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	426	$6.18	Disposed	222668	Indirect
2006-04-25	Common Stock	P	641	$6.19	Disposed	222027	Indirect
2006-04-25	Common Stock	P	3223	$6.20	Disposed	218804	Indirect
2006-04-25	Common Stock	P	781	$6.21	Disposed	218023	Indirect
2006-04-25	Common Stock	P	53	$6.24	Disposed	217970	Indirect
2006-04-25	Common Stock	P	586	$6.25	Disposed	217384	Indirect
2006-04-25	Common Stock	P	1120	$6.26	Disposed	216264	Indirect
2006-04-25	Common Stock	P	106	$6.27	Disposed	216158	Indirect
2006-04-25	Common Stock	P	5367	$6.28	Disposed	210791	Indirect
2006-04-25	Common Stock	P	2178	$6.30	Disposed	208613	Indirect
2006-04-25	Common Stock	P	106	$6.31	Disposed	208507	Indirect
2006-04-25	Common Stock	P	374	$6.34	Disposed	208133	Indirect
2006-04-25	Common Stock	P	5659	$6.35	Disposed	202474	Indirect
2006-04-25	Common Stock	P	640	$6.36	Disposed	201834	Indirect
2006-04-25	Common Stock	P	53	$6.38	Disposed	201781	Indirect
2006-04-25	Common Stock	P	2878	$6.40	Disposed	198903	Indirect
2006-04-25	Common Stock	P	373	$6.43	Disposed	198530	Indirect
2006-04-25	Common Stock	P	640	$6.45	Disposed	197890	Indirect
2006-04-25	Common Stock	P	481	$6.46	Disposed	197409	Indirect
2006-04-25	Common Stock	P	1734	$6.50	Disposed	195675	Indirect
2006-04-25	Common Stock	P	2081	$6.51	Disposed	193594	Indirect
2006-04-25	Common Stock	P	534	$6.52	Disposed	193060	Indirect
2006-04-25	Common Stock	P	855	$6.55	Disposed	192205	Indirect
2006-04-25	Common Stock	P	320	$6.56	Disposed	191885	Indirect
2006-04-25	Common Stock	P	53	$6.58	Disposed	191832	Indirect
2006-04-25	Common Stock	P	53	$6.59	Disposed	191779	Indirect
2006-04-25	Common Stock	P	1893	$6.60	Disposed	189886	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.