CALL FOR FREE CONSULTATION 774-243-9002 774-243-9002
Home / Our Team / Katarzyna J. Wennerberg

Katarzyna J. Wennerberg

Senior Attorney


Katarzyna (Kasia) Wennerberg joined Sladen & Costigan as a senior attorney in late 2022. Kasia brings her energy and relentless determination to each client’s case. Kasia understands the importance of closure for a client and being able to take the next steps on a new journey ahead.

Kasia was born and raised in Poland. In 1995, while still in high school, she moved to the United States, specifically Worcester, Massachusetts. Despite not being able to speak English initially, Kasia graduated from Bartlett High School in Webster, Massachusetts in 1998.

Kasia received her baccalaureate degree from Becker College, while simultaneously working for local attorneys in the areas of immigration, real estate, family, civil and criminal defense law. Kasia obtained her law degree from Massachusetts School of Law and has been practicing law in Worcester County for fifteen years. Currently, Kasia’s legal practice is primarily in the area of Probate and Family law. Kasia is fluent in Polish (including reading and writing) and she is able to communicate effectively in Russian and Lithuanian.

Kasia resides in Dudley with her family. She enjoys spending time with family and friends.