General Info
Mark Jacobstein, an investor, focuses on investment areas such as Advertising, Games, Social Networks, Media/Content, Marketplaces, Enterprise, and AI at the Pre-seed and Seed stages. His previous investments include companies like OurHealthMate, Scoot, Disconnect, and Badongo.com. Mark’s career spans entrepreneurial technology in health tech, biotech, molecular diagnostics, and digital health fields. He has a track record of founding a fantasy sports business in the early 90s and later progressing to consulting for leading companies like Xerox and McKinsey. The investment check size for Jimini Health, a company he is associated with, is in the early-stage VC range. Mark Jacobstein’s partnership and collaboration style reflect a focus on systemic paradigm-shifting changes in technology and a proactive approach to business growth.
Location: Redwood City, CA
Country: United States of America
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Investment Regions:
Investment Stages: pre-seed, seed
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🤖 AI Activity Report
Status: very-active
AI Reasoning: I found a Nov 2024 seed funding event for Jimini Health (co-founded by Mark Jacobstein) with press coverage on Nov 19-28, 2024 indicating investment or co-founder activity. The most recent activity related to him includes podcast and team updates into mid-2025 (June 2025), showing involvement within the last 6 months from the evaluation date. The company Jimini Health is named as a recent venture. Therefore the investor is classified as very-active.
Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.
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