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Zack Rupiper counsels clients on all aspects of business transactions – including strategic planning decisions, structuring, management, and due diligence issues. He has extensive experience advising private equity clients and their portfolio companies in mergers and acquisitions, including leveraged buyouts, traditional purchase and sale transactions, strategic mergers, joint ventures, restructuring and recapitalization transactions.

Zack also assists a wide range of clients with day to day business operations and issues that may arise, ranging from  general management questions to to commercial contracting to corporate governance.

Prior to joining Koley Jessen, Zack externed with the Honorable William J. Riley, Chief Judge of the United States Court of Appeals for the Eighth Circuit.



Zack has closed 75+ business transactions to date, with a cumulative value of over $2.0 billion. Selected examples include:

  • Tenex Capital Management in its acquisition of:
    • Consolidated Label & Online Labels
    • Pugh Lubricants, LLC
    • Unirac, Inc.
    • Auveco
    • Empire Auto Parts
    • Big Bolt Corporation
    • TerryBerry
    • Orbus Exhibit & Display Group
    • G2 Secure Staff
  • Team Select Home Care in its investments in 5 separate businesses
  • JBT Corporation in its acquisition of Prime Equipment Group 
  • AbsenceSoft in its sale to Bow River Capital Partners
  • McCarthy Capital in its investment in BiggerPockets
  • Syncsort in its acquisition of Townsend Security’s IBM i security division
  • O’Connor’s in its sale to Thomson Reuters
  • Auveco in its acquisition of Marli Manufacturing
  • Guild Mortgage Company in its acquisition of AmeriproCornerstone Mortgage
  • DirectApps, Inc. in the sale of ECaTS, LLC to West Corporation
  • Guild Mortgage Company in acquisition of AmeriPro Home Loans, Cornerstone Mortgage, and VITEK Mortgage Group
  • Clearview Capital, LLC in the sale of QC Supply, LLC to Charlesbank Capital Partners
  • McCarthy Capital in the sale of Benaissance, LLC to WEX Inc. (NYSE: WEX)
  • Cadence Petroleum Group in its acquisition of:
    • Apollo Lubricants
    • Veteran's Oil
    • Halco Industries
    • Mid-South Sales
    • Davison Fuels & Oil
    • Stockman Oil

News & Publications

Honors & Affiliations

Honors & Awards

Best Lawyers: Ones to Watch, Mergers and Acquisitions Law, 2021-2022
Super Lawyers Rising Star, 2019-2020

Community & Professional

Nebraska Bar Association
Omaha Bar Association
University of Nebraska-Lincoln – Young Alumni Academy 2016-2017


J.D., The University of Iowa College of Law (high distinction)

  • Iowa Law Review – Contributing Editor
  • Order of the Coif

B.A., University of Nebraska-Lincoln (highest distinction)

  • Political Science and Psychology
  • Honors Program


  • State of Nebraska
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