RICHARDSON ELECTRONICS, LTD. - Director's Dealing 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RICHARDSON ELECTRONICS LTD/DE (RELL)
CIK: 0000355948
Period of Report: 2010-12-01

Reporting Person: Diddell Wendy (EVP Corporate Development)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-01	Common Stock	M	6903	$7.24	Acquired	6903	Direct
2010-12-01	Common Stock	S	6903	$10.91	Disposed	0	Direct
2010-12-01	Common Stock	M	250	$5.67	Acquired	250	Direct
2010-12-01	Common Stock	S	250	$10.91	Disposed	0	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-01	Employee Stock Option (Right to Buy)	$7.24	M	6903	Disposed	2017-10-09	Common Stock (6903)	Direct
2010-12-01	Employee Stock Option (Rigth to Buy)	$5.67	M	250	Disposed	2019-10-13	Common Stock (250)	Direct

F1: The exercise and sale reported in the Form 4 were affected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2: Partial exercise of an employee stock option of which 2,500 shares each vested on October 9, 2008, 2009, and 2010.

F3: Partial exercise of an employee option of which 3,000 shares vested on October 13, 2010.