FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES AND EXCHANGE ACT OF 1934 For the quarter ended September 30, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission File Number 000-14893 RESEARCH FRONTIERS INCORPORATED (Exact name of registrant as specified in its charter) | DELAWARE | 11-2103466 | | --- | --- | | (State or other jurisdiction of | ( ...