CIEN · Ciena Corp

$378.44 -21.41 (-5.35%) At close · Aug 28

Market Cap

$53.57B

141.55M

The company's filings as submitted to the SEC's EDGAR system — 10-K, 10-Q, 8-K, proxy statements and more — listed most recent first.

Type	Filing Date	Period
8-K	2026-06-11	2026-06-08
8-K	2026-06-08	—
8-K	2026-06-04	—
10-Q	2026-06-04	2026-05-02
8-K	2026-03-31	2026-03-26
8-K	2026-03-05	—
10-Q	2026-03-05	2026-01-31
DEF 14A	2026-02-12	2026-03-26
10-K	2025-12-12	2025-11-01
8-K	2025-12-11	—
8-K	2025-12-04	2025-11-30
8-K	2025-10-07	—
8-K	2025-09-22	—
10-Q	2025-09-04	2025-08-02
8-K	2025-09-04	—
8-K	2025-06-18	—
10-Q	2025-06-05	2025-05-03
8-K	2025-06-05	—
8-K	2025-04-01	2025-03-27
10-Q	2025-03-12	2025-02-01
8-K	2025-03-11	—
DEF 14A	2025-02-13	2025-03-27
8-K	2025-01-21	2025-01-17
10-K	2024-12-20	2024-11-02
8-K	2024-12-12	—
8-K	2024-10-02	—
8-K	2024-09-04	—
10-Q	2024-09-04	2024-07-27
10-Q	2024-06-06	2024-04-27
8-K	2024-06-06	—
8-K	2024-04-23	2024-04-22
8-K	2024-03-26	2024-03-21
8-K	2024-03-07	—
10-Q	2024-03-07	2024-01-27
DEF 14A	2024-02-08	2024-03-21
10-K	2023-12-15	2023-10-28
8-K	2023-12-07	—
8-K	2023-10-25	2023-10-24
8-K	2023-10-03	2023-10-02
10-Q	2023-09-06	2023-07-29
8-K	2023-08-31	—
10-Q	2023-06-07	2023-04-29
8-K	2023-06-06	—
8-K	2023-04-06	—
8-K	2023-04-03	2023-03-30
10-Q	2023-03-08	2023-01-28
8-K	2023-03-06	—
DEF 14A	2023-02-16	2023-03-30
8-K	2023-02-15	2023-02-10
8-K	2023-01-27	2023-01-26

Showing 1–50 of 91 filings

Key facts CIK 936395 CUSIP 171779309 13F (30d) 838 filings 815 filers Visit website Investor relations