Sean D. Auton Partner
  • D 312.606.3226
  • F 312.267.2229
Sean D. Auton
"The perfect client is someone who has reached a point where they need a higher degree of expertise and more counseling, such as a start-up with significant aspirations or a successful business that wants to break through to the next level. They are looking for someone to help them build their business, not just execute legal documents."

Sean is a partner in HMB’s Business and Finance Group and focuses his practice on general counsel and transaction matters. He predominantly serves high-growth companies, ranging from start-ups to more established entities.

Sean in known for his “consigliere-style” approach to delivering legal services, from representing transactional needs, like contracts and agreements, to offering the big picture advice that helps clients accomplish their goals. He has considerable experience helping business leaders find and create the optimal structures to operate their businesses, whether it’s for the purpose of encouraging growth and investment or for taking advantage of tax law opportunities.

For M&A work, Sean works closely with private equity groups on all aspects of their operations, including structuring funds, fundraising and investments, strategic acquisitions, the growth of portfolio companies and strategic exits.

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Sean has strong experience advising the manufacturing and distribution industry on critical business needs such as OEM agreements, joint ventures and partnerships. He also has a depth of experience with medical and dental practices, professional service companies, marketing agencies and the technology industry, including developers, analytical firms and IT support.

The First Phone Call You’ll Make

Clients look to Sean as the first phone call they make, whether evaluating an opportunity or putting out a fire. Sean and his clients share common characteristics which also set them apart: an entrepreneurial spirit, unwillingness to maintain the status quo and deep appreciation for the value having a lawyer in a strategic long term relationship can provide for a company’s top and bottom lines.


  • General counsel services
  • Mergers, acquisitions and divestitures
  • Manufacturing/distribution companies – providing counsel for critical business needs such as OEM agreements, joint ventures and partnerships
  • Private equity groups – structuring funds, acquisition and growth of portfolio companies, fundraising, investments, and strategic acquisitions
  • Professional Services firms – especially medical and dental practices
  • Technology companies – including developers and support companies


University of Michigan, J.D.

University of Michigan, B.A.




Professional Memberships

  • American Bar Association
  • Chicago Bar Association, Past Chairman of the Chicago Bar Association’s Business Law Committee
  • Illinois State Bar Association


  • HMB Represents NextLevel in $50M Merger with California-Based Healthcare CompanyJanuary 10, 2020

    NextLevel Health Innovations, Inc. ("NextLevel"), a managed care health plan for Cook County residents with Medicaid known for its community involvement, has signed a Merger Agreement with Molina Healthcare, Inc. ("Molina"), a FORTUNE 500 company. HMB represented NextLevel in the negotiation and signing of the Merger Agreement. As part of the transaction, Molina will assume the right to serve approximately…

  • Attorneys in Action: Sean Auton gives back with Facing Forward to End HomelessnessAugust 28, 2019

    Sean Auton, an HMB partner and member of HMB's Business and Finance practice, gave out plenty of high-fives at Facing Forward to End Homelessness's Board/Resident picnic. Sean works with Facing Forward as a board member. Facing Forward ends the cycle of homelessness by providing housing and social services. Once critical needs such as food and housing are met, clients at…


  • University of Michigan, J.D.
  • University of Michigan, B.A.
  • Illinois
  • Michigan
500 West Madison Suite 3700
Chicago IL 60661

Phone: 312-606-3200 Fax: 312-606-3232
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