SCHEDULE 13D/A 0001781002-23-000049 0001781002 XXXXXXXX LIVE 4 Common Stock, $0.05 par value 09/30/2025 false 0000087802 808757108 Scientific Industries, Inc.

80 Orville Drive, Suite 102 Bohemia NY 11716

Bleichroeder LP (212) 698-3101 1345 Avenue of the Americas, 47th Floor New York NY 10105 0001781002 N Bleichroeder LP AF N DE 2715026 0 2715026 0 2715026 N 21.19 IA Y Bleichroeder Holdings LLC AF N DE 2715026 0 2715026 0 2715026 N 21.19 HC Y Andrew Gundlach AF N X1 2715026 0 2715026 0 2715026 N 21.19 IN Item 5 is hereby amended to include the following: As of the date of this Amendment, the Reporting Persons beneficially own 2,715,026 Shares, representing 21.19% of the outstanding Shares (including Shares that will be issuable upon the exercise of the Warrants). Bleichroeder LP Andrew Gundlach 11/14/2025 Bleichroeder Holdings LLC Andrew Gundlach 11/14/2025 Andrew Gundlach Andrew Gundlach 11/14/2025