CIENA CORP

Q: Aug 1 2026

Q: May 2 2026

Q: Jan 31 2026

FY: Nov 1 2025

Q: Aug 2 2025

Q: May 3 2025

Q: Feb 1 2025

FY: Nov 2 2024

Q: Jul 27 2024

Q: Apr 27 2024

Q: Jan 27 2024

FY: Oct 28 2023

Q: Jul 29 2023

Q: Apr 29 2023

Q: Jan 28 2023

FY: Oct 29 2022

Q: Jul 30 2022

Q: Apr 30 2022

Q: Jan 29 2022

FY: Oct 30 2021

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Other Events

Results of Operations and Financial Condition

Submission of Matters to a Vote of Security Holders

Results of Operations and Financial Condition

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

Other Events

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Results of Operations and Financial Condition

Submission of Matters to a Vote of Security Holders

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Results of Operations and Financial Condition

Other Events

2.02,5.02,9.01

2.02,9.01

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Written communication about a business combination transaction (Rule 425)

Notice of Effectiveness

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Written communication about a business combination transaction (Rule 425)

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Notice of Effectiveness

Post-effective amendment to a registration statement

Notice of Effectiveness

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Kosaraju Sheela

Phipps Jason

Graff Marc D.

Phipps Jason

Graff Marc D.

Kosaraju Sheela

Cumello Joseph

Claflin Bruce L.

NEVENS THOMAS MICHAEL

Cumello Joseph

NEVENS THOMAS MICHAEL

SMITH GARY B

Hoffman Grant

Graff Marc D.

Gage Brodie

DiPerna Dino

Kosaraju Sheela

Cumello Joseph

Phipps Jason

Rothenstein David M

Specialized Disclosure Report

Annual Report Scanned (Paper)

Specialized Disclosure Report

Annual Report Scanned (Paper)

Specialized Disclosure Report

Annual Report Scanned (Paper)

Specialized Disclosure Report

Annual Report Scanned (Paper)

Specialized Disclosure Report

Specialized Disclosure Report

Specialized Disclosure Report

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

No description available

Specialized Disclosure Report

Specialized Disclosure Report

Letter from the SEC

Correspondence with the SEC

Letter from the SEC