Anaptysbio Inc. announced in September of 2025 that it planned to separate its drug development business from the royalties it receives on Jemperli (dostarlimab) from GSK plc and imsidolimab from Vanda Pharmaceuticals Inc. Just seven months later, on April 20, 2026, well ahead of its “year-end 2026” goal, First Tracks Biotherapeutics Inc., the drug development arm of the company, started trading as a standalone company on Nasdaq under the ticker symbol TRAX.