Red Oak Partners, LLC and affiliated entities filed a Form 4 with the SEC on October 27, 2026, disclosing purchases of Data I/O Corp common stock and 5% Convertible Debentures on October 20, 2026, through two affiliated limited partnerships.

Key Highlights

  • Common stock purchase by the Fund: The Red Oak Fund, LP acquired 242,934 shares of Data I/O Corp common stock at $2.68 per share on October 20, 2026.
  • Common stock purchase by the Long Fund: The Red Oak Long Fund, LP acquired 130,199 shares of Data I/O Corp common stock at $2.68 per share on the same date.
  • Convertible Debenture - Fund: The Red Oak Fund, LP purchased a 5% Convertible Debenture with a principal amount of $1,953,192.04 at a conversion price of $2.68, convertible into 728,803 shares of common stock, expiring October 20, 2031.
  • Convertible Debenture - Long Fund: The Red Oak Long Fund, LP purchased a 5% Convertible Debenture with a principal amount of $1,046,808 at a conversion price of $2.68, convertible into 390,600 shares of common stock, expiring October 20, 2031.
  • Private placement: According to the filing, the debentures were purchased at 100% of their principal amount in a private placement pursuant to an agreement dated October 20, 2026.
  • Reporting persons: The filing was made jointly by Red Oak Partners, LLC, The Red Oak Fund, LP, The Red Oak Long Fund, LP, and David Sandberg, each identified as a 10% owner in relation to Data I/O Corp (NASDAQ:DAIO).

Red Oak Partners and Affiliates Disclose October 20 Purchases of Data I/O Common Stock and Convertible Debentures

According to the Form 4 filed on October 27, 2026, Red Oak Partners, LLC and three affiliated reporting persons disclosed purchases of both common stock and convertible debt securities in Data I/O Corp on October 20, 2026. The transactions involved two limited partnerships, The Red Oak Fund, LP and The Red Oak Long Fund, LP, each of which is managed by Red Oak Partners, LLC as general partner. David Sandberg is identified in the filing as the managing member of Red Oak Partners, LLC and the portfolio manager for both funds.

In Table I, the filing reports that The Red Oak Fund, LP acquired 242,934 shares of common stock at $2.68 per share, resulting in beneficial ownership of 242,934 shares held indirectly. The Red Oak Long Fund, LP acquired 130,199 shares at the same price of $2.68, with resulting indirect beneficial ownership of 130,199 shares. Both positions are reported as indirectly held through the respective limited partnerships.

In Table II, the filing discloses that each fund also purchased a 5% Convertible Debenture. The Red Oak Fund, LP's debenture carries a principal amount of $1,953,192.04, is immediately exercisable, and expires October 20, 2031, with an underlying share count of 728,803. The Red Oak Long Fund, LP's debenture has a principal amount of $1,046,808, is also immediately exercisable, expires October 20, 2031, and underlies 390,600 shares. Both debentures were purchased at a conversion price of $2.68 per share. The filing states the debentures were purchased at 100% of their principal amount in a private placement pursuant to an agreement dated October 20, 2026. Each reporting person disclaims beneficial ownership of all reported securities except to the extent of their pecuniary interest, as noted in the filing's explanation of responses.

What Was Disclosed

The filing discloses purchases of Data I/O Corp common stock totaling 373,133 shares and two 5% Convertible Debentures with combined principal of $3,000,000.04 acquired on October 20, 2026, by affiliated entities of Red Oak Partners, LLC through a private placement.