NATUS MEDICAL INC DEL

CUSIP: 639050103 Class: COM

O'SHAUGHNESSY ASSET MANAGEMENT, LLC's Holding History (CIK: 0001423442)

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

Q1 2015
Shares 34,730 Value ($000) $1,370 Avg Close — Range —
Q4 2014
Shares 24,174 Value ($000) $867 Avg Close — Range —