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    Home /  Lawyers /  Kolja I. Ortmann

    Kolja I. Ortmann

    Associate

    Brussels +32-2896-8000
    Frankfurt +49-69-4272-5200
    ortmannk@sullcrom.com
    Kolja I. Ortmann Headshot Photo

    Brussels

    +32-2896-8000

    Frankfurt

    +49-69-4272-5200

    |

    ortmannk@sullcrom.com

    Email vCard

    Kolja Ortmann is an associate in Sullivan & Cromwell’s Brussels and Frankfurt offices and his practice focuses on all aspects of European, German and U.S. competition law, including the global coordination of cross-border merger reviews and investigations conducted by the European and U.S. antitrust regulators. He has been named a top competition lawyer by Wirtschaftswoche/Handelsblatt in 2025 and MergerLinks ranks him highly as antitrust lawyer by total deal value.

    Mr. Ortmann has represented global corporations in complex merger control, investigation and litigation matters spanning jurisdictions and industries, including tech, pharmaceuticals, aerospace, fashion, transportation, retail, automotive, biotechnology, telecommunications and industrial materials. He also advises in relation to foreign investment and foreign subsidies reviews and has experience in US civil litigation.

    In addition to Brussels, Mr. Ortmann has spent time in the Firm’s D.C. office and he maintains an active pro bono practice. Prior to joining Sullivan & Cromwell in 2021, he was an associate at Cravath, Swaine & Moore LLP in New York and, prior to his legal studies at Harvard Law School, a management consultant with McKinsey & Company.

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    Spotlight

    S&C Advises DEUTZ on Transformative Billion-Euro Acquisition

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    S&C Advises Merck KGaA on $11.3 Billion Acquisition of Bio-Techne

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    S&C Advises ProLogium on $3.8 Billion Business Combination with Translational Development Acquisition Corp.

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    S&C Advises Wren House in Agreement To Form 50/50 Joint Venture with T-Mobile

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    S&C Advises Organon on Acquisition by Sun Pharma

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    • Experience
    • News
    • Credentials
    • Related Practices
    Experience

    Experience

    Merger Control, Foreign Direct Investment and Foreign Subsidies Regulation

    • Amgen on its $28.3 billion acquisition of Horizon Therapeutics
    • Baxter on its $3.8 billion sale of its Vantive kidney care segment to Carlyle
    • Biohaven Pharmaceutical on its $11.6 billion acquisition by Pfizer
    • Bosch on its $8 billion acquisition of Johnson Controls’ and Hitachi’s HVAC business as well as the acquisition of a minority share in Swedish Husqvarna
    • Flix in relation to an investment by EQT and Kühne
    • home24 in relation to its voluntary public takeover by Austrian-based furniture retail company XXXLutz
    • Kering in relation to its acquisitions of Maui Jim and Creed

    • Lundin Mining Corporation in connection with its and BHP’s definitive agreement with Filo Corp. to jointly acquire 100% of Filo’s issued and outstanding common shares
    • Majorel (owned by Bertelsmann and Saham) in connection with the voluntary public takeover by Teleperformance and the (abandoned) merger with Sitel
    • Merck KGaA in its $11.3 billion acquisition of Bio-Techne and its $3.9 billion acquisition of Springworks Therapeutics
    • Schaeffler on the full range of competition matters, including in relation to the Vitesco restructuring
    • Seagen on its $43 billion acquisition by Pfizer
    • Triton in its $13.3 billion acquisition by Brookfield Infrastructure Partners
    • VMware (and its co-owner Silver Lake) on the merger control and FDI aspects of its $69 billion acquisition by Broadcom
    • Zalando in relation to its voluntary public takeover of ABOUT YOU

    Investigations, Conduct and Digital Markets Act

    Mr. Ortmann has significant experience advising clients on antitrust investigations and conduct issues in Europe and in the US, as well as the EU’s platform regulation DMA, including counseling clients that may be found to hold a dominant position, defending targets of investigations and representing complainants in such investigations (including Circana, Dolby, Intel, K+S and Sisvel).

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    News

    News

    • S&C Advises DEUTZ on Transformative Billion-Euro Acquisition

      July 9, 2026
    • S&C Advises Merck KGaA on $11.3 Billion Acquisition of Bio-Techne

      June 25, 2026
    • S&C Advises ProLogium on $3.8 Billion Business Combination with Translational Development Acquisition Corp.

      June 8, 2026
    • S&C Advises Wren House in Agreement To Form 50/50 Joint Venture with T-Mobile

      May 1, 2026
    • S&C Advises Organon on Acquisition by Sun Pharma

      April 28, 2026
    • Bosch Completes $8 Billion Acquisition of Residential and Light Commercial HVAC Business from Johnson Controls and Hitachi

      August 1, 2025
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    Credentials

    Credentials

    Education

    • Harvard Law School, J.D., 2019
    • University of Cambridge, M.Phil, 2014
    • Imperial College London, B.Sc., 2012

    Bar Admissions

    • Brussels, Belgium (B-List)
    • District of Columbia
    • Ireland
    • New York

    Languages

    • English
    • German
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    Related Practices

    Related Practices

    • Litigation
    • Antitrust
    • Europe
    • European Competition
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