MANDIANT INC

CUSIP: 562662106 Class: COM

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

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

Q1 2022
Shares 131,531 Value ($000) $2,934 Avg Close — Range —
Q4 2021
Shares 127,917 Value ($000) $2,244 Avg Close — Range —