Data I/O (NASDAQ: DAIO) delays 10-K filing; preliminary results Feb 27

Rhea-AI Filing Summary

Data I/O Corporation notified the SEC it could not timely file its Annual Report on Form 10-K for the period ended December 31, 2025 and expects to file the Form 10-K no later than April 15, 2026. The delay reflects additional time needed to finalize consolidated financial statements, including revenue disclosures and accounting for income taxes. The company previously furnished a press release with preliminary unaudited results as Exhibit 99.0 to a Form 8-K on February 27, 2026; those preliminary results remain subject to change pending completion of the audit.

Key Figures

Fiscal period end: December 31, 2025 Original Form 12b-25 filed: March 31, 2026 Expected Form 10-K filing date: April 15, 2026 +2 more

5 metrics

Fiscal period end December 31, 2025 Period covered by the delayed Form 10-K

Original Form 12b-25 filed March 31, 2026 Date of the Original Form 12b-25 referenced in the amendment

Expected Form 10-K filing date April 15, 2026 Target date stated for filing the Annual Report on Form 10-K

Preliminary results furnished February 27, 2026 Date the company furnished a press release with preliminary unaudited results as Exhibit 99.0 to Form 8-K

Registrant phone 425-881-6444 Contact number listed for Charles J. DiBona

Key Terms

Form 12b-25, preliminary unaudited financial results, consolidated financial statements

3 terms

Form 12b-25 regulatory

"This Amendment No. 1 to Form 12b-25 amends the Form 12b-25 originally filed"

Form 12b-25 is a notice a publicly traded company files with the U.S. Securities and Exchange Commission when it cannot deliver a required periodic report (like a quarterly or annual financial report) on time. It explains the reason for the delay and gives the company a short, temporary window to finish the report without being marked as delinquent; investors watch it because late filings can signal accounting, operational, or control issues that may affect a company’s reliability and stock risk, much like a missed homework deadline can raise concerns about a student’s preparedness.

preliminary unaudited financial results financial

"The Company furnished a press release reporting certain preliminary unaudited results"

consolidated financial statements financial

"finalize its consolidated financial statements for the year ended December 31, 2025"

Consolidated financial statements combine the financial results of a parent company and all the companies it controls into one set of reports, like showing the whole family’s budget instead of each person’s separate accounts. For investors this matters because it gives a complete picture of assets, debts, revenue and cash flow across the entire group, helping assess true size, risk and profitability without missing or double-counting related activity.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 12b-25/A

(Amendment No. 1)

NOTIFICATION OF LATE FILING

(Check one):	☒     Form 10-K        ☐     Form 20-F        ☐     Form 11-K        ☐     Form 10-Q        ☐     Form 10-D        ☐     Form N-SAR ☐     Form N-CSR        ☐     Form 6-K
	For Period Ended: December 31, 2025
	☐     Transition Report on Form 10-K
	☐     Transition Report on Form 20-F
	☐     Transition Report on Form 11-K
	☐     Transition Report on Form 10-Q
	☐     Transition Report on Form N-SAR
	For the Transition Period Ended: __________________________

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

PART I — REGISTRANT INFORMATION

Data I/O Corporation

Full Name of Registrant

Former Name if Applicable

6645 185th Ave. N.E., Suite 100

Address of Principal Executive Office (Street and Number)

Redmond, WA  98052

City, State and Zip Code

Explanatory Note

This Amendment No. 1 to Form 12b‑25 amends the Form 12b‑25 originally filed by Data I/O Corporation on March 31, 2026 (the “Original Form 12b‑25”). This amendment updates and supplements the disclosure in Part III of the Original Form 12b‑25. Except as described herein, the Original Form 12b‑25 is restated in its entirety.

PART II — RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

		(a)	The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense.
☒		(b)	The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and
		(c)	The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

PART III — NARRATIVE

State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

Data I/O Corporation (the “Registrant”) was unable, without unreasonable effort or expense, to file its Annual Report on Form 10-K for the period ended December 31, 2025, by March 31, 2026 because extra time is needed to review and finalize its consolidated financial statements for the year ended December 31, 2025 including finalizing revenue related disclosures and accounting for income taxes.

The Registrant expects to file the Form 10-K no later than April 15, 2026.

PART IV — OTHER INFORMATION

(1) Name and telephone number of person to contact in regard to this notification

	Charles J. DiBona		425		881-6444
	(Name)		(Area Code)		(Telephone Number)

(2)	Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If answer is no, identify report(s).
	Yes ☒     No ☐

(3)	Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?
	Yes ☒     No ☐
	As disclosed above, the Company’s accounting staff requires additional time to finalize the audited financial statements for the year ended December 31, 2025.  The Company furnished a press release reporting certain preliminary unaudited results for the year ended December 31, 2025 as Exhibit 99.0 to its Form 8-K furnished on February 27, 2026. The preliminary unaudited financial results are subject to change pending the completion of Form 10-K for the year ended December 31, 2025.  Actual results may differ from the preliminary financial results and other information presented in the press release and contained in this Form 12b-25 due to the completion of our internal procedures, the audit of our financial statements, final adjustments and other developments that may arise between now and the time the results are finalized.

2

Data I/O Corporation

(Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.

Date	April 7, 2026		By:	/s/ Charles J. DiBona
				Charles J. DiBona Chief Financial Officer

3

FAQ

Why did Data I/O (DAIO) file an amended Form 12b-25?

Because the company needed extra time to finalize audited 2025 financial statements. The amendment states additional work on revenue disclosures and income tax accounting is required before filing the Form 10-K.

When does DAIO expect to file its 2025 Form 10-K?

Data I/O expects to file the Form 10-K no later than April 15, 2026. That date is provided verbatim in the amendment as the target filing date.

Has Data I/O already disclosed any 2025 results?

Yes. The company furnished a press release with preliminary unaudited results as Exhibit 99.0 to a Form 8-K on February 27, 2026. Those preliminary figures are subject to change after audit completion.

Does the amendment say the delay was due to cost or effort constraints?

The amendment states the report could not be filed "without unreasonable effort or expense." It explains the accounting staff needs extra time to complete internal procedures and audit adjustments.

Will the preliminary results change after the audit?

Possibly. The amendment notes the preliminary unaudited results are subject to change pending completion of the Form 10-K, audit adjustments and other developments occurring before finalization.