SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* CALAMOS JOHN P SR (Last) (First) (Middle) C/O CALAMOS ASSET MANAGEMENT, INC. 1111 E. WARRENVILLE ROAD (Street) NAPERVILLE IL 60563 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 10/27/2004	3. Issuer Name and Ticker or Trading Symbol Calamos Asset Management, Inc. /DE/ [ CLMS ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner X Officer (give title below) Other (specify below) Chairman, CEO, Co-CIO	5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class B Common Stock(1)	100	I	Calamos Family Partners, Inc.(2)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Calamos Holdings LLC Membership Units	10/26/2004	(3)	Class A Common Stock	96,800,000	$0	I	Calamos Family Partners, Inc.(2)
Calamos Holdings LLC Membership Units	10/26/2004	(3)	Class A Common Stock	200,000	$0	D

Explanation of Responses:

1. The Issuer's Class B Common Stock is convertible on demand into an equal number of shares of the Issuer's Class A Common Stock. Pursuant to the Amended and Restated Certificate of Incorporation of the Issuer, each share of Class B Common Stock held by Calamos Family Partners, Inc. ("CFP") entitles it to a number of votes equal to ten (10) multiplied by the sum of (x) the aggregate number of shares of Class B Common Stock held by CFP and (y) the aggregate number of Membership Units of Calamos Holdings LLC, or any successor entity thereto, held by CFP, divided by (z) the number of shares of Class B Common Stock held by CFP.

2. The reporting persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein and this report shall not be deemed an admission that the reporting persons are the beneficial owners of such securities for the purposes of Section 16 or for any other purpose.

3. Pursuant to the terms of the Issuer's Amended and Restated Certificate of Incorporation, Membership Units of Calamos Holdings LLC are exchangeable on demand for an equal number of shares of the Issuer's Class A Common Stock. The Membership Units do not expire.

	/s/ James S. Hamman, Jr., Attorney-in-fact	10/27/2004
	** 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 5 (b)(v).
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