NATIONAL INSTRS CORP

CUSIP: 636518102 Class: Common Stock

Artisan Partners Limited Partnership's Holding History (CIK: 0001466153)

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

Q1 2017
Shares 500,576 Value ($000) $16,299 Avg Close — Range —
Q4 2016
Shares 382,651 Value ($000) $11,793 Avg Close — Range —
Q3 2016
Shares 419,568 Value ($000) $11,916 Avg Close — Range —
Q2 2016
Shares 425,106 Value ($000) $11,648 Avg Close — Range —
Q1 2016
Shares 441,359 Value ($000) $13,289 Avg Close — Range —
Q4 2015
Shares 449,199 Value ($000) $12,888 Avg Close — Range —
Q3 2015
Shares 462,192 Value ($000) $12,844 Avg Close — Range —
Q2 2015
Shares 451,309 Value ($000) $13,296 Avg Close — Range —
Q1 2015
Shares 420,678 Value ($000) $13,479 Avg Close — Range —
Q4 2014
Shares 2,758,509 Value ($000) $85,762 Avg Close — Range —
Q3 2014
Shares 2,606,958 Value ($000) $80,633 Avg Close — Range —
Q2 2014
Shares 934,073 Value ($000) $30,255 Avg Close — Range —