What departments does Sisterson & Co. LLP have?

Sisterson & Co. LLP has employees across 2 departments including Entrepreneurship, Accounting.

What is the largest department at Sisterson & Co. LLP?

The largest department at Sisterson & Co. LLP is Entrepreneurship with 1 employees.

Where are Sisterson & Co. LLP employees located globally?

Sisterson & Co. LLP has employees across 1 continents and 1 countries including United States Of America.

How has Sisterson & Co. LLP's team size changed over time?

Sisterson & Co. LLP's team has decreased from approximately 115 to 108 employees based on available data.

Sisterson & Co. LLP Employee Directory

AccountingPennsylvania, United States51-200 Employees

Sisterson & Co. LLP is a mid-sized, independently owned certified public accounting and financial consulting firm based in Pittsburgh, Pennsylvania. Founded in 1926, the firm has grown steadily by expanding services and staff to meet client needs. It serves hundreds of clients and provides a spectrum of services that include tax, audit and accounting, consulting, and field examinations. 

Operating within the accounting industry, Sisterson aims to deliver value-added financial services that support client success. Its areas of expertise span manufacturing and distribution, private investment companies, not-for-profit organizations and private foundations, real estate, energy, professional services, technology, and employee benefit plans. The firm is rooted in Pittsburgh and maintains a regional client base across multiple sectors.

Sisterson & Co. LLP Global Highlights

North America
152

United States Of America
152

Sisterson & Co. LLP's Leadership

E. L.
Owner
Mobile Phone
Email
J. S.
Partner
Mobile Phone
Email
A. S.
Tax Manager
Mobile Phone
Email
B. L.
Manager
Mobile Phone
Email
J. G.
Manager, Lender Services Group
Mobile Phone
Email
H. J.
Senior Tax Associate
Mobile Phone
Email
S. G.
Senior Tax Associate
Mobile Phone
Email
J. D.
General Associate
Mobile Phone
Email

Sisterson & Co. LLP Employee Metrics

100%

50%

0%

2026

2025

Accounting
Information Technology
Consultant
Administrative
Analytics
Other

Contact profiles from Sisterson & Co. LLP

Name

Title

Contact Info

Location

Last Update

E. L.
Owner
Mobile Phone
Email
Oct 22, 2024
J. S.
Partner
Mobile Phone
Email
Oct 23, 2024
A. S.
Tax Manager
Mobile Phone
Email
Jun 29, 2026
B. L.
Manager
Mobile Phone
Email
Jun 15, 2026
J. G.
Manager, Lender Services Group
Mobile Phone
Email
Oct 16, 2024
H. J.
Senior Tax Associate
Mobile Phone
Email
Nov 13, 2025
S. G.
Senior Tax Associate
Mobile Phone
Email
Oct 17, 2024
J. D.
General Associate
Mobile Phone
Email
Jun 17, 2025
D. M.
Administrative Associate
Mobile Phone
Email
Jun 01, 2026
A. H.
Tax Supervisor
Mobile Phone
Email
Jun 02, 2026

Frequently Asked Questions

What is Sisterson & Co. LLP known for?

Sisterson & Co. LLP was founded in 1926 operates in the Accounting industry; you can contact the main corporate office by phone at

+1-412-281-****

. Explore Sisterson & Co. LLP's company overview page for more information.

What is Sisterson & Co. LLP's most common email format?

Sisterson & Co. LLP employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Sisterson & Co. LLP email formats with LeadIQ.

How many employees does Sisterson & Co. LLP have currently?

Sisterson & Co. LLP has approximately 118 employees as of July 2026. These team members are located across 1 continents, including North America.

Who are Sisterson & Co. LLP's key employees and leadership?

As of July 2026, Sisterson & Co. LLP's key employees include:

Owner: E. L.
Partner: J. S.
Tax Manager: A. S.
Manager: B. L.
Manager, Lender Services Group: J. G.

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Sisterson & Co. LLP Employee Directory

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