Item 1.01 - Entry into a Material Definitive Agreement.

As previously reported, during July 2012, our subsidiary LifeMap Sciences, Inc. entered into a Share Exchange and Contribution Agreement (the "LifeMap Agreement") with Alfred D. Kingsley and a company that he controls, Greenway Partners, L.P., pursuant to which Mr. Kingsley and Greenway agreed to contribute to LifeMap, in the aggregate, BioTime common shares, no par value ("BioTime Shares") having an aggregate value of not less than $2,000,000 and not more than $3,000,000, determined as provided in the LifeMap Agreement, in exchange for shares of LifeMap common stock, no par value, at an initial price of $1.75 per LifeMap share. Mr. Kingsley and Greenway have contributed to LifeMap BioTime Shares having a value in excess of $2,000,000 determined as provided in the LifeMap Agreement, in exchange for shares of LifeMap common stock. On September 28, 2012, LifeMap, Mr. Kingsley and Greenway amended the LifeMap Agreement to extend the "Second Outside Date" to November 30, 2012.

On November 30, 2012, LifeMap, Mr. Kingsley and Greenway further amended the LifeMap Agreement to extend the "Second Outside Date" to December 14, 2012.