Guillermo Mayer

Guillermo Mayer serves as President & CEO at Public Advocates. Public Advocates operates in the law practice sector with approximately 69.0 employees. The company is headquartered in San Francisco, California. Public Advocates generates annual revenue of 4366000.0.

Industry & Role Insights

• • MessageCEO tracks 579 executives in the law practice sector.
• • We have verified contacts for 2 executives at Public Advocates.
• • 13,743 executive contacts are available in California.
• • Our database includes 201,469 c suite-level executives.

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Jamienne Studley CEO at Public Advocates

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Lucia Maggi Chief Executive Officer and Partner at 42 Law Firm

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Shane Duffy Chief Executive Officer at Aboriginal and Torres Strait Islander Legal Service (QLD) Ltd

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Emon Ahmed Chief Executive Officer at Ackroyd Legal

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Bill Vance Chief Technology Officer at Adams and Reese LLP

Outreach Guidance — law practice Sector

Executives like Guillermo Mayer in the law practice 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 Public Advocates.

Guillermo Mayer's Position in the MessageCEO Database

• •Guillermo Mayer is 1 of 2 verified executive contacts we track at Public Advocates.
• •572 verified executive contacts in law practice are in the MessageCEO database.
• •12,901 verified executive contacts in California are in the database.
• •4 verified contacts work at law practice companies in the 69.0 employee range (same size as Public Advocates).

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 We do not publish personal addresses or sensitive identifiers.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 June 2026.

How do I reach Guillermo Mayer directly?

Guillermo Mayer's verified email address is available to MessageCEO Pro subscribers. They currently serve as President & CEO at Public Advocates. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Guillermo Mayer work for?

Guillermo Mayer is President & CEO at Public Advocates, a company in the law practice sector with 69.0 employees. The company is based in San Francisco, California.

Can I pitch or sell to Guillermo Mayer?

As President & CEO at Public Advocates, Guillermo Mayer is a key decision-maker in the law practice sector. MessageCEO Pro gives you verified email to reach Guillermo Mayer directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Guillermo Mayer in?

Guillermo Mayer works in the law practice industry as President & CEO at Public Advocates. MessageCEO provides verified contact information for executives across all major industries.

Is Guillermo Mayer's contact information verified?

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

Last updated: June 22, 2026