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 June 8, 2005 Date of Report (Date of earliest event reported) SONUS NETWORKS, INC. (Exact Name of Registrant as Specified in its Charter) DELAWARE 000-30229 04-3387074 ----------- --------- ---------- (State or Other Jurisdiction (Commission File Number) (IRS Employer of Incorporation) Identification No.) 250 APOLLO DRIVE, CHELMSFORD, MASSACHUSETTS 01824 (Address of Principal Executive Offices) (Zip Code) (978) 614-8100 (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 (see General Instruction A.2. below): |_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))Item 8.01. Other Events. On June 8, 2005, Sonus Networks, Inc. issued a press release reporting the termination of an SEC investigation. A copy of the press release is attached as Exhibit 99.1 hereto.
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. Date: June 8, 2005 SONUS NETWORKS, INC. By: /s/ Ellen Richstone ------------------------- Ellen Richstone Chief Financial Officer
Exhibit Index 99.1 Press release of Sonus Networks, Inc. dated June 8, 2005 reporting the termination of an SEC investigation.
Exhibit 99.1 Sonus Networks Announces Termination of SEC Investigation CHELMSFORD, Mass.--(BUSINESS WIRE)--June 8, 2005--Sonus Networks (Nasdaq: SONS), a leading supplier of service provider voice over IP (VoIP) infrastructure solutions, announced that it has received written notification from the Securities and Exchange Commission regarding the formal inquiry that the SEC undertook in connection with the Company's previously announced independent investigation of its financial reporting. The SEC has notified the Company that its investigation has been terminated and that no enforcement action has been recommended. About Sonus Networks Sonus Networks, Inc. is a leading provider of voice over IP (VoIP) infrastructure solutions for wireline and wireless service providers. With its Open Services Architecture(TM) (OSA), Sonus delivers end-to-end solutions addressing a full range of carrier applications, including trunking and tandem switching, residential and business access, network border switching and enhanced services. Sonus' voice infrastructure solutions, including media gateways, softswitches and network management systems, are deployed in service provider networks worldwide. Sonus, founded in 1997, is headquartered in Chelmsford, Massachusetts. Additional information on Sonus is available at http://www.sonusnet.com. Sonus is a registered trademark of Sonus Networks. Open Services Architecture, GSX9000 and Insignus are trademarks of Sonus Networks. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners. CONTACT: Investor Relations: Jocelyn Philbrook, 978-614-8672 jphilbrook@sonusnet.com or Media Relations: Laureen McGowan, 617-275-6515 lmcgowan@greenoughcom.com