Transaction Details

Footnotes

On April 1, 2026, AnaptysBio, Inc., a Delaware corporation ("AnaptysBio"), reported that it owned 100 shares of common stock, par value $0.001 per share, of First Tracks Biotherapeutics, Inc. ("First Tracks"), which at the time constituted all of the issued and outstanding shares of common stock of First Tracks. | The record date for the distribution by AnaptysBio of all shares of common stock of First Tracks to the holders of AnaptysBio common stock was April 20, 2026 (the "Spin-Off"). The Spin-Off occurred before the market opened on April 20, 2026. | Represents the outstanding shares of common stock of First Tracks as of April 20, 2026, which were distributed in the Spin-Off as defined in footnote 2 on April 20, 2026.