Insights

Firm Growth Independent, long-standing Pittsburgh CPA and financial consulting firm with steady growth since 1926 and a multi-disciplinary service offering. This suggests opportunities to position scalable services and value-added collaborations as their client base expands.

Industry Reach Diverse industry expertise including manufacturing, private investment, not-for-profit, real estate, energy, and tech. Target sales plays across these sectors, highlighting specialized compliance, reporting, and optimization services tailored to their verticals.

Tech Footprint Adoption of common productivity and analytics tools (Microsoft Office suite, Google Analytics, JSON-LD) indicates receptiveness to data-driven solutions, automation, and digital transformation offerings that integrate with their existing tech stack.

Scale Opportunity Revenue in the high hundreds of thousands to mid-range hundreds of millions and a headcount of 51-200 position the firm for mid-market service enhancements, cloud-based audits, cybersecurity, and scalable outsourcing models.

Relationship Focus Long-term client relationships and emphasis on value-added services imply a sales approach centered on strategic advisory, ongoing compliance efficiency, and tailored consulting that deepen client retention and expand wallet share.

Similar companies to Sisterson & Co. LLP

Sisterson & Co. LLP Tech Stack

Sisterson & Co. LLP uses 8 technology products and services including UserWay, Canva, Zoho, and more. Explore Sisterson & Co. LLP's tech stack below.

Sisterson & Co. LLP's Email Address Formats

Sisterson & Co. LLP uses at least 4 email formats:
Sisterson & Co. LLP Email FormatsExamplePercentage
FLast@sisterson.comJDoe@sisterson.com
69%
FirstLast@sisterson.comJohnDoe@sisterson.com
15%
FiLast@sisterson.comJoDoe@sisterson.com
12%
FMLast@sisterson.comJMDoe@sisterson.com
4%

Frequently Asked Questions

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

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You can contact Sisterson & Co. LLP's main corporate office by phone at . 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?

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Sisterson & Co. LLP's official website is sisterson.com and has social profiles on LinkedIn.

How much revenue does Sisterson & Co. LLP generate?

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As of August 2026, Sisterson & Co. LLP's annual revenue is estimated to be $100M - $250M.

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

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

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

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As of August 2026, Sisterson & Co. LLP has approximately 122 employees across 1 continents, including North America. Key team members include Owner: E. L., Partner: J. S. and Tax Manager: A. S. Explore Sisterson & Co. LLP's employee directory with LeadIQ.

What industry does Sisterson & Co. LLP belong to?

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Sisterson & Co. LLP operates in the Accounting industry.

What technology does Sisterson & Co. LLP use?

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Sisterson & Co. LLP's tech stack includes UserWay, Canva, Zoho, Adobe Experience Cloud, Microsoft 365, Constant Contact, Adobe Creative Suite and Microsoft ASP.NET.

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

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Sisterson & 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?

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Sisterson & Co. LLP was founded in 1926.
Sisterson & Co. LLP logo

Sisterson & Co. LLP

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.

Section iconCompany Overview

Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1926
Employees
51-200

Section iconFunding & Financials

  • $100M - $250M

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

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