PROS HOLDINGS INC

CUSIP: 74346Y103 Class: Common Stock

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

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

Q3 2025
Shares 33 Value ($000) $1 Avg Close — Range —
Q2 2025
Shares 2,570 Value ($000) $40 Avg Close — Range —
Q3 2023
Shares 4,072 Value ($000) $141 Avg Close — Range —
Q1 2023
Shares 1,117 Value ($000) $31 Avg Close — Range —
Q4 2022
Shares 169 Value ($000) $4 Avg Close — Range —
Q4 2020
Shares 100 Value ($000) $5 Avg Close — Range —
Q1 2020
Shares 302 Value ($000) $9 Avg Close — Range —
Q4 2019
Shares 3,488 Value ($000) $209 Avg Close — Range —
Q3 2019
Shares 11,174 Value ($000) $666 Avg Close — Range —