Insights

Niche client mix Small firm with 2-10 employees serving about 700 clients across not-for-profit, financial services, distribution, manufacturing, retail, service, and transportation. Opportunity to upsell cross-border or specialized audit, tax, and consulting services tailored to small nonprofits and niche sectors.

Sustainability potential Diverse client base includes not-for-profit and service sectors where governance, budgeting, and transparency are critical. Potential offerings in budgeting and forecasting, internal audit outsourcing, and compliance assistance aligned with evolving nonprofit and financial service reporting standards.

Technology leverage Current tech stack shows use of GoDaddy; indicates room to introduce modern cloud-based accounting, SaaS financial systems, and data analytics tools to improve efficiency, client collaboration, and automated reporting for small clients.

Growth signals Revenue in the mid six-figure to mid seven-figure range suggests capacity to scale services. Targeted outreach to expand service lines such as forensic, transaction advisory, and budgeting/forecasting for current clients and nearby firms in similar industries.

Strategic partnerships Experience with outsourced internal audit and specialized transactional consulting positions the firm to partner with mid-market clients needing fractional internal controls, risk advisory, and niche financial advisory services as they grow.

J.M. O'Brien & Co. Tech Stack

J.M. O'Brien & Co. uses 1 technology products and services including GoDaddy, and more. Explore J.M. O'Brien & Co.'s tech stack below.

  • GoDaddy
    Web Hosting

J.M. O'Brien & Co.'s Email Address Formats

J.M. O'Brien & Co. uses at least 1 format(s):
J.M. O'Brien & Co. Email FormatsExamplePercentage
FLast@jmobrien.comJDoe@jmobrien.com
79%
Last@jmobrien.comDoe@jmobrien.com
21%

Frequently Asked Questions

What is J.M. O'Brien & Co.'s phone number?

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You can contact J.M. O'Brien & Co.'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 J.M. O'Brien & Co.'s official website and social media links?

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J.M. O'Brien & Co.'s official website is jmobrien.com and has social profiles on LinkedIn.

How much revenue does J.M. O'Brien & Co. generate?

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As of July 2026, J.M. O'Brien & Co.'s annual revenue is estimated to be $10M - $25M.

What is J.M. O'Brien & Co.'s NAICS code?

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J.M. O'Brien & Co.'s NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does J.M. O'Brien & Co. have currently?

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As of July 2026, J.M. O'Brien & Co. has approximately 9 employees across 2 continents, including North AmericaAsia. Key team members include Audit Specialist: M. C.. Explore J.M. O'Brien & Co.'s employee directory with LeadIQ.

What industry does J.M. O'Brien & Co. belong to?

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J.M. O'Brien & Co. operates in the Accounting industry.

What technology does J.M. O'Brien & Co. use?

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J.M. O'Brien & Co.'s tech stack includes GoDaddy.

What is J.M. O'Brien & Co.'s email format?

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J.M. O'Brien & Co.'s email format typically follows the pattern of FLast@jmobrien.com. Find more J.M. O'Brien & Co. email formats with LeadIQ.

When was J.M. O'Brien & Co. founded?

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J.M. O'Brien & Co. was founded in 1991.
J.M. O'Brien & Co. logo

J.M. O'Brien & Co.

AccountingMassachusetts, United States2-10 Employees

J.M. O’Brien & Co. is a small accounting firm based in Springfield, Massachusetts, established in 1991 by John M. O’Brien. The firm serves a diverse client base, delivering auditing and accounting services plus tax support to about 700 clients across sectors such as not-for-profit organizations, financial services, manufacturing, distribution, retail, service, and transportation. In addition to core audit and tax work, the firm offers nontraditional services including litigation support, budgeting and forecasting, outsourced internal audit, and specialized transactional consulting. The practice positions itself in the accounting industry as a provider of both routine financial services and value-added advisory support to a broad range of entities. The company operates from its Springfield location with a lean professional footprint, emphasizing a suite of services tailored to organizations needing comprehensive financial oversight and strategic assistance.

Section iconCompany Overview

Phone number
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1991
Employees
2-10

Section iconFunding & Financials

  • $10M - $25M

    J.M. O'Brien & Co.'s revenue is estimated to be in the range of $10M - $25M

Section iconFunding & Financials

  • $10M - $25M

    J.M. O'Brien & Co.'s revenue is estimated to be in the range of $10M - $25M

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