ELEVEN BIOTHERAPEUTICS INC

CUSIP: 286221106 Class: CMN

PRINCIPAL FINANCIAL GROUP INC's Holding History (CIK: 0001126328)

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

Q1 2015

Shares 98,500 Value ($000) $878 Avg Close — Range —

Q4 2014

Shares 97,600 Value ($000) $1,159 Avg Close — Range —

Q3 2014

Shares 95,300 Value ($000) $1,062 Avg Close — Range —

Q2 2014

Shares 95,300 Value ($000) $1,256 Avg Close — Range —

Q1 2014

Shares 95,300 Value ($000) $1,547 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	98,500	$878	—	—
Q4 2014	97,600	$1,159	—	—
Q3 2014	95,300	$1,062	—	—
Q2 2014	95,300	$1,256	—	—
Q1 2014	95,300	$1,547	—	—