ARCA BIOPHARMA INC

CUSIP: 00211Y209 Class: COM NEW

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

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

Q3 2014
Shares 1,372 Value ($000) $2 Avg Close — Range —
Q2 2014
Shares 10 Value ($000) $0 Avg Close — Range —
Q1 2014
Shares 4,740 Value ($000) $8 Avg Close — Range —
Q4 2013
Shares 14,877 Value ($000) $25 Avg Close — Range —
Q2 2013
Shares 3,500 Value ($000) $5 Avg Close — Range —