SURFACE ONCOLOGY INC

CUSIP: 86877M209 Class: COM

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

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

Q2 2023
Shares 6,774 Value ($000) $6 Avg Close — Range —
Q1 2023
Shares 6,774 Value ($000) $5 Avg Close — Range —
Q4 2022
Shares 23,245 Value ($000) $19 Avg Close — Range —
Q3 2022
Shares 36,619 Value ($000) $38 Avg Close — Range —
Q2 2022
Shares 39,736 Value ($000) $65 Avg Close — Range —
Q2 2021
Shares 10,217 Value ($000) $76 Avg Close — Range —
Q4 2020
Shares 13,578 Value ($000) $125 Avg Close — Range —