Ciena Corporation (CIEN) Insider Trading
Over the last 3 months, CIEN insiders made 0 open-market buys and 18 sales, a net sale of -$16.7M (SEC Form 4). Over the last 6 months, 788 institutions increased and 767 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
18
Net (3m)
-$16.7M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price -34.1%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | Graff Marc D.officer: SVP & Chief Financial Officer | Sell | 4,995 | $430.72 |
| Aug 18, 2026 | SMITH GARY Bdirector, officer: President, CEO | Sell | 2,952 | $447.78 |
| Aug 18, 2026 | Rothenstein David Mofficer: SVP and Chief Strategy Officer | Sell | 2,500 | $438.10 |
| Aug 18, 2026 | Gage Brodieofficer: SVP Global Products & Supply | Sell | 1,200 | $439.24 |
| Aug 4, 2026 | SMITH GARY Bdirector, officer: President, CEO | Sell | 2,952 | $379.81 |
| Aug 4, 2026 | Graff Marc D.officer: SVP & Chief Financial Officer | Tax | 14,441 | $377.05 |
| Jul 17, 2026 | SMITH GARY Bdirector, officer: President, CEO | Sell | 2,952 | $421.10 |
| Jul 17, 2026 | DiPerna Dinoofficer: SVP Global R&D | Sell | 391 | $449.15 |
| Jul 17, 2026 | Rothenstein David Mofficer: SVP and Chief Strategy Officer | Sell | 2,500 | $420.91 |
| Jul 17, 2026 | Gage Brodieofficer: SVP Global Products & Supply | Sell | 1,200 | $449.15 |
| Jul 6, 2026 | SMITH GARY Bdirector, officer: President, CEO | Sell | 2,952 | $468.83 |
| Jul 6, 2026 | Phipps Jasonofficer: SVP Global Sales and Marketing | Sell | 2,629 | $466.20 |
| Jul 6, 2026 | Kosaraju Sheelaofficer: SVP and General Counsel | Sell | 2,013 | $466.20 |
| Jul 6, 2026 | Graff Marc D.officer: SVP & Chief Financial Officer | Sell | 126 | $466.20 |
| Jun 30, 2026 | Cumello Josephofficer: SVP, General Mgr. Blue Planet | Sell | 1,586 | $466.33 |
| Jun 26, 2026 | Graff Marc D.officer: SVP & Chief Financial Officer | Sell | 126 | $449.36 |
| Jun 23, 2026 | Phipps Jasonofficer: SVP Global Sales and Marketing | Tax | 859 | $428.22 |
| Jun 23, 2026 | Cumello Josephofficer: SVP, General Mgr. Blue Planet | Tax | 582 | $428.22 |
| Jun 23, 2026 | Cumello Josephofficer: SVP, General Mgr. Blue Planet | Tax | 332 | $428.22 |
| Jun 23, 2026 | Hoffman Grantofficer: SVP Chief Supply Chain Officer | Grant | 6,517 | — |
| Jun 23, 2026 | DiPerna Dinoofficer: SVP Global R&D | Tax | 204 | $428.22 |
| Jun 23, 2026 | Rothenstein David Mofficer: SVP and Chief Strategy Officer | Tax | 220 | $428.22 |
| Jun 23, 2026 | SMITH GARY Bdirector, officer: President, CEO | Tax | 937 | $428.22 |
| Jun 23, 2026 | Gage Brodieofficer: SVP Global Products & Supply | Tax | 231 | $428.22 |
| Jun 23, 2026 | Gage Brodieofficer: SVP Global Products & Supply | Tax | 442 | $428.22 |
| Jun 23, 2026 | Graff Marc D.officer: SVP & Chief Financial Officer | Tax | 199 | $428.22 |
| Jun 23, 2026 | DiPerna Dinoofficer: SVP Global R&D | Tax | 730 | $428.22 |
| Jun 23, 2026 | SMITH GARY Bdirector, officer: President, CEO | Tax | 1,743 | $428.22 |
| Jun 23, 2026 | Rothenstein David Mofficer: SVP and Chief Strategy Officer | Tax | 204 | $428.22 |
| Jun 23, 2026 | Rothenstein David Mofficer: SVP and Chief Strategy Officer | Tax | 436 | $428.22 |
Source: CIEN SEC Form 4 filings, latest Aug 18, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their CIEN positions over the last 6 months (SEC Form 13F).
Increased
788
New positions
593
Reduced
767
Sold out
108
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 21.2M | May 15, 2026 |
| FMR LLC | Reduced | 19.1M | Aug 13, 2026 |
| BLACKROCK, INC. | Reduced | 13.4M | May 13, 2026 |
| BlackRock, Inc. | Reduced | 12.7M | Aug 7, 2026 |
| JPMORGAN CHASE & CO | Increased | 11.2M | Aug 12, 2026 |
| JPMORGAN CHASE & CO | Reduced | 10.2M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 9.2M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 9.2M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 7.7M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 7.4M | May 8, 2026 |
| STATE STREET CORP | Increased | 6.7M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 6.3M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 5.2M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 4.1M | Aug 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 4.1M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.