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	374	$6.18	Disposed	179734	Indirect
2006-04-25	Common Stock	P	559	$6.19	Disposed	179175	Indirect
2006-04-25	Common Stock	P	2777	$6.20	Disposed	176398	Indirect
2006-04-25	Common Stock	P	683	$6.21	Disposed	175715	Indirect
2006-04-25	Common Stock	P	47	$6.24	Disposed	175668	Indirect
2006-04-25	Common Stock	P	514	$6.25	Disposed	175154	Indirect
2006-04-25	Common Stock	P	980	$6.26	Disposed	174174	Indirect
2006-04-25	Common Stock	P	94	$6.27	Disposed	174080	Indirect
2006-04-25	Common Stock	P	4733	$6.28	Disposed	169347	Indirect
2006-04-25	Common Stock	P	1903	$6.30	Disposed	167444	Indirect
2006-04-25	Common Stock	P	94	$6.31	Disposed	167350	Indirect
2006-04-25	Common Stock	P	326	$6.34	Disposed	167024	Indirect
2006-04-25	Common Stock	P	4941	$6.35	Disposed	162083	Indirect
2006-04-25	Common Stock	P	560	$6.36	Disposed	161523	Indirect
2006-04-25	Common Stock	P	47	$6.38	Disposed	161476	Indirect
2006-04-25	Common Stock	P	2522	$6.40	Disposed	158954	Indirect
2006-04-25	Common Stock	P	327	$6.43	Disposed	158627	Indirect
2006-04-25	Common Stock	P	560	$6.45	Disposed	158067	Indirect
2006-04-25	Common Stock	P	419	$6.46	Disposed	157648	Indirect
2006-04-25	Common Stock	P	1516	$6.50	Disposed	156132	Indirect
2006-04-25	Common Stock	P	1818	$6.51	Disposed	154314	Indirect
2006-04-25	Common Stock	P	466	$6.52	Disposed	153848	Indirect
2006-04-25	Common Stock	P	745	$6.55	Disposed	153103	Indirect
2006-04-25	Common Stock	P	280	$6.56	Disposed	152823	Indirect
2006-04-25	Common Stock	P	47	$6.58	Disposed	152776	Indirect
2006-04-25	Common Stock	P	47	$6.59	Disposed	152729	Indirect
2006-04-25	Common Stock	P	1657	$6.60	Disposed	151072	Indirect
2006-04-25	Common Stock	P	94	$6.61	Disposed	150978	Indirect
2006-04-25	Common Stock	P	94	$6.70	Disposed	150884	Indirect
2006-04-25	Common Stock	P	373	$6.74	Disposed	150511	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 Capital. Mr. Zeff is the sole manager and member of Holding, which in turn serves as
the general partner for Capital. In accordance with Instruction 4(b)(iv) of Form 4, the entire amount of the Issuer's
securities held by Capital is reported herein. Each of Mr. Zeff and Holding disclaims, for purposes of Section 16 of the
Securities Exchange Act of 1934, beneficial ownership of such securities, except to the extent of its/his indirect pecuniary
interest therein, and this report shall not be deemed an admission that any of Mr. Zeff or Holding is the beneficial owner
of such securities for purposes of Section 16 or for any other purposes. Spectrum disclaims beneficial ownership over all
shares held through Capital.