X0306 4 2015-04-16 0 0001299033 Calamos Asset Management, Inc. /DE/ CLMS 0001248580 CALAMOS JOHN P SR 2020 CALAMOS COURT NAPERVILLE IL 60563 1 1 0 0 Chairman, CEO, Global Co-CIO 0001307316 Calamos Family Partners, Inc. 2020 CALAMOS COURT NAPERVILLE IL 60563 0 0 1 0 Class A Common Stock 2015-04-16 4 P 0 1000 12.5 A 3771987.778 I By Calamos Investments LLC Class A Common Stock 7283.303 I By Spouse THE SHARE PURCHASES IN THIS FORM 4 ARE NOT DIRECTLY FOR THE INDIVIDUAL, PERSONAL ACCOUNTS OF JOHN P. CALAMOS, SR. THESE TRANSACTIONS REFLECT THE PURCHASE OF CALAMOS ASSET MANAGEMENT, INC. (CAM) SHARES BY CALAMOS INVESTMENTS LLC (CILLC) PRIMARILY TO MANAGE DILUTION RESULTING FROM AND POTENTIALLY TO FULFILL THE REQUIREMENTS OF CAM'S EQUITY COMPENSATION PLAN. JOHN P. CALAMOS, SR. OWNS A CONTROLLING INTEREST IN CALAMOS FAMILY PARTNERS, INC., WHICH IN TURN OWNS 77.8% OF CILLC. AS A RESULT, JOHN P. CALAMOS, SR. AND CALAMOS FAMILY PARTNERS, INC. ARE REQUIRED TO FILE THIS FORM 4 RELATING TO TRANSACTIONS OF THE CORPORATE REPURCHASE PROGRAM OCCURRING THROUGH CILLC. Total represents 3,090,389.7780 shares of Class A Common Stock and 681,598 Restricted Stock Units (which will be settled solely in shares of Class A Common Stock). /s/ William J. Takahashi, Attorney-in-Fact 2015-04-16