Public ownership evidence

Ciena Corporation (CIEN) Ownership Disclosures

Read CIEN insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Ciena Corporation: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-06
Trade date
2026-10-01
Reporting owners
Graff Marc D.
Code
S
Shares
97
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0002080157-26-000015
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read CIEN fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read CIEN fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-10-062026-10-01Graff Marc D.S97Not reported
2026-10-062026-10-01Kosaraju SheelaS2,101Not reported
2026-10-062026-10-01Phipps JasonS2,629Not reported
2026-09-292026-09-25Cumello JosephS1,586Not reported
2026-09-282026-09-24Claflin Bruce L.S2,857Not reported
2026-09-252026-09-23NEVENS THOMAS MICHAELS3,738Not reported
2026-09-172026-09-15SMITH GARY BS2,952Not reported
2026-09-172026-09-15Rothenstein David MS2,500Not reported
2026-09-172026-09-15Gage BrodieS1,200Not reported
2026-09-172026-09-16DiPerna DinoS249Not reported
2026-09-172026-09-15DiPerna DinoS249Not reported
2026-09-032026-09-01SMITH GARY BS2,952Not reported
2026-08-192026-08-14Graff Marc D.S4,995Not reported
2026-08-192026-08-17Gage BrodieS1,200Not reported
2026-08-192026-08-14Rothenstein David MS2,500Not reported
2026-08-192026-08-17SMITH GARY BS2,952Not reported
2026-08-052026-08-03SMITH GARY BS2,952Not reported
2026-07-182026-07-15Gage BrodieS1,200Not reported
2026-07-182026-07-15DiPerna DinoS391Not reported
2026-07-182026-07-15DiPerna DinoS391Not reported
2026-07-182026-07-15Rothenstein David MS2,500Not reported
2026-07-182026-07-15SMITH GARY BS2,952Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2941$20,113None
Cornerstone Financial Management LLC2026-03-312026-08-2924$9,318None
Cornerstone Financial Management LLC2025-12-312026-08-2921$4,911None
Advisors Asset Management, Inc.2021-12-312026-08-2811,720$902,088None
Advisors Asset Management, Inc.2020-06-302026-08-2811,612$628,906None
Advisors Asset Management, Inc.2022-06-302026-08-283,768$172,000None
Advisors Asset Management, Inc.2021-09-302026-08-2816,642$855,000None
Corient Private Wealth LP2026-06-302026-08-2831,252$15,330,998None
Corient Private Wealth LP2026-06-302026-08-283,200$1,569,792None
Formuepleje A/S2026-06-302026-08-281,648$808,443None
Principia Wealth Advisory, LLC2026-06-302026-08-2712$5,887None
Principia Wealth Advisory, LLC2026-03-312026-08-2712$4,659None
Advisors Asset Management, Inc.2024-03-312026-08-27683$33,774None
Advisors Asset Management, Inc.2025-03-312026-08-275,109$308,737None
Advisors Asset Management, Inc.2022-09-302026-08-273,730$151,000None
Advisors Asset Management, Inc.2020-12-312026-08-2724,950$1,319,000None
Advisors Asset Management, Inc.2022-03-312026-08-276,839$414,649None
Advisors Asset Management, Inc.2023-06-302026-08-27564$23,964None
Advisors Asset Management, Inc.2023-09-302026-08-27698$32,987None
Advisors Asset Management, Inc.2021-03-312026-08-2722,526$1,232,623None
Advisors Asset Management, Inc.2021-06-302026-08-2721,561$1,227,000None
Advisors Asset Management, Inc.2020-09-302026-08-2717,158$681,001None
Advisors Asset Management, Inc.2025-09-302026-08-276,599$961,276None
Advisors Asset Management, Inc.2023-12-312026-08-27691$31,102None
Dakota Wealth Management2026-03-312026-08-276,001$2,329,769None
Advus Financial Partners, LLC2026-06-302026-08-26575$282,072None
Groupe la Francaise2026-06-302026-08-2624,275$11,911,470None
Advisors Asset Management, Inc.2019-12-312026-08-264,996$213,279None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-2623,740$11,645,894None
Advisors Asset Management, Inc.2025-06-302026-08-256,702$545,074None
CYBER HORNET ETFs LLC2026-06-302026-08-25386$189,356None
First Eagle Investment Management, LLC2026-06-302026-08-252,000$981,120None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25213,528$104,748,296None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25104,748,296$213,528,000None
Advisors Asset Management, Inc.2024-06-302026-08-22628$30,257None
Advisors Asset Management, Inc.2024-12-312026-08-223,537$299,973None
Advisors Asset Management, Inc.2025-12-312026-08-226,526$1,526,236None
Advisors Asset Management, Inc.2020-03-312026-08-225,335$212,386None
WEST MICHIGAN ADVISORS, LLC2026-06-302026-08-228,375$4,108,440None
Assenagon Asset Management S.A.2026-06-302026-08-22214,002$104,980,821None
HARVEY CAPITAL MANAGEMENT INC2026-06-302026-08-221,200$588,672None
Harvest Fund Management Co., Ltd2026-06-302026-08-21125$61,000None
Kingsview Wealth Management, LLC2026-06-302026-08-20511$250,676None
Archer Investment Corp2026-06-302026-08-201,518$744,670None
CANTOR FITZGERALD, L. P.2026-06-302026-08-2012,249$6,008,869None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2037,220$18,258,689None
Beacon Pointe Advisors, LLC2026-06-302026-08-197,387$3,623,767None
Copia Wealth Management2026-06-302026-08-1924$11,773None
Advisors Asset Management, Inc.2019-03-312026-08-198,296$309,773None
Advisors Asset Management, Inc.2019-09-302026-08-191,715$67,279None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗Corient Private Wealth LP ↗Formuepleje A/S ↗

Recent Congressional disclosures

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Ro Khanna2026-10-082026-09-25sale$1,001 - $15,000
Ro Khanna2026-10-082026-09-11sale$1,001 - $15,000

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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