PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

ELEMENT CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001535630)

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

Q1 2018
Shares 33,360 Value ($000) $158 Avg Close — Range —
Q2 2017
Shares 65,973 Value ($000) $309 Avg Close — Range —