Note 1 - Business Organization, Nature of Operations, Risks and Uncertainties and Basis of Presentation

Organization and Operations

Cell Source, Inc. (“Cell Source”, “CSI” or the “Company”) is a Nevada corporation formed on June 6, 2012 that is the parent company of Cell Source Limited (“CSL”), a wholly owned subsidiary which was founded in Israel in 2011 in order to commercialize a suite of inventions relating to certain cancer treatments. The Company is a biotechnology company focused on developing cell therapy treatments based on the management of immune tolerance. The Company’s lead prospective product is its patented Veto Cell immune system management technology, which is an immune tolerance biotechnology that enables the selective blocking of immune responses. CSL’s Veto Cell immune system management technology is based on technologies patented, owned, and licensed to CSL by Yeda Research and Development Company Limited, an Israeli corporation (“Yeda”) (see Note 8, Commitments and Contingencies). The Company’s target indications include: lymphoma, leukemia and multiple myeloma through the facilitation of safer and more accessible stem cell (e.g. bone marrow) transplantation acceptance, treatment of end stage kidney disease and other non-malignant organ diseases through improved organ transplantation (broadened donor pool, reduced dependence on post-transplant anti-rejection therapy) and ultimately treating a variety of cancers and non-malignant diseases. The Company’s current research and development activities are primarily conducted through sponsored research agreements with The University of Texas MD Anderson Cancer Center (see Note 8, Commitments and Contingencies).

Risks and Uncertainties

On February 24, 2022, Russian military forces invaded Ukraine, and the length, impact, and outcome of the ongoing war in Ukraine is highly unpredictable. On October 7, 2023, Hamas terrorists infiltrated Israel’s border with the Gaza Strip and conducted a series of attacks on civilian and military targets. Hamas has also launched extensive rocket attacks on Israeli population and industrial centers located along Israel’s border with the Gaza Strip and in other areas within the State of Israel. These attacks have resulted in extensive deaths, injuries and kidnapping. Following the attack, Israel’s security cabinet declared war against Hamas and a military campaign against these terrorist organizations commenced in parallel to their continued rocket and terror attacks. Although there is currently a cease fire in the Israel-Hamas conflict, no assurance can be given that the cease fire will continue. On February 28, 2026, United States and Israeli forces conducted a series of attacks in Iran, and Iran responded by launching retaliatory attacks on Israel and United States military bases in the Middle East. The intensity and duration of the United States/Israel war against Iran is difficult to predict. As a result of the Russia-Ukraine, Israel-Hamas and United States/Israel-Iran wars and other geopolitical and macroeconomic events, the global credit and financial markets have experienced volatility and disruptions.

As of March 31, 2025 and through the date of this filing, the Company considered the impact of these wars and other geopolitical and macroeconomic events on its business and operational assumptions and estimates and determined there were no material adverse impacts on the Company’s consolidated results of operations and financial position.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 8 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, such statements include all adjustments (consisting only of normal recurring items) which are considered necessary for a fair presentation of the condensed consolidated financial position of the Company as of March 31, 2025 and the condensed consolidated results of its operations and cash flows for the three months ended March 31, 2025 and 2024. The results of operations for the three months ended March 31, 2025 are not necessarily indicative of the operating results for the full year ending December 31, 2025 or any other period. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related disclosures of the Company as of December 31, 2024 and for the year then ended which were included in the Company’s Annual Report on Form 10-K that was filed with the Securities and Exchange Commission (“SEC”) on April 6, 2026.