ELECTRO SENSORS INC — Director's Dealing 2006

Apr 27, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ELECTRO SENSORS INC (ELSE)
CIK: 0000351789
Period of Report: 2006-04-25

Reporting Person: ZEFF DANIEL (10% Owner)
Reporting Person: Zeff Holding Company, LLC (10% Owner)
Reporting Person: Zeff Capital Partners I, L.P. (10% Owner)
Reporting Person: Spectrum Galaxy Fund Ltd. (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-04-25	Common Stock	P	106	$6.61	Disposed	189780	Indirect
2006-04-25	Common Stock	P	106	$6.70	Disposed	189674	Indirect
2006-04-25	Common Stock	P	427	$6.74	Disposed	189247	Indirect
2006-04-25	Common Stock	P	16941	$6.75	Disposed	172306	Indirect
2006-04-25	Common Stock	P	1068	$6.76	Disposed	171238	Indirect
2006-04-25	Common Stock	P	14815	$6.80	Disposed	156423	Indirect
2006-04-25	Common Stock	P	1068	$6.81	Disposed	155355	Indirect
2006-04-25	Common Stock	P	1441	$6.85	Disposed	153914	Indirect
2006-04-25	Common Stock	P	3554	$6.90	Disposed	150360	Indirect
2006-04-25	Common Stock	P	53	$6.91	Disposed	150307	Indirect
2006-04-25	Common Stock	P	1602	$6.95	Disposed	148705	Indirect
2006-04-25	Common Stock	P	267	$6.96	Disposed	148438	Indirect

Footnotes

F1: This Form 4 is being filed by Daniel Zeff, Spectrum Galaxy Fund Ltd. ("Spectrum"), Zeff Capital Partners I, L.P. ("Capital")
and Zeff Holding Company, LLC ("Holding").

F2: This transaction was effected through Spectrum. Mr. Zeff provides discretionary investment management services to Zeff
Capital Offshore Fund, a class of shares of Spectrum, a company incorporated in the British Virgin Islands. In accordance
with Instruction 4(b)(iv) of Form 4, the entire amount of the Issuer's securities held by Spectrum is reported herein. Mr.
Zeff disclaims, for purposes of Section 16 of the Securities Exchange Act of 1934, beneficial ownership of such securities,
except to the extent of his indirect pecuniary interest therein, and this report shall not be deemed an admission that Mr.
Zeff is the beneficial owner of such securities for purposes of Section 16 or for any other purposes. Each of Holding and
Capital disclaims beneficial ownership over all shares held by Spectrum.