LITTELFUSE INC /DE — Director's Dealing 2018

May 1, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LITTELFUSE INC /DE (LFUS)
CIK: 0000889331
Period of Report: 2018-04-27

Reporting Person: Nayar Deepak (SVP & GM Electronics)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-04-27	Common Stock	A	1616	—	Acquired	5208	Direct
2018-04-28	Common Stock	F	210	$192.59	Disposed	4998	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-04-27	Stock Option (right to buy)	$192.59	A	5525	Acquired	2025-04-27	Common Stock (5525)	Direct

Footnotes

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

F2: Closing price per share on date of vesting of restricted stock units.

F3: The option vests in increments of one third annually beginning on the first anniversary of the date of grant.