SEC Form 4 · Updated Daily
CIEN
— CIENA CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| SMITH GARY B | Director · Officer | 243,078 | 2026-09-01 | S |
| Rothenstein David M | Officer | 180,231 | 2026-08-14 | S |
| Graff Marc D. | Officer | 107,519 | 2026-08-14 | S |
| Kosaraju Sheela | Officer | 88,081 | 2026-07-01 | S |
| Phipps Jason | Officer | 62,382 | 2026-07-01 | S |
| Cumello Joseph | Officer | 42,872 | 2026-06-26 | S |
| DiPerna Dino | Officer | 39,624 | 2026-07-15 | S |
| Gage Brodie | Officer | 38,407 | 2026-08-17 | S |
| Hoffman Grant | Officer | 6,517 | 2026-06-22 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-01 | SMITH GARY B | Open-market sale | 2,952 | $362.90 | 243,078 |
| 2026-08-17 | Gage Brodie | Open-market sale | 1,200 | $439.24 | 38,407 |
| 2026-08-17 | SMITH GARY B | Open-market sale | 2,952 | $447.78 | 246,030 |
| 2026-08-14 | Rothenstein David M | Open-market sale | 2,500 | $438.10 | 180,231 |
| 2026-08-14 | Graff Marc D. | Open-market sale | 4,995 | $430.72 | 107,519 |
| 2026-08-03 | SMITH GARY B | Open-market sale | 2,952 | $379.81 | 248,982 |
| 2026-08-01 | Graff Marc D. | Tax withholding | 14,441 | $377.05 | 112,514 |
| 2026-07-15 | DiPerna Dino | Open-market sale | 391 | $449.15 | 39,624 |
| 2026-07-15 | DiPerna Dino | Open-market sale | 391 | $449.15 | 40,015 |
| 2026-07-15 | Gage Brodie | Open-market sale | 1,200 | $449.15 | 39,607 |
| 2026-07-15 | Rothenstein David M | Open-market sale | 2,500 | $420.91 | 182,731 |
| 2026-07-15 | SMITH GARY B | Open-market sale | 2,952 | $421.10 | 251,934 |
| 2026-07-01 | SMITH GARY B | Open-market sale | 2,952 | $468.83 | 254,886 |
| 2026-07-01 | Phipps Jason | Open-market sale | 2,629 | $466.20 | 62,382 |
| 2026-07-01 | Graff Marc D. | Open-market sale | 126 | $466.20 | 126,955 |
| 2026-07-01 | Kosaraju Sheela | Open-market sale | 2,013 | $466.20 | 88,081 |
| 2026-06-26 | Cumello Joseph | Open-market sale | 1,586 | $466.33 | 42,872 |
| 2026-06-24 | Graff Marc D. | Open-market sale | 126 | $449.36 | 127,081 |
| 2026-06-22 | Hoffman Grant | Grant / award | 6,517 | $0.00 | 6,517 |
| 2026-06-20 | Cumello Joseph | Tax withholding | 180 | $428.22 | 44,458 |
| 2026-06-20 | Cumello Joseph | Tax withholding | 332 | $428.22 | 44,638 |
| 2026-06-20 | Cumello Joseph | Tax withholding | 582 | $428.22 | 44,970 |
| 2026-06-20 | Cumello Joseph | Tax withholding | 182 | $428.22 | 45,552 |
| 2026-06-20 | Cumello Joseph | Tax withholding | 441 | $428.22 | 45,734 |
| 2026-06-20 | DiPerna Dino | Tax withholding | 248 | $428.22 | 40,406 |
| 2026-06-20 | DiPerna Dino | Tax withholding | 428 | $428.22 | 40,654 |
| 2026-06-20 | DiPerna Dino | Tax withholding | 730 | $428.22 | 41,082 |
| 2026-06-20 | DiPerna Dino | Tax withholding | 444 | $428.22 | 41,812 |
| 2026-06-20 | DiPerna Dino | Tax withholding | 204 | $428.22 | 42,256 |
| 2026-06-20 | Gage Brodie | Tax withholding | 231 | $428.22 | 40,807 |
| 2026-06-20 | Gage Brodie | Tax withholding | 388 | $428.22 | 41,038 |
| 2026-06-20 | Gage Brodie | Tax withholding | 669 | $428.22 | 41,426 |
| 2026-06-20 | Gage Brodie | Tax withholding | 442 | $428.22 | 42,095 |
| 2026-06-20 | Gage Brodie | Tax withholding | 204 | $428.22 | 42,537 |
| 2026-06-20 | Kosaraju Sheela | Tax withholding | 198 | $428.22 | 90,094 |
| 2026-06-20 | Kosaraju Sheela | Tax withholding | 345 | $428.22 | 90,292 |
| 2026-06-20 | Kosaraju Sheela | Tax withholding | 578 | $428.22 | 90,637 |
| 2026-06-20 | Kosaraju Sheela | Tax withholding | 728 | $428.22 | 91,215 |
| 2026-06-20 | Kosaraju Sheela | Tax withholding | 164 | $428.22 | 91,943 |
| 2026-06-20 | Phipps Jason | Tax withholding | 268 | $428.22 | 65,011 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.