ATYR PHARMA INC

CUSIP: 002120103 Class: COM

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018
Shares 3,917,972 Value ($000) $10,579 Avg Close — Range —
Q4 2017
Shares 3,917,972 Value ($000) $13,713 Avg Close — Range —
Q3 2017
Shares 3,934,849 Value ($000) $19,871 Avg Close — Range —
Q2 2017
Shares 2,292,659 Value ($000) $7,795 Avg Close — Range —
Q1 2017
Shares 2,292,659 Value ($000) $8,024 Avg Close — Range —
Q4 2016
Shares 976,986 Value ($000) $2,101 Avg Close — Range —
Q1 2016
Shares 74,959 Value ($000) $295 Avg Close — Range —
Q4 2015
Shares 790,462 Value ($000) $7,770 Avg Close — Range —
Q3 2015
Shares 840,462 Value ($000) $8,623 Avg Close — Range —
Q2 2015
Shares 836,860 Value ($000) $15,499 Avg Close — Range —