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Gross-Wen Technologies

Des Moines, Iowa, United States · Biotechnology, Information Technology, Water · 21 employees

Gross-Wen Technologies (GWT) is a leading algae based wastewater treatment technology company, dedicated to using algae to recover nitrogen and phosphorus from wastewater in a sustainable way. GWT's unique algae-based treatment solution, the revolving algal biofilm system (RAB), is considered one of the top algae treatment systems in the world.

Funding history

  • Series seed — $1.0M — Aug 2025
  • Funding Round — $8.0M — Jun 2025
  • Series seed — $1.0M — Jun 2025
  • Funding Round — $8.0M — Feb 2025
  • Funding Round — $6.7M — Sep 2024

Recent signals

  • Aug 04, 2025: Raised $1.0M in Series seed
  • Jun 13, 2025: Raised $8.0M
  • Jun 13, 2025: Raised $1.0M in Series seed
  • Feb 27, 2025: Raised $8.0M
  • Sep 05, 2024: Raised $6.7M
  • Sep 03, 2024: Raised $6.7M
  • Feb 15, 2024: Gross-Wen Technologies Welcomes Ken Rubin as its first President, Elevating the Company's Strategic Leadership
  • Apr 12, 2023: Raised $4.1M in Series seed

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