NATIONAL INSTRS CORP

CUSIP: 636518102 Class: Common Stock

Praesidium Investment Management Company, LLC's Holding History (CIK: 0001320769)

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

Q3 2019
Shares 1,167,999 Value ($000) $49,044 Avg Close — Range —
Q2 2019
Shares 1,153,158 Value ($000) $48,421 Avg Close — Range —
Q1 2019
Shares 1,165,678 Value ($000) $51,709 Avg Close — Range —
Q4 2018
Shares 1,144,585 Value ($000) $51,941 Avg Close — Range —
Q3 2018
Shares 1,134,628 Value ($000) $54,837 Avg Close — Range —
Q2 2018
Shares 1,045,442 Value ($000) $43,888 Avg Close — Range —
Q1 2018
Shares 1,037,857 Value ($000) $52,484 Avg Close — Range —
Q4 2017
Shares 995,135 Value ($000) $41,428 Avg Close — Range —
Q3 2017
Shares 978,929 Value ($000) $41,281 Avg Close — Range —
Q2 2017
Shares 833,052 Value ($000) $33,505 Avg Close — Range —