Data I/O Corp

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Data I/O Corp
TickerDAIO
CIK #0000351998
CUSIP237690102
SectorLife Sciences - Instruments For Meas & Testing Of Electricity & Elec Signals
Address6464 185th Ave Ne, Suite 101, Redmond, WA 98052
Source [EDGAR]
CIK Filing 2011 - 2026
[0000351998] 10-K
[0000351998] 10-Q
[0000351998] 3
[0000351998] 4
[0000351998] 8-K
[0000351998] SC 13D
[0000351998] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Lytton Laurence W Data I/O Corp [2026-06-23] 0.0
Philotimo Fund LP Data I/O Corp [2024-01-05] 5.3
Philotimo Fund LP Data I/O Corp [2021-11-16] 6.9
Select Equity Group LP Data I/O Corp [2020-10-30] 8.5
Select Equity Group LP Data I/O Corp [2020-07-10] 8.7
DH Partners LLC Data I/O Corp [2019-11-12] 11.0
Dimensional Fund Advisors LP Data I/O Corp [2019-02-08] 5.12
DH Partners LLC Data I/O Corp [2018-11-09] 5.9
Renaissance Technologies LLC Data I/O Corp [2018-02-14] 7.99
Kanen Wealth Management LLC Data I/O Corp [2016-08-08] 19.21
Howe Kevin C Data I/O Corp [2014-04-14] 5.12
[2012-10-01] None
Form 3/4/5 Filer 2011 - 2026
Data I/O Corp
Wentworth William O
Waszak Steven M
Smith Edward J
Larson Garrett Riley
Brown Douglas Wells
Washlow Sally A
Ng Gerald Yat
Gulati Rajeev
Tidwell Michael R
Ambrose Anthony
Hatlen Joel S
Bo-Linn Cheemin
Gallenberger Mark J
Delafield John D
Howe Alan B
Crowley Brian
Kanen Wealth Management LLC
Kanen David
Bluechel Gordon Blaire
Myer Kenneth Brian
Hume Frederick R
Quist Steven M
Walker William R
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Wentworth William O
Common Stock
2025-12-03 Grant 1,100 $2.80 3,080
Waszak Steven M
Common Stock
2025-12-03 Grant 7,950 $2.79 22,180
Wentworth William O
Common Stock
2025-12-02 Grant 7,455 $2.78 20,725
Common Stock
2025-09-01 Grant 100,000 $3.15 315,000
Washlow Sally A
Common Stock
2025-05-15 Grant 20,300 $2.48 50,344
Smith Edward J
Common Stock
2025-05-15 Grant 20,300 $2.48 50,344
Larson Garrett Riley
Common Stock
2025-05-15 Grant 20,300 $2.48 50,344
Brown Douglas Wells
Common Stock
2025-05-15 Grant 20,300 $2.48 50,344
Smith Edward J
Common Stock
2025-05-07 Buy 5,000 $2.46 12,300
Wentworth William O
Common Stock
2025-05-06 Buy 10,332 $2.42 25,003
Wentworth William O
Common Stock
2025-05-02 Grant 10,585 $2.36 24,981
Common Stock
2025-05-01 Buy 10,585 $2.36 24,981
Larson Garrett Riley
Common Stock
2025-01-23 Grant 5,272 $2.91 15,342
Wentworth William O
Common Stock · derivative
2024-09-03 Grant 200,000 $2.39 478,000
Brown Douglas Wells
Common Stock
2024-08-26 Buy 3,000 $2.66 7,980
Ng Gerald Yat
Common Stack
2024-07-03 Tax withheld 5,559 $2.79 15,510
Gulati Rajeev
COMMON STOCK
2024-06-01 Grant 12,500 $2.87 35,875
Gulati Rajeev
Common Stock
2024-06-01 Tax withheld 1,482 $2.87 4,253
Gulati Rajeev
COMMON STOCK
2024-06-01 Tax withheld 1,853 $2.87 5,318
Gulati Rajeev
COMMON STOCK
2024-06-01 Tax withheld 1,976 $2.87 5,671
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 30 2,977,351
2025-12-31 27 3,348,997
2025-09-30 26 3,270,769
2025-06-30 27 3,484,133
2025-03-31 27 3,072,990
2024-12-31 30 3,145,198
2024-09-30 30 3,165,704
2024-06-30 33 3,290,120
2024-03-31 33 3,357,113
2023-12-31 31 2,862,706
2023-09-30 30 3,385,504
2023-06-30 30 3,375,912
Form 13F Holdings
Firm Period DFND Voting Shares
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