DATA I/O director receives 16,260-share stock award

Larson Garrett Riley reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Larson Garrett Riley reported acquisition or exercise transactions in this Form 4 filing.

DATA I/O CORP director Garrett Riley Larson received an equity award of 16,260 shares of Common Stock on July 8, 2026. The award is an RSU grant that vests over the earlier of 1 year or the next Annual Meeting of Shareholders. Following this grant, Larson directly holds 46,832 shares of Common Stock.

Insider Trade Summary

Grant/Award: 16,260 shares

Grant/Award 1 txn

Insider Larson Garrett Riley

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	16,260	$3.555	$58K

Holdings After Transaction: Common Stock — 46,832 shares (Direct)

Footnotes (2)

1. F1. RSU grant, vests over the earlier of 1 year or the next Annual Meeting of Shareholders.
2. F2. FMV price is the average of high low for the day.

Key Figures

RSU shares granted: 16,260 shares Fair market value per share: $3.555 per share Shares owned after grant: 46,832 shares +1 more

4 metrics

RSU shares granted 16,260 shares Equity award of Common Stock granted to director on July 8, 2026

Fair market value per share $3.555 per share Price used to value the RSU grant, defined as average of high and low for the day

Shares owned after grant 46,832 shares Total direct Common Stock holdings of Garrett Riley Larson following the transaction

RSU vesting period 1 year or next Annual Meeting Grant vests over the earlier of 1 year or the next Annual Meeting of Shareholders

Key Terms

RSU grant, Annual Meeting of Shareholders, fair market value

3 terms

RSU grant financial

"RSU grant, vests over the earlier of 1 year or the next Annual Meeting"

Annual Meeting of Shareholders regulatory

"vests over the earlier of 1 year or the next Annual Meeting of Shareholders"

A yearly gathering where a company’s owners (shareholders) vote on key items like electing the board, approving executive pay, and ratifying auditors, and receive updates on performance and strategy. Think of it as an annual town hall for owners: it matters to investors because outcomes and disclosures can affect leadership, corporate direction, dividend and governance policies, and therefore the company’s risk and potential return.

fair market value financial

"FMV price is the average of high low for the day"

The price a willing buyer and a willing seller would agree on for an asset or security when neither is under pressure and both have access to the same information. Think of it as the market’s neutral estimate of what something is worth, like the price two neighbors would settle on for a car after comparing similar listings. Investors care because fair market value guides buying and selling decisions, tax reporting, portfolio valuation, and how accurately company assets are reflected in financial statements.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did DATA I/O CORP (DAIO) director Garrett Riley Larson report in this Form 4?

Director Garrett Riley Larson reported a grant of 16,260 shares of DATA I/O CORP Common Stock as an equity award, received on July 8, 2026, increasing his direct holdings to 46,832 shares after the transaction.

What type of award did DAIO grant to director Garrett Riley Larson?

DAIO granted Garrett Riley Larson a Restricted Stock Unit (RSU) award covering 16,260 shares of Common Stock. The RSU grant is a non-cash equity compensation that converts into shares upon vesting, rather than an open-market stock purchase.

What is the vesting schedule of Garrett Riley Larson’s RSU grant at DATA I/O CORP (DAIO)?

The RSU grant to Garrett Riley Larson vests over the earlier of 1 year or the next Annual Meeting of Shareholders. This means the award becomes fully vested on whichever event occurs first, aligning director compensation with shareholder meeting timing.

What price per share was used for Garrett Riley Larson’s DAIO RSU grant?

The RSU grant used a fair market value price of $3.555 per share, defined as the average of the high and low trading prices for the day. This price is used for valuation of the equity award, not as an open-market purchase price.

How many DATA I/O CORP (DAIO) shares does Garrett Riley Larson own after this Form 4 transaction?

After the reported RSU grant, Garrett Riley Larson directly holds 46,832 shares of DAIO Common Stock. This figure reflects his total direct ownership immediately following the July 8, 2026 equity award transaction reported in the Form 4.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/10/2026 - 06:32 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Larson Garrett Riley

(Last) (First) (Middle)

6645 185TH AVE NE, #100

(Street)

REDMOND WASHINGTON 98052

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DATA I/O CORP [ DAIO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/08/2026		A		16,260(1)	A	$3.555(2)	46,832	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. RSU grant, vests over the earlier of 1 year or the next Annual Meeting of Shareholders.

2. FMV price is the average of high low for the day.

Remarks:

Annual Director's RSU Refrsh Grant July 26

	/s/ Charles J DiBona under POA for Garrett Larson	07/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)