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): April 8, 2015

Curis, Inc.

(Exact name of registrant as specified in charter)

Registrant’s telephone number, including area code: (617) 503-6500

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:

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

2015 Short Term Incentive Plan

On April 8, 2015, the compensation committee of the board of directors of Curis, Inc. (the “Company”) approved a 2015 short-term cash incentive arrangement for executive officers, referred to herein as the cash incentive program. The cash incentive program is designed to motivate the Company’s executive officers to achieve specified performance objectives for fiscal 2015 and to reward them for their achievement assuming those objectives are met.

Eligibility. To be eligible, an executive officer must be designated by the compensation committee or independent board members as eligible to receive payments under the cash incentive program, must be serving as an executive officer at the time the award is paid and must have achieved a performance evaluation at a “meets expectations” or higher level within the Company’s evaluation framework. The compensation committee has determined that as of the date of the adoption of the plan, the following executive officers are eligible to participate in the cash incentive program: Ali Fattaey, Ph.D., President and Chief Executive Officer, Michael P. Gray, Chief Financial Officer and Chief Business Officer, and Jaye Viner, M.D., Executive Vice President and Chief Medical Officer.

Administration. The cash incentive program is administered by the compensation committee. The compensation committee has the authority and discretion to modify performance goals under the cash incentive program and has the right to amend, modify or terminate the cash incentive program at any time.

Awards. The compensation committee has established the following target short-term incentive payment amounts, referred to herein as target amounts, for each executive officer:

The compensation committee has established weighted categories of corporate goals for 2015. The categories of corporate goals for 2015 generally relate to the following:

Each of the foregoing categories has been further delineated into three levels of potential achievement: “Threshold;” “Target;” and “Maximum.” Cash incentive payments may be paid based upon the degree to which each category of corporate goals has been achieved on this continuum, if at all. For each of the categories, achievement of performance at the “Threshold” level results in a weighted payment of no less than 50% of the target amount set forth above, achievement of performance at the “Target” level results in a weighted payment equal to 100% of the target amount set forth above, and achievement of performance at the “Maximum” level results in a weighted payment of no more than 150% of the target amount set forth above.

Distribution. The awards generally will be paid in cash. The compensation committee has sole discretion, however, to pay an award using a combination of cash and equity or all equity, with any such equity being issued pursuant to the Company’s Amended and Restated 2010 Stock Incentive Plan, as amended. If the compensation committee determines that such payment will be made in whole or in part in the form of equity, the compensation committee shall have the sole discretion to determine the nature, amount and other terms of such equity award. Payment of the awards, if any, will be made after the completion of fiscal year 2015 and no later than March 15, 2016.

Effect of Change in Control. In the event of the consummation of a change in control of the Company on or before December 31, 2015, short-term incentive amounts shall be paid out at 100% of the target amount upon such change in control.

SIGNATURE

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.