Welcome to our dedicated page for Ciena SEC filings (Ticker: CIEN), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
This page provides access to Ciena Corporation (NYSE: CIEN) filings with the U.S. Securities and Exchange Commission, along with AI-powered tools to help interpret the information. Ciena is a Delaware corporation based in Hanover, Maryland and is categorized in the telephone apparatus manufacturing industry. Its SEC filings document financial performance, material events, governance matters, and other disclosures relevant to investors and analysts.
Ciena regularly files Form 8-K current reports to announce significant events. Recent examples include 8-Ks reporting fiscal quarterly and year-end financial results, which present revenue from products and services and segment data for Networking Platforms, Platform Software and Services, Blue Planet Automation Software and Services, and Global Services. Other 8-K filings describe material events such as the entry into and completion of the acquisition of Nubis Communications, Inc., and changes to executive change in control severance agreements.
Through this page, users can also review Ciena’s periodic reports, such as annual and quarterly reports when available, which typically include detailed financial statements, management’s discussion of results, and information about business segments and risk factors. In addition, filings related to executive compensation and governance, referenced in the company’s proxy statements, provide context on compensation practices and potential payments upon termination or change in control.
The platform enhances these filings with AI-powered summaries and highlights that explain key sections, such as revenue composition, segment performance, and descriptions of material transactions. Real-time updates from EDGAR help ensure that new Ciena filings, including future 10-Ks, 10-Qs, and Form 4 insider transaction reports when filed, are quickly available with simplified explanations to support deeper analysis of the company’s regulatory disclosures.
Ciena Corporation announced the completion of its acquisition of privately-held Nubis Communications, Inc. on October 7, 2025. Nubis is described as a developer of high-performance, ultra-compact, low-power optical and electrical interconnects designed to support artificial intelligence (AI) workloads. The notice confirms the transaction has closed but contains no financial terms, purchase price, or integration details in the provided excerpt.
Gary B. Smith, who is listed as President, CEO and a Director of CIENA CORP (CIEN), reported a sale of common stock on 10/01/2025. The filing shows 6,800 shares were disposed of under transaction code S at a weighted average price of $149.8764, leaving 282,070 shares beneficially owned after the sale. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan dated 9/11/2024. The reported share total includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). The Form 4 was signed on 10/02/2025.
T. Michael Nevens, a director of CIENA CORP (CIEN), reported a change in beneficial ownership dated 09/30/2025. The filing shows a disposition of 5,770 common shares under transaction code G, which the filer explains were given as a gift with no consideration received. After the reported transaction the reporting person beneficially owns 17,976 shares; the filing notes this total includes unvested Restricted Stock Units (RSUs). The Form 4 was filed individually by the reporting person and signed on behalf of the filer by Michelle Rankin.
Form 144 filed for CIENA CORP (CIEN) reports a proposed sale of 1,747 restricted common shares through Morgan Stanley Smith Barney LLC with an aggregate market value of $250,554.74. The filer reports 141,055,908 shares outstanding for the class and identifies an approximate sale date of 10/01/2025.
The securities were acquired as restricted stock from the issuer on 09/20/2025, with payment and acquisition dates matching 09/20/2025. The filer indicates no securities sold in the past three months for the account. The notice includes the required representation that the seller is not aware of undisclosed material adverse information.
CIENA Corp (CIEN) Form 144 notice: A proposed sale of 1,984 shares of common stock is reported through Morgan Stanley Smith Barney LLC, with an aggregate market value of $284,545.28 and approximately 141,055,908 shares outstanding. The filing lists an approximate sale date of 10/01/2025 on the NYSE. The securities are described as restricted stock acquired from the issuer on 09/20/2025, and no securities were reported sold by the reporting person in the prior three months. The filer affirms they are not aware of any undisclosed material adverse information and includes the standard signature and criminal liability notice.
CIENA CORP (CIEN) Form 144 disclosure: This notice reports a proposed sale of 1,863 common shares (restricted stock units) delivered on 09/20/2025, with an aggregate market value of $255,547.71, to be sold through Morgan Stanley Smith Barney on the NYSE approximately on 09/26/2025. The filer also disclosed prior 10b5-1 sales of 2,044 shares on 06/27/2025 for gross proceeds of $166,862.14. The securities were acquired from the issuer as RSUs and payment is noted as completed on the acquisition date.
Bruce L. Claflin, a director of CIENA CORP (CIEN), reported changes in his beneficial ownership on a Form 4 covering transactions dated 09/24/2025. The filing shows a sale of 8,461 shares at $140.12 and a gift of 4,386 shares for no consideration, leaving Mr. Claflin with 50,238 shares beneficially owned directly. The filing also discloses 11,136 shares held indirectly in a spousal trust for which he disclaims beneficial ownership. The reported holdings include unvested restricted stock units (RSUs). The Form 4 was signed on behalf of Mr. Claflin on 09/25/2025.
CIENA Corporation (CIEN) filed a Form 144 notifying the proposed sale of 8,461 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $1,185,555.32. The shares are scheduled for sale on or about 09/24/2025 on the NYSE. The filer acquired the shares as restricted stock on 03/20/2016 from the issuer and paid in full on that date. The filing reports 141,055,908 shares outstanding and states there were no securities sold by the filer in the past three months. The notice includes the standard representation that the seller is not aware of undisclosed material adverse information.
Joseph Cumello, Senior Vice President and General Manager, Blue Planet at Ciena Corporation (CIEN), reported insider dispositions on 09/20/2025. The Form 4 shows five dispositions coded "F" (tax-withholding related) of common stock at $138.37 per share: 441, 182, 582, 331, and 268 shares. The explanatory notes state these were shares withheld to satisfy tax liabilities arising from previously granted restricted stock unit (RSU) awards and that reported holdings include unvested RSUs and performance stock units (PSUs). Following the transactions, the filing shows beneficial ownership figures in the range of 45,394 to 46,757 shares, reported as direct holdings.
Gary B. Smith, President and CEO of CIENA CORP (CIEN), reported a set of non-derivative dispositions on 09/20/2025 totaling 9,487 shares sold at $138.37 per share. The transactions represent shares withheld to cover tax liabilities related to previously granted restricted stock unit awards dated 12/13/2022, 12/12/2023, 12/17/2024 and 12/14/2021. Following these transactions the filing reports 288,870 shares beneficially owned, which the form notes include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). The Form 4 was signed on 09/22/2025.