Stephen B Alexander - 20 Dec 2021 Form 4 Insider Report for CIENA CORP (CIEN)

Role: SVP, Chief Technology Officer
Signature: By: Michelle Rankin For: Stephen B. Alexander
Issuer symbol: CIEN
Transactions as of: 20 Dec 2021
Net transactions value: -$955,429
Form type: 4
Filing time: 22 Dec 2021, 14:16:18 UTC
Previous filing: 17 Dec 2021
Next filing: 20 Jan 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CIEN	Common Stock	Tax liability	$53,402	-717	-1.2%	$74.48	56,775	20 Dec 2021	Direct	F1, F2
transaction	CIEN	Common Stock	Tax liability	$34,931	-469	-0.83%	$74.48	56,306	20 Dec 2021	Direct	F2, F3
transaction	CIEN	Common Stock	Tax liability	$446,731	-5,998	-11%	$74.48	50,308	20 Dec 2021	Direct	F2, F4
transaction	CIEN	Common Stock	Tax liability	$33,069	-444	-0.88%	$74.48	49,864	20 Dec 2021	Direct	F2, F5
transaction	CIEN	Common Stock	Tax liability	$48,412	-650	-1.3%	$74.48	49,214	20 Dec 2021	Direct	F2, F6
transaction	CIEN	Common Stock	Tax liability	$96,824	-1,300	-2.6%	$74.48	47,914	20 Dec 2021	Direct	F2, F6
transaction	CIEN	Common Stock	Tax liability	$84,237	-1,131	-2.4%	$74.48	46,783	20 Dec 2021	Direct	F2, F7
transaction	CIEN	Common Stock	Tax liability	$130,563	-1,753	-3.7%	$74.48	45,030	20 Dec 2021	Direct	F2, F7
transaction	CIEN	Common Stock	Tax liability	$27,260	-366	-0.81%	$74.48	44,664	20 Dec 2021	Direct	F2, F8

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/12/2017. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 on 12/14/2017.
F2	Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
F3	Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/18/2018. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 on 12/20/2018.
F4	Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a market stock unit (MSU) award agreement dated 12/18/2018. The earning of the MSU was previously reported on Table I of the reporting person's Form 4 on 12/16/2021.
F5	Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/17/2019. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 on 12/19/2019.
F6	Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a performance stock unit (PSU) award agreement dated 12/17/2019. The earning of the PSU was previously reported on Table I of the reporting person's Form 4 on 12/18/2020.
F7	Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a performance stock unit (PSU) award agreement dated 12/16/2020. The earning of the PSU was previously reported on Table I of the reporting person's Form 4 on 12/16/2021.
F8	Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/16/2020. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 on 12/18/2020.