Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Zuckerman David
   2. Issuer Name and Ticker or Trading Symbol
CHORDIANT SOFTWARE INC [CHRD] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP, GC and Secretary
(Last)
(First)
(Middle)
20400 STEVENS CREEK BLVD., SUITE 400		 3. Date of Earliest Transaction (Month/Day/Year)
04/21/2010
(Street)

CUPERTINO, CA 95014		 4. If Amendment, Date 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
(City)
(State)
(Zip)
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 04/21/2010   U   16,666 D $ 5 0 D  
Common Stock 04/21/2010   M   33,334 A $ 0 33,334 D  
Common Stock 04/21/2010   M   16,000 A $ 0 49,334 D  
Common Stock 04/21/2010   D   49,334 D (1) 0 D  

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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 Underlying Securities
(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 of Derivative Security: 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
Restricted Stock Units (2) 04/21/2010   M     16,000 (4) 04/21/2010 04/21/2010 Common Stock 16,000 (3) (2) 0 D  
Restricted Stock Units (2) 04/21/2010   M     33,334 (5) 04/21/2010 04/21/2010 Common Stock 33,334 (3) (2) 0 D  
Stock Option (right to buy) $ 2.87 04/21/2010   D     33,000 (6)   (6) 11/23/2016 Common Stock 33,000 (6) 0 D  
Stock Option (right to buy) $ 2.32 04/21/2010   D     75,000 (7)   (7) 11/24/2012 Common Stock 75,000 (7) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Zuckerman David
20400 STEVENS CREEK BLVD.
SUITE 400
CUPERTINO, CA 95014		       VP, GC and Secretary  

Signatures

 /s/ David Zuckerman   04/29/2010
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Disposed of pursuant to the terms of the Agreement and Plan of Merger dated March 14, 2010 by and among Pegasystems Inc., Maple Leaf Acquisition Corp. and Chordiant Software, Inc. (the "Merger Agreement") in exchange for the right to receive an amount in cash equal to $5.00 per share on the effective date of the merger.
(2) Each restricted stock unit represents a contingent right to receive one share of CHRD common stock.
(3) Reflects conversion of RSU into Common Stock
(4) Reflects shares that vested on 4/21/2010 under RSU grant from 11/24/2009
(5) Reflects shares that vested on 4/21/2010 under RSU grant from 11/25/2008
(6) This option, which provided for vesting in equal monthly installments over four years beginning 11/24/2009, was assumed by Pegasystems Inc. pursuant to the Merger Agreement and replaced with an option to purchase 4,316 shares of Pegasystems Inc. common stock for $21.943 per share.
(7) This option, which provided for vesting in equal monthly installments over three years after a one year cliff beginning 08/11/2008, was assumed by Pegasystems Inc. pursuant to the Merger Agreement and replaced with an option to purchase 9,809 shares of Pegasystems Inc. common stock for $17.738 per share.

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