Simple-Fill: Ohio State spinoff raises $420,000 toward CNG compressor technology

Ohio State University spinoff Simple-Fill Inc., working toward developing production models of low-cost, low-maintenance natural gas compressors, has raised $420,000 of a potential $450,000 round, according to a regulatory filing. CEO Rob Underhill said he could not comment on the still-open round. Founders typically do not comment until a private round is closed to avoid incurring extra Securities and Exchange Commission requirements of a public offering. There are six investors in the round, according...