David W. O'Quinn

Sid Lewis is a partner and leader of the Labor & Employment Practice Group, where he consults and advises management and human resources personnel with respect to employment and labor laws. Sid advises clients throughout the United States in all industries, including retail, hospitality, healthcare, manufacturing, and service industries. A majority of his work involves general advice to employers on a variety of employment situations, including discipline, terminations, applications, leav...

Philip D. Nizialek is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Insurance Law. Philip D., who practices law in New Orleans, Louisiana, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Philip D. is held by other top lawyers in the same geographic and legal practice area.

Jay Adams is a partner in the Tax Practice Group and leader of the state and local tax team. Through partnering with his clients, Jay has developed a broad knowledge of the energy, manufacturing, healthcare, transportation, and retail industries that allows him to provide comprehensive and cost-effective advice in those areas. For more than 25 years, Jay has represented clients in matters involving virtually every type of state and local tax and in numerous jurisdictions. He has successfully ...

Mr. Landis' commercial litigation practice focuses primarily on bankruptcy, construction and antitrust disputes. He is a member of the roster of commercial arbitrators of the American Arbitration Association and is Co-Chair if the firm's Bankruptcy Practice Group. Mr. Landis joined Stone Pigman in 1977.

Alex Rothenberg’s practice focuses on oil, gas and energy litigation and complex commercial and construction litigation. He also has experience in the areas of admiralty, insurance defense and family law. Alex was heavily involved in the multi district litigation concerning Chinese drywall and helped obtain the dismissal of one of his clients pursuant to the Foreign Sovereign Immunities Act. In re Chinese Manufactured Drywall Prods. Liab. Litig. , 168 F. Supp. 3d 918 (E.D. La. 2018). Al...

Member Mike Parks has more than 25 years of experience in trucking, transportation and automobile defense, general casualty and insurance defense, premises liability, products liability, and maritime litigation. As supported by the peer honors he has received, including Martindale-Hubbell’s AV Rating, inclusion in Best Lawyers, Super Lawyers and New Orleans Magazine Top Lawyers, Mike has developed a reputation as a highly skilled trial attorney in transportation and insurance defense li...

Trey is a founding member of the firm and practices in the New Orleans office in the litigation section. He maintains an active civil litigation focus, where his principal areas of practice are products liability, complex toxic tort and occupational exposure, and insurance litigation matters. He also has experience in medical malpractice, professional liability and commercial litigation. His experience includes both trial and appellate court experience in the Louisiana state and the Federal c...

Jane Jackson focuses her practice in the areas of environmental litigation, oil and gas, and commercial litigation. She handles the defense of environmental claims by landowners alleging environmental damage arising from oil and gas exploration and production operations. Ms. Jackson has represented public entities in land use cases involving the appropriation of property for constructing and maintaining hurricane protection levees, and she also has experience handling cases involving land los...

Marjorie A. McKeithen is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Marjorie A., who practices law in New Orleans, Louisiana, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marjorie A. is held by other top lawyers in the same geographic and legal practice area.

Emily Lippold Gummer is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property. Emily Lippold, who practices law in New Orleans, Louisiana, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Emily Lippold is held by other top lawyers in the same geographic and legal practice area.