General Info
James Ruben is an experienced investor with a background in private equity and a focus on addressing US infrastructure needs. He has held Partner roles at BC Partners, One Equity Partners, and was a founding partner of JP Morgan’s private equity fund. James graduated from Harvard University and holds a law degree from Yale University. He has a track record of serving as the U.S. Assistant Secretary of State for Public Affairs and working as a commentator on international affairs. Currently, he is the CEO of North America at Meridiam, a leading investment firm. James Ruben’s investment focus areas include energy transition solutions like solar power for utilities, critical facilities, agriculture, telecom, off-grid power, and EV charging. He is associated with Aligned Climate Capital and is transforming kids’ educational content with Hellosaurus by creating interactive videos for children.
Location:
Country: United States of America
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Investment Stages: pre-seed, seed
angel-individual
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🤖 AI Activity Report
Status: very-active
AI Reasoning: Searches found recent activity: James S. “Jamie” Rubin is CIO at Aligned Climate Capital and associated with investments in climate tech and infrastructure. Aligned Climate Capital had fundraising and investment activity reported March 11, 2025 (LinkedIn/press) and other 2024-2025 coverage; additionally he is linked to investments such as BoxPower. The most recent known investment activity is within the past 6 months, so classify 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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