X0407 4 2023-03-20 0 0000935494 NATIONAL INSTRUMENTS CORP NATI 0001574827 Starkloff Eric Howard C/O NATIONAL INSTRUMENTS CORPORATION 11500 NORTH MOPAC EXPRESSWAY AUSTIN TX 78759 1 1 0 0 President & CEO 0 Common Stock 2023-03-20 4 A 0 90000 0.00 A 407780 D Represents restricted stock units granted on March 20, 2023, which will vest in three equal installments on each of the first three anniversaries of the vesting commencement date of May 1, 2023. /s/ Deborah Donahue as attorney-in-fact for Eric H. Starkloff 2023-03-22