Paul Seidler – Startup Investor Profile

Paul Seidler is the Managing Director at Evergreen Climate Innovations, overseeing investment activities and portfolio management for early-stage cleantech and climate tech startups. With a track record of participating in over 30 transactions totaling nearly $6 million, Paul has also served as a board director for 14 portfolio companies. He leads Evergreen’s CEO Summit, focusing on structured fundraising initiatives and mentoring activities. Paul’s investment focus areas include early-stage cleantech and climate tech startups in the Midwest. Geographically, his preference is in Chicago, with a focus on early-stage investments. Paul’s check sizes typically range for institutional capital raising. His partnership and collaboration styles involve active engagement with portfolio founders and CEOs, fostering a collaborative and supportive environment for growth.

Location: Chicago, Illinois

Country: United States of America

Investment Regions:

Investment Stages: pre-seed, seed

Website: https://www.evergreeninno.org/about-us/people/paul-seidler

AI Reasoning: I found evidence of Paul Seidler’s ongoing investment activity at Evergreen Climate Innovations, including participation in recent portfolio activities and public mentions of engagement as recently as September 2025 (e.g., company communications and social posts referencing Evergreen’s investments and Paul Seidler’s role). The most recent identified investment involvement includes a portfolio company named Applied Thin Films (previous role noted) and other portfolio mentions tied to Evergreen; referenced activity within the past 6 months places him in the highest activity category.

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.