ARCA BIOPHARMA INC

CUSIP: 00211Y407 Class: COM PAR$.001

RA CAPITAL MANAGEMENT, L.P.'s Holding History (CIK: 0001346824)

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

Q4 2016
Shares 232,245 Value ($000) $662 Avg Close — Range —
Q3 2016
Shares 521,606 Value ($000) $1,476 Avg Close — Range —
Q2 2016
Shares 562,693 Value ($000) $1,632 Avg Close — Range —
Q1 2016
Shares 778,211 Value ($000) $2,700 Avg Close — Range —
Q4 2015
Shares 778,211 Value ($000) $3,619 Avg Close — Range —
Q3 2015
Shares 811,227 Value ($000) $4,024 Avg Close — Range —