PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

Ameritas Investment Partners, Inc.'s Holding History (CIK: 0001055980)

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

Q1 2019
Shares 2,293 Value ($000) $3 Avg Close — Range —
Q4 2018
Shares 2,293 Value ($000) $7 Avg Close — Range —
Q3 2018
Shares 2,293 Value ($000) $6 Avg Close — Range —
Q2 2018
Shares 2,293 Value ($000) $6 Avg Close — Range —
Q1 2017
Shares 494 Value ($000) $4 Avg Close — Range —