LITTELFUSE INC /DE — Director's Dealing 2017

May 1, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LITTELFUSE INC /DE (LFUS)
CIK: 0000889331
Period of Report: 2017-04-28

Reporting Person: FU CARY T (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-04-28	Common Stock	A	505	—	Acquired	3644	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-04-28	Stock Option (right to buy)	$154.15	A	945	Acquired	2024-04-28	Common Stock (945)	Direct

Footnotes

F1: Represents the grant of restricted stock units to the reporting person under the Amended and Restated Littelfuse Long-Term Incentive Plan. The grant vests 33% annually on the first three anniversaries of the grant date.

F2: The option vests in increments of one third annually beginning on the first anniversary of the date of grant.