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Ciena Corp SEC Filings
What Ciena Corp has told the SEC happened, by the 8-K items and forms it filed under: when it reported results, who joined or left, what it bought or sold, and whether its auditor or its accounts ever changed.
CIEN overview →Filings on file
120
since Nov 4, 2016
Warning signs
0
none filed
Last results
Sep 3, 2026
8-K item 2.02
Industry
Telephone & Telegraph Apparatus
SIC 3661
Newest first
Each label is a form type or an 8-K item as filed; each row links to the filing.
| Filed | What it reports | Document |
|---|---|---|
| Dec 4, 2025 | Executive or director change 8-K | Read ↗ |
| Jun 18, 2025 | Executive or director change 8-K | Read ↗ |
| Dec 12, 2024 | Executive or director changeResults announced 8-K | Read ↗ |
| Sep 4, 2024 | Executive or director changeResults announced 8-K | Read ↗ |
| Apr 23, 2024 | Executive or director change 8-K | Read ↗ |
| Mar 26, 2024 | Executive or director changeChange in control 8-K | Read ↗ |
| Oct 3, 2023 | Executive or director change 8-K | Read ↗ |
| Aug 31, 2023 | Executive or director changeResults announced 8-K | Read ↗ |
| Jan 24, 2023 | Executive or director change 8-K | Read ↗ |
| Apr 6, 2021 | Executive or director changeShareholder vote 8-K | Read ↗ |
| Jul 1, 2020 | Executive or director change 8-K | Read ↗ |
| Apr 6, 2020 | Executive or director changeShareholder vote 8-K | Read ↗ |
| Aug 29, 2019 | Executive or director change 8-K | Read ↗ |
| Oct 18, 2018 | Executive or director change 8-K | Read ↗ |
| Jun 13, 2018 | Executive or director change 8-K | Read ↗ |
| Oct 30, 2017 | Executive or director change 8-K/A | Read ↗ |
| Aug 24, 2017 | Executive or director change 8-K | Read ↗ |
| Mar 29, 2017 | Executive or director change 8-K | Read ↗ |
| Jan 24, 2017 | Executive or director change 8-K | Read ↗ |
| Nov 4, 2016 | Executive or director change 8-K | Read ↗ |
Source: Ciena Corp's EDGAR filing history, the last ten years. The labels are the form types and 8-K item numbers the company filed under, not a reading of what it wrote — an item 5.02 can be a chief executive fired or a director retiring on schedule — so each row links to the filing.
More on CIEN
Company overviewEverything on CIEN in one place, with the price.Insider tradingWhat CIEN's own officers and directors buy and sell.Planned salesSales CIEN insiders have filed notice of.Who owns itEvery manager reporting a position in CIEN.Funds holding itWhich funds and ETFs hold CIEN, and how big a bet.LobbyingWhat CIEN spends lobbying Congress, and on what.Who lobbies for itThe lobbyists on CIEN's account, and who they worked for.Federal contractsWhat federal agencies pay CIEN.PatentsWhat CIEN is filing at the patent office.