NATIONAL PRESTO INDS INC

Ticker: NPK CUSIP: 637215104 Class: COM

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

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

Q1 2014

Shares 21,517 Value ($000) $1,679 Avg Close $78.13 Range $73.04 - $84.00

Q4 2013

Shares 24,117 Value ($000) $1,941 Avg Close $73.58 Range $67.32 - $81.00

Q3 2013

Shares 24,117 Value ($000) $1,698 Avg Close $72.80 Range $68.50 - $77.50

Q2 2013

Shares 24,117 Value ($000) $1,737 Avg Close $76.01 Range $70.25 - $80.50

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	21,517	$1,679	$78.13	$73.04 - $84.00
Q4 2013	24,117	$1,941	$73.58	$67.32 - $81.00
Q3 2013	24,117	$1,698	$72.80	$68.50 - $77.50
Q2 2013	24,117	$1,737	$76.01	$70.25 - $80.50