MAST THERAPEUTICS INC

CUSIP: 576314108 Class: COM

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q1 2017
Shares 183,283 Value ($000) $23 Avg Close — Range —
Q4 2016
Shares 12,718 Value ($000) $1 Avg Close — Range —
Q1 2016
Shares 1,032 Value ($000) $0 Avg Close — Range —
Q4 2015
Shares 7,873 Value ($000) $3 Avg Close — Range —