Data I/O (DAIO): Red Oak Partners, LLC now owns 11.2% of DAIO as a passive investor 11.2%

11.2%

Stake

1.49M

Shares owned

Stake as of

Oct 20, 2026

Filed

Oct 27, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Oct 18, 2026Company filing · Form 8-K · Material agreement, Acquisition or saleCompleted buying or selling a business or assets, and signed an important agreement (and 5 more items)“Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Item 3.02 Unregistered Sales of Equity Securities.”
2. Oct 20, 2026Insider · 1 personInsiders: 2 purchases (~$1000K)

What came next

1. Oct 26, 2026Company filing · Form 8-K · Material agreement, New debtSigned an important agreement, and took on new debt or obligations (and 1 more item)
2. Oct 27, 20265% stakeRed Oak Partners, LLC reported a passive stake (13G) of 11.2%
3. Nov 12, 2026Company filing · Form 8-K · Results, Reg FDReported its results, and shared information with investors

How to read SEC Schedule 13G

A Schedule 13D and a Schedule 13G both disclose beneficial ownership of more than 5% of a US company's voting shares. A 13D is the long form, filed by holders who may seek to influence or control the company, and it must state what they intend to do. A 13G is the short form, open only to passive holders and to certain institutions holding in the ordinary course of business, and it asks no question about intent.

Full guide: Schedule 13D vs Schedule 13G: what is the difference?

What else is on file for Data I/O

For Data I/O, OQRO holds 2 insider filings (SEC Form 4 or Form 144) and 1 fund holdings report (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its DAIO page.

How this filing works

• Schedule 13D vs 13G

Other disclosures at Data I/O

• SEC Form 4Oct 27, 2026
• SEC Form 4Oct 27, 2026
• SEC Form 4May 8, 2025
• SEC Form 4May 8, 2025
• SEC Form 4May 7, 2025

Everything OQRO holds on this company is on its DAIO page.