Ribbon Communications Inc. filings document public-company reporting for a Nasdaq-listed provider of communications software, IP routing and optical networking solutions. Current Reports on Form 8-K record quarterly and annual financial-result releases, exhibits furnished with earnings announcements, and leadership or board changes under Item 5.02.
Ribbon’s proxy materials describe annual meeting matters, board composition, governance arrangements and stockholder voting items. The filing record also identifies the company’s common stock, par value $0.0001, listed on the Nasdaq Global Select Market under RBBN, and connects formal disclosures to its service provider, enterprise, critical infrastructure, government and defense customer categories.
Ribbon Communications Inc. reported weaker results for the quarter ended March 31, 2026. Revenue fell to $162.6 million from $181.3 million a year earlier as both product and service sales declined. Gross profit decreased to $69.7 million, while operating expenses stayed roughly flat, driving a larger operating loss of $31.7 million versus $19.6 million.
Net loss widened to $34.5 million compared with $26.2 million, and operating activities used $22.0 million of cash. Cash and cash equivalents were $67.6 million at quarter end, against total debt with a face amount of $339.9 million.
The company remained in compliance with its 2024 Credit Facility but, on May 5, 2026, obtained a waiver of the maximum consolidated net leverage ratio for the period ending June 30, 2026 and reset leverage tests to 4.50x for the September 30, 2026 period and 4.00x thereafter. For any quarter in which the consolidated net leverage ratio exceeds 3.75x, the applicable interest rate margin increases to 7.00%, raising borrowing costs when leverage is high.
Ribbon Communications reported first quarter 2026 revenue of $163 million, down from $181 million a year earlier, and a GAAP net loss of $34.5 million or $(0.20) per share. On a non-GAAP basis, net loss was $8.4 million and Adjusted EBITDA was $(8.3) million, reflecting softer gross margin and restructuring costs.
The company projects second quarter 2026 revenue between $185 million and $195 million, non-GAAP gross margin of 49%–50%, and Adjusted EBITDA of $9–$14 million. For full-year 2026, it targets revenue around $857.5 million and Adjusted EBITDA near $112.5 million. Cash and cash equivalents were $67.6 million at March 31, 2026, down from $96.4 million at year-end, as operating activities used cash.
The company also announced that Chief Financial Officer John Townsend will resign effective April 30, 2026, to pursue another opportunity. Eric “Rick” Marmurek, currently Deputy CFO and Chief Accounting Officer, will become Executive Vice President, Chief Financial Officer and Chief Accounting Officer effective May 1, 2026, with a base salary of $475,000 and a target bonus equal to 75% of base salary.
Ribbon Communications reported first quarter 2026 revenue of $163 million, down from $181 million a year earlier, and a GAAP net loss of $34.5 million or $(0.20) per share. On a non-GAAP basis, net loss was $8.4 million and Adjusted EBITDA was $(8.3) million, reflecting softer gross margin and restructuring costs.
The company projects second quarter 2026 revenue between $185 million and $195 million, non-GAAP gross margin of 49%–50%, and Adjusted EBITDA of $9–$14 million. For full-year 2026, it targets revenue around $857.5 million and Adjusted EBITDA near $112.5 million. Cash and cash equivalents were $67.6 million at March 31, 2026, down from $96.4 million at year-end, as operating activities used cash.
The company also announced that Chief Financial Officer John Townsend will resign effective April 30, 2026, to pursue another opportunity. Eric “Rick” Marmurek, currently Deputy CFO and Chief Accounting Officer, will become Executive Vice President, Chief Financial Officer and Chief Accounting Officer effective May 1, 2026, with a base salary of $475,000 and a target bonus equal to 75% of base salary.
Ribbon Communications EVP and CFO John Raymond Townsend exercised Restricted Stock Units into 25,641 shares of Common Stock on April 15, 2026. The company withheld 10,089 shares at $2.48 per share to cover tax obligations related to the vesting.
After these transactions, Townsend directly holds 93,309 shares of Common Stock. The RSUs were granted on October 15, 2024 and convert to Common Stock on a one-for-one basis. The remaining RSUs vest in three equal semi-annual installments through October 15, 2027, indicating additional potential share delivery over time as they vest.
GRAYSON BRUNS H reported acquisition or exercise transactions in this Form 4 filing.
Ribbon Communications Inc. director H. Grayson received a grant of 15,919 shares of Common Stock on April 15, 2026. These shares were issued in lieu of cash fees for service on the company’s Board of Directors and its committees, with the grant price determined under the company’s Non-Employee Director Compensation Policy. After this award, the director directly holds 783,347 shares of Common Stock.
Ribbon Communications SVP, Deputy CFO and CAO Eric S. Marmurek exercised restricted stock units and settled related taxes in shares. On April 15, 2026, he exercised 37,500 Restricted Stock Units (each RSU representing a contingent right to one common share) into 37,500 shares of common stock. In connection with this vesting, 14,756 shares were withheld by the company at $2.48 per share to satisfy tax withholding obligations, rather than sold in the open market. These RSUs were originally issued on October 15, 2024, with remaining RSUs scheduled to vest on October 15, 2026. After these transactions, Marmurek directly holds 449,807 shares of Ribbon common stock, reflecting a routine compensation-related event.
SHANI SHAUL reported acquisition or exercise transactions in this Form 4 filing.
Ribbon Communications Inc. director Shani Shaul received a grant of 12,971 shares of Common Stock on April 15, 2026. These shares were issued in lieu of cash fees for service on the company’s Board of Directors, with the price set under the Non-Employee Director Compensation Policy. After this award, Shaul directly holds 183,466 shares of Ribbon Communications common stock.
Ribbon Communications Inc. is asking stockholders to vote at its virtual 2026 annual meeting on June 3, 2026, to elect nine directors, ratify Deloitte & Touche LLP as auditor, and approve 2025 executive pay on an advisory basis.
For 2025, revenue was $845 million, up $11 million year over year, with Global Service Provider sales up 5% and India sales up 40%. Adjusted EBITDA reached $107 million, generating $51 million in operating cash flow, year-end cash of $98 million, and net leverage of 2.3x. The company highlights strong demand for IP Optical solutions in India, voice modernization projects, and new AI-focused offerings such as its Acumen automation platform and an AWS-linked cloud-native voice session border controller.
Ribbon Communications Inc. director Louis Silver filed an initial Form 3 ownership report for the company’s common stock. The filing lists him as a director and does not report any transactions or existing derivative positions at this time.
Ribbon Communications Inc. director Louis Silver filed an initial Form 3 ownership report for the company’s common stock. The filing lists him as a director and does not report any transactions or existing derivative positions at this time.
Ribbon Communications Inc. expanded its Board of Directors to nine members and appointed Louis Silver, age 72, as a director until the 2026 Annual Meeting of Stockholders. He was designated by Swarth Investments Ltd. under an existing stockholders agreement and is expected to join one or more board committees in May 2026.
Silver brings more than 25 years of board experience with technology-focused companies and currently serves on the board of Ceva, Inc., chairing its audit committee. Under Ribbon’s Non-employee Director Compensation Plan, he will receive a pro-rated annual cash retainer of $60,000 and restricted share units valued at $170,000, plus additional retainers for committee service.
Ribbon Communications Inc. expanded its Board of Directors to nine members and appointed Louis Silver, age 72, as a director until the 2026 Annual Meeting of Stockholders. He was designated by Swarth Investments Ltd. under an existing stockholders agreement and is expected to join one or more board committees in May 2026.
Silver brings more than 25 years of board experience with technology-focused companies and currently serves on the board of Ceva, Inc., chairing its audit committee. Under Ribbon’s Non-employee Director Compensation Plan, he will receive a pro-rated annual cash retainer of $60,000 and restricted share units valued at $170,000, plus additional retainers for committee service.