Gareth Maclachlan

Chief Operating Officer at Gigamon - delivering visibility across hybrid networks

United States

About

Executive in the Security Industry, responsible for Strategy, Transformation and Operations with experience in both start ups and public companies. Skilled in building strategy, implementing operational excellence, and running portfolio & product management, marketing and sales.

Experience

  • Chief Operating Officer at Gigamon
    Sep 2025 - Present · 11 mos

  • Trellix (3 yrs 11 mos)
    • Chief Product Officer
      Sep 2024 - Sep 2025 · 1 yr 1 mo

      Transforming Trellix to provide defense-in-breadth Agentic AI-led security operations, enriched with "Quantext", and achieving continuous threat reduction for government, critical infrastructure and regulated industries globally, in their cloud and data centers - #NotJustSaaS.

    • General Manager, SVP Network & Email Security
      Sep 2022 - Sep 2024 · 2 yrs 1 mo

      Innovating network and collaboration security, launching Network Detection & Response to counter the noisy, slow to value legacy NDR companies that have diminished the value of network insight in security operations.

    • Senior Vice President, Integration & Transformation / interim CIO
      Nov 2021 - Sep 2022 · 11 mos

      Delivered the double carve-out of FireEye and McAfee Enterprise, merging to form Trellix, building the 5th largest global cybersecurity provider. From concept to operating company in 12 months.

  • FireEye, Inc. (6 yrs 11 mos)
    • SVP Strategic Transformation & Operations
      Sep 2020 - Nov 2021 · 1 yr 3 mos

      Delivered operational transformation across FireEye / Mandiant, managed the sale and separation of Fireeye to STG.

    • VP Portfolio Operations & Governance
      Jan 2019 - Sep 2020 · 1 yr 9 mos

    • VP Product Strategy, Managed Security Services & Intel
      Jan 2017 - Jan 2019 · 2 yrs 1 mo

  • Chief Operating Officer at AdaptiveMobile
    Feb 2003 - Jan 2015 · 12 yrs

    An experienced hands-on commercial entrepreneur, who has established a new company in a new market segment and led it through to global market leadership and profitability. For AdaptiveMobile, I have defined, championed and marketed new product initiatives, including break-in sales for new markets, developed new channels to market, built new partnerships, and delivered year on year growth. Acquired in 2021 by Enea.

  • Investment Manager at ETF
    Nov 2000 - Sep 2002 · 1 yr 11 mos

    Board member and business development for portfolio companies. Identified and evaluated new investment opportunities in the enterprise software and mobile sectors.