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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
 
___________________________
 
FORM 8-K
___________________________

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
 
Date of Report (Date of earliest event reported):  November 13, 2020
 ___________________________
 
ACCELERON PHARMA INC.
(Exact name of Registrant as specified in its charter)
 

Delaware
001-36065
27-0072226
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(I.R.S. Employer
Identification Number)

128 Sidney Street
Cambridge,
MA
02139
(Address of principal
executive offices)
(Zip Code)
 

Registrant’s telephone number, including area code:  (617) 649-9200
 
Not Applicable
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Exchange Act:
Title of each classTicker Symbol(s)Name of each exchange on which registered
Common Stock, $0.001 per shareXLRNThe Nasdaq Global Market
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company           
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.           





Item 7.01    Regulation FD Disclosure.

On November 13, 2020, Acceleron Pharma Inc. (the "Company") issued a press release titled "Acceleron Presents New Data from the PULSAR Phase 2 Trial, Preclinical Research on Sotatercept in Pulmonary Arterial Hypertension (PAH) at the 2020 American Heart Association (AHA) Scientific Sessions." A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

On November 13, 2020, the Company also issued a press release titled "Acceleron Presents Preliminary Interim Data from the SPECTRA Phase 2 Trial of Sotatercept in Pulmonary Arterial Hypertension (PAH) at the 2020 American Heart Association Scientific Sessions." A copy of the press release is attached as Exhibit 99.2 to this Current Report on Form 8-K.

The information contained in Item 7.01 of this Current Report on Form 8-K and Exhibits 99.1 and 99.2 hereto are being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or for any other purpose, and shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in any such filing, except as expressly set forth by specific reference in such a filing.

Item 8.01    Other Events.

On November 13, 2020, the Company will host a previously announced conference call and webcast to review the presentations of sotatercept at the 2020 AHA Scientific Sessions. A copy of the slide presentation to be presented during this conference call and webcast is attached as Exhibit 99.3 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 9.01    Financial Statements and Exhibits.

(d)    Exhibits.

Exhibit NumberDescription of Exhibit
99.1
99.2
99.3
104Cover Page Interactive Data File (embedded within the Inline XBRL document)
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SIGNATURES
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
 

ACCELERON PHARMA INC.
By:
/s/ Adam M. Veness, Esq.
Adam M. Veness, Esq.
Senior Vice President, General Counsel and Secretary
Date: November 13, 2020

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