ZAFGEN INC

CUSIP: 98885E103 Class: Cmn

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

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

Q3 2015
Shares 390,346 Value ($000) $12,472 Avg Close — Range —
Q2 2015
Shares 287,677 Value ($000) $9,962 Avg Close — Range —
Q1 2015
Shares 94,745 Value ($000) $3,753 Avg Close — Range —