LITTELFUSE INC /DE - Director's Dealing 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: MUCHONEY MARY S (Corporate Secretary)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-04-27	Common Stock	A	470	—	Acquired	5896	Direct
2012-04-29	Common Stock	F	48	$63.09	Disposed	5848	Direct
2012-04-30	Common Stock	F	73	$62.67	Disposed	5775	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-04-27	Stock Option (Right to Buy)	$63.09	A	1600	Acquired	2019-04-27	Common Stock (1600)	Direct

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$27.10	2016-04-27	Common Stock (1200)	1200	Direct
Stock Option (Right to Buy)	$25.20	2017-04-26	Common Stock (3000)	3000	Direct
Stock Option (Right to Buy)	$38.11	2014-04-30	Common Stock (3000)	3000	Direct
Stock Option (Right to Buy)	$27.21	2015-05-06	Common Stock (1200)	1200	Direct
Stock Option (Right to Buy)	$36.33	2015-04-25	Common Stock (3000)	3000	Direct
Stock Option (Right to Buy)	$13.88	2016-04-24	Common Stock (2280)	2280	Direct
Stock Option (Right to Buy)	$42.13	2017-04-30	Common Stock (1186)	1186	Direct
Stock Option (Right to Buy)	$62.21	2018-04-29	Common Stock (1600)	1600	Direct

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

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