Trisha P. Armstrong

Ms. Armstrong joined Sasser, Cestero & Sasser, P.A. as an associate attorney in 2015.  Ms. Armstrong practices marital and family law exclusively, representing clients in a wide variety of complex dissolution of marriage actions, timesharing matters, modifications of child support and alimony, paternity matters and prenuptial and postnuptial agreements.  Ms. Armstrong is licensed to practice law in Florida and Massachusetts.

Ms. Armstrong is an active member of the Family Law Section of the Florida Bar, where she currently serves on the Executive Council.  Ms. Armstrong also serves as the co-vice chair of the Family Law Section Continuing Legal Education Committee, secretary of the Family Law Section Publications Committee, and is a member of the Ad Hoc Constitutional Revision and Equitable Distribution Committees.  Ms. Armstrong is also actively involved in the Palm Beach County Bar Association and serves as co-chair of the Unified Family Practice Committee. 

Away from the office, Ms. Armstrong volunteers with the Junior League of the Palm Beaches and enjoys spending time with her husband and Yorkshire terrier.


  • Suffolk University Law School
    • - Juris Doctor, 2012
    • - Honors:  Dean's List
  • Fairfield University
    • - Bachelor of Arts, cum laude, Psychology, 2008
    • - Honors:  Dean's List
    • - Psi Chi National Honor Society

Bar Admissions

  • Florida Bar, 2014
  • United States District Court, Southern District of Florida, 2014
  • Commonwealth of Massachusetts, 2013


  • Florida Bar Family Law Section
    • - Executive Council, member (term 8/31/2021)
    • - Ad Hoc Constitutional Revision Committee, member (term 8/31/2018)
    • - Family Law Continuing Legal Education Committee, Co-Vice Chair (term 8/31/2018)
    • - Family Law Equitable Distribution Committee, member (term 8/31/2018)
    • - Family Law Publications Committee, Secretary (term 8/31/2018)
  • The Susan Greenberg Family Law American Inn of Court of the Palm Beaches
  • Palm Beach County Bar Association
    • - Co-chair of the Unified Family Practice Committee (since 2016)
  • American Bar Association, Family Law Section