Heath G. Mynsberge, a firm partner, was admitted to the Wisconsin bar in 2010.  He is a graduate of the University of Wisconsin, cum laude and with honors.  He is a member of the Winnebago County Bar Association, the Marathon County Bar Association, the State Bar of Wisconsin, the Eastern and Western Districts of Wisconsin, the Bankruptcy Courts for the Eastern and Western Districts of Wisconsin, the 7th Circuit of the United States Court of Appeals, and U.S. Tax Court.  He practices in a number of areas with most of his practice focused on complex litigation, business organizations, corporate law, and real estate.

Contracts

Family Law

Taxation and Tax Preparation

Unfair Sales Act

Bankruptcy, Debt, and Creditor/Debtor Law

Trademarks

Landlord Tenant - Landlord

Brian D. Hamill, a firm partner, was admitted to the Wisconsin bar in 2000. He is a graduate of Marquette University Law School. He is a member of the State Bar of Wisconsin, the American Bar Association, the Wisconsin Academy of Trial Lawyers, and the Winnebago County Bar Association. He practices in the areas of civil litigation, general practice, business formation, and municipal law.

Business Formation (Limited Liability Companies (LLCs), Corporations, S. Corporations, Limited Liability Partnerships (LLPs), and Partnerships)

Personal Injury

Contracts

Intellectual Property

Zoning and Land Use

Family Law/Divorce

Sports Law

Creditor/Collection Law

Matt Parmentier, a firm partner, was admitted to the Wisconsin Bar in 2009 after graduating summa cum laude from the Michigan State University College of Law where he served as an Associate Editor of the Michigan State Law Review. Matt focuses his practice on the areas of municipal law and employment law and serves as municipal attorney to dozens of municipalities and special use districts throughout Wisconsin. Matt regularly presents to groups such as the Wisconsin Towns Association, the Administrative and Local Government Section of the State Bar of Wisconsin, and the Fond du Lac Area Human Resources Association. Matt is a past Chairperson of the Administrative and Local Government Section of the State Bar of Wisconsin.

Employment Law

Zoning and Land Use

Alex focuses his practice on providing clear, practical counsel to Dempsey Law Firm’s municipal clients. He advises municipalities on land use, zoning, development agreements, solar energy projects, and the full range of issues that arise in day-to-day municipal operations. Alex also works closely with municipalities to ensure compliance with Wisconsin’s Open Meetings Law and Public Records Law. He regularly provides trainings on these subjects to municipal boards and staff.

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Alex’s practice also includes employment law and civil litigation. Outside the office, Alex enjoys golfing, trying new restaurants with his wife, Kristen, and cheering on Wisconsin sports teams.

Employment Law

Zoning and Land Use

Open Meetings Law

Public Records Law

Caleb Venzke, a firm associate, was born and raised in Tomahawk, Wisconsin. Soon after graduating from Marquette University, he returned north and now resides in the Fox Valley. Caleb competed in track and field while in both college and law school and now serves as an assistant coach at Ripon College working with the Javelin Throwers. Primarily, Caleb focuses his practice on municipal law, civil litigation, business and corporate law, and estate planning.

Claire R. Evanoff, a firm associate, was admitted to the Wisconsin Bar in May 2025. She is a graduate of University of Wisconsin Law School, and a member of the State Bar of Wisconsin. She practices in the areas of estate planning, estate/trust administration, and probate.

David Lummis is a native of central Wisconsin, having been born and raised in Stevens Point, Wisconsin. David obtained his Bachelor of Arts degree from the University of Wisconsin-Madison. He then obtained his law degree from the University of Wisconsin Law School. David has since returned to central Wisconsin and now resides and practices in Wausau, Wisconsin.

David assists the firm’s clients in several areas of law, focusing much of his time on civil litigation, family, and divorce law. David is a member of the Marathon County Bar Association and the State Bar of Wisconsin, and is admitted to the Eastern and Western Districts of Wisconsin.

Family Law

Appellate Law

Evan M. Seibel, was born and raised in Fond du Lac, Wisconsin. After attending law school at DePaul University College of Law in Chicago, Illinois, Evan returned to his hometown of Fond du Lac to provide competent legal advice to individuals in the community he grew up in. Prior to law school, Evan attended the University of Wisconsin Platteville, graduating with Bachelor of Science degrees in political science and criminal justice.

Attorney Seibel has been admitted to practice law in Illinois, Wisconsin, and the Eastern U.S. District Court for Wisconsin. Evan primarily focuses his legal practice on the areas of estate planning, probate and trust administration, real estate, and business transactions.

James (Jim) Miller joined the Dempsey Law Firm in December of 2021. Jim brings substantial legal experience in the areas of Appeals, Consumer Protection, and Landlord-Tenant. He was admitted to the State Bar of Wisconsin in 2007 after graduating cum laude from the University of Wisconsin Law School. During his time at the UW Law School, Jim represented clients in state and federal courts in both the Criminal Appeals Project and the nationally recognized Wisconsin Innocence Project. He also interned for the Wisconsin Director of State Courts, authoring a research report on Wisconsin jury reform published on the Wisconsin courts website. Following law school, Attorney Jim Miller served as a judicial law clerk to several judges, including a lengthy stint at the Wisconsin Court of Appeals. Prior to his legal career, in what he jokingly refers to as a former life, Jim served nine years as a firefighter in the U.S. Army Reserve. He is a past President of the Marathon County Bar Association.

Consumer Protection

Landlord & Tenant

Kenya Wilson, a firm associate, was admitted to the Wisconsin State Bar in 2025 after graduating from Marquette University Law School in 2025. Kenya interned for the Firm beginning in 2024 and joined full time after graduation. Kenya focuses her practice on the areas of municipal law, real estate law, and business law. Kenya attended University of Wisconsin-Oshkosh for her undergraduate degree, where she decided the Fox Valley is her forever home. She joined the Wisconsin Army National Guard in 2020, earned her commission in 2022 as a CBRN Officer and continues to serve today as a JAG Officer.

Lee first completed a circuit court judicial clerkship/mediator position.

Then Lee gained a unique experience by serving at the Wisconsin Towns Association from 2007 through 2015, where he traveled throughout Wisconsin to provide presentations on legal education to municipal officials, was a state-registered lobbyist, and heard first-hand about the issues experienced by Wisconsin local governments. The chances are excellent that Lee has either been to your town or at least knows where it is, and that he is already familiar with your kinds of issues.

Since 2016, Lee has been in private legal practice where he continues to work with all manner of municipal entities and issues. Lee acts as legal counsel, prosecutes violations, conducts hearings, and represents clients in civil litigation.

All areas exercised by or affecting Wisconsin local government

Ryan M. Plisch is an experienced attorney serving in an Of Counsel role with the Dempsey Law Firm. He provides strategic legal counsel to businesses and individuals, focusing his practice on business/corporate law, mergers and acquisitions, real estate, and estate planning and administration. Since his admission to the bar in 2010, Ryan has been dedicated to helping clients navigate complex transactions and plan for their long-term success.

A distinguished graduate of the University of Wisconsin Law School, where he earned his degree with honors, Ryan applies a meticulous and client-centered approach to his work. His experience spans private practice, a significant role as in-house General Counsel, and work as a Wisconsin Licensed Real Estate Broker. This diverse background provides him with a comprehensive understanding of both legal theory and real-world business application, allowing him to offer uniquely practical and strategic counsel. He is also a trusted advisor for individuals and families, crafting comprehensive estate plans to preserve wealth and ensure their wishes are carried out.

Mergers and Acquisitions