ATYR PHARMA INC

CUSIP: 002120103 Class: COM

BAKER BROS. ADVISORS LP's Holding History (CIK: 0001263508)

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

Q1 2016
Shares 2,137,606 Value ($000) $8,422 Avg Close — Range —
Q4 2015
Shares 2,335,125 Value ($000) $22,954 Avg Close — Range —
Q3 2015
Shares 2,335,125 Value ($000) $23,958 Avg Close — Range —
Q2 2015
Shares 2,335,125 Value ($000) $43,247 Avg Close — Range —