Charles Hartzheim serves as an attorney/shareholder of the Herrling Clark Law Firm and has been with the firm for over 35 years. He emphasizes a practice in the areas of business law, business mergers and acquisition law, trusts, estate planning, probate law and real estate law.

Charles' experience in business law includes formation and operations of corporations, partnerships, limited liability companies, and limited liability partnerships, along with the various types of buy/sell agreements associated with the above business entities.

In the area of trusts, estate planning, and probate, Charles' experience includes preparation of wills, marital agreements, revocable living trusts, irrevocable life insurance trusts, charitable remainder trusts, grantor retained annuity trusts, generation skipping trusts, family limited partnerships, and other estate planning documents used both to avoid probate and minimize Federal death tax.

Charles was rated by an international service as having "very high to preeminent" legal ability and "very high" ethical standards as established by confidential opinions of members of the Bar in Northeast Wisconsin. He also was rated as one of the "Best of the Bar" in a survey of lawyers conducted by Fox Cities Magazine.