Washington, D.C. 20549

Form 6-K


For the month of January 2018

Commission File Number: 333-219066

Clementia Pharmaceuticals Inc.
(Translation of registrant's name into English)

4150 St Catherine Street West, Suite 550
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F [ X ]      Form 40-F [   ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant's "home country"), or under the rules of the home country exchange on which the registrant's securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant's security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR. 

On January 31, 2018, the Registrant issued a press release, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

(c) Exhibit 99.1. Press release dated January 31, 2018


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, thereunto duly authorized.

      Clementia Pharmaceuticals Inc.    
Date: January 31, 2018     /s/ MICHAEL SINGER    
  Michael Singer
  Chief Financial Officer


Clementia Appoints Industry Veteran Pierre Legault to its Board of Directors

Accomplished Industry Leader Brings Over 35 Years of Experience in Advancing Biotechnology Companies

MONTREAL, Jan. 31, 2018 (GLOBE NEWSWIRE) -- Clementia Pharmaceuticals Inc. (NASDAQ:CMTA), a clinical-stage biopharmaceutical company innovating new treatments for people with ultra-rare bone disorders and other diseases, today announced the appointment of industry veteran, Pierre Legault, MBA, CA, CPA to the company’s board of directors.

Mr. Legault is an accomplished leader in the biopharmaceutical industry with a proven track record, serving as chief executive officer or chief financial officer, leading corporate and business development and creating significant value for a premier set of international biopharmaceutical companies. In addition, Mr. Legault has significant experience as a director, serving on the board of many private and public companies.

“We are very pleased to welcome Pierre to Clementia’s board of directors, where his broad experience in global finance, operations, business development and commercialization will be a valuable asset as we advance palovarotene in pivotal trials for fibrodysplasia ossificans progressiva and multiple osteochondromas and towards potential commercialization,” said David Bonita, MD, chairman of the board of Clementia.

Mr. Legault is currently the chairman of Poxel and serves on the board of directors for Syndax Pharmaceuticals and ARMO BioSciences. Previously, Mr. Legault served on the board of Tobira Therapeutics, NPS Pharmaceuticals, Forest Laboratories, Regado Biosciences, Iroko Pharmaceuticals, Cyclacel Pharmaceuticals, Eckerd Pharmacy and Nephrogenex where he was chairman and CEO.

Prior to that, Mr. Legault served as the CEO of Prosidion Ltd, CFO and treasurer of OSI Pharmaceuticals, president of Eckerd Pharmacies and senior executive vice president and chief administration officer of the Rite Aid Corporation. He was also president, CEO and CFO at legacy companies of the Sanofi group.

Mr. Legault holds an MBA in marketing from McGill University and a bachelor’s degree from HEC (University of Montreal) and also studied at Harvard Business School.

“I am excited to join Clementia at this important juncture, following the completion of a very successful initial public offering last summer and the recent initiation of a registration trial for palovarotene in FOP,” said Mr. Legault. “I believe that Clementia is well positioned for success, and I look forward to working with management and the board to ultimately bring palovarotene to patients.”

About Clementia Pharmaceuticals Inc.
Clementia is a clinical-stage biopharmaceutical company innovating new treatments for people with ultra-rare bone disorders and other diseases with high medical need. The company’s lead candidate palovarotene, a novel RARγ agonist, is currently being evaluated in the Phase 3 MOVE Trial to treat fibrodysplasia ossificans progressiva (FOP), with additional clinical studies planned in multiple osteochondromas (MO, also known as hereditary multiple exostoses) and other diseases. For more information, please visit www.clementiapharma.com.

Cautionary Note Regarding Forward-Looking Statements
This press release may include “forward-looking statements” within the meaning of the applicable securities laws. Each forward-looking statement contained in this press release is subject to known and unknown risks and uncertainties and other unknown factors that could cause actual results to differ materially from historical results and those expressed or implied by such statement. In addition to statements which explicitly describe such risks and uncertainties, readers are urged to consider statements labeled with the terms “believes,” “belief,” “expects,” “intends,” “anticipates,” “will,” or “plans” to be uncertain and forward-looking. Applicable risks and uncertainties include, among others, our ability to generate revenue and become profitable; the risks related to our heavy reliance on palovarotene, our only current product candidate; the risks associated with the development of palovarotene and any future product candidate, including the demonstration of efficacy and safety; our heavy dependence on licensed intellectual property, including our ability to source and maintain licenses from third-party owners; as well as the risks identified under the heading “Risk Factors” in our Prospectus on Form 424(b) filed with the Securities and Exchange Commission (“SEC”), as well as the other information we file with the SEC or on SEDAR. We caution investors not to rely on the forward-looking statements contained in this press release when making an investment decision in our securities. You are encouraged to read our filings with the SEC or on SEDAR, available at www.sec.gov or www.sedar.com, for a discussion of these and other risks and uncertainties. The forward-looking statements in this press release speak only as of the date of this press release, and we undertake no obligation to update or revise any of these statements, whether as a result of new information, future events or otherwise, except as required by law.

Investor/Media Contact:
Joseph Walewicz
Clementia Pharmaceuticals Inc.

Chelcie Lister
THRUST Investor Relations