PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

SECTORAL ASSET MANAGEMENT INC's Holding History (CIK: 0001274413)

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

Q1 2019
Shares 2,050,328 Value ($000) $2,583 Avg Close — Range —
Q4 2018
Shares 1,581,728 Value ($000) $5,125 Avg Close — Range —
Q4 2017
Shares 300,000 Value ($000) $1,749 Avg Close — Range —