Frank Tiemann

Frank Tiemann serves as CTO at Apex Clearing Corporation. Apex Clearing Corporation operates in the financial services sector with approximately 940.0 employees. The company is headquartered in Chicago, Illinois. Apex Clearing Corporation generates annual revenue of 30000000.0.

Industry & Role Insights

• • MessageCEO tracks 11,960 executives in the financial services sector.
• • We have verified contacts for 4 executives at Apex Clearing Corporation.
• • 3,772 executive contacts are available in Illinois.
• • Our database includes 201,464 c suite-level executives.

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Kevin Lupowitz CTO, Trading at Apex Clearing Corporation

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William Capuzzi CEO at Apex Clearing Corporation

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Joe Kuryla CTO - Apex Advisory at Apex Clearing Corporation

Outreach Guidance — financial services Sector

Financial services executives like Frank Tiemann prioritize security, compliance (SOC 2, SOX), and integration with existing systems. Reference industry-specific regulatory requirements and provide case studies from peer institutions.

Frank Tiemann's Position in the MessageCEO Database

• •Frank Tiemann is 1 of 4 verified executive contacts we track at Apex Clearing Corporation.
• •11,735 verified executive contacts in financial services are in the MessageCEO database.
• •3,510 verified executive contacts in Illinois are in the database.
• •30 verified contacts work at financial services companies in the 940.0 employee range (same size as Apex Clearing Corporation).

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 We do not publish personal addresses or sensitive identifiers.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

How do I reach Frank Tiemann directly?

Frank Tiemann's verified email address is available to MessageCEO Pro subscribers. They currently serve as CTO at Apex Clearing Corporation. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Frank Tiemann work for?

Frank Tiemann is CTO at Apex Clearing Corporation, a company in the financial services sector with 940.0 employees. The company is based in Chicago, Illinois.

Can I pitch or sell to Frank Tiemann?

As CTO at Apex Clearing Corporation, Frank Tiemann is a key decision-maker in the financial services sector. MessageCEO Pro gives you verified email to reach Frank Tiemann directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Frank Tiemann in?

Frank Tiemann works in the financial services industry as CTO at Apex Clearing Corporation. MessageCEO provides verified contact information for executives across all major industries.

Is Frank Tiemann's contact information verified?

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

Last updated: November 4, 2026