OCEANSIDE, CA –May 5, 2010 – International Stem Cell Corporation (ISCO.OB), http://www.intlstemcell.com, today announced it has entered into a definitive agreement dated May 4, 2010 (‘the Agreement”) with Socius CG II, Ltd. (“Socius”), pursuant to which Socius has committed to purchase a single tranche of up to $10 million in non-convertible Series F Preferred Stock (the "Preferred Stock") from ISCO. The Company issued a warrant to purchase $13,500,000 worth of the Company’s Common Stock, the exercise price of the warrant being determined by the closing bid price for the Company’s Common Stock on the trading day immediately preceding the date the Company initiates the sale of the Series F Preferred.

The Company anticipates that the Closing of the Preferred Stock sale will take place 20 business days after the issuance of the Warrants. Proceeds from these sales will be used to provide general working capital and to fund additional development of the Company's proprietary Parthenogenetic Stem Cell Lines, development of commercial research products, and other research and development programs and related business activities.

Additional details on the transaction are contained in the Company's Form 8-K filed today with the Securities and Exchange Commission.

A prospectus relating to this offering is available from:
Investor Relations
International Stem Cell Corporation
2595 Jason Court
Oceanside, CA 92056

ABOUT INTERNATIONAL STEM CELL CORPORATION (ISCO.OB):
International Stem Cell Corporation is a California-based biotechnology company focused on therapeutic and research products. ISCO’s core technology, parthenogenesis, results in creation of pluripotent human stem cells from unfertilized oocytes (eggs). ISCO scientists have created the first parthenogenic, homozygous stem cell line that can be a source of therapeutic cells with minimal immune rejection after transplantation into hundreds of millions of individuals of differing sexes, ages and racial groups. This offers the potential to create the first true stem cell bank, UniStemCell™, while avoiding the ethical issue of using fertilized eggs. ISCO also produces and markets specialized cells and growth media for therapeutic research worldwide through its subsidiary Lifeline Cell Technology.

FORWARD-LOOKING STATEMENTS:
Statements pertaining to anticipated future events, including the anticipated closing of the sale of Preferred Stock, along with other statements about the future expectations, beliefs, goals, plans, or prospects expressed by management constitute forward-looking statements. Any statements that are not historical fact (including, but not limited to statements that contain words such as “will,” “believes,” “plans,” “anticipates,” “expects,” “estimates,”) should also be considered to be forward-looking statements. Forward-looking statements involve risks and uncertainties, including, without limitation, risks inherent in satisfying the conditions to closing. Actual results may differ materially from the results anticipated in these forward-looking statements and as such should be evaluated together with the many uncertainties that affect the company's business, particularly those mentioned in the cautionary statements found in the company's Securities and Exchange Commission filings. The company disclaims any intent or obligation to update these forward-looking statements.
Key Words: Stem Cells, Biotechnology, Parthenogenesis

CONTACTS:
International Stem Cell Corporation
Kenneth C. Aldrich, Chairman
760-940-6383
kaldrich@intlstemcell.com
Or
Brian Lundstrom, President
760-940-6383
bl@intlstemcell.com
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