Matthew W. "Matt" O'Neill

Lucien A. Beaudry is a top attorney recognized by Best Lawyers in the practice area(s) of Business Organizations (including LLCs and Partnerships) and Tax Law. Lucien A., who practices law in Milwaukee, Wisconsin, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lucien A. is held by other top lawyers in the same geographic and legal practice area.

Joseph E. Tierney, III has more than forty years of experience focused primarily on tax and corporate law for businesses, owner families and individuals. He has particular experience in the design and administration of plans for very large estates, including some whose accumulated assets have totaled in the eight- and nine-figures. He has also been lead counsel in the purchase and sale of numerous businesses and has extensive experience in entity selection and structuring. Because tax consequ...

Tom Phillips focuses his practice on taxation and provides tax analysis, advice, and tax opinions to publicly traded and closely-held business entities. He has more than 40 years of experience representing clients in and structuring and implementing tax-free reorganizations and mergers, spinoffs, cross-border transactions, taxable asset and stock purchase transactions and partnership transactions. That experience also includes representing private placement investments in limited partnerships...

Suzanne Fischer-Lorenz is a Family Law attorney with Karp & Iancu SC in Waukesha, Wisconsin. She is known for her thoughtful approach to resolving complex and emotionally charged legal matters, helping clients navigate difficult transitions with clarity, preparation, and practical guidance. From an early age, Suzanne demonstrated a natural ability to advocate for others and communicate effectively during disagreements. Over the course of her legal career, she has developed a reputation fo...

Tamar Kelber is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice and Commercial Litigation. Tamar, who practices law in Milwaukee, Wisconsin, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tamar is held by other top lawyers in the same geographic and legal practice area.

Caitlyn B. Sikorski is a shareholder in Reinhart’s Trusts and Estates Practice where she focuses on trustee compliance and litigation, including breach of trust, breach of fiduciary duty, undue influence, and significant construction and reformation matters. She represents individual and corporate fiduciaries, beneficiaries, and other parties involved in will, trust and intra-family related disputes and matters. Caitlyn is also experienced in prenuptial and marital property agreements, ...

Ashley is a shareholder focusing on civil defense litigation, handling matters at all stages - from pre-suit stage investigations and negotiations, through discovery, settlement, trial, and appeal. She has successfully defended individuals, professionals, corporations, employers, and insurers in matters involving allegations of personal injury, premises liability, product liability, and insurance coverage. Ashley is committed to providing service that produces successful results and her clien...

William R. Cummings is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. William R., who practices law in Milwaukee, Wisconsin, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William R. is held by other top lawyers in the same geographic and legal practice area.

Sarah Kaas is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Sarah, 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 Sarah is held by other top lawyers in the same geographic and legal practice area.

Pete Faust is the president and managing shareholder of O’Neil Cannon and an experienced deal and corporate lawyer. Pete assists buyers, sellers, borrowers, lenders, and investors with a wide range of business law matters, including mergers and acquisitions, formation and organization of new businesses, and contract negotiations. Pete has successfully closed hundreds of mergers and acquisitions and financing transactions, ranging in deal size from few million dollars to $500 million. Pe...