• Manage a high-volume, dynamic, cross-time-zone calendar; prevent conflicts and sequence priorities. • Serve as liaison to internal/external stakeholders; draft and triage emails/messages in the executive voice. • Plan end-to-end domestic and international travel: flights, hotels, ground transport, dining, visas, and contingency plans. • Process bills, invoices, reimbursements, and expenses; liaise with accounting/finance and vendors. • Coordinate across the executive’s portfolio (investments, books, podcasts, speaking engagements, and other ventures). • Maintain organized files, contacts, and knowledge bases; ensure information is current, searchable, and secure. • Handle sensitive information with absolute discretion; manage access, permissions, and privacy.