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): May 20, 2015

DEMANDWARE, INC.

(Exact Name of Company as Specified in Charter)

Company’s telephone number, including area code: (888) 553-9216

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 (see General Instruction A.2. below):

On May 20, 2015, the Company held its 2015 Annual Meeting of Stockholders (the “Annual Meeting”). The proposals below, which are described in the Company’s definitive proxy statement for the Annual Meeting (the “proxy statement”), were submitted to a vote of the Company’s stockholders.

Proposal 1 – The election of two Class III directors, each to serve for a three-year term.

The Company’s stockholders re-elected the two nominees named in the proxy statement as Class III directors, each to serve until the 2018 annual meeting of stockholders. The voting results were as follows:

The terms of office of the following directors continued after the Annual Meeting:

Proposal 2 – The approval, in a non-binding advisory say-on-pay vote, of the compensation of the Company’s named executive officers, as described in the Compensation Discussion and Analysis, executive compensation tables and accompanying narrative disclosures in the proxy statement.

The Company’s stockholders approved, on an advisory basis, the compensation of the Company’s named executive officers. The voting results were as follows:

Proposal 3 –The ratification, in a non-binding advisory vote, of the appointment of Deloitte & Touche LLP, an independent registered accounting firm, as the Company’s independent auditors for the year ending December 31, 2015.

The Company’s stockholders ratified, on an advisory basis, the Company’s appointment of Deloitte & Touche LLP as the Company’s independent auditors for the year ending December 31, 2015. The voting results were as follows:

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

(b) Resignation as Executive Officer

On May 26, 2015, Sheila M. Flaherty determined to resign, effective as of June 26, 2015, as the Chief Legal Officer and Secretary of Demandware, Inc. (the “Company”).

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.