Greg O'Brien

Greg O'Brien serves as CEO at GO CPA LLC. GO CPA LLC operates in the accounting sector with approximately 22.0 employees. The company is headquartered in Boston, Massachusetts.

Industry & Role Insights

• • MessageCEO tracks 716 executives in the accounting sector.
• • 3,781 executive contacts are available in Massachusetts.
• • Our database includes 201,468 c suite-level executives.

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Ryan Teeples Fintech CTO at 1-800Accountant

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Michael Marget Senior Managing Director & CEO at 4L Law Firm Services

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Haroon Moosa CEO at A2A Kopano Incorporated

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Ari Kelloniemi CEO at Aallon Group Oyj

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Robert Dam Pres / CEO at AAT

Outreach Guidance — accounting Sector

Executives like Greg O'Brien in the accounting sector receive targeted outreach from sales teams, recruiters, and investors. To stand out, personalize your message with industry-specific context and a clear, specific value proposition relevant to their role at GO CPA LLC.

Greg O'Brien's Position in the MessageCEO Database

• •Greg O'Brien is 1 of 1 verified executive contact we track at GO CPA LLC.
• •704 verified executive contacts in accounting are in the MessageCEO database.
• •3,577 verified executive contacts in Massachusetts are in the database.
• •8 verified contacts work at accounting companies in the 22.0 employee range (same size as GO CPA LLC).

Executive contact data compiled from public business filings, LinkedIn public profiles, company press materials, and verified outbound email testing. We do not publish personal addresses or sensitive identifiers. Methodology & sources · Removal requests handled at /remove-info · Updated July 2026.

How do I reach Greg O'Brien directly?

Greg O'Brien's verified email address is available to MessageCEO Pro subscribers. They currently serve as CEO at GO CPA LLC. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Greg O'Brien work for?

Greg O'Brien is CEO at GO CPA LLC, a company in the accounting sector with 22.0 employees. The company is based in Boston, Massachusetts.

Can I pitch or sell to Greg O'Brien?

As CEO at GO CPA LLC, Greg O'Brien is a key decision-maker in the accounting sector. MessageCEO Pro gives you verified email to reach Greg O'Brien directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Greg O'Brien in?

Greg O'Brien works in the accounting industry as CEO at GO CPA LLC. MessageCEO provides verified contact information for executives across all major industries.

Is Greg O'Brien's contact information verified?

Yes. MessageCEO verifies executive contact information through multiple data sources and regular validation checks. Greg O'Brien's profile is kept up-to-date with the latest available information.

Last updated: July 26, 2026