William P. Greubel III

Stephen V. D'Amore is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Stephen V., who practices law in Chicago, Illinois, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephen V. is held by other top lawyers in the same geographic and legal practice area.

Deborah L. Gersh is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Privacy and Data Security Law. Deborah L., who practices law in Chicago, Illinois, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Deborah L. is held by other top lawyers in the same geographic and legal practice area.

Thomas M. Power is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Plaintiffs, Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Thomas M., who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas M. is held by other top lawyers in the same geographic and legal practice area.

David A. Golin is a top attorney recognized by Best Lawyers in the practice area(s) of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law. David A., who practices law in Chicago, Illinois, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David A. is held by other top lawyers in the same geographic and legal practice area.

Lance Zinman, global chair of Katten's Financial Markets and Funds practice, provides comprehensive legal services to asset managers, proprietary trading firms and other participants in the financial markets in need of a single advisor to assist with all aspects of their business. His unique skill set combines a deep understanding of corporate, regulatory, intellectual property and tax law with broad knowledge of the securities and derivatives markets. Using his extensive experience with thes...

John F. Gibbons has more than 25 years of experience handling a broad range of civil and criminal matters for national corporations, financial institutions, brokerage houses, pension funds, real estate entities, and individuals, including fraud, breach of contract, trade secret, class action, RICO, civil rights, commercial and criminal securities cases, grand jury investigations, white collar defense, FCPA issues, corporate internal investigations and appeals. He has advised many corporate cl...

Attorney Helena Trachtenberg is dedicated to working with couples facing complex family law issues. Her experience in working with soon-to-be-ex-spouses has offered her valuable perspectives on the different approaches couples might take for marital dissolution. Whether a couple is seeking a traditional litigated divorce or mediated or collaborative law approaches to divorce, Attorney Trachtenberg has the experience couples seek. She also speaks Russian and enjoys working with couples for who...

William (Bill) J. Butler focuses his practice on estate planning and probate administration matters. Bill counsels family groups and individuals on all aspects of wealth transfer planning, with an emphasis on formulating estate plans that maximize and protect wealth while minimizing transfer taxes. Bill is the global head of McDermott’s Private Client Group and is a member of the Firm’s Management Committee. Bill represents many large, multigenerational family groups, and also adv...

As a seasoned litigator with the added benefit of in-house experience, Maile takes pride in her in-depth understanding of her clients and their businesses so she can anticipate their needs, their pain points, and the internal and external pressures they face. With nearly 30 years of experience litigating and counseling clients in all types of commercial litigation, Maile is meticulous, responsive, tough, and strategic. Since joining Barack Ferrazzano, Maile has represented clients in commerci...

Don brings to the table more than 30 years of experience advising companies and executives on best practices in executive and board compensation. Working within the framework of tax, accounting, SEC reporting, and bank regulatory issues, Don helps guide his clients on how best to recruit, incentivize, and retain top talent as well as advise individual executives in their transition into and out of C-Suite positions. Don is a partner in Barack Ferrazzano’s Compensation & Benefits Gro...