ATHERSYS INC

CUSIP: 04744L106 Class: COM

PERCEPTIVE ADVISORS LLC's Holding History (CIK: 0001224962)

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

Q2 2014
Shares 601,852 Value ($000) $1,077 Avg Close — Range —
Q1 2014
Shares 701,582 Value ($000) $2,273 Avg Close — Range —
Q4 2013
Shares 1,700,887 Value ($000) $4,252 Avg Close — Range —
Q3 2013
Shares 2,150,117 Value ($000) $3,526 Avg Close — Range —
Q2 2013
Shares 3,479,206 Value ($000) $5,775 Avg Close — Range —