PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q4 2018
Shares 80,257 Value ($000) $260 Avg Close — Range —
Q3 2018
Shares 81,849 Value ($000) $197 Avg Close — Range —
Q2 2018
Shares 81,693 Value ($000) $228 Avg Close — Range —
Q1 2018
Shares 70,534 Value ($000) $335 Avg Close — Range —