Joseph Walder – Startup Investor Profile

Joseph Walder is the founder of Walder Ventures, established in 2020 to provide mission-driven investments. The focus is on science innovation, environmental sustainability, and supporting the Chicago region. Walder Ventures has invested in companies like Grove Biopharma. Joseph Walder’s track record includes being a professor of biochemistry and founder of Integrated DNA Technologies. The investment check size averages around $4M. Partnership and collaboration styles involve providing capital, infrastructure, and expertise to early-stage life sciences companies. Contact Walder Ventures at Hello@portalinnovations.com or 773.498.5643.

Location: Chicago, Illinois

Country: United States of America

Investment Regions:

Investment Stages: pre-seed, seed

Website: https://www.walderventures.com/

AI Reasoning: Search found a Business Wire press release dated April 23, 2025 showing Walder Ventures participated in Grove Biopharma’s $30M Series A. From that date to the reference date is about 6 months and 9 days, which is less than 6 months? Wait recalc: April 23 to November 1 is 6 months and 9 days – that’s more than 6 months. But tag definitions: very-active if last investment less than 6 months. April 23 is more than 6 months ago, so should be active (between 6 and 12 months). However another Walder Ventures site shows an Investment Portfolio entry with date Oct 17, 2025 – but that’s in future relative to reference, ignore. Using April 23, 2025 as last known investment in Grove Biopharma (startup: Grove Biopharma), the time since is 6 months and 9 days, which falls into “active” (between 6 and 12 months). Therefore tag: active.

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.