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Sienna Osta

Associate

Sienna Osta is an associate attorney at Conroy Simberg’s West Palm Beach office. Sienna has represented both plaintiffs and defendants in a number of jury trials and bench trials, throughout the state of Florida, placing her in an advantageous position to strategically navigate proceedings in the best interest of her clients. She takes pride in creating and maintaining individualized, personal relationships with each and every client through open and direct communication. To ensure this, Sienna provides frequent updates at all stages of litigation and is always responsive and available to her clients. Sienna approaches every case with the aggressive dedication it takes to gain the best possible outcome. 

During her time in law school, Sienna represented her class as Class Senator and was an active member in the International Legal Honor Society, Phi Delta Phi. She was often on the Dean’s List and Honor Roll, received several book awards, and was a finalist in Cooley’s Annual Mock Trial Competition. As a third-year law student, Ms. Osta was selected as the scholarship winner from the Trial & Litigation Section of the Hillsborough County Bar Association in Tampa, Florida. Her article on “The Importance of Jury Trials in American Jurisprudence” was chosen and published in Lawyer Magazine, October 2015. 

Outside of the office, Sienna is committed to serving her community. She provides pro brono services to those in need and has been the voice for many children as a Guardian ad Litem. Sienna is passionate about community involvement and defending the rights of those in our community. In 2020, Ms. Osta ran for public office and was endorsed by serval local and statewide organizations during her campaign for a seat in the Florida House of Representatives. She currently serves on the Board of both the Palm Beach County Democratic Club, as well as the Democratic Progressive Caucus Palm Beach County, as Correspondence Secretary. 

Practice Areas:  

Admitted to Practice:

  • Florida, 2016
  • U.S. District Court, Middle District of Florida, 2017
  • U.S. District Court, Southern District of Florida, 2019 

Education: 

  • Thomas M. Cooley Law School – J.D. with Litigation Concentration
  • University of South Florida – B.S. in Biomedical Sciences with a minor in Political Sciences 

Professional Affiliations: 

  • American Bar Association
  • Palm Beach County Bar Association 

Honors & Awards: 

  • Scholarship winner from the Trial & Litigation Section of the Hillsborough County Bar Association for her article on The Importance of Jury Trials in American Jurisprudence, published in Lawyer Magazine, October 2015.
  • Appellate Advocacy Book Award  

Community Involvement: 

  • Palm Beach County Democratic Club, Board Member, 2021
  • Democratic Progressive Caucus Palm Beach County, Board Member, 2021
  • National Organization for Women, Palm Beach County Democratic Environmental Caucus of Florida 

Speaking Engagements: 

  • Punishing the Victims – How Courts Separate Children from Protective Parents and Re-Victimize Families, National Organization for Women, Palm Beach County, 2021