Synthorx, Inc.

RA CAPITAL MANAGEMENT, L.P.

Report date

12/31/2019

Quarter

2019 Q4

Filed

2/14/2020

Shares

9,724,598

Value ($000)

679,652

Weight

20.6%

2019 Q4 - 2019 Q4 (1 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2019 Q4	2/14/2020	679,652	21%	9,724,598	12/31/2019