Ciena Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

XTRA:CIE1 Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
17 Aug 26	Sell€455,035	Brodie Gage	Individual	1,200	€379.20
17 Aug 26	Sell€1,141,145	Gary Smith	Individual	2,952	€386.57
14 Aug 26	Sell€1,858,195	Marc Graff	Individual	4,995	€372.01
02 Jan 26	Sell€358,668	Sheela Kosaraju	Individual	1,748	€205.19
15 Dec 25	Sell€1,634,057	Thomas Nevens	Individual	8,554	€191.03
01 Oct 25	Sell€242,575	Jason Phipps	Individual	1,984	€122.27
24 Sep 25	Sell€1,009,500	Bruce Claflin	Individual	8,461	€119.31

Insider Trading Volume

Insider Buying: CIE1 insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of CIE1?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	35,231	0.0248%
State or Government	145,980	0.103%
Individual Insiders	494,574	0.349%
General Public	12,391,737	8.74%
Institutions	128,741,003	90.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 63.81% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
13.4%	FMR LLC	19,043,155	€5.5b	-10.2%	0.26%
8.97%	BlackRock, Inc.	12,718,494	€3.7b	-4.9%	0.04%
7.08%	Vanguard Capital Management, LLC	10,046,148	€2.9b	0.84%	0.05%
5.42%	Vanguard Portfolio Management, LLC	7,680,665	€2.2b	4.23%	0.11%
4.71%	State Street Investment Management	6,680,578	€1.9b	5.89%	0.06%
3.06%	T. Rowe Price Group, Inc.	4,343,274	€1.3b	-23.3%	0.11%
2.89%	JP Morgan Asset Management	4,099,109	€1.2b	-49.9%	0.11%
2.38%	Geode Capital Management, LLC	3,370,462	€972.8m	-17.1%	0.05%
1.7%	Capital Research and Management Company	2,412,156	€696.2m	-46.1%	0.03%
1.31%	American Century Investment Management Inc	1,851,788	€534.5m	246%	0.2%
1.2%	Norges Bank Investment Management	1,703,155	€491.6m	110%	0.03%
1.18%	Arrowstreet Capital, Limited Partnership	1,677,029	€484.0m	20.8%	0.22%
1.06%	UBS Asset Management AG	1,507,777	€435.2m	0.51%	0.03%
1.06%	JPMorgan Chase & Co.	1,498,853	€432.6m	-49.9%	0.06%
0.99%	Invesco Capital Management LLC	1,404,367	€405.3m	19.2%	0.05%
0.93%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	1,318,769	€380.6m	70.1%	0.09%
0.88%	Charles Schwab Investment Management, Inc.	1,248,995	€360.5m	-1.83%	0.04%
0.86%	Northern Trust Global Investments	1,217,939	€351.5m	2.58%	0.04%
0.81%	Dimensional Fund Advisors LP	1,153,229	€332.9m	0.63%	0.04%
0.72%	AQR Capital Management, LLC	1,025,631	€296.0m	7.51%	0.11%
0.72%	Managed Account Advisors LLC	1,016,983	€293.5m	-4.33%	0.04%
0.68%	BNPP Asset Management Holding	967,416	€279.2m	5.71%	0.32%
0.63%	Legal & General Investment Management Limited	887,054	€256.0m	36.8%	0.05%
0.57%	Eaton Vance Management	814,088	€235.0m	20.9%	0.04%
0.57%	BNY Asset Management	807,841	€233.2m	-10.1%	0.04%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/09/11 20:36
End of Day Share Price	2026/09/11 00:00
Earnings	2026/08/01
Annual Earnings	2025/11/01

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Ciena Corporation is covered by 38 analysts. 17 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
James Kelleher	Argus Research Company
Timothy Long	Barclays
Jeffrey Kvaal	Barclays