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Experienced Financial Provider With over 97 years of operation in the Pittsburgh region, Sisterson & Co. LLP has established a strong reputation for delivering high-quality accounting, tax, and consulting services to various industries, indicating a reliable partner for long-term financial engagements.

Diverse Industry Focus The firm's expertise spans manufacturing, real estate, energy, non-profit, private foundations, and technology sectors, presenting opportunities to tailor solutions across multiple sectors, especially for clients seeking industry-specific financial consulting and audit services.

Significant Market Size Generating annual revenues between $100 million and $250 million with a sizable team of 51-200 professionals suggests robust operations and an opportunity to engage with other large businesses or organizations aiming for similar quality financial services.

Growth & Leadership Recent promotions of key personnel like Erin Weinberg and Sami DeMarchi demonstrate a focus on leadership development and service excellence, which could be leveraged to position advanced consulting or training solutions to enhance operational efficiency.

Digital & Tech Savvy Utilizing modern technologies such as jQuery, ASP.NET, and Windows Server indicates an openness to digital tools and solutions, presenting opportunities to offer customized technology integrations or cybersecurity services to optimize their digital infrastructure.

Similar companies to Sisterson & Co. LLP

Sisterson & Co. LLP Tech Stack

Sisterson & Co. LLP uses 8 technology products and services including jQuery, FancyBox, imagesLoaded, and more. Explore Sisterson & Co. LLP's tech stack below.

  • jQuery
    Javascript Libraries
  • FancyBox
    Javascript Libraries
  • imagesLoaded
    Javascript Libraries
  • Windows Server
    Operating Systems
  • X-XSS-Protection
    Security
  • reCAPTCHA
    Security
  • Microsoft ASP.NET
    Web Frameworks
  • AddThis
    Widgets

Sisterson & Co. LLP's Email Address Formats

Sisterson & Co. LLP uses at least 1 format(s):
Sisterson & Co. LLP Email FormatsExamplePercentage
FLast@sisterson.comJDoe@sisterson.com
70%
FirstLast@sisterson.comJohnDoe@sisterson.com
16%
FiLast@sisterson.comJoDoe@sisterson.com
10%
FMLast@sisterson.comJMDoe@sisterson.com
4%

Frequently Asked Questions

Where is Sisterson & Co. LLP's headquarters located?

Minus sign iconPlus sign iconSisterson & Co. LLP's main headquarters is located at 310 Grant Street Suite 2100 Pittsburgh, Pennsylvania 15219 United States. The company has employees across 1 continents, including North America.

What is Sisterson & Co. LLP's phone number?

Minus sign iconPlus sign icon You can contact Sisterson & Co. LLP's main corporate office by phone at
+1-412-281-****
. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Sisterson & Co. LLP's official website and social media links?

Minus sign iconPlus sign iconSisterson & Co. LLP's official website is sisterson.com and has social profiles on LinkedIn.

What is Sisterson & Co. LLP's SIC code NAICS code?

Minus sign iconPlus sign iconSisterson & Co. LLP's SIC code is 7389 - Business Services, Not Elsewhere Classified NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

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

Minus sign iconPlus sign iconAs of April 2026, Sisterson & Co. LLP has approximately 123 employees across 1 continents, including North America. Key team members include Partner - Assurance Services: J. S.Partner: J. N.Partner - Consulting Services: M. W.. Explore Sisterson & Co. LLP's employee directory with LeadIQ.

What industry does Sisterson & Co. LLP belong to?

Minus sign iconPlus sign iconSisterson & Co. LLP operates in the Accounting industry.

What technology does Sisterson & Co. LLP use?

Minus sign iconPlus sign iconSisterson & Co. LLP's tech stack includes jQueryFancyBoximagesLoadedWindows ServerX-XSS-ProtectionreCAPTCHAMicrosoft ASP.NETAddThis.

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

Minus sign iconPlus sign iconSisterson & Co. LLP's email format typically follows the pattern of FLast@sisterson.com. Find more Sisterson & Co. LLP email formats with LeadIQ.

When was Sisterson & Co. LLP founded?

Minus sign iconPlus sign iconSisterson & Co. LLP was founded in 1926.

Sisterson & Co. LLP

AccountingPennsylvania, United States51-200 Employees

Sisterson is one of the largest independently-owned certified public accounting and financial consulting firms in the Pittsburgh area.  

Our growth since the firm's inception in 1926 has been deliberate and steady as services and staff are added to meet the needs of our clients. The firm presently serves hundreds of clients and takes pride in preserving a tradition that began 100 years ago - delivering quality service and value to each client while developing long-term relationships.

Our mission is to enhance the success of our clients through our commitment, creativity, and competencies as a respected and responsive provider of value-added financial services.

The professionals at Sisterson provide: tax, audit and accounting, consulting, and field exam services.

We work in a variety of industries, but consider these as areas of expertise for our firm: manufacturing and distribution, private investment companies, not-for-profit, private foundations, real estate, energy, professional services, technology, and employee benefit plans.

Section iconCompany Overview

Headquarters
310 Grant Street Suite 2100 Pittsburgh, Pennsylvania 15219 United States
Phone number
+1-412-281-****
Website
sisterson.com
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1926
Employees
51-200

Section iconMedia & News

Section iconFunding & Financials

  • $100M$250M

    Sisterson & Co. LLP's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Sisterson & Co. LLP's revenue is estimated to be in the range of $100M$250M

Company Leadership

  • Stylized image of a person
    J. S.
    Partner - Assurance Services
    Phone icon
    Mobile Phone
  • Stylized image of a person
    J. N.
    Partner
    Phone icon
    Mobile Phone
  • Stylized image of a person
    M. W.
    Partner - Consulting Services
    Phone icon
    Mobile Phone
  • Stylized image of a person
    D. O.
    Managing Partner
    Phone icon
    Mobile Phone
  • Stylized image of a person
    M. U.
    Partner - Assurance Services
    Phone icon
    Mobile Phone

Employee Directory

  • Stylized image of a person
    M. R.
    Partner
    Phone icon
    Mobile Phone
  • Stylized image of a person
    W. M. R.
    Partner
    Phone icon
    Mobile Phone
  • Stylized image of a person
    L. D.
    Partner - Finance & Operations
    Phone icon
    Mobile Phone
  • Stylized image of a person
    E. L.
    Owner
    Phone icon
    Mobile Phone
  • Stylized image of a person
    J. S.
    Partner
    Phone icon
    Mobile Phone

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