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Ribbon Communications Inc.

For the period ended Dec 31, 2025. Filed Feb 26, 2026.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 26, 2026

RBBN$1.40-2.8%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Item 5. Market Information

Our common stock is traded on The Nasdaq Global Select Market under the symbol “RBBN.”

Holders

At February 23, 2026, there were approximately 350 holders of record of our common stock.

Recent Sales of Unregistered Securities

None.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

The following table summarizes repurchases of our common stock during the fourth quarter of 2025:

​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​
​ · ​ ​ ​ · ​ · ​ · ​ ​ ​ · ​ · ​ ​ ​ · ​ · ​ · Approximate Dollar
​ · ​ · ​ · ​ · ​ · ​ · ​ · Total Number of · ​ · Value of Shares
​ · ​ · ​ · ​ · ​ · ​ · ​ · Shares Purchased · ​ · that May
​ · ​ · ​ · ​ · ​ · ​ · ​ · as Part of · ​ · Yet be Purchased
​​Total Number​Average​Publicly​Under
​​of Shares​Price Paid​Announced Plans​the Plans
Period​ ​ ​Purchased (1)​ ​ ​per Share​ ​ ​or Programs (2)​ ​ ​or Programs (3)
October 1, 2025 to October 31, 2025​135,611​$3.81​418,496​$42,769,442
November 1, 2025 to November 30, 2025​930​$3.08​553,743​$41,045,333
December 1, 2025 to December 31, 2025​3,995​$2.98​—​$41,045,333
Total​140,536​$3.78​972,239​$41,045,333
(1)Upon vesting of restricted stock awards, certain of our employees may return to us a portion of the newly vested shares to satisfy the tax withholding obligations that arise in connection with such vesting. During the fourth quarter of 2025, 140,536 shares of restricted stock were returned to us by employees to satisfy tax withholding obligations arising in connection with vesting of restricted stock, which shares are included in this column.
(2)In June 2025, we announced a stock repurchase program for the period beginning June 5, 2025 through December 31, 2027, under which our Board of Directors authorized the repurchase of up to $50 million of our common stock at management’s discretion in the open market, in privately negotiated transactions structured through investment banking institutions, or a combination of the foregoing, (the "2025 Repurchase Program" or the “Repurchase Program”). We used $3.2 million to repurchase 972,239 shares of our common stock under the Repurchase Program during the fourth quarter of 2025. At December 31, 2025, we had $41.0 million remaining under the Repurchase Program for future repurchases. The amount and timing of repurchases are subject to a variety of factors including liquidity, cash flow, stock price, compliance with our credit facility and general business and market conditions. We may also, from time to time, enter into Rule 10b5-1 plans to facilitate repurchases of our shares under this authorization. The Repurchase Program may be modified, increased, suspended, or discontinued at any time. The Repurchase Program is being funded using cash on hand and cash from operations.
(3)Represents amounts available for repurchases under the Repurchase Program.

Performance Graph

The following performance graph compares the cumulative total return to stockholders for our common stock for the period from December 31, 2020 through December 31, 2025 with the cumulative total return over the same period on the Nasdaq Composite Index, the Nasdaq Telecommunications Index and the Russell 2000. The comparison assumes an investment

of $100 on December 31, 2020 in our common stock and in each of the indices and, in each case, assumes reinvestment of all dividends, if any. The performance shown is not necessarily indicative of future performance.

This graph is not deemed to be “filed” with the SEC or subject to the liabilities of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and should not be deemed to be incorporated by reference into any of our prior or subsequent filings under the Securities Act of 1933, as amended, or the Exchange Act.

​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​ · ​
​ · ​ ​ ​ · December 31,
​​2020​2021​2022​2023​2024​2025
Ribbon Communications Inc.​$100.00​$92.23​$42.53​$44.21​$63.41​$43.90
Nasdaq Composite​$100.00​$122.18​$82.43​$119.22​$154.48​$187.14
Russell 2000​$100.00​$114.82​$91.35​$106.82​$119.14​$134.40
Nasdaq Telecommunications​$100.00​$102.14​$74.69​$82.63​$93.76​$107.59
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.