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of Contents](#toc)\n\n \n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\n \n\n**FORM 10-Q**\n\n \n\n \n\n(Mark One)\n\n☒\n\nQUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTER ENDED March 31, 2026\n\n \n\n☐\n\nTRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\n**Commission File Number 0-12346**\n\n \n\n**IRONSTONE PROPERTIES, INC.**\n\n(Name of Registrant as specified in its charter)\n\n \n\n**Delaware**\n\n**95-2829956**\n\n(State or other jurisdiction of\n\n(IRS Employer Identification No.)\n\nincorporation or organization)\n\n \n\n \n\n**40 Mesa Street, Suite 105, San Francisco, California 94129**\n\n(Address of principal executive offices, including zip code)\n\n \n\n**(415) 340-4766**\n\n**(**Registrant’s telephone number, including area code)\n\n \n\nSecurities registered under Section 12(b) of the Exchange Act:\n\n**None**\n\n \n\nSecurities registered under Section 12(g) of the Exchange Act:\n\n**Common Stock, $0.01 par value**\n\n \n\nIndicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐****No ☒\n\n \n\nIndicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒\n\n \n\nIndicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act during the past 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒****No ☐\n\n \n\nIndicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained in this form, and no disclosure will be contained, to the best of the Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of the Company’s Form 10-K or any amendment to their Form 10-K. ☒\n\n \n\nIndicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐\n\n \n\nIndicate by check mark whether the Registrant is an accelerated filer as defined in Rule 12b-2 of the Act.\n\nLarge accelerated filer ☐        Accelerated filer ☐          Non- accelerated filer ☒         Smaller reporting company ☒        \n\nEmerging growth company ☐\n\n \n\nIndicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act) Yes ☐****No ☒\n\n \n\nIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐\n\n \n\nAs of March 31, 2026, 3,472,491 shares of Common Stock, $0.01 par value, were outstanding.\n\n \n\n \n\n[Table of Contents](#toc)\n\n \n\n  \n\n \n\n**TABLE OF CONTENTS**\n\n \n\n \n \n\n**Page**\n\n[**PART I - FINANCIAL INFORMATION**](#part_one)"}