NORTHROP GRUMMAN CORP

Ticker: NOC CUSIP: 666807102 Class: COM

PZENA INVESTMENT MANAGEMENT LLC's Holding History (CIK: 0001027796)

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

Q1 2014

Shares 19,184 Value ($000) $2,367 Avg Close $97.12 Range $89.29 - $103.07

Q4 2013

Shares 19,216 Value ($000) $2,202 Avg Close $87.28 Range $75.26 - $95.04

Q3 2013

Shares 890,221 Value ($000) $84,802 Avg Close $74.87 Range $66.06 - $80.62

Q2 2013

Shares 3,863,605 Value ($000) $319,906 Avg Close $62.64 Range $55.45 - $68.16

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	19,184	$2,367	$97.12	$89.29 - $103.07
Q4 2013	19,216	$2,202	$87.28	$75.26 - $95.04
Q3 2013	890,221	$84,802	$74.87	$66.06 - $80.62
Q2 2013	3,863,605	$319,906	$62.64	$55.45 - $68.16