Photo of Lacy M. Fields

Lacy M. Fields


“I am a fierce advocate in litigation, but the most valuable service I can give my client is to get ahead of problems before they start.”


  • Missouri
  • Illinois
  • U.S. District Court, Eastern District of Missouri


J.D., Washington University School of Law, 2007

B.A., University of Kansas, Human Biology and Psychology, summa cum laude, 2002


Lacy Fields works with corporate clients and start-ups in commercial litigation, contract disputes, products liability, environmental initiatives, trucking and logistics. She has experience with all stages of litigation, from resolving disagreements without the need for a formal lawsuit, to filing motions and cross-examining adverse witnesses. She has a practical approach to litigation, helping her clients make informed strategy decisions.

Recently, she has:

  • Obtained a nearly half-million dollar judgment—and collected it despite all odds – against a large institution on behalf of a medical services client.
  • Set aside a nearly one-million dollar judgment entered against a franchisor client.
  • Secured a significant settlement in a fraud case involving a defendant who was difficult to catch.
  • Obtained a favorable settlement for a court-appointed client in an “impossible” civil rights case.

Lacy’s background includes a broad range of practice areas, which she credits for her creative approach to solving her clients’ problems. Before joining Greensfelder, Lacy handled product liability and toxic tort cases with an Illinois law firm. Prior to that, she spent years representing plaintiffs in personal injury and workers’ compensation cases. This working knowledge of the “other side” allows her to anticipate her opponents’ strategies. She has experience in government as well, having served as a Missouri Assistant Attorney General, which included work as a special prosecutor. During law school, Lacy interned for both the St. Louis Circuit Attorney’s Office and the Missouri State Public Defender system. She spent three months living and working in Durban, South Africa, through Washington University Law School’s well-respected legal aid program. Her education prior to law school focused on the sciences, particularly human biology. This background makes Lacy particularly strong in healthcare and medical defense cases.

Outside of work, Lacy volunteers her time in a way that reflects her commitment to strengthening the St. Louis region. She is a mediator with Community Mediation Services of St. Louis. In that role, she has mediated and moderated high-profile matters such as Ferguson's police-community dialogues. She works with a number of groups that are dedicated to the revitalization of our North City neighborhoods. She is a committee member of the Rock Hill Parks and Recreation.

Professional Affiliations

  • Lawyers’ Association of St. Louis
  • The Missouri Bar
  • Illinois State Bar Association

Community/Civic Activities

  • Certified Community Emergency Response Team member
  • Pro Bono work with Legal Services of Eastern Missouri
  • Volunteer Community Mediator and Board of Directors with Community Mediation Services of St. Louis and Center for Conflict Resolution
  • Volunteer and Committee Member with WashU Engage
  • Volunteer with North Newstead Association
  • Committee Member with Rock Hill Parks and Recreation
  • Founder of Armin’s Orchard (community garden/orchard)

Honors & Awards

Honors & Awards

  • William Pomerantz Trial Prize, 2007
  • Equal Justice Works Award, 2007
  • The Best Lawyers in America, "Ones to Watch," 2021-2024

News & Insights

Seminars & Speaking Engagements

  • "Do I Need a Lawyer?" Lunch & Learn
    CIC & Cortex, December 13, 2022


Articles & Books

  • MoBar Desk Book Series: Workers’ Compensation Desk Book, Chapter 17, “Criminal Aspects"
    2008 supplement

This website uses cookies to improve functionality and performance. If you choose to continue browsing this website, you consent to the use of cookies. Read our Privacy Policy here for details.