A Dark Vector Cognition product

Item 6. Exhibits

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Item 6. Exhibits

10.1Form of Employee Restricted Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2025) (incorporated by reference to Exhibit 10.5 to the Company’s Annual Report on Form 10-K (Commission File No. 001-36250) filed with the Securities and Exchange Commission on December 12, 2025).*
10.2Change in Control Severance Agreement dated November 30, 2025, between Ciena Corporation and Gary B. Smith (incorporated by reference to Exhibit 10.31 to the Company’s Annual Report on Form 10-K (Commission File No. 001-36250) filed with the Securities and Exchange Commission on December 12, 2025).*
10.3Form of Change in Control Severance Agreement dated November 30, 2025, between Ciena Corporation and Executive Officers (incorporated by reference to Exhibit 10.32 to the Company’s Annual Report on Form 10-K (Commission File No. 001-36250) filed with the Securities and Exchange Commission on December 12, 2025).*
31.1Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INSInline XBRL Instance Document - The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCHInline XBRL Taxonomy Extension Schema Document
101.CALInline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEFInline XBRL Taxonomy Extension Definition Linkbase Document
101.LABInline XBRL Taxonomy Extension Label Linkbase Document
101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
*Represents management contract or compensatory plan or arrangement

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Ciena Corporation
Date:March 5, 2026By:/s/ Gary B. Smith
Gary B. Smith
President, Chief Executive Officer and Director (Duly Authorized Officer)
Date:March 5, 2026By:/s/ Marc D. Graff
Marc D. Graff
Senior Vice President, Finance and Chief Financial Officer (Principal Financial Officer)

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