David M. Rothenstein - 20 Dec 2021 Form 4 Insider Report for CIENA CORP (CIEN)

Role: Sr. VP, General Counsel
Signature: By: Michelle Rankin For: David M. Rothenstein
Issuer symbol: CIEN
Transactions as of: 20 Dec 2021
Net transactions value: -$1,312,040
Form type: 4
Filing time: 22 Dec 2021, 15:01:40 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	$131,979	-1,772	-0.61%	$74.48	290,502	20 Dec 2021	Direct	F1, F2
transaction	CIEN	Common Stock	Tax liability	$48,933	-657	-0.23%	$74.48	289,845	20 Dec 2021	Direct	F2, F3
transaction	CIEN	Common Stock	Tax liability	$45,135	-606	-0.21%	$74.48	289,239	20 Dec 2021	Direct	F2, F4
transaction	CIEN	Common Stock	Tax liability	$65,989	-886	-0.31%	$74.48	288,353	20 Dec 2021	Direct	F1, F2
transaction	CIEN	Common Stock	Tax liability	$37,091	-498	-0.17%	$74.48	287,855	20 Dec 2021	Direct	F2, F5
transaction	CIEN	Common Stock	Tax liability	$114,848	-1,542	-0.54%	$74.48	286,313	20 Dec 2021	Direct	F2, F6
transaction	CIEN	Common Stock	Tax liability	$178,007	-2,390	-0.83%	$74.48	283,923	20 Dec 2021	Direct	F2, F6
transaction	CIEN	Common Stock	Tax liability	$64,574	-867	-0.31%	$74.48	283,056	20 Dec 2021	Direct	F2, F7
transaction	CIEN	Common Stock	Tax liability	$625,483	-8,398	-3%	$74.48	274,658	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 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.
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 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.
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 12/16/2020. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 on 12/18/2020.
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 12/16/2020. The earning of the PSU was previously reported on Table I of the reporting person's Form 4 on 12/16/2021.
F7	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.
F8	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.