Data I/O Corporation (DAIO)
Nasdaq: DAIO · Instruments For Meas & Testing of Electricity & Elec Signals · Redmond, WA · filing with the SEC since 1995
Who owns Data I/O Corporation
As filed with the SECHolders of 5% or more
3
Red Oak Partners, LLC holds 11.2% of Common Stock, as its SCHEDULE 13G filed Oct 27, 2026 says.
Directors and officers
6
report now, of 17 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Red Oak Partners, LLC
SCHEDULE 13G · filed Oct 27, 2026 · Common Stock
Lytton Laurence W
SCHEDULE 13G · filed Jun 23, 2026 · Common Stock
Kanen David
SCHEDULE 13G/A · filed May 22, 2025 · Common Stock, no par value
Renaissance Technologies LLC
SCHEDULE 13G/A · filed Feb 12, 2026 · Common Stock · reported falling below 5%
What DAIO reports owning in othersstakes of 5% or more, and other ties
5 subsidiaries in 3 countries, from the list filed with the 10-K filed Apr 16, 2026.
Insider tradesForm 4
0sales
0purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 27, 2025 to Oct 27, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2025 runs to Oct 27, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window1 of 23 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Red Oak Partners, LLC | 10% owner | 0 | $0 | 0 | 2 | $1.0M |