MAGENTA THERAPEUTICS INC

CUSIP: 55910K108 Class: COM

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

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

Q3 2020
Shares 800 Value ($000) $5 Avg Close — Range —
Q2 2020
Shares 500 Value ($000) $4 Avg Close — Range —
Q1 2020
Shares 200 Value ($000) $1 Avg Close — Range —
Q4 2019
Shares 400 Value ($000) $6 Avg Close — Range —