Ciena Corp
Ownership
Ownership Structure
Who owns Ciena Corp (CIEN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.5% of the shares are freely tradable; institutional investors hold 98.0%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 14.96 | 21,209,756 | +0.4 | 03/31/2026 |
| BlackRock Inc | 9.43 | 13,373,787 | -19.8 | 03/31/2026 |
| JPMorgan Chase & Co | 7.21 | 10,226,649 | -5.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.47 | 9,169,355 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.20 | 7,369,124 | +0.0 | 03/31/2026 |
| State Street Corp | 4.45 | 6,309,050 | +23.6 | 03/31/2026 |
| T. Rowe Price Associates, Inc. | 3.70 | 5,242,802 | +29.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Growth Compy Commingled Pl S | 5.34 | 7,566,128 | -4.7 | 07/31/2026 |
| Fidelity Growth Company Fund | 4.06 | 5,756,605 | -4.8 | 07/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 4,502,649 | +0.3 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Smith Gary B | President, CEO | 243,078 | 83,691,755 $ | Sep 1, 2026 | direct |
| Rothenstein David M | SVP and Chief Strategy Officer | 180,231 | 62,053,533 $ | Aug 14, 2026 | direct |
| Graff Marc D. | SVP & Chief Financial Officer | 107,519 | 37,018,792 $ | Aug 14, 2026 | direct |
| DiPerna Dino | SVP Global R&D | 39,624 | 13,642,543 $ | Jul 15, 2026 | direct |
| Gage Brodie | SVP Global Products & Supply | 38,407 | 13,223,530 $ | Aug 17, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 1, 2026 | Smith Gary B | President, CEO | Sell | 2,952 | 362.90 | 1,071,278 |
| Aug 17, 2026 | Gage Brodie | SVP Global Products & Supply | Sell | 1,200 | 439.24 | 527,088 |
| Aug 17, 2026 | Smith Gary B | President, CEO | Sell | 2,952 | 447.78 | 1,321,840 |
| Aug 14, 2026 | Graff Marc D. | SVP & Chief Financial Officer | Sell | 4,995 | 430.72 | 2,151,435 |
| Aug 14, 2026 | Rothenstein David M | SVP and Chief Strategy Officer | Sell | 2,500 | 438.10 | 1,095,250 |
| Aug 3, 2026 | Smith Gary B | President, CEO | Sell | 2,952 | 379.81 | 1,121,212 |
| Aug 1, 2026 | Graff Marc D. | SVP & Chief Financial Officer | Other | 14,441 | 377.05 | 5,444,979 |
| Jul 15, 2026 | Gage Brodie | SVP Global Products & Supply | Sell | 1,200 | 449.15 | 538,980 |
| Jul 15, 2026 | DiPerna Dino | SVP Global R&D | Sell | 391 | 449.15 | 175,618 |
| Jul 15, 2026 | Rothenstein David M | SVP and Chief Strategy Officer | Sell | 2,500 | 420.91 | 1,052,284 |
| Jul 15, 2026 | Smith Gary B | President, CEO | Sell | 2,952 | 421.10 | 1,243,098 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.