Marielle Alexander

Marielle Alexander is an Associate at 1843 Capital based in New York City, New York, where she specializes in early-stage venture capital investments. Since joining the firm in 2023, she has supported deal sourcing, investment analysis, and operations for a platform that manages over $300 million in assets across more than 50 portfolio companies. Her investment scope targets seed and Series A-stage startups operating within deep tech, artificial intelligence, and climate tech, aligning with the firm's recent deep tech fund closure in the first quarter of 2025. Operating within a broader venture ecosystem influenced by figures like Peter Thiel and networks such as Founders Fund and Y Combinator, she actively evaluates emerging technological innovations. Alexander currently focuses on identifying and backing early-stage founders who are building transformative artificial intelligence and frontier technology enterprises.