MONTROSE ENVIRONMENTAL GROUP

Ticker: MEG CUSIP: 615111101 Class: Common Stock

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

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

Q4 2025
Shares 6,182 Value ($000) $153 Avg Close $26.42 Range $23.36 - $30.90
Q3 2025
Shares 12,439 Value ($000) $342 Avg Close $26.13 Range $20.34 - $32.00
Q2 2025
Shares 11,042 Value ($000) $242 Avg Close $17.93 Range $10.51 - $24.00
Q1 2025
Shares 15,530 Value ($000) $221 Avg Close $19.04 Range $13.79 - $24.79
Q4 2024
Shares 1,544 Value ($000) $29 Avg Close $21.03 Range $15.21 - $28.27
Q1 2024
Shares 129 Value ($000) $5 Avg Close $33.50 Range $25.98 - $42.72
Q2 2022
Shares 860 Value ($000) $29 Avg Close $41.81 Range $28.36 - $57.49
Q1 2022
Shares 729 Value ($000) $39 Avg Close $49.52 Range $38.35 - $71.45