inc.
5
9
Most Unique Insiders Selling (>25K)
12 months
Name
Unique insiders
Total Trades
Aehr Test Systems
13
42
MKS INC
13
36
Novocure Ltd
12
18
Alphatec Holdings, Inc.
11
38
iRhythm Holdings, Inc.
11
37
Keysight Technologies, Inc.
11
22
Garmin Ltd
11
21
Butterfly Network, Inc.
9
58
Dexcom Inc
9
23
COHERENT CORP.
9
19
Industry Summary of Insider Activity
1 Month
6 Month
12 Month
Name
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Electromedical & Electrotherapeutic Apparatus
3.88
$999,999
($257,931)
2.06
$11,377,943
($5,512,749)
1.48
$36,148,854
($24,419,933)
Surgical & Medical Instruments & Apparatus
0.05
$473,217
($9,965,295)
0.17
$48,302,171
($281,709,514)
0.28
$215,500,451
($767,150,987)
X-Ray Apparatus & Tubes & Related Irradiation Apparatus
0.00
$109,680
($73,319,466)
0.08
$6,532,816
($81,684,073)
0.19
$18,690,882
($98,655,426)
Instruments For Meas & Testing Of Electricity & Elec Signals
0.00
$0
($43,278,762)
0.00
$0
($106,970,630)
0.00
$91,945
($110,981,709)
Industrial Instruments For Measurement, Display, And Control
0.00
$0
($2,454,432)
0.04
$2,320,950
($57,712,377)
0.02
$7,707,561
($326,472,885)
Search, Detection, Navagation, Guidance, Aeronautical Sys
0.00
$0
($2,060,234)
0.02
$1,069,328
($45,424,759)
0.05
$3,259,762
($68,252,825)
Optical Instruments & Lenses
0.00
$0
($1,429,397)
0.00
$0
($42,846,700)
0.00
$0
($116,063,005)
Orthopedic, Prosthetic & Surgical Appliances & Supplies
0.00
$0
($307,142)
0.04
$1,992,660
($51,208,159)
0.04
$3,909,334
($111,657,005)
Measuring & Controlling Devices, Nec
0.00
$0
($226,000)
0.19
$1,314,250
($6,773,606)
0.03
$1,314,250
($46,688,857)
Laboratory Analytical Instruments
0.00
$0
($155,571)
0.44
$3,470,338
($7,799,885)
2.56
$27,297,873
($10,662,272)
Totalizing Fluid Meters & Counting Devices
--
$101,572
$0
2.19
$2,134,224
($974,752)
2.19
$2,134,224
($974,752)
Laboratory Apparatus & Furniture
--
$0
$0
--
$0
$0
0.00
$0
($982,642)
Auto Controls For Regulating Residential & Comml Environments
--
$0
$0
0.01
$172,176
($25,771,105)
0.01
$172,176
($25,771,105)
Dental Equipment & Supplies
--
$0
$0
--
$1,640,999
$0
1.40
$1,740,998
($1,239,708)
Ophthalmic Goods
--
$0
$0
3.78
$14,266,641
($3,778,281)
1.55
$16,795,505
($10,833,268)
Photographic Equipment & Supplies
--
$0
$0
0.00
$20,600
($21,859,040)
0.02
$401,050
($24,597,392)
Watches, Clocks, Clockwork Operated Devices/parts
--
$0
$0
--
$203,358
$0
--
$1,019,732
$0