NATIONAL INSTRS CORP

CUSIP: 636518102 Class: Common Stock

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q2 2020
Shares 45,620 Value ($000) $1,766 Avg Close — Range —
Q1 2020
Shares 47,570 Value ($000) $1,574 Avg Close — Range —