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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: 3/20/2026 10:04:43 PM
1 Month
Buy/Sell Ratio 0.28
21%
79%
Buy
Sell
$39.75 M
($143.67) M
58 Insiders
174 Insiders
77 Transactions
282 Transactions
2/20/2026 to 3/20/2026
3 Month
Buy/Sell Ratio 0.13
11%
89%
Buy
Sell
$55.89 M
($419.66) M
101 Insiders
265 Insiders
147 Transactions
514 Transactions
12/20/2025 to 3/20/2026
6 Month
Buy/Sell Ratio 0.24
19%
81%
Buy
Sell
$265.98 M
($1,117.53) M
166 Insiders
379 Insiders
292 Transactions
912 Transactions
9/20/2025 to 3/20/2026
12 Month
Buy/Sell Ratio 0.17
14%
86%
Buy
Sell
$308.88 M
($1,828.37) M
287 Insiders
532 Insiders
671 Transactions
1594 Transactions
3/20/2025 to 3/20/2026
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.
$22,267,273
24
Casdin Partners Master Fund, L.P.
STANDARD BIOTOOLS INC.
$16,303,018
24
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
Mehra Sanjeev K
Avantor, Inc.
$4,882,750
2
Summe Gregory L
Avantor, Inc.
$4,561,500
7
Hunn Laurence Neil
Roper Technologies Inc
$4,522,310
1
Most Insider Selling
12 months
Name
Value
Transactions
Stryker Ronda E
Stryker Corp
($517,006,913)
6
Rales Steven M
Danaher Corp /De/
($245,919,391)
1
Rales Mitchell P
Danaher Corp /De/
($234,561,260)
3
Kanders Warren B
Cadre Holdings, Inc.
($74,036,949)
14
Wallace Richard P
Kla Corp
($30,246,754)
3
Warden Kathy J
Northrop Grumman Corp /De/
($25,870,994)
5
Kingsley Lawrence D
Mirion Technologies, Inc.
($24,775,550)
4
Douglas Kevin
Imax Corp
($21,481,760)
5
Pelizzon David R
Alphatec Holdings, Inc.
($20,565,098)
5
Bose Arani
Penumbra Inc
($19,060,733)
6
Most Unique Insiders Buying (>25K)
12 months
Name
Unique insiders
Total Trades
Bausch & Lomb Corp
9
10
Cooper Companies, Inc.
8
10
Avantor, Inc.
7
14
Sharps Technology Inc.
7
7
Ralliant Corp
6
7
Fossil Group, Inc.
6
6
Enovis CORP
6
6
Envoy Medical, Inc.
5
6
Teleflex Inc
5
5
Senseonics Holdings, Inc.
4
5
Most Unique Insiders Selling (>25K)
12 months
Name
Unique insiders
Total Trades
Axogen, Inc.
12
19
Alphatec Holdings, Inc.
11
48
MKS INC
11
23
COHERENT CORP.
11
19
Keysight Technologies, Inc.
10
21
Itron, Inc.
9
47
Butterfly Network, Inc.
9
34
Trimble Inc.
9
29
Leonardo DRS, Inc.
9
18
Garmin Ltd
9
17
Industry Summary of Insider Activity
1 Month
6 Month
12 Month
Name
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Ophthalmic Goods
6.67
$13,340,913
($1,999,431)
3.45
$14,939,940
($4,332,255)
1.64
$16,287,502
($9,937,631)
Laboratory Analytical Instruments
1.38
$1,714,635
($1,244,191)
4.79
$23,663,367
($4,938,766)
4.69
$33,368,531
($7,109,107)
Measuring & Controlling Devices, Nec
0.60
$1,314,250
($2,192,636)
0.05
$1,314,250
($27,684,644)
0.03
$1,488,484
($59,267,870)
Electromedical & Electrotherapeutic Apparatus
0.58
$1,684,733
($2,918,420)
1.20
$23,011,939
($19,200,138)
1.11
$29,571,375
($26,702,467)
Surgical & Medical Instruments & Apparatus
0.45
$19,234,001
($42,688,008)
0.35
$176,937,734
($510,463,370)
0.26
$196,017,557
($750,688,317)
Industrial Instruments For Measurement, Display, And Control
0.08
$1,170,865
($14,070,186)
0.03
$7,437,003
($293,181,231)
0.02
$9,194,398
($563,842,260)
Orthopedic, Prosthetic & Surgical Appliances & Supplies
0.06
$261,960
($4,742,570)
0.02
$1,091,630
($64,777,622)
0.04
$4,410,014
($101,955,677)
Search, Detection, Navagation, Guidance, Aeronautical Sys
0.00
$0
($26,308,736)
0.03
$2,190,435
($70,776,805)
0.02
$2,190,435
($115,979,068)
Photographic Equipment & Supplies
0.00
$0
($21,481,760)
0.00
$36,750
($23,266,517)
0.01
$380,450
($26,982,989)
Auto Controls For Regulating Residential & Comml Environments
0.00
$0
($17,094,469)
0.00
$0
($21,892,555)
0.00
$0
($21,892,555)
X-Ray Apparatus & Tubes & Related Irradiation Apparatus
0.00
$0
($3,840,418)
0.59
$12,072,463
($20,574,090)
0.57
$12,458,826
($21,753,969)
Optical Instruments & Lenses
0.00
$0
($3,085,913)
0.00
$0
($37,368,135)
0.00
$0
($94,608,765)
Instruments For Meas & Testing Of Electricity & Elec Signals
0.00
$0
($1,494,759)
0.01
$91,945
($16,261,090)
0.01
$255,428
($23,532,222)
Totalizing Fluid Meters & Counting Devices
0.00
$0
($506,838)
1.29
$1,255,516
($974,752)
1.01
$1,255,516
($1,241,626)
Dental Equipment & Supplies
--
$1,023,799
$0
1.23
$1,123,799
($915,708)
0.91
$1,123,799
($1,239,708)
Laboratory Apparatus & Furniture
--
$0
$0
0.00
$0
($917,602)
0.04
$57,500
($1,633,937)
Watches, Clocks, Clockwork Operated Devices/parts
--
$0
$0
--
$816,374
$0
--
$816,374
$0