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): October 23, 2017

BroadSoft, Inc.

(Exact name of registrant as specified in its charter)

9737 Washingtonian Boulevard, Suite 350

Gaithersburg, Maryland 20878

(Address of principal executive offices)

(301) 977-9440

(Registrant’s telephone number, including area code)

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:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging Growth Company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

On October 23, 2017, BroadSoft, Inc., a Delaware corporation (the “Company”), announced its entry into an Agreement and Plan of Merger (the “Merger Agreement”) with Cisco Systems, Inc., a California corporation (“Parent”), and Brooklyn Acquisition Corp., a Delaware corporation and a wholly-owned subsidiary of Parent. A copy of the joint press release announcing the execution of the Merger Agreement is attached as Exhibit 99.1 and incorporated herein by reference.

Cautionary Statement Regarding Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements. Statements that are not historical facts, including statements about beliefs or expectations, are forward-looking statements. These statements are based on plans, estimates and projections at the time the Company makes the statements, and readers should not place undue reliance on them. In some cases, readers can identify forward-looking statements by the use of forward-looking terms such as “may,” “will,” “should, “expect,” “intend,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” or “continue” or the negative of these terms or other comparable terms. Forward-looking statements involve inherent risks and uncertainties, and the Company cautions readers that a number of important factors could cause actual results to differ materially from those contained in any such forward-looking statement. Factors that could cause actual results to differ materially from those described in this Current Report on Form 8-K include, among others: the occurrence of any event, change or other circumstances that could give rise to the termination of the Merger Agreement and the inability to complete the proposed merger due to the failure to obtain stockholder approval for the proposed merger or the failure to satisfy other conditions to completion of the proposed merger, including that a governmental entity may prohibit, delay or refuse to grant approval for the consummation of the transaction. Additional risks are described in the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2017, and its subsequently filed reports with the Securities and Exchange Commission (“SEC”). Readers are cautioned not to place undue reliance on the forward-looking statements included in this Current Report on Form 8-K, which speak only as of the date hereof. The Company does not undertake to update any of these statements in light of new information or future events.

Additional Information and Where to Find It

In connection with the proposed transaction, the Company will be filing documents with the SEC, including preliminary and definitive proxy statements relating to the proposed transaction. The definitive proxy statement will be mailed to Company stockholders in connection with the proposed transaction. BEFORE MAKING ANY VOTING DECISION, INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PRELIMINARY AND DEFINITIVE PROXY STATEMENTS AND ANY OTHER DOCUMENTS TO BE FILED WITH THE SEC IN CONNECTION WITH THE PROPOSED MERGER OR INCORPORATED BY REFERENCE IN THE PROXY STATEMENT WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders may obtain free copies of these documents (when they are available) and other related documents filed with the SEC at the SEC’s web site at www.sec.gov, on the Company’s Investor Relations website at www.investor.broadsoft.com or by contacting Company Investor Relations at (561) 404-2130.

The Company, Parent and their respective directors and executive officers may be deemed participants in the solicitation of proxies from the stockholders of the Company in connection with the proposed transaction. Information regarding the special interests of the Company’s directors and executive officers in the proposed transaction will be included in the proxy statement described above. These documents are available free of charge at the SEC’s web site at www.sec.gov and from Company Investor Relations as described above. Information about Parent’s directors and executive officers can be found in Parent’s definitive proxy statement filed with the SEC on October 24, 2016. You can obtain a free copy of this document at the SEC’s website at www.sec.gov or by accessing Parent’s Investor Relations website at http://investor.cisco.com.

EXHIBIT INDEX

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.