William O'Sullivan

William O'Sullivan serves as Chief Executive Officer at Seabrook Technology Group. Seabrook Technology Group operates in the information technology & services sector with approximately 37.0 employees. The company is headquartered in San Francisco, California. Seabrook Technology Group generates annual revenue of 2400000.0.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • We have verified contacts for 2 executives at Seabrook Technology Group.
• • 13,743 executive contacts are available in California.
• • Our database includes 201,469 c suite-level executives.

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John Quirke Chief Operating Officer (COO) at Seabrook Technology Group at Seabrook Technology Group

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Marvin Jo CTO at 위블링

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Robert Kim CEO, North America at 당근마켓

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Kyung Lim CTO at 인터파크

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Alex Ryu Chief Operating Officer, Supply Chain Solutions Group at 동양시스템즈(주)

Outreach Guidance — information technology & services Sector

Technology executives make decisions on infrastructure, tooling, and partnerships. When reaching out to William O'Sullivan, lead with your value proposition relative to the stack they currently use. Generic pitches perform poorly; specific technical relevance is key.

William O'Sullivan's Position in the MessageCEO Database

• •William O'Sullivan is 1 of 2 verified executive contacts we track at Seabrook Technology Group.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •12,901 verified executive contacts in California are in the database.
• •632 verified contacts work at information technology & services companies in the 37.0 employee range (same size as Seabrook Technology Group).

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 We do not publish personal addresses or sensitive identifiers.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 William O'Sullivan directly?

William O'Sullivan's verified email address is available to MessageCEO Pro subscribers. They currently serve as Chief Executive Officer at Seabrook Technology Group. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does William O'Sullivan work for?

William O'Sullivan is Chief Executive Officer at Seabrook Technology Group, a company in the information technology & services sector with 37.0 employees. The company is based in San Francisco, California.

Can I pitch or sell to William O'Sullivan?

As Chief Executive Officer at Seabrook Technology Group, William O'Sullivan is a key decision-maker in the information technology & services sector. MessageCEO Pro gives you verified email to reach William O'Sullivan directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is William O'Sullivan in?

William O'Sullivan works in the information technology & services industry as Chief Executive Officer at Seabrook Technology Group. MessageCEO provides verified contact information for executives across all major industries.

Is William O'Sullivan's contact information verified?

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

Last updated: July 21, 2026