X0306 4 2019-05-24 0 0001731831 Eidos Therapeutics, Inc. EIDX 0001742485 Kumar Neil C/O EIDOS THERAPEUTICS, INC. 101 MONTGOMERY STREET, SUITE 2550 SAN FRANCISCO CA 94104 1 1 1 0 Chief Executive Officer Common Stock 2019-05-24 4 P 0 1103848 25.93 A 23693148 I See Footnote The shares are owned by BridgeBio Pharma LLC. The Reporting Person is the chief executive officer and a member of the board of managers of BridgeBio Pharma LLC and may be deemed to beneficially own the shares held by BridgeBio Pharma LLC. The Reporting Person disclaims beneficial ownership of the shares for Section 16 purposes or for any other purpose, except to the extent of his pecuniary interest therein. /s/ Franco Valle, as Attorney-in-Fact 2019-05-29