Issued to
Alex Kastelic
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Credential Verification
Issue date: January 15, 2026
ID: 62755f0d-90a3-4e69-aafe-e69d0f0ff094
Issued by
The Marketing Leadership Masterclass
The Marketing Leadership Masterclass helps you build your influence and boost your career. From the world’s largest ever studies on marketers’ success. By Thomas Barta & Syl Saller.
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