Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported):   November 11, 2009

Altus Pharmaceuticals Inc.
(Exact name of registrant as specified in its charter)

Delaware 0-51711 04-3573277
(State or other jurisdiction
(I.R.S. Employer
of incorporation) File Number) Identification No.)
PO Box 403, Burlington, Massachusetts   01803
(Address of principal executive offices)
(Zip Code)
Registrant’s telephone number, including area code:   781-373-6000

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))

Item 1.03 Bankruptcy or Receivership.

On November 11, 2009, Altus Pharmaceuticals Inc. (the "Company") filed a voluntary petition for relief (the "Bankruptcy Filing") under Chapter 7 of the United States Bankruptcy Code in the United States Bankruptcy Court for the District of Massachusetts (the "Bankruptcy Court"). In connection with the Bankruptcy Filing, the Company has ceased all business activity and operations.
The Company’s Chapter 7 case will be administered by the Bankruptcy Court as Case No. 09-20886.


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.

    Altus Pharmaceuticals Inc.
November 12, 2009   By:   Thomas J. Phair, Jr.
        Name: Thomas J. Phair, Jr.
        Title: Vice President, Finance and Treasurer