Ribbon Communications (NASDAQ: RBBN) shares Q4 and full-year 2025 results

Filing Impact

(High)

Filing Sentiment

(Neutral)

Form Type

8-K

Rhea-AI Filing Summary

Ribbon Communications Inc. filed a current report to furnish a press release with financial information for its quarter and year ended December 31, 2025. The press release is attached as Exhibit 99.1 and is treated as “furnished,” not “filed,” limiting certain Exchange Act liabilities.

The report is signed on behalf of Ribbon Communications by Patrick W. Macken, Executive Vice President, Chief Legal Officer and Secretary.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

02/05/2026 - 04:15 PM

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

February 5, 2026

Date of Report (Date of earliest event reported)

RIBBON COMMUNICATIONS INC.

(Exact Name of Registrant as Specified in its Charter)

Delaware

001-38267

82-1669692

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

6500 Chase Oaks Blvd., Suite 100, Plano, TX 75023

(Address of Principal Executive Offices) (Zip Code)

(978) 614-8100

(Registrant’s telephone number, including area code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

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))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, par value $0.0001		RBBN		The Nasdaq Global Select Market

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. ¨

Item 2.02.

Results of Operations and Financial Condition.

The information in this Item 2.02 of this Current Report on Form 8-K (the "Current Report"), including Exhibit 99.1 attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), otherwise subject to the liabilities of that Section or incorporated by reference in any filing under the Securities Act of 1933, as amended (the "Securities Act"), or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

On February 5, 2026, Ribbon Communications Inc. (the "Company") issued a press release reporting financial information for the quarter and year ended December 31, 2025, a copy of which is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01.

Financial Statements and Exhibits.

(d)            Exhibits.

	99.1	Press Release of Ribbon Communications Inc., dated February 5, 2026.
	104	Cover Page Interactive Data File (embedded within the Inline XBRL document).

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: February 5, 2026	Ribbon Communications Inc.

	By:	/s/ Patrick Macken
		Name:	Patrick W. Macken
		Title:	Executive Vice President, Chief Legal Officer and Secretary

Source: View Original Filing on SEC EDGAR

FAQ

What does Ribbon Communications (RBBN) disclose in this 8-K filing?

Ribbon Communications discloses that it issued a press release providing financial information for its quarter and year ended December 31, 2025. This press release is attached as Exhibit 99.1 and is furnished, not filed, under the Securities Exchange Act of 1934.

Which financial period is covered by Ribbon Communications’ latest press release?

The press release furnished by Ribbon Communications covers financial information for the quarter and the full year ended December 31, 2025. It summarizes the company’s performance for that period, but the detailed figures are contained in Exhibit 99.1, not in the body of the report.

How is Exhibit 99.1 treated in Ribbon Communications’ 8-K?

Exhibit 99.1, the press release dated February 5, 2026, is expressly treated as “furnished” rather than “filed” under the Exchange Act. This means it is not automatically subject to Section 18 liability or incorporated into other Securities Act or Exchange Act filings.

Who signed Ribbon Communications’ February 5, 2026 8-K report?

The 8-K report was signed on behalf of Ribbon Communications Inc. by Patrick W. Macken. He serves as Executive Vice President, Chief Legal Officer and Secretary, formally authorizing the filing under the requirements of the Securities Exchange Act of 1934.

What exhibits are included with Ribbon Communications’ February 5, 2026 8-K?

The filing includes Exhibit 99.1, a press release dated February 5, 2026 reporting financial information for the quarter and year ended December 31, 2025, and Exhibit 104, the cover page interactive data file embedded within the Inline XBRL document.