IPOS-1 filedAIM ImmunoTech Files S-1 as Biotech Joins the Reopening IPO PipelineAIM ImmunoTech filed an S-1 with the SEC, adding a clinical-stage biotech name to a public-market pipeline that has been widening past tech into energy and life sciences. Biotech listings have been among the slowest to thaw, so fresh filings are a useful read on whether risk appetite is returning to the sector.Jun 18, 2026