POTBELLY CORP

CUSIP: 73754Y100 Class: Common Stock

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q2 2019
Shares 63,500 Value ($000) $324 Avg Close — Range —
Q1 2019
Shares 144,614 Value ($000) $1,231 Avg Close — Range —
Q4 2018
Shares 64,200 Value ($000) $517 Avg Close — Range —
Q3 2017
Shares 47,003 Value ($000) $583 Avg Close — Range —
Q2 2017
Shares 99,442 Value ($000) $1,144 Avg Close — Range —
Q1 2017
Shares 91,742 Value ($000) $1,276 Avg Close — Range —
Q4 2016
Shares 89,242 Value ($000) $1,152 Avg Close — Range —
Q3 2016
Shares 66,312 Value ($000) $825 Avg Close — Range —