When was Acceleron Pharma founded?

Acceleron was incorporated in the state of Delaware in June 2003 as Phoenix Pharma, Inc., and we subsequently changed our name to Acceleron Pharma Inc. and commenced operations in February 2004.

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Where is Acceleron Pharma's corporate headquarters?

Acceleron’s headquarters are located at 128 Sidney Street Cambridge, MA 02139. The main office phone number is (617) 649-9200.

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On what stock exchange are Acceleron shares traded, what is the ticker symbol and when did it go public?

Acceleron’s stock is traded on the NASDAQ Global Market under the symbol XLRN. Our initial public offering was on Sept 18, 2013.

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When does Acceleron's fiscal year end?

Our fiscal year ends on December 31.

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Who are the company's independent auditors and legal counsel?

Our independent auditor is:
Ernst & Young LLP
200 Clarendon Street
Boston, MA 02116
+1 617 266 2000

Our legal counsel is:
Ropes & Gray LLP
Prudential Tower
800 Boylston Street
Boston, MA 02199
+1 617 951 7000

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How can I purchase shares?

Shares can be purchased through a stockbroker of your choice. Acceleron does not have a direct stock purchase plan.

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What is Acceleron's CUSIP number?

The CUSIP number for Acceleron’s common stock is 00434H 108

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Does Acceleron pay dividends?

Acceleron does not expect to declare or pay any cash or other dividends on our common stock, as we intend to reinvest cash flow generated by operations in our business.

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Who is Acceleron's transfer agent?

Computershare Trust Company, N.A.
www.computershare.com/investor
US Phone: +1 877 373 6374
International Phone: +1 781 575 2879
Address for first class, registered, and certified mail:
Computershare Investor Services
P.O. Box 505000
Louisville, KY, 40233-5000 USA
Address for overnight delivery:
Computershare Investor Services
462 South 4th Street, Suite 1600
Louisville, KY, 40202 USA

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How can I replace my lost stock certificates?

If you have misplaced your stock certificates, please contact Acceleron’s transfer agent, Computershare.
Computershare Trust Company, Inc.
www.computershare.com
US Phone: +1 877 373 6374
International Phone: +1 781 575 2879 There may be a fee involved for replacing lost stock certificates.

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If my address changes, whom should I notify?

If your address has changed, please contact our transfer agent, Computershare.
Computershare Trust Company, Inc.
www.computershare.com
US Phone: +1 877 373 6374
International Phone: +1 781 575 2879.

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