BlackRock, Inc. 13D and 13G filings for Ciena Corporation:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2025-04-17 09:35 am Sale |
2025-03-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
13,392,861 9.400% |
-2,903,400 (-17.82%) |
Filing |
| 2024-01-30 4:08 pm Sale |
2023-12-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
16,296,261 11.300% |
-843,663 (-4.92%) |
Filing |
| 2023-01-26 08:52 am Unchanged |
2022-12-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
17,139,924 11.500% |
0 (Unchanged) |
Filing |
| 2023-01-20 09:43 am Purchase |
2022-12-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
17,139,924 11.500% |
1,625,549 (+10.48%) |
Filing |
| 2022-01-27 1:59 pm Unchanged |
2021-12-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
15,514,375 10.000% |
0 (Unchanged) |
Filing |
| 2022-01-25 6:45 pm Sale |
2021-12-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
15,514,375 10.000% |
-362,963 (-2.29%) |
Filing |
| 2021-04-09 6:02 pm Purchase |
2021-03-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
15,877,338 10.200% |
1,085,289 (+7.34%) |
Filing |
| 2021-01-28 5:55 pm Sale |
2020-12-31 | 13G | Ciena Corporation CIEN |
BlackRock Inc. BLK |
14,792,049 9.600% |
-905,993 (-5.77%) |
Filing |