SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* KATZ STEPHEN (Last) (First) (Middle) 2815 2ND AVENUE SUITE 100 (Street) SEATTLE WA 98121 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol CELLULAR TECHNICAL SERVICES CO INC [ CTSC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner X Officer (give title below) Other (specify below) Chief Executive Officer
	3. Date of Earliest Transaction (Month/Day/Year) 06/10/2004
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/10/2004		A		9,250	A	$0(1)	230,180	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Options to Purchase Common Stock	$0.73	06/10/2004		A		15,000		06/10/2005	06/10/2014	Common Stock	15,000	$0	15,000	D
Options to Purchase Common Stock	$0.99							(2)	09/23/2012	Common Stock	10,000		10,000	D
Options to Purchase Common Stock	$2.745							(3)	09/10/2011	Common Stock	15,000		15,000	D
Options to Purchase Common Stock	$8							(4)	06/21/2010	Common Stock	65,000		65,000	D
Options to Purchase Common Stock	$11.344							(5)	03/22/2010	Common Stock	5,000		5,000	D
Options to Purchase Common Stock	$3.281							(6)	06/14/2009	Common Stock	3,400		3,400	D

Explanation of Responses:

1. These shares of common stock were granted to the reporting person pursuant to a restricted stock purchase plan.

2. Exercisable in four equal annual installments beginning September 23, 2003.

3. Exercisable in four equal annual installments beginning September 10, 2002.

4. Exercisable in five equal annual installments beginning June 21, 2001.

5. Exercisable in five equal annual installments beginning March 22, 2001.

6. Exercisable in five equal annual installments beginning June 14, 2000.

	/s/ Bruce R. York as Attorney in Fact	06/15/2004
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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