{"url_path":"/sec/rbbn/8-k/2026-06-05/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-05","source_url":"https://www.sec.gov/Archives/edgar/data/1708055/0001104659-26-070981-index.html","accession_number":"0001104659-26-070981","cik":"0001708055","ticker":"RBBN","issuer_name":"Ribbon Communications Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1708055/0001104659-26-070981-index.html","primary_entity_key":"0001708055","primary_entity_name":"Ribbon Communications Inc."},"word_count":311,"has_tables":true,"body_markdown":"false\n0001708055\n\n0001708055\n\n2026-06-03\n2026-06-03\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\nWASHINGTON, D.C. 20549\n\n**** \n\n \n\n \n\n**FORM 8-K**\n\n** **\n\n**CURRENT REPORT**\n\n** **\n\n**Pursuant to Section 13 or 15(d) of the Securities\nExchange Act of 1934**\n\n**Date of Report (Date of earliest event\nreported):** **June 3, 2026**\n\n** **\n\n \n\n \n\n**RIBBON COMMUNICATIONS INC.**\n\n(Exact Name of Registrant as Specified in its Charter)\n\n \n\nDelaware\n \n001-38267\n \n82-1669692\n\n(State or Other Jurisdiction\n\nof Incorporation)\n\n \n(Commission\nFile Number)\n \n\n(IRS Employer\n\nIdentification No.)\n\n** **\n\n**6500 Chase Oaks Blvd., Suite 100, Plano, TX\n75023**\n\n(Address of Principal Executive Offices) (Zip Code)\n\n**** \n\n**(978****) 614-8100**\n\n(Registrant’s telephone number, including\narea code)\n\n \n\n**N/A**\n\n(Former Name or Former Address, if Changed Since\nLast Report)\n\n \n\n \n\nCheck the appropriate box below if the Form 8-K\nfiling is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n \n¨\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n¨\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n¨\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n¨\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\n**Securities registered pursuant to Section 12(b)\nof the Act:**\n\n \n\n**Title of each class**\n \n**Trading Symbol(s)**\n \n**Name of each exchange on which registered**\n\nCommon Stock, par value $0.0001\n \nRBBN\n \nThe Nasdaq Global Select Market\n\n \n\nIndicate by check mark whether the registrant is an emerging\ngrowth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities\nExchange Act of 1934 (§240.12b-2 of this chapter).\n\n** **\n\nEmerging\ngrowth company ¨\n\n** **\n\nIf\nan emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for\ncomplying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨"}