Agata Mackowiak

Agata Mackowiak, CTFA, serves as Trust Tax Manager at Peak Trust Company, bringing over a decade of expertise in fiduciary tax compliance and trust administration. Agata is responsible for overseeing all trust tax processes, including the preparation, review, and filing of fiduciary income tax returns. She works closely with clients, advisors, and tax professionals to resolve complex tax inquiries, ensuring accuracy, timeliness, and adherence to all applicable laws and regulations.

Throughout her career, Agata has achieved significant success in tax management and trust administration. She has spearheaded process improvements, conducted comprehensive tax compliance audits, and developed best practices to streamline trust tax operations. Her extensive expertise encompasses a broad range of trust tax matters, including generation-skipping transfer (GST) tax analysis, foreign tax filings, and non-resident alien (NRA) withholding.

Agata holds a Master of Arts in Business and English from Silesian College of Economics and Languages in Poland, as well as a Bachelor of Science in Hotel Administration from the University of Nevada, Las Vegas. She has earned the Certified Trust and Fiduciary Advisor (CTFA) designation and completed advanced training in trust, estate, gift, and GST taxation through Cannon Financial Institute.

Our Team


Abigail O’Connor, JD

Chief Fiduciary Officer


Donn Lassila, CFIRS

Chief Compliance Officer


Lisa Russell, CFA

Chief Investment Officer


Michelle Stahle

Chief Operations Officer


James Meier, CPA, CMA

Chief Financial Officer


Stephen C. Miller, JD

General Counsel, Director


Chelcie Ashwood, CSOP, CTOP

Senior Operations Specialist


Kelsey Baldridge

People Development Coordinator


Sandra Barta

Associate Fiduciary Officer


Patti Blattmachr

Executive Officer


Erica Bradley

Associate Fiduciary Officer


Johnathon Brandt

Fiduciary Officer


Josephine Cangemi

Fiduciary Assistant


Kristine Casteel

Associate Fiduciary Officer


Nanette Cool

Accounting Manager


Daria Davis

Fiduciary Tax Coordinator


Danaya Dews

Fiduciary Assistant


Heather Dolan

Fiduciary Assistant


Jeannie Fanning

Fiduciary Team Manager


Gretchen Grau, CSOP, CTOP

Senior Operations Specialist


Jenelle Green

Fiduciary Tax Coordinator


Daniel Grondahl, CIPM

Investment Relationship Officer


Amber Gunn-Holt, CTFA

Senior Fiduciary Officer


Mariam Hall, CFMP

Marketing & Communications Coordinator


Jillian Johnson

Fiduciary Officer


Nichole King, CTFA

Fiduciary Officer, Head of Nevada Office


Lars Laundrup, CISSP

Information Security Specialist


Brent Liner, JD, CTFA

Senior Fiduciary Officer


Geoffrey Longhurst, CFIRS

Compliance Specialist


Agata Mackowiak

Trust Tax Manager


Erica Martirez

Operations Specialist


Heather Popowych

Policy & Procedure Unification Specialist


Faydra Ross

Associate Fiduciary Officer


Tali Salima-Emerson

Operations Assistant


Andre Sears

Business Development Officer


Jade Statz

Executive Assistant to the CEO


Janet Tempel, JD

Senior Fiduciary Officer


Autumn Tremont

Associate Fiduciary Officer


Sabrina Volstad

Front Desk Receptionist & Fiduciary Assistant


Kate Wheeler

Fiduciary Assistant


Brianna Williams

Operations Specialist


Dawn Wilson

Fiduciary Officer

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