NeoStem
420 Lexington Avenue
Suite 350
New York, New York 10170
Telephone: 1.212.584.4180

NeoStem Announces Closing of Public Offering of Common Stock

New York, May 3, 2013 — NeoStem, Inc. (NYSE MKT:NBS) (“NeoStem” or the “Company”), a leader in the emerging cellular therapy market, today announced the closing of a previously announced underwritten public offering of 23,000,000 shares of its common stock, including the fully exercised over-allotment option by the underwriters covering 3,000,000 shares, offered at a price to the public of $0.50 per share. The gross proceeds to the Company were $11,500,000, before deducting underwriting discounts and commissions and other offering expenses payable by the Company.

Aegis Capital Corp. acted as sole book-running manager of the offering.

This offering is being made pursuant to a shelf registration statement that the Company previously filed with the Securities and Exchange Commission (SEC), and which became effective on October 3, 2012.¬†Electronic copies of the final prospectus supplement and accompanying prospectus relating to this offering may be obtained from the SEC’s website at http://www.sec.gov or from Aegis Capital Corp, 810 7th Avenue, 18th Floor, New York, NY 10019 or via telephone at 212-813-1010 or email: prospectus@aegiscap.com.

This press release is neither an offer to sell nor a solicitation of an offer to buy any of the Company’s securities. No offer, solicitation or sale will be made in any jurisdiction in which such offer, solicitation or sale is unlawful.

About NeoStem, Inc.

NeoStem, Inc. (“NeoStem” or the “Company”) is a leader in the emerging cellular therapy industry. Our business model includes the development of novel proprietary cell therapy products as well as operating a contract development and manufacturing organization (“CDMO”) providing services to others in the regenerative medicine industry. The combination of a therapeutic development business and revenue-generating service provider business provides the Company with capabilities for cost effective in-house product development and immediate revenue and cash flow generation.

NeoStem - Cell Therapy Development - Media Section