Gregory M. "Greg" Hildebrand

Mark Malloy is a trial lawyer who represents businesses in all types of commercial litigation, primarily advising companies in the areas of insurance coverage, extra-contractual liability, and professional liability. Mark is licensed in Wisconsin, Minnesota, and Illinois, and various federal courts. He represents companies in litigation across the country. Clients contact Mark for analysis and opinions relating to complex insurance coverage issues for both personal and commercial lines. In pa...

Lawrence J. Burnett is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Lawrence J., who practices law in Milwaukee, Wisconsin, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lawrence J. is held by other top lawyers in the same geographic and legal practice area.

Jeffrey T. “Jeff” Nichols has tried more than 80+ civil jury trials to verdict across state and federal courts in Wisconsin and the United States. A named partner in the firm, Jeff also serves as the president where he is responsible for the execution of the overall business strategy in leading Crivello, Nichols & Hall to becoming Wisconsin and the Midwest’s unrivalled defense law firm. His national trial practice is heavily concentrated on products liability, catastroph...

Michael J. Gentry is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Michael J., who practices law in Milwaukee, Wisconsin, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael J. is held by other top lawyers in the same geographic and legal practice area.

Joe is the chair of the firm’s Litigation Practice Group. He manages a variety of complex cases involving software class actions, real estate, products liability, banking, intellectual property, and anti-trust matters. He has extensive experience representing both large and small plaintiffs and defendants in challenging civil litigation. He has been selected as a member of the Wisconsin Super Lawyers for six years in a row. Prior to joining O’Neil Cannon, Joe was an associate at t...

Eric P. Hagemeier is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Eric P., who practices law in Waukesha, Wisconsin, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Eric P. is held by other top lawyers in the same geographic and legal practice area.

Nathan Bayer is a top attorney recognized by Best Lawyers in the practice area(s) of Municipal Law. Nathan, who practices law in Milwaukee, Wisconsin, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nathan is held by other top lawyers in the same geographic and legal practice area.

Mark A. Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - ERISA and Litigation - Labor and Employment. Mark A., who practices law in Milwaukee, Wisconsin, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark A. is held by other top lawyers in the same geographic and legal practice area.

Terri Boxer is the Co-Chair of the Trusts and Estates Section. She practices in the areas of marital property, estate planning, and probate and trust administration. She advises clients on business succession planning and tax planning to minimize estate, gift and generation-skipping taxes. She provides services in the drafting of estate plans and other documents including wills, trusts, marital property agreements, premarital agreements and powers of attorney.

Tom Kammerait is a Shareholder and the Chair of the Business Succession Planning Section. Tom represents businesses on all aspects of their corporate and business needs including transactional matters, tax, general corporate, real estate, technology, and estate planning issues. Tom generates value by helping clients set priorities for enhancing the value of their businesses and identifying risk management strategies, on a tax-efficient basis. He is also a CPA, so his knowledge of accounting g...