Arista Networks

Current directors and officers who also hold a role at another S&P 500 company.

• Lewis ChewCDNS · DirectorISRG · Director
• Charles H. GiancarloP · CEO

Latest Schedule 13D/13G filing per holder. Holders that reported falling below 5% are not shown. Index funds usually report once a year.

No 5% holder filings parsed yet for this company.

Open-market purchases and sales reported on Form 4. Grants, option exercises and tax withholding are excluded.

Every 8-K with Item 5.02 (departure, election or appointment of directors and officers). The text is the first paragraph of the item.

1. Sep 8, 2025

   On September 5, 2025, the Board of Directors (the “Board”) of Arista Networks, Inc. (the “Company”) appointed Kenneth Duda, the Company’s current Chief Technology Officer and Senior Vice President, Engineering, as the Company’s President and Chief Technology Officer, effective immediately. Mr. Duda’s expanded role will oversee cloud and AI systems engineering and business development. Mr. Duda, age 54, is one of our founders and has served in various roles with us from 2004 to present. Mr. Duda has served as a member of our board of directors since December 2023. Since September 2011, Mr. Duda has served as our Chief Technology Officer and Senior Vice President of Software Engineering. Mr. Duda holds B.S. and M.S. degrees in Computer Science and Electrical Engineering from the Massachusetts Institute of Technology and a Ph.D. degree in Computer Science from Stanford University.

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2. Jun 16, 2025

   On June 13, 2025 , Arista Networks, Inc. (the “Company”) appointed Todd Nightingale, age 45, to serve as the Company’s President and Chief Operating Officer. Mr. Nightingale will join the Company on or about July 1, 2025. Mr. Nightingale has served as the Chief Executive Officer and member of the Board of Directors of Fastly, Inc. from September 2022 to June 2025. Prior to Fastly, Inc., Mr. Nightingale served as the Executive Vice President and General Manager of Enterprise Networking and Cloud at Cisco Systems, Inc. from March 2020 to September 2022. Mr. Nightingale served as the Senior Vice President and General Manager of Cisco Meraki from June 2016 to March 2020. Prior to that, he held various roles as a Vice President at Cisco Meraki. Mr.

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3. May 6, 2025

   Resignation of Marc Taxay as General Counsel On May 1, 2025, Marc Taxay, the Company’s General Counsel, notified the company of his intention to resign from the Company effective May 7, 2025. Mr. Taxay’s decision was not the result of any disagreement with the Company. The Company and Board thank Mr. Taxay for his exceptional service and significant contributions during his tenure and wish him the best in future endeavors.

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4. Mar 17, 2025

   (d) Election of New Director. On March 14, 2025, the Board of Directors (the “Board”) of Arista Networks, Inc. (“Arista”) increased the size of the Board to nine members and appointed Greg Lavender to serve as an independent member of Arista’s Board, effective immediately. Mr. Lavender will serve as a Class III director with a term expiring at Arista’s 2026 annual meeting of stockholders. Dr. Lavender was also appointed to the Audit Committee of the Board, effective immediately. Dr. Lavender, age 64, serves as the Chief Technology Officer for Intel Corporation, a semiconductor manufacturing company, since November 2023. Prior to becoming the Chief Technology Officer at Intel Corporation, Dr. Lavender was the Corporate Chief Technology Officer and Senior Vice President / General Manager of the Software and Advanced Technology Group of Intel Corporation from June 2021 to November 2023.

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5. Apr 23, 2024

   2014 Equity Incentive Plan On April 16, 2024, the Board of Directors (the “Board”) of Arista Networks, Inc. (the “Company”), acting upon the recommendation of the Board’s Compensation Committee, adopted an amended and restated Arista Networks, Inc. 2014 Equity Incentive Plan (the “Restated Plan”), effective April 17, 2024 (the “Effective Date”), subject to approval of the Company’s stockholders at the Company’s 2024 Annual Meeting of Stockholders. The Restated Plan provides for the grant of equity-based awards, including stock options, restricted stock units, restricted stock, stock appreciation rights, and performance awards.

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6. Apr 19, 2024

   Resignation of Anshul Sadana as Chief Operating Officer On April 18, 2024, Anshul Sadana, the Company’s Chief Operating Officer, notified the Company of his intention to resign from the Company effective May 21, 2024. Mr. Sadana’s decision was not the result of any disagreement with the Company. In advance of his departure, the Company wishes to thank Mr. Sadana for his leadership and many contributions over the past sixteen years.

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7. Dec 1, 2023

   Appointment of Chief Financial Officer; Departure of Chief Financial Officer On December 1, 20 23, Arista Networks, Inc. (the “Company”) announced the appointment of Chantelle Breithaupt to serve as the Company’s Senior Vice President, Chief Financial Officer. Ms. Breithaupt will join the Company on or about January 4, 2024 and will formally assume the duties of the Company's principal financial officer and principal accounting officer immediately following the filing of the Company's Form 10-K for the fiscal year ending December 31, 2023. Ms. Breithaupt, age 51, has served as Senior Vice President and Chief Financial Officer of Aspen Technology from March 2021 to present. Prior to Aspen Technology, Chantelle spent 7 years with Cisco Systems Inc.

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8. Jul 31, 2023

   On July 27, 2023, Ita Brennan, the Company’s Senior Vice President, Chief Financial Officer, notified the Company of her intention to retire in 2024, effective after the Company has hired her replacement to ensure a smooth and orderly transition of her responsibilities. Ms. Brennan’s decision was not the result of any disagreement with the Company. In advance of her departure, the Company wishes to thank Ms. Brennan for her extraordinary leadership and many contributions over the past eight years.

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9. Jul 25, 2022

   (d) Election of New Director. On July 21, 2022, the Board of Directors (the “Board”) of Arista Networks, Inc. (“Arista”) increased the size of the Board to nine members and appointed Yvonne Wassenaar to serve as an independent member of Arista’s Board effective immediately. Ms. Wassenaar will serve as a Class II director with a term expiring at Arista’s 2025 annual meeting of stockholders. Ms. Wassenaar was also appointed to the Nominating and Corporate Governance Committee of the Board. Ms. Wassenaar, age 53, serves as a board member for Forrester Research, Inc., a research and advisory company, since June 2017, where she serves on the audit committee. She also served as a board member for Anaplan, Inc., a cloud based business planning software company, from November 2019 until it was acquired in June 2022, and as a board member of Mulesoft, Inc.

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10. Mar 29, 2022

    On March 28, 2022, Ann Mather, a Class II director, notified Arista Networks, Inc. (the “Company”) that she will not stand for re-election as a director at the end of her current term and intends to resign from the board of directors of the Company (“Board”), effective as of the date of the Company’s 2022 Annual Meeting of Stockholders (the “Effective Date”). Ms. Mather’s decision to leave the Board is due to her desire to devote more time to her other professional commitments and is not the result of any disagreement with the Company relating to the Company’s operations, policies or practices. In accordance with the Company’s Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws, the Board will reduce the number of directors of the Company from nine to eight as of the Effective Date. The Board and the Company thank Ms.

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11. Jul 20, 2021

    (d) Election of New Director. On July 19, 2021, the Board of Directors (the “Board”) of Arista Networks, Inc. (“Arista”) increased the size of the Board to nine members and appointed Lewis Chew to serve as an independent member of Arista’s Board effective immediately. Mr. Chew will serve as a Class III director with a term expiring at Arista’s 2023 annual meeting of stockholders. Mr. Chew was also appointed to the Audit Committee of the Board. Mr. Chew, 58, has served as Executive Vice President and Chief Financial Officer of Dolby Laboratories, Inc., an audio, voice and imaging technology company, since June 2012. Mr. Chew also has served as a board member and audit committee chair of Cadence Design Systems, Inc., a provider of software, hardware, and system design tools to enable the design and development of electronic products, since 2020. Previously, Mr.

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12. Jul 13, 2020

    (d) Election of New Director. On July 10, 2020, the Board of Directors (the “Board”) of Arista Networks, Inc. (“Arista”) increased the size of the Board to eight members and appointed Kelly Battles to serve as an independent member of Arista’s Board effective immediately. Ms. Battles will serve as a Class I director with a term expiring at Arista’s 2021 annual meeting of stockholders. Ms. Battles was also appointed to the Audit Committee of the Board. Ms. Battles, 53, served as the Chief Financial Officer of Quora, a knowledge platform, from November 2016 to March 2020 and currently serves as an advisor to Quora. Ms. Battles also has served as a board member and audit committee chairperson of DataStax, a data management company, since June 2018. Previously, Ms. Battles served as Chief Financial Officer of Bracket Computing from May 2013 to May 2016.

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13. Feb 14, 2019

    Appointment of Chief Operating Officer On February 14, 2019, the Company announced the promotion of Anshul Sadana to Senior Vice President and Chief Operating Officer of the Company. The promotion will become effective on March 4, 2019. Mr. Sadana will assume the duties of the Company's chief operating officer until such time as his successor is appointed, or until his earlier resignation or removal. Anshul Sadana has served as the Company’s Chief Customer Officer since October 2016, as the Company’s Senior Vice President of Customer Engineering from January 2012 through September 2016 and in various other positions with the Company, including Vice President of Customer Engineering, from July 2007 to December 2011. From November 1999 to July 2007, Mr. Sadana was a senior engineering manager of the Gigabit Switching Business Unit at Cisco Systems, an information technology provider. Mr.

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14. Jul 7, 2017

    The Compensation Committee of the Board of Directors of Arista Networks, Inc. (the “Company”) approved customer impact cash bonuses to its named executive officers as set forth in the table below. The cash bonuses were effective and paid as of June 30, 2017. The customer impact cash bonuses were intended to reward exceptional customer relations performance and the Company’s recent successes in patent litigation. Named Executive Officer Title Customer Impact Award Ita Brennan Chief Financial Officer $120,000 Anshul Sadana Chief Customer Officer $150,000 Marc Taxay Senior Vice President and General Counsel $150,000

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15. Jan 6, 2017

    On January 6, 2017, Mark Smith, the Senior Vice President, Worldwide Sales Operations of Arista Networks, Inc. (the “Company”), informed the Company that he will voluntarily resign his position effective on February 6, 2017. The sales function for the Company will continue to report to Anshul Sadana, the Company's Chief Customer Officer.

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Proxy statements (DEF 14A): 2026 · 2025 · 2024 · 2023 · 2022 · 2021

From the company's 10-K XBRL data (SEC companyfacts).

People who stopped filing as an insider of this company. “Last filing” is the last Form 3/4/5, an upper bound on when they left.