John Aronsohn is a seasoned professional currently serving as the Senior Strategic Partnerships Lead at Portrait Analytics and an Executive in Residence at .406 Ventures since 2025. With extensive experience at GLG from 2011 to 2025, John managed global enterprise relationships in financial services, held the position of Director of Sales & Business Development, and served as Senior Vice President of Research/Customer Success for Banking and Investment Management. Previous roles include Interim Head of the Technology, Media & Telecommunications Practice, Vice President of Client Solutions at GLG, and Vice President and Group Head at Gerson Lehrman Group, where leadership of a global team focused on the TMT segment was pivotal. John's career began at GE Capital, underwriting investments in media and telecommunications, and earlier experience includes roles as a Senior Analyst at The Yankee Group and Survey Analyst at CBS News. John holds an MBA from Columbia Business School and a BA in Government from Dartmouth College.
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