PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

GSA CAPITAL PARTNERS LLP's Holding History (CIK: 0001362033)

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

Q3 2020
Shares 119,284 Value ($000) $131 Avg Close — Range —
Q2 2020
Shares 50,073 Value ($000) $69 Avg Close — Range —
Q1 2020
Shares 165,565 Value ($000) $189 Avg Close — Range —
Q3 2019
Shares 184,955 Value ($000) $156 Avg Close — Range —
Q2 2019
Shares 181,974 Value ($000) $178 Avg Close — Range —