X0206 3 2020-01-01 0 0001731831 Eidos Therapeutics, Inc. EIDX 0001699848 Valle Franco C/O EIDOS THERAPEUTICS, INC. 101 MONTGOMERY STREET, SUITE 2000 SAN FRANCISCO CA 94104 0 1 0 0 Senior Vice President, Finance Stock Option (right to buy) 7.24 2028-05-06 Common Stock 49419 D The option, originally representing a right to purchase a total of 77,919 shares, vested and became exercisable as to 25% of the original option on March 28, 2019, and the remainder vests in 36 additional monthly installments thereafter, subject to the Reporting Person's continuous service to the Issuer. /s/ Franco Valle 2020-01-09