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): February 7, 2014

RINGCENTRAL, INC.

(Exact name of registrant as specified in its charter)

Address of principal executive offices: 1400 Fashion Island Boulevard, Suite 700, San Mateo, CA 94404

Registrant’s telephone number, including area code: (650) 472-4100

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 8.01. Other Events.

The 2014 Annual Meeting of Stockholders of RingCentral, Inc. (the “Company”) will be held on May 16, 2014 at such place and time as will be set forth in the Company’s proxy statement relating to that meeting. A stockholder proposal not included in the proxy statement for the Company’s 2014 Annual Meeting will be ineligible for presentation at the meeting unless the stockholder gives timely notice of the proposal in writing to the Secretary of the Company at the principal executive offices of the Company and otherwise complies with the provisions of the Company’s Bylaws.

To be timely, a stockholder’s notice must be received by the Secretary not later than the 45th day nor earlier than the 75th day before the one-year anniversary of the date on which the Company first mailed its proxy materials or a notice of availability of proxy materials (whichever is earlier) for the preceding year’s annual meeting; provided, however, that in the event that no annual meeting was held in the previous year or if the date of the annual meeting is advanced by more than 30 days prior to or delayed by more than 60 days after the one-year anniversary of the date of the previous year’s annual meeting, then, for notice by the stockholder to be timely, it must be so received by the Secretary not earlier than the close of business on the 120th day prior to such annual meeting and not later than the close of business on the later of (i) the 90th day prior to such annual meeting, or (ii) the tenth day following the day on which public announcement of the date of such annual meeting is first made. For the Company’s 2014 Annual Meeting of Stockholders, stockholders must submit written notice to the Secretary in accordance with the foregoing Bylaw provisions no later than February 17, 2014.

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.