Ciena (CIEN): Officer sold ~$552K

~$552K

Approx. value · 2,500 sh @ $220.84

181K

Holds after · shares reported

Traded

Dec 15, 2025

Filed

Dec 17, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Oct 1, 2025InsiderOfficer sold ~$285K of CIEN shares in the open market
2. Oct 15, 2025Insider · 4 peopleInsiders: 5 sales (~$1.8M)
3. Oct 15, 2025CongressDisclosed sale of CIEN — reported range $1,001 - $15,000
4. Oct 30, 2025Congress · 1 personMembers of Congress: 1 purchase, 1 sale
5. Oct 31, 2025CongressDisclosed sale of CIEN — reported range $1,001 - $15,000
6. Nov 3, 2025InsiderCEO sold ~$1.3M of CIEN shares in the open market
7. Nov 10, 2025InsiderCEO sold ~$1.42M of CIEN shares in the open market
8. Nov 17, 2025Insider · 3 peopleInsiders: 4 sales (~$974K)
9. Nov 30, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“Effective November 30, 2025, as part of Ciena Corporation’s (“Ciena’s”) standard three-year review and renewal of its previously disclosed change in control severance agreements, Ciena entered into change in control severance agreements (the “Change in Control Severance Agreements”) in a revised form with each of its executive officers, including among others: Gary B. Smith, President and Chief Executive Officer;…”
10. Dec 3, 2025InsiderCEO sold ~$1.31M of CIEN shares in the open market
11. Dec 4, 20255% stakeBlackRock, Inc. reported a passive stake (13G) of 10.3%
12. Dec 11, 2025Company filing · Form 8-K · ResultsReported its results
13. Dec 15, 2025 · this disclosureInsiderOfficer sold ~$552K of CIEN shares in the open market

What came next

1. Dec 15, 2025Insider · 2 peopleInsiders: 2 sales (~$2.0M)
2. Dec 22, 2025InsiderCEO sold ~$1.59M of CIEN shares in the open market
3. Jan 2, 2026InsiderOfficer sold ~$421K of CIEN shares in the open market
4. Jan 5, 2026Insider · Their largest sale since 2006CEO sold ~$19.2M of CIEN shares in the open market
5. Jan 9, 2026InsiderOfficer sold ~$548K of CIEN shares in the open market
6. Jan 12, 2026Insider · 2 peopleInsiders: 2 sales (~$5.4M)
7. Jan 15, 2026Insider · 4 peopleInsiders: 5 sales (~$7.4M)
8. Jan 21, 20265% stakeJPMORGAN CHASE & CO. reported a passive stake (13G) of 7.7%
9. Feb 2, 2026InsiderCEO sold ~$784K of CIEN shares in the open market
10. Feb 17, 2026Insider · 2 peopleInsiders: 2 sales (~$1.6M)
11. Mar 2, 2026InsiderCEO sold ~$1.05M of CIEN shares in the open market
12. Mar 5, 2026Company filing · Form 8-K · ResultsReported its results
13. Mar 16, 2026Insider · 2 peopleInsiders: 2 sales (~$1.9M)
14. Mar 24, 2026Insider · Their largest sale since 2024Officer sold ~$2.02M of CIEN shares in the open market
15. Mar 26, 20265% stakeThe Vanguard Group reported a passive stake (13G)
16. Mar 27, 2026InsiderOfficer sold ~$700K of CIEN shares in the open market
17. Apr 1, 2026Insider · 3 peopleInsiders: 17 sales (~$11.1M)

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Ciena

For Ciena, OQRO holds 36 insider filings (SEC Form 4 or Form 144), 1 Congress trade report and 2 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its CIEN page.

Other recent filings by David M Rothenstein, SVP and Chief Strategy Officer

• SEC Form 4 at Ciena (CIEN)Oct 19, 2026
• SEC Form 4 at Ciena (CIEN)Sep 18, 2026
• SEC Form 4 at Ciena (CIEN)Aug 19, 2026
• SEC Form 4 at Ciena (CIEN)Jul 17, 2026
• SEC Form 4 at Ciena (CIEN)Jun 18, 2026

The full history of David M Rothenstein, SVP and Chief Strategy Officer is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Ciena

• House Clerk periodic transaction reportNov 10, 2026
• SEC Form 4Nov 4, 2026
• SEC Form 4Oct 19, 2026
• SEC Form 4Oct 19, 2026
• SEC Form 4Oct 19, 2026
• SEC Form 4Oct 19, 2026

Everything OQRO holds on this company is on its CIEN page.