DATA I/O CORP — Major Shareholding Notification 2025

May 22, 2025

xml version="1.0" encoding="UTF-8"? SCHEDULE 13G/A 0000921895-24-000057 Field: Pseudo-Tag; ID: Name; Data: Philotimo Fund, LP 0001688522 XXXXXXXX LIVE 1 Common Stock, no par value 05/22/2025 0000351998 DATA I/O CORP 237690102 6645 185TH AVE NE, SUITE 100 REDMOND WA 98052 Rule 13d-1(c) Philotimo Fund, LP a DE 0.00 487127.00 0.00 487127.00 487127.00 N 5.3 PN Philotimo Focused Growth & Income Fund a DE 0.00 327401.00 0.00 327401.00 327401.00 N 3.5 OO Kanen Wealth Management LLC a FL 0.00 819528.00 0.00 819528.00 819528.00 N 8.9 IA Kanen David a X1 19893.00 819528.00 19893.00 819528.00 839421.00 N 9.1 IN DATA I/O CORP 6645 185th Ave. N.E., Suite 100, Redmond, Washington 98052 This statement is filed by Philotimo Fund LP, a Delaware limited partnership ("Philotimo"), Philotimo Focused Growth & Income Fund, a series of World Funds Trust, a Delaware statutory trust ("PHLOX"), Kanen Wealth Management, LLC, a Florida limited liability company ("KWM"), and David L. Kanen. Each of the foregoing is referred to as a "Reporting Person" and collectively as the "Reporting Persons." KWM is the general partner of Philotimo and the investment manager of PHLOX and certain separately managed accounts (the "Managed Accounts"). Mr. Kanen serves as the managing member of KWM. By virtue of these relationships, KWM and Mr. Kanen may be deemed to beneficially own the shares of Common Stock, no par value per share (the "Shares"), of Data I/O Corporation (the "Issuer"), owned by each of Philotimo, PHLOX and the Managed Accounts. The principal business address of each of Philotimo, PHLOX, KWM and Mr. Kanen is 6810 Lyons Technology Circle, Suite 160, Coconut Creek, Florida 33073. Philotimo is organized under the laws of the State of Delaware. PHLOX is a series of World Funds Trust, a statutory trust organized under the laws of the State of Delaware. KWM is organized under the laws of the State of Florida. Mr. Kanen is a citizen of the United States of America. Y As of the close of business on May 22, 2025: (i) Philotimo beneficially owned 487,127 Shares; (ii) PHLOX beneficially owned 327,401 Shares; (iii) KWM beneficially owned 819,528 Shares, consisting of (a) the 487,127 Shares owned directly by Philotimo, which KWM may be deemed to beneficially own as the general partner of Philotimo, (b) the 327,401 Shares owned directly by PHLOX, which KWM may be deemed to beneficially own as the investment manager of PHLOX, and (c) the 5,000 Shares held in the Managed Accounts, which KWM may be deemed to beneficially own as the investment manager of the Managed Accounts; and (iv) Mr. Kanen beneficially owned 839,421 Shares, consisting of (a) the 19,893 Shares owned directly by Mr. Kanen, (b) the 487,127 Shares owned directly by Philotimo, which Mr. Kanen may be deemed to beneficially own as the managing member of KWM, (c) the 327,401 Shares owned directly by PHLOX, which Mr. Kanen may be deemed to beneficially own as the managing member of KWM, and (d) the 5,000 Shares held in the Managed Accounts, which Mr. Kanen may be deemed to beneficially own as the managing member of KWM. Each Reporting Person is a member of a "group" with the other Reporting Persons for the purposes of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, and such group may be deemed to beneficially own the 839,421 Shares beneficially owned in the aggregate by all the Reporting Persons, constituting approximately 9.1% of the outstanding Shares. Each Reporting Person disclaims beneficial ownership of the Shares that he or it does not directly own. The aggregate percentage of the Shares reported owned by each person named herein is based upon 9,239,731 Shares outstanding as of April 30, 2025, which is the total number of Shares outstanding as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 13, 2025. As of the close of business on May 22, 2025: (i) Philotimo beneficially owned approximately 5.3% of the outstanding Shares; (ii) PHLOX beneficially owned approximately 3.5% of the outstanding Shares; (iii) KWM beneficially owned approximately 8.9% of the outstanding Shares; and (iv) Mr. Kanen beneficially owned approximately 9.1% of the outstanding Shares. See Cover Pages Items 5-9. See Cover Pages Items 5-9. See Cover Pages Items 5-9. See Cover Pages Items 5-9. Y Y Y N See Exhibit 99.1 to the Schedule 13G filed by the Reporting Persons with the Securities and Exchange Commission on January 5, 2024. Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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. Philotimo Fund, LP /s/ David L. Kanen David L. Kanen, Managing Member of Kanen Wealth Management, LLC, its general partner 05/22/2025 Philotimo Focused Growth & Income Fund /s/ David L. Kanen David L. Kanen, Managing Member of Kanen Wealth Management, LLC, its investment manager 05/22/2025 Kanen Wealth Management LLC /s/ David L. Kanen David L. Kanen, Managing Member 05/22/2025 Kanen David /s/ David L. Kanen David L. Kanen 05/22/2025