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): January 30, 2012

MONOTYPE IMAGING HOLDINGS INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (781) 970-6000

N/A

(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:

On January 30, 2012, Monotype Imaging Holdings Inc., a Delaware corporation (“Monotype Imaging”), received a voluntary request for information from the United States Department of Justice (the “DOJ”). The DOJ also informed Monotype Imaging that it will likely issue a Civil Investigative Demand (“CID”) to Monotype Imaging pursuant to the Antitrust Civil Process Act of 1976. The voluntary request for information, and if issued by the DOJ, the CID, seek documentary materials and information regarding the proposed merger between Monotype Imaging and Bitstream Inc. Monotype Imaging is in the process of responding to the DOJ’s request and intends to work cooperatively with the DOJ to resolve any issues that the DOJ may raise concerning the transaction.

Completion of the proposed merger remains subject to stockholder and regulatory approval and is subject to the satisfaction or waiver of the other closing conditions specified in the merger agreement.

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.