ALEXZA PHARMACEUTICALS INC

CUSIP: 015384209 Class: CMN

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

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

Q4 2015
Shares 1,068 Value ($000) $0 Avg Close — Range —
Q3 2015
Shares 915 Value ($000) $1 Avg Close — Range —
Q1 2015
Shares 227 Value ($000) $0 Avg Close — Range —
Q4 2014
Shares 304 Value ($000) $0 Avg Close — Range —
Q3 2014
Shares 882 Value ($000) $2 Avg Close — Range —
Q2 2014
Shares 1,209 Value ($000) $6 Avg Close — Range —
Q1 2014
Shares 614 Value ($000) $3 Avg Close — Range —
Q4 2013
Shares 586 Value ($000) $3 Avg Close — Range —
Q3 2013
Shares 887 Value ($000) $4 Avg Close — Range —
Q2 2013
Shares 23 Value ($000) $0 Avg Close — Range —