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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: 5/4/2026 10:05:48 PM
1 Month
Buy/Sell Ratio 0.06
6%
94%
Buy
Sell
$4.48 M
($69.97) M
21 Insiders
46 Insiders
21 Transactions
86 Transactions
4/4/2026 to 5/4/2026
3 Month
Buy/Sell Ratio 0.14
12%
88%
Buy
Sell
$55.23 M
($382.23) M
111 Insiders
271 Insiders
148 Transactions
530 Transactions
2/4/2026 to 5/4/2026
6 Month
Buy/Sell Ratio 0.25
19%
81%
Buy
Sell
$261.32 M
($1,046.81) M
184 Insiders
396 Insiders
301 Transactions
960 Transactions
11/4/2025 to 5/4/2026
12 Month
Buy/Sell Ratio 0.16
14%
86%
Buy
Sell
$310.73 M
($1,885.21) M
295 Insiders
548 Insiders
624 Transactions
1658 Transactions
5/4/2025 to 5/4/2026
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.
$24,012,867
13
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
Hunn Laurence Neil
Roper Technologies Inc
$4,522,310
1
Summe Gregory L
Avantor, Inc.
$4,249,000
6
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.
($78,820,949)
15
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
Regnery David S
Trane Technologies Plc
($18,266,088)
3
Most Unique Insiders Buying (>25K)
12 months
Name
Unique insiders
Total Trades
Bausch & Lomb Corp
9
10
Cooper Companies, Inc.
8
10
Sharps Technology Inc.
7
7
Ralliant Corp
6
7
Fossil Group, Inc.
6
7
Heartbeam, Inc.
6
6
Enovis CORP
6
6
Badger Meter Inc
5
8
Envoy Medical, Inc.
5
6
Teleflex Inc
5
5
Most Unique Insiders Selling (>25K)
12 months
Name
Unique insiders
Total Trades
Aehr Test Systems
12
40
Axogen, Inc.
12
19
Alphatec Holdings, Inc.
11
47
MKS INC
11
23
COHERENT CORP.
11
20
Keysight Technologies, Inc.
10
24
Itron, Inc.
9
47
Butterfly Network, Inc.
9
35
Trimble Inc.
9
29
Leonardo DRS, Inc.
9
17
Industry Summary of Insider Activity
1 Month
6 Month
12 Month
Name
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Ratio
Buy $
Sell $
Electromedical & Electrotherapeutic Apparatus
7.42
$2,010,399
($270,890)
0.96
$17,115,928
($17,806,406)
1.28
$30,911,053
($24,141,802)
X-Ray Apparatus & Tubes & Related Irradiation Apparatus
0.31
$556,200
($1,768,566)
0.58
$12,628,663
($21,731,447)
0.57
$13,015,026
($22,728,927)
Surgical & Medical Instruments & Apparatus
0.16
$1,124,200
($7,210,054)
0.36
$178,020,787
($500,806,290)
0.26
$195,886,201
($747,781,618)
Industrial Instruments For Measurement, Display, And Control
0.10
$10,569
($101,097)
0.04
$7,447,572
($165,826,096)
0.02
$9,204,967
($565,221,495)
Instruments For Meas & Testing Of Electricity & Elec Signals
0.00
$0
($40,530,525)
0.00
$91,945
($56,696,432)
0.00
$196,363
($62,338,323)
Orthopedic, Prosthetic & Surgical Appliances & Supplies
0.00
$0
($12,963,291)
0.01
$1,091,630
($85,803,089)
0.04
$4,356,754
($121,091,724)
Auto Controls For Regulating Residential & Comml Environments
0.00
$0
($3,878,550)
0.00
$0
($25,771,105)
0.00
$0
($25,771,105)
Search, Detection, Navagation, Guidance, Aeronautical Sys
0.00
$0
($1,219,660)
0.03
$2,190,435
($71,622,918)
0.02
$2,190,435
($117,030,349)
Measuring & Controlling Devices, Nec
0.00
$0
($1,194,073)
0.05
$1,314,250
($27,931,237)
0.02
$1,488,484
($60,850,347)
Optical Instruments & Lenses
0.00
$0
($702,000)
0.00
$0
($37,553,510)
0.00
$0
($90,256,003)
Laboratory Analytical Instruments
0.00
$0
($130,208)
4.11
$22,507,078
($5,478,696)
4.40
$32,760,183
($7,437,192)
Totalizing Fluid Meters & Counting Devices
--
$777,136
$0
2.09
$2,032,652
($974,752)
1.64
$2,032,652
($1,241,626)
Laboratory Apparatus & Furniture
--
$0
$0
0.00
$0
($293,168)
0.00
$0
($1,158,421)
Dental Equipment & Supplies
--
$0
$0
1.23
$1,123,799
($915,708)
0.91
$1,123,799
($1,239,708)
Ophthalmic Goods
--
$0
$0
3.42
$14,803,160
($4,332,255)
1.64
$16,267,577
($9,937,631)
Photographic Equipment & Supplies
--
$0
$0
0.00
$36,750
($23,266,517)
0.01
$380,450
($26,984,230)
Watches, Clocks, Clockwork Operated Devices/parts
--
$0
$0
--
$919,001
$0
--
$919,001
$0