ELECTRO SENSORS INC — Director's Dealing 2006

May 18, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ELECTRO SENSORS INC (ELSE)
CIK: 0000351789
Period of Report: 2006-05-05

Reporting Person: SLYE BRADLEY D (Director, Chairman, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-05-05	Common Stock	M	18000	$1.5625	Acquired	110852	Direct
2006-05-16	Common Stock	S	32307	$6.2815	Disposed	78545	Direct
2006-05-16	Common Stock	S	25000	$6.6232	Disposed	53545	Direct
2006-05-16	Common Stock	S	7693	$6.4243	Disposed	45852	Direct
2006-05-17	Common Stock	S	35000	$5.7995	Disposed	10852	Direct
2006-05-17	Common Stock	S	300	$5.80	Disposed	605	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-05-05	Employee Stock Option (Right to Buy)	$1.5625	M	18000	Disposed	2009-08-02	Common Stock (30000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5190	Indirect
Common Stock	18329	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Option (Right to Buy)	$2.17	2007-01-03	Common Stock (75000)	15000	Direct

Footnotes

F1: Exercisable in annual increments of 15,000 shares each commencing 1/3/97.

F2: Exercisable in annual increments of 6,000 shares each commencing 8/3/99.

F3: Includes 939 shares acquired pursuant to the Employee Stock Purchase Plan through January 6, 2006.

F4: Includes 700 shares acquired pursuant to gifting transactions reported on Form 5 dated May 2006.

F5: Updated total through 2/21/06.