SCHEDULE 13G/A 0001212897 XXXXXXXX LIVE 4 Common Stock, par value $0.05 per share 09/30/2025 0000087802 Scientific Industries, Inc. 808757108 80 Orville Drive Suite 102 Bohemia NY 11716 Rule 13d-1(c) North Run Capital, LP b DE 0 1189632 0 1189632 1189632 N 9.99 PN North Run Advisors, LLC b DE 0 1189632 0 1189632 1189632 N 9.99 OO Todd B. Hammer b X1 0 1189632 0 1189632 1189632 N 9.99 IN Thomas B. Ellis b X1 0 1189632 0 1189632 1189632 N 9.99 IN Michael Bosco b 0 1189632 0 1189632 1189632 N 9.99 IN North Run - Due North Partners, LP b DE 0 1189632 0 1189632 1189632 N 9.99 PN North Run GP, LP b 0 1189632 0 1189632 1189632 N 9.99 PN Scientific Industries, Inc. 80 Orville Drive, Suite 102, Bohemia, New York 11716 This Amendment No. 4 to Schedule 13G (this "Amendment") is being filed on behalf of North Run Capital, LP, a Delaware limited partnership (the "Investment Manager"), North Run Advisors, LLC, a Delaware limited liability company ("North Run"), North Run - Due North Partners, LP, a Delaware limited partnership ("Due North"), North Run GP, LP, a Delaware limited partnership (the "GP"), Todd B. Hammer, Thomas B. Ellis and Michael Bosco (collectively, the "Reporting Persons"). The Investment Manager is the investment manager of certain private pooled investment vehicles, including Due North. Todd B. Hammer, Thomas B. Ellis and Michael Bosco are the limited partners of Due North. This Amendment relates to shares of Common Stock, par value $0.05 per share (the "Common Stock"), of Scientific Industries, Inc., a Delaware corporation (the "Issuer"), held by the Due North. For all Filers: 867 Boylston St., 5th Floor #1361, Boston, MA 02116. (1) North Run Capital, LP is a Delaware limited partnership. (2) North Run Advisors, LLC is a Delaware limited liability company. (3) Todd B. Hammer is a U.S. citizen. (4) Thomas B. Ellis is a U.S. citizen. (5) Michael Bosco is a U.S. citizen. (6) North Run - Due North Partners, LP is a Delaware limited partnership. (7) North Run GP, LP is a Delaware limited partnership. Y The Investment Manager, North Run, Todd B. Hammer, Thomas B. Ellis, Michael Bosco, Due North and the GP may be deemed the beneficial owners of 1,189,632 shares of Common Stock. This amount consists of (i) 835,000 shares of Common Stock and (ii) 354,632 warrants exercisable to purchase shares of Common Stock. As of September 30, 2025, the Reporting Persons hold an aggregate of 920,000 warrants to purchase Common Stock. However, due to beneficial ownership limitations, only 354,632 of such warrants are exercisable within 60 days. The Investment Manager, North Run, Todd B. Hammer, Thomas B. Ellis, Michael Bosco, Due North and the GP may be deemed the beneficial owners of 9.99% of the outstanding shares of Common Stock. This percentage was determined by dividing 1,189,632 by 11,553,599, which is the number of shares of Common Stock outstanding as of August 19, 2025, according to the Issuer's Form 10-Q filed on August 19, 2025 with the Securities and Exchange Commission, plus shares that may be acquired by such Reporting Persons within 60 days subject to beneficial ownership limitations. Not applicable. The Investment Manager, North Run, Todd B. Hammer, Thomas B. Ellis, Michael Bosco, Due North and the GP have the shared power to vote the 1,189,632 shares of Common Stock beneficially owned. Not applicable. The Investment Manager, North Run, Todd B. Hammer, Thomas B. Ellis, Michael Bosco, Due North and the GP have the shared power to dispose of the 1,189,632 shares of Common Stock beneficially owned. Y Y Y Y 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. North Run Capital, LP /s/ Michael Fisher 11/13/2025 North Run Advisors, LLC /s/ Michael Fisher 11/13/2025 Todd B. Hammer /s/ Michael Fisher 11/13/2025 Thomas B. Ellis /s/ Michael Fisher 11/13/2025 Michael Bosco /s/ Michael Fisher 11/13/2025 North Run - Due North Partners, LP /s/ Michael Fisher 11/13/2025 North Run GP, LP /s/ Michael Fisher 11/13/2025