NORTH AMERN ENERGY PARTNERS

CUSIP: 656844107 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q3 2013
Shares 256,800 Value ($000) $1,400 Avg Close — Range —
Q2 2013
Shares 256,800 Value ($000) $1,086 Avg Close — Range —