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Technology · Communications Equipment · NYSE

CIENCiena

CIEN quote by TradingView
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Filings with the SEC since Jan 26, 2021

1,000 filings, 10 in the last 30 days

SEC filing index
Latest annual reportOpen ↗
Dec 12, 2025
10-K, period to Nov 1, 2025
Latest quarterly reportOpen ↗
Sep 3, 2026
10-Q, period to Aug 1, 2026
Latest current reportOpen ↗
Sep 3, 2026
8-K: Quarterly results
Filed in the last 30 days
10
of 1,000 in all
Timeline

Every filing on one line

1 yr2 yr3 yr
Annual report (10-K)Quarterly report (10-Q)Current report (8-K)Auditor changeCEO, CFO, COO or CAO changeRestatementLate filing noticeInsider purchaseCluster buy (3+ insiders)SEC comment letterShare offering (S-3, 424B)
All 25 events

From the SEC filing index. Insider purchases go back 180 days (the Form 4s downloaded).

Every filing

Newest first, by kind

Each form links to sec.gov
All 1000 Annual & quarterly 23Current reports (8-K) 52Insiders 875Proxy & votes 14Big owners (13D/13G) 24Shares & debt offered 2Other 10
FiledFormWhat it isPeriod
Nov 4, 20264 Insider tradeNov 2, 2026 all files
Nov 3, 20264 Insider tradeNov 1, 2026 all files
Oct 19, 20264 Insider tradeOct 15, 2026 all files
Oct 19, 20264 Insider tradeOct 15, 2026 all files
Oct 19, 20264 Insider tradeOct 15, 2026 all files
Oct 19, 20264 Insider tradeOct 15, 2026 all files
Oct 15, 2026144 Notice of planned insider sale all files
Oct 15, 2026144 Notice of planned insider sale all files
Oct 15, 2026144 Notice of planned insider sale all files
Oct 15, 2026144 Notice of planned insider sale all files
Oct 13, 20264 Insider tradeOct 1, 2026 all files
Oct 6, 20264 Insider tradeOct 1, 2026 all files
Oct 6, 20264 Insider tradeOct 1, 2026 all files
Oct 6, 20264 Insider tradeOct 1, 2026 all files
Oct 1, 2026144 Notice of planned insider sale all files
Oct 1, 2026144 Notice of planned insider sale all files
Oct 1, 2026144 Notice of planned insider sale all files
Sep 29, 20264 Insider tradeSep 25, 2026 all files
Sep 28, 20264 Insider tradeSep 24, 2026 all files
Sep 25, 2026144 Notice of planned insider sale all files
Sep 25, 20264 Insider tradeSep 23, 2026 all files
Sep 23, 2026144 Notice of planned insider sale all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 22, 20264 Insider tradeSep 20, 2026 all files
Sep 17, 20264 Insider tradeSep 15, 2026 all files
Sep 17, 20264 Insider tradeSep 15, 2026 all files
Sep 17, 20264 Insider tradeSep 15, 2026 all files
Sep 17, 20264 Insider tradeSep 15, 2026 all files
Sep 16, 2026144 Notice of planned insider sale all files
Sep 15, 2026144 Notice of planned insider sale all files
Sep 15, 2026144 Notice of planned insider sale all files
Sep 15, 2026144 Notice of planned insider sale all files
Sep 3, 202610-Q Quarterly reportAug 1, 2026 all files · tables
Sep 3, 20268-K Quarterly resultsSep 3, 2026 all files
Sep 2, 20264 Insider tradeSep 1, 2026 all files
Aug 18, 20264 Insider tradeAug 14, 2026 all files
Aug 18, 20264 Insider tradeAug 17, 2026 all files
Aug 18, 20264 Insider tradeAug 14, 2026 all files
Aug 18, 20264 Insider tradeAug 17, 2026 all files
Aug 17, 2026144 Notice of planned insider sale all files
Aug 14, 2026144 Notice of planned insider sale all files
Aug 14, 2026144 Notice of planned insider sale all files
Aug 6, 2026SCHEDULE 13G/A 5%+ owner (passive), amended all files
Aug 4, 20264 Insider tradeAug 1, 2026 all files
Aug 4, 20264 Insider tradeAug 3, 2026 all files
Jul 17, 20264 Insider tradeJul 15, 2026 all files
Jul 17, 20264 Insider tradeJul 15, 2026 all files
Jul 17, 20264 Insider tradeJul 15, 2026 all files
Jul 17, 20264 Insider tradeJul 15, 2026 all files
Jul 15, 2026144 Notice of planned insider sale all files
Jul 15, 2026144 Notice of planned insider sale all files
Jul 15, 2026144 Notice of planned insider sale all files
Jul 15, 2026144 Notice of planned insider sale all files
Jul 6, 20264 Insider tradeJul 1, 2026 all files
Jul 6, 20264 Insider tradeJul 1, 2026 all files
Jul 6, 20264 Insider tradeJul 1, 2026 all files
Jul 6, 20264 Insider tradeJul 1, 2026 all files
Jul 1, 2026144 Notice of planned insider sale all files
Jul 1, 2026144 Notice of planned insider sale all files
Jul 1, 2026144 Notice of planned insider sale all files
Jun 30, 20264 Insider tradeJun 26, 2026 all files
Jun 26, 20264 Insider tradeJun 24, 2026 all files
Jun 26, 2026144 Notice of planned insider sale all files
Jun 24, 2026144 Notice of planned insider sale all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 23, 20264 Insider tradeJun 22, 2026 all files
Jun 23, 20263 New insiderJun 22, 2026 all files
Jun 23, 20264 Insider tradeJun 20, 2026 all files
Jun 17, 20264 Insider tradeJun 15, 2026 all files
Jun 17, 20264 Insider tradeJun 15, 2026 all files
Jun 17, 20264 Insider tradeJun 15, 2026 all files
Jun 15, 2026144 Notice of planned insider sale all files
Jun 15, 2026144 Notice of planned insider sale all files
Jun 11, 20268-K Material agreement signed, New debt or obligation, Unregistered share sale, Other eventsJun 8, 2026 all files
Jun 8, 20268-K Other eventsJun 8, 2026 all files
Jun 4, 202610-Q Quarterly reportMay 2, 2026 all files · tables
Jun 4, 20268-K Quarterly resultsJun 4, 2026 all files
Jun 2, 20264 Insider tradeJun 1, 2026 all files
May 28, 2026SD Conflict minerals report all files
May 19, 20264 Insider tradeMay 15, 2026 all files
May 19, 20264 Insider tradeMay 15, 2026 all files
May 19, 20264 Insider tradeMay 15, 2026 all files
May 15, 2026144 Notice of planned insider sale all files
May 15, 2026144 Notice of planned insider sale all files
May 4, 20264 Insider tradeMay 1, 2026 all files
Apr 29, 2026SCHEDULE 13G 5%+ owner (passive) all files
Apr 29, 2026SCHEDULE 13G 5%+ owner (passive) all files
Show the other 75 filings on this page

Press releases with quarterly results are attached to the 8-Ks marked "Quarterly results"; read them on Earnings releases.

Next Earnings releases →