Subsequent Events	6 Months Ended
Jun. 30, 2011
Subsequent Events	Note 14 – Subsequent Events Amorcyte Merger On July 14, 2011, the Company signed a definitive merger agreement whereby it will acquire Amorcyte, Inc. ("Amorcyte"), a development stage cell therapy company focusing on novel treatments for cardiovascular disease. Amorcyte's lead product candidate, AMR-001, is ready to initiate a Phase II study for the treatment of acute myocardial infarction (AMI). The definitive merger agreement provides for the issuance of an aggregate of 6,821,283 shares of Common Stock (subject to downward adjustment, to be held in escrow for eventual distribution to the former Amorcyte security holders) and seven year warrants to purchase an aggregate of 1,881,008 shares of Common Stock at $1.466 per share (the transfer of any shares issued upon exercise of these warrants will be restricted until one year after the closing date). Up to an additional 4,092,768 shares of Common Stock will be issued if and only if specified AMR-001 milestones are achieved. Amorcyte security holders are entitled to receive additional consideration in the form of an earn out based upon net reveneues of AMR-001, if AMR-001 is commercialized. Holders of greater than 50% of Amorcyte's outstanding voting power have agreed to vote in favor of the merger. The closing of the merger is subject to various conditions, including the approval by Amorcyte stockholders of the merger and the merger agreement, and approval by NeoStem stockholders of the issuance of NeoStem's securities in the merger. Refer to the Company’s Current Report on Form 8-K dated July 11, 2011 for additional information on the Amorcyte Merger and the Amorcyte Merger Agreement. Amendment and Guaranty of Lease With Respect to PCT’s Mountain View Facility On July 11, 2011, the Company’s subsidiary PCT executed a Second Amendment effective July 1, 2011 to its existing lease dated September 1, 2005 and amended July 1, 2006 with respect to PCT's Mountain View, California cell therapy manufacturing facility. The lessor under the lease is Vanni Business Park, LLC. The Second Amendment extends the term of the lease to June 30, 2017. Commencing July 1, 2012, the monthly base rent will be $41,289.60, subject to certain annual cost of living adjustments starting July 1, 2013. In connection with the Second Amendment, the lessor required that NeoStem, as sole member of PCT, execute a Guaranty of Lease. Equity Sales On July 6, 2011, three key Amorcyte stockholders (including a fund managed by an Amorcyte director) invested an aggregate of $728,000 in a private placement of 568,750 shares of Common Stock (purchase price $1.28 per share). On July 22, 2011, the Company completed an underwritten offering of 13,750,000 units at a purchase price of $1.20 per unit, with each unit consisting of one share of Common Stock and a five year warrant to purchase 0.75 of a share of Common Stock at an exercise price of $1.45 per share (the “Offering”). The Company sold securities in the Offering under the Company’s previously filed shelf registration statement on Form S-3 (333-173855), which was declared effective by the Securities and Exchange Commission on June 13, 2011. Lazard Capital Markets LLC (“Lazard”) and JMP Securities LLC (“JMP”) acted as representatives of the underwriters named in an Underwriting Agreement, dated as of July 19, 2011, by and among the Company, Lazard, JMP and such underwriters. The Company received gross proceeds of $16,500,000, prior to deducting underwriting discounts and offering expenses payable by the Company.

Note 14 – Subsequent Events

Amorcyte Merger

On July 14, 2011, the Company signed a definitive merger agreement whereby it will acquire Amorcyte, Inc. ("Amorcyte"), a development stage cell therapy company focusing on novel treatments for cardiovascular disease. Amorcyte's lead product candidate, AMR-001, is ready to initiate a Phase II study for the treatment of acute myocardial infarction (AMI). The definitive merger agreement provides for the issuance of an aggregate of 6,821,283 shares of Common Stock (subject to downward adjustment, to be held in escrow for eventual distribution to the former Amorcyte security holders) and seven year warrants to purchase an aggregate of 1,881,008 shares of Common Stock at $1.466 per share (the transfer of any shares issued upon exercise of these warrants will be restricted until one year after the closing date). Up to an additional 4,092,768 shares of Common Stock will be issued if and only if specified AMR-001 milestones are achieved. Amorcyte security holders are entitled to receive additional consideration in the form of an earn out based upon net reveneues of AMR-001, if AMR-001 is commercialized. Holders of greater than 50% of Amorcyte's outstanding voting power have agreed to vote in favor of the merger. The closing of the merger is subject to various conditions, including the approval by Amorcyte stockholders of the merger and the merger agreement, and approval by NeoStem stockholders of the issuance of NeoStem's securities in the merger.

Refer to the Company’s Current Report on Form 8-K dated July 11, 2011 for additional information on the Amorcyte Merger and the Amorcyte Merger Agreement.

Amendment and Guaranty of Lease With Respect to PCT’s Mountain View Facility

On July 11, 2011, the Company’s subsidiary PCT executed a Second Amendment effective July 1, 2011 to its existing lease dated September 1, 2005 and amended July 1, 2006 with respect to PCT's Mountain View, California cell therapy manufacturing facility. The lessor under the lease is Vanni Business Park, LLC. The Second Amendment extends the term of the lease to June 30, 2017. Commencing July 1, 2012, the monthly base rent will be $41,289.60, subject to certain annual cost of living adjustments starting July 1, 2013. In connection with the Second Amendment, the lessor required that NeoStem, as sole member of PCT, execute a Guaranty of Lease.

Equity Sales

On July 6, 2011, three key Amorcyte stockholders (including a fund managed by an Amorcyte director) invested an aggregate of $728,000 in a private placement of 568,750 shares of Common Stock (purchase price $1.28 per share).

On July 22, 2011, the Company completed an underwritten offering of 13,750,000 units at a purchase price of $1.20 per unit, with each unit consisting of one share of Common Stock and a five year warrant to purchase 0.75 of a share of Common Stock at an exercise price of $1.45 per share (the “Offering”). The Company sold securities in the Offering under the Company’s previously filed shelf registration statement on Form S-3 (333-173855), which was declared effective by the Securities and Exchange Commission on June 13, 2011. Lazard Capital Markets LLC (“Lazard”) and JMP Securities LLC (“JMP”) acted as representatives of the underwriters named in an Underwriting Agreement, dated as of July 19, 2011, by and among the Company, Lazard, JMP and such underwriters. The Company received gross proceeds of $16,500,000, prior to deducting underwriting discounts and offering expenses payable by the Company.