Renaissance reports 4.66% Data I/O (DAIO) ownership stake

Rhea-AI Filing Summary

Renaissance Technologies LLC and Renaissance Technologies Holdings Corporation report beneficial ownership of 437,637 shares of Data I/O Corp common stock, representing 4.66% of the class as of 12/31/2025. They have sole voting and dispositive power over these shares.

The firms state the securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of Data I/O Corp. Certain funds managed by Renaissance Technologies LLC are entitled to receive dividends and sale proceeds from these shares.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 7)

DATA I/O CORP

(Name of Issuer)

Common Stock

(Title of Class of Securities)

237690102

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 237690102

1

Names of Reporting Persons

Renaissance Technologies LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 437,637.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 437,637.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

437,637.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.66 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP No. 237690102

1

Names of Reporting Persons

Renaissance Technologies Holdings Corporation

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 437,637.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 437,637.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

437,637.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.66 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: DATA I/O CORP
(b)	Address of issuer's principal executive offices: 6645 185TH AVE NE, SUITE 100, REDMOND, WA 98052
Item 2.
(a)	Name of person filing: This Schedule 13G is being filed by Renaissance Technologies LLC ("RTC") and Renaissance Technologies Holdings Corporation ("RTHC").
(b)	Address or principal business office or, if none, residence: 800 Third Avenue New York, New York 10022
(c)	Citizenship: RTC is a Delaware limited liability company, and RTHC is a Delaware corporation.
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 237690102
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 437637
(b)	Percent of class: 4.66 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 437637
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 437637
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Certain funds managed by RTC have the right to receive dividends and proceeds from the sale of the securities which are the subject of this report.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Renaissance Technologies LLC

Signature:	Brian Felczak
Name/Title:	Chief Financial Officer
Date:	02/12/2026

Renaissance Technologies Holdings Corporation

Signature:	Brian Felczak
Name/Title:	Vice President
Date:	02/12/2026

Exhibit Information

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, each of the undersigned agrees to the filing on behalf of each of a Statement on Schedule 13G, and all amendments thereto, with respect to the shares of Common Stock of DATA I/O CORP.

FAQ

What ownership stake in Data I/O Corp (DAIO) does Renaissance report?

Renaissance reports beneficial ownership of 437,637 Data I/O Corp shares, equal to 4.66% of the common stock. The filing shows sole voting and dispositive power over these shares, indicating direct control over how they are voted and whether they are sold or held.

Which Renaissance entities are listed as reporting persons for DAIO?

The reporting persons are Renaissance Technologies LLC and Renaissance Technologies Holdings Corporation. Both entities are organized in Delaware and jointly file this Schedule 13G/A, reflecting their beneficial ownership and control over voting and disposition of the reported Data I/O Corp common shares.

Why did Renaissance file this Schedule 13G/A for Data I/O Corp?

The Schedule 13G/A was filed because Renaissance’s beneficial ownership reached a reportable level, here 4.66% of the class. The amendment updates prior disclosures and confirms current holdings and control characteristics as of the 12/31/2025 event date for Data I/O Corp common stock.

Is Renaissance seeking to influence control of Data I/O Corp (DAIO)?

Renaissance states the shares were acquired and are held in the ordinary course of business, not to influence control. The certification explicitly disclaims any purpose or effect of changing control, other than activities solely related to a nomination under the referenced SEC proxy rule.

Who receives dividends and sale proceeds from Renaissance’s DAIO shares?

Certain funds managed by Renaissance Technologies LLC have the right to receive dividends and sale proceeds from the reported shares. The filing explains that these managed funds, rather than the manager alone, economically benefit from distributions and any sales of Data I/O Corp common stock.

What voting power does Renaissance have over its Data I/O Corp shares?

Renaissance reports sole voting power over all 437,637 shares of Data I/O Corp common stock. It also reports sole dispositive power over the same number of shares, indicating it alone directs how the shares are voted and whether they are sold or retained.