ZAFGEN INC

CUSIP: 98885E103 Class: Cmn

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q1 2020
Shares 300 Value ($000) $0 Avg Close — Range —
Q4 2019
Shares 300 Value ($000) $0 Avg Close — Range —
Q2 2019
Shares 1,400 Value ($000) $2 Avg Close — Range —
Q1 2019
Shares 5,072 Value ($000) $14 Avg Close — Range —
Q2 2018
Shares 3,002 Value ($000) $31 Avg Close — Range —
Q1 2018
Shares 402 Value ($000) $3 Avg Close — Range —
Q4 2017
Shares 3,826 Value ($000) $18 Avg Close — Range —
Q2 2017
Shares 4,826 Value ($000) $17 Avg Close — Range —
Q1 2017
Shares 2,647 Value ($000) $12 Avg Close — Range —
Q4 2016
Shares 18,718 Value ($000) $60 Avg Close — Range —
Q3 2016
Shares 21,718 Value ($000) $72 Avg Close — Range —
Q2 2016
Shares 142 Value ($000) $1 Avg Close — Range —
Q1 2016
Shares 3,160 Value ($000) $21 Avg Close — Range —
Q4 2015
Shares 8,710 Value ($000) $55 Avg Close — Range —
Q3 2015
Shares 8,476 Value ($000) $271 Avg Close — Range —