John Townsend - Oct 15, 2025 Form 4 Insider Report for Ribbon Communications Inc. (RBBN)

Role
EVP, Chief Financial Officer
Signature
Patrick Macken, By POA from John Townsend
Stock symbol
RBBN
Transactions as of
Oct 15, 2025
Transactions value $
-$192,207
Form type
4
Date filed
10/17/2025, 04:50 PM
Previous filing
Nov 4, 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Townsend John Raymond EVP, Chief Financial Officer 6500 CHASE OAKS BLVD., SUITE 100, PLANO Patrick Macken, By POA from John Townsend 2025-10-17 0002043232

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RBBN Common Stock Options Exercise +128K 128K Oct 15, 2025 Direct F1
transaction RBBN Common Stock Tax liability -$192K -50.4K -39.35% $3.81 77.8K Oct 15, 2025 Direct F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction RBBN Restricted Stock Units (RSUs) Options Exercise $0 -128K -55.56% $0.00 103K Oct 15, 2025 Common Stock 128K Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These RSUs convert to Common Stock on a one-for-one basis.
F2 Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.
F3 The RSUs were granted on October 15, 2024 and vested as to one-third on October 15, 2025; the remaining two-thirds of the RSUs vest in four equal semi-annual installments thereafter through October 15, 2027.