Ribbon Communications Inc. — Director's Dealing 2021

Apr 16, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ribbon Communications Inc. (RBBN)
CIK: 0001708055
Period of Report: 2021-04-15

Reporting Person: Marmurek Eric S (SVP, CAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-04-15	Common Stock	M	6057	—	Acquired	62974	Direct
2021-04-15	Common Stock	F	1474	$8.45	Disposed	61500	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-04-15	Restricted Stock Units (RSUs)	$	M	6057	Disposed		Common stock (6057)	Direct

Footnotes

F1: RSUs convert into 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 RSUs.

F3: On April 15, 2019, the reporting person was granted 36,338 RSUs. The RSUs vested as to one-third on April 15, 2020 and vested as to one-sixth on each of October 15, 2020 and April 15, 2021. The remaining RSUs will vest in two equal, semi-annual installments through April 15, 2022.