We’re here to serve you

Personable, accomplished and results-driven. Kinney Mason, P.C., L.L.O. is an innovative, technology-centered law firm that offers litigation services to individual and business clients in Omaha, Nebraska. We’re not interested in simply billing hours; we want to make sure our clients are served in the best way possible. We focus on the needs of each client and use a staged flat-fee system.

Although our main areas of focus are personal injury and divorce cases, we also offer services for business litigation, estate planning, corporate formation, privacy litigation, and general litigation.

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Not your typical firm.

Driven by our desire to serve, bound by innovation – not tradition. We continue to redefine the way law is practiced.

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Meet our team

John A. KinneyFounder / Managing Partner

Kinney Law is exactly the kind of law firm John would go to if he was in need of legal assistance. After 13 years of practicing law in various firms in the Omaha area he created KINNEY LAW, PC, LLO, now known as Kinney Mason, PC, LLO, with the goal of providing a new spin how to serve people needing legal counsel and services. Innovation, not tradition with a bend to redefine how he practices law.

Most of John’s clients would be hard pressed to guess that he attended Boston College, where he obtained his Bachelor’s Degree (cum laude) in 1989 with a double major in English and Political Science. From your first meeting with him you’ll feel welcome. His friendly smile and warm sense of humor are genuine. We should also mention that he also attended DePaul University College of Law, Chicago, Illinois, where he obtained his Juris Doctorate Degree in 1994.

A little more about John, he knows his way around the courtroom. He’s been the principal litigator in jury trials in both federal and state courts. He has represented individual clients in personal injury cases, divorces, contract disputes and commercial law matters. Although John has a reputation for winning, he’s most proud of the fact that he has the reputation, among judges and his peers, as being honest, hardworking and someone who truly cares about his client’s outcomes.

John Kinney is the former chair of the Family Law Section of the Nebraska State Bar Association. He has published two articles in the Nebraska Lawyer magazine: A Summary View of Property Division in Nebraska Divorce Cases” (May 2001) and, more recently, “LB654 and the Current State of Joint Custody in Nebraska” (June 2006). He also served as a member of the Child Support Advisory Commission, which issued a report in January 2007 suggesting comprehensive changes to the Nebraska Child Support Guidelines.

In 2007, John Kinney was admitted as a fellow into the American Academy of Matrimonial Lawyers, an organization devoted to improving the practice of family law attorneys.

Jill M. MasonPartner

Jill obtained a Bachelor of Arts degree (magna cum laude) from Creighton University in 2005 with a double major in English and Political Science. She attended Creighton University School of Law, where she obtained her Juris Doctorate Degree (cum laude) in 2008; in addition, Jill was the recipient of Dean’s Merit, Lena Lorge and Yale Kroloff Scholarships, and she was a CALI Award Winner for Legal Writing II. Jill was involved in the Women’s Law School Association, Moot Court Board and Phi Delta Phi legal Fraternity, and she is a member of the Robert M. Spire Inns of Court and the Creighton University Young Alumni Board.

Jill Mason joined Kinney Mason as a law clerk in December 2007 and is now a partner in the firm.

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Wendi Nissen RenteriaParalegal for John A. Kinney

Wendi joined the Firm in 2017.  Wendi’s foundation of values of integrity and a strong work ethic were planted early in her life growing up in a small Danish community in rural Iowa.

Family law was Wendi’s primary focus over twenty years ago as she earned her paralegal degree at Metropolitan Community College, and it remains her primary focus today.

Wendi’s professionalism and attention to detail help lift the spirit of our clients, providing comfort and confidence as they move through each stage of their divorce.  A member of the Nebraska Paralegal Association (NePA), Wendi’s decades of experience as a divorce paralegal provide a depth of knowledge to assist our clients in making informed decisions.

As an avid runner, Wendi recognizes that for some of our clients the divorce process may be a marathon and not a sprint to the finish. She strives to support our clients by facilitating countless actions needed for excellent advocacy for each client, be it summarizing discovery documents, drafting complex spreadsheets of marital estates or ensuring clarity for a holiday schedule best for a child.

Wendi listens with an open heart and hears what is important to help our clients reach their goals and keep them on pace with their values during this challenging time.


Mindy M. WoodwardOffice Manager and Paralegal for Jill M. Mason

Mindy joined the Firm in 2017.

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Jessica ZemanReceptionist

Jessica joined the firm in November 2015.  She is new to the legal field, but brings with her 12 years of customer service experience.  In her free time, she enjoys spending time with her family and figure skating.