NATUS MEDICAL INC DEL

CUSIP: 639050103 Class: COM

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q2 2014
Shares 18,257 Value ($000) $459 Avg Close — Range —
Q1 2014
Shares 18,940 Value ($000) $488,652 Avg Close — Range —
Q4 2013
Shares 20,220 Value ($000) $454,950 Avg Close — Range —
Q3 2013
Shares 42,340 Value ($000) $600,381 Avg Close — Range —
Q2 2013
Shares 43,900 Value ($000) $599,235 Avg Close — Range —