CYBERONICS INC

CUSIP: 23251P102 Class: COMMON STOCK

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

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

Q3 2015
Shares 169,826 Value ($000) $10,322 Avg Close — Range —
Q2 2015
Shares 162,818 Value ($000) $9,681 Avg Close — Range —
Q1 2015
Shares 166,183 Value ($000) $10,789 Avg Close — Range —
Q4 2014
Shares 164,325 Value ($000) $9,150 Avg Close — Range —
Q3 2014
Shares 166,000 Value ($000) $8,493 Avg Close — Range —
Q2 2014
Shares 152,833 Value ($000) $9,546 Avg Close — Range —
Q1 2014
Shares 155,195 Value ($000) $10,126 Avg Close — Range —
Q4 2013
Shares 152,469 Value ($000) $9,988 Avg Close — Range —
Q3 2013
Shares 143,500 Value ($000) $7,281 Avg Close — Range —
Q2 2013
Shares 134,943 Value ($000) $7,011 Avg Close — Range —