Sisterson & Co. LLP

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United States
Pittsburgh, PA
Sisterson & Co. LLP

Sisterson provides tax, audit and accounting, consulting and commercial lender services

Founded in 1926, Sisterson is one of the largest certified public accounting and financial consulting firms in the Pittsburgh area and serves clients in a variety of industries.

04/15/2026

On Tax Day, we recognize the people behind the work and the clients we’re proud to serve.

04/13/2026

Tax Day is April 15th!

03/12/2026

Congratulations to Aaron Janusey and Susannah Sowko on their promotions to Director. This recognition reflects their continued growth and contributions to our clients and firm.

03/06/2026

Happy Employee Appreciation Day!
Today we’re celebrating the incredible people who make Sisterson such a great place to work. Thank you for everything you do.

03/02/2026

February's Third Thursday at the “O” was a cozy one! We sampled amazing soups from Eadie’s Market, indulged in homemade sweets from our talented team, and showed off our brand-new Sisterson logo gear. Safe to say… it was a great look (and taste)

02/13/2026

During his birthday month, we honor of our founder, D.G. Sisterson, whose vision continues to guide Sisterson almost a century later. As we continue to celebrate our 100th year, our new brand and firm video reflect the values he established, rooted in tradition and refined for the future.

01/22/2026

Our Admin team kicked off 2026 with laughs, games, and friendly competition at PuttShack!

01/16/2026

January got off to a great start yesterday with our annual Third Thursday chili lunch, this year catered by Bistro To Go. A welcome tradition on a cold, snowy day.

01/05/2026

Sisterson is pleased to announce that Carissa Habsburg, CPA and Michael Koontz Jr. have been admitted to the Partnership effective January 1, 2026.

Carissa and Michael have consistently demonstrated outstanding client service and strong leadership.

Please join us in congratulating Carissa and Michael on this achievement and wishing them well in their new position.

01/01/2026

As Sisterson enters its 100th year, we’re proud to unveil our new logo - one that honors a century of tradition while embracing the transformation that has shaped our firm. Rooted in our past and refined for the future, it reflects who we’ve always been and where we’re headed as we begin our next century.

12/31/2025

Sisterson & Co. LLP will be closed on December 31st and January 1st for the New Year holiday. We will resume regular business hours on January 2.

Wishing our clients and colleagues a happy and healthy New Year!

12/23/2025

Last week, we had a great time celebrating the season at our annual Holiday Lunch at PPG Paints Arena. Thank you to the Pittsburgh Penguins for the hospitality, and to our special guest, Phil Bourque, for sharing stories from his days on the ice. A wonderful way to celebrate the holidays together.

Address

501 Grant Street Ste 450
Pittsburgh, PA
15219

Website

http://www.sisterson.com/

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