Turnstone Biologics Corp. Common Stock. Replay the stock market charts of TSBX day by day, back to 2003. Open long and short positions without spending any money. Turnstone Biologics Corp., a clinical stage biotechnology company, focuses on developing medicines to treat and cure patients with solid tumors. The company's lead product includes TIDAL-01 that is in Phase 1 clinical trials for the treatment of breast cancer, colorectal cancer, and uveal melanoma, as well as an investigator sponsored trial to treat cutaneous and non-cutaneous melanomas. It is also developing TIDAL-02, which is in preclinical development for the treatment of solid tumors. The company was founded in 2014 and is based in LA Jolla, California.