Roiko John Charles 4

4 · NATIONAL INSTRUMENTS CORP · Filed May 2, 2019

Form 4

Period: 2019-02-01

Vice President, Finance

Transactions

Exercise/Conversion
Common Stock
2019-05-01+3,595→ 23,873 total
Tax Payment
Common Stock
2019-05-01$43.47/sh−1,143$49,688→ 22,730 total
Exercise/Conversion
Restricted Stock Units
2019-05-01−681→ 1,471 total
Exp: 2027-05-01→ Common Stock (681 underlying)
Exercise/Conversion
Restricted Stock Units
2019-05-01−1,000→ 2,000 total
Exp: 2032-05-01→ Common Stock (1,000 underlying)
Exercise/Conversion
Common Stock
2019-05-01$37.59/sh+174$6,540→ 20,278 total
Exercise/Conversion
Restricted Stock Units
2019-05-01−507→ 2,608 total
Exp: 2031-05-01→ Common Stock (507 underlying)
Exercise/Conversion
Common Stock
2019-02-01$37.59/sh+168$6,315→ 20,104 total
Exercise/Conversion
Restricted Stock Units
2019-05-01−681→ 647 total
Exp: 2026-05-01→ Common Stock (681 underlying)
Exercise/Conversion
Restricted Stock Units
2019-05-01−272→ 867 total
Exp: 2028-05-01→ Common Stock (272 underlying)
Exercise/Conversion
Restricted Stock Units
2019-05-01−454→ 2,303 total
Exp: 2030-05-01→ Common Stock (454 underlying)

Footnotes (4)

[F1]Acquisition of stock under Issuer's employee stock purchase plan.
[F2]Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
[F3]The restricted stock units vest and become exercisable based on time and performance milestones set by the Issuer.
[F4]The restricted stock units vest in four equal annual installments on the anniversary of the vesting commencement date of May 1, 2017.

Documents

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