Stephen B Alexander - 20 Dec 2022 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 2022
Net transactions value: -$376,423
Form type: 4
Filing time: 22 Dec 2022, 14:47:11 UTC
Previous filing: 19 Dec 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	$22,467	-456	-0.55%	$49.27	81,745	20 Dec 2022	Direct	F1, F2
transaction	CIEN	Common Stock	Tax liability	$21,876	-444	-0.54%	$49.27	81,301	20 Dec 2022	Direct	F2, F3
transaction	CIEN	Common Stock	Tax liability	$96,569	-1,960	-2.4%	$49.27	79,341	20 Dec 2022	Direct	F2, F4
transaction	CIEN	Common Stock	Tax liability	$18,033	-366	-0.46%	$49.27	78,975	20 Dec 2022	Direct	F2, F5
transaction	CIEN	Common Stock	Tax liability	$86,420	-1,754	-2.2%	$49.27	77,221	20 Dec 2022	Direct	F2, F6
transaction	CIEN	Common Stock	Tax liability	$55,724	-1,131	-1.5%	$49.27	76,090	20 Dec 2022	Direct	F2, F6
transaction	CIEN	Common Stock	Tax liability	$13,007	-264	-0.35%	$49.27	75,826	20 Dec 2022	Direct	F2, F7
transaction	CIEN	Common Stock	Tax liability	$62,327	-1,265	-1.7%	$49.27	74,561	20 Dec 2022	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 12/18/2018. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 on 12/20/2018.
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 12/17/2019. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 on 12/19/2019.
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 12/17/2019. The earning of the MSU was previously reported on Table I of the reporting person's Form 4 on 12/15/2022.
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 12/14/2021. Acquisition of the RSU was previously reported in 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 performance stock unit (PSU) award agreement dated 12/14/2021. The earning of the PSU was previously reported on Table I of the reporting person's Form 4 on 12/15/2022.