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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1708055	Ribbon Communications Inc.	RBBN	Services-Computer Integrated Systems Design (7373)	821669692

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1720721	S Eric Marmurek	C/O Ribbon Communications Inc. 4 Technology Park Drive Westford MA 01886	Principal Accounting Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2019-05-15	1,109	$4.85	31,850	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct

Footnotes

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 instruction letter previously adopted by the Reporting Person and represent shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Awards (RSAs). This amendment to the Form 4 filed on May 17, 2019 by the Reporting Person corrects the fact that these shares were sold pursuant to a Rule 10b5-1 instruction letter instead of by delivering of securities to the Company incident to the vesting of a security.
Excludes 36,338 shares of common stock (the "Excluded Shares") underlying an award of Restricted Stock Units granted on April 15, 2019 (the "RSU Award"). The RSU Award was inadvertently reported on Table I instead of Table II on the Form 4 filed by the Reporting Person on April 16, 2019. As a result of this administrative error, the Excluded Shares were erroneously included in the Table I, Column 5 total of the Form 4 filed by the Reporting Person on April 16, 2019.