LITTELFUSE INC /DE — Director's Dealing 2012

May 1, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LITTELFUSE INC /DE (LFUS)
CIK: 0000889331
Period of Report: 2012-04-27

Reporting Person: Quille John T (Vice Presdient & CAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-04-27	Common Stock	A	1154	—	Acquired	5451	Direct
2012-04-29	Common Stock	F	68	$63.09	Disposed	5383	Direct
2012-04-30	Common Stock	F	115	$62.67	Disposed	5268	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$31.01	2015-07-28	Common Stock (750)	750	Direct

Footnotes

F1: Value based on the last business day (April 27) before vesting of Restricted Stock Units.