Ribbon Communications Inc. — Director's Dealing 2021

Sep 17, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ribbon Communications Inc. (RBBN)
CIK: 0001708055
Period of Report: 2021-09-15

Reporting Person: Bucci Sam (EVP & GM IP Optical Networks)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-09-15	Common Stock	M	129717	—	Acquired	187664	Direct
2021-09-15	Common Stock	F	57283	$6.26	Disposed	130381	Direct
2021-09-15	Common Stock	M	33413	—	Acquired	163784	Direct
2021-09-15	Common Stock	F	14755	$6.26	Disposed	149039	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-09-15	Restricted Stock Units (RSU)	$	M	129717	Disposed		Common Stock (129717)	Direct
2021-09-15	Restricted Stock Unit	$	M	33413	Disposed		Common Stock (33413)	Direct

Footnotes

F1: 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 of the RSUs.

F3: The RSU vested in full on 9/15/2021.

F4: The RSUs vested as to one/third on 9/15/2021, and the remaining two-thirds of the RSUs vest in four equal semi-annual installments thereafter through September 15, 2023.