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 * Wells Stuart   2. Issuer Name and Ticker or Trading Symbol FAIR ISAAC CORP [FICO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Executive Vice President (Last) (First) (Middle) 181 METRO DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 12/13/2013 (Street) SAN JOSE, CA 95110 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 12/13/2013   M   6,000 A (1) 6,000 D   Common Stock 12/13/2013   M   4,000 A (1) 10,000 D   Common Stock 12/13/2013   M   2,500 A (2) 12,500 D   Common Stock 12/13/2013   F   5,217 (3) D $ 57 7,283 D   Common Stock 12/13/2013   F   1,304 (4) D $ 57 5,979 D   Common Stock 12/13/2013   M   7,500 A $ 41.89 13,479 D   Common Stock 12/13/2013   M   31,251 A $ 43.05 44,730 D   Common Stock 12/13/2013   S   38,751 D $ 57.1909 (5) 5,979 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

Performance Share Units

(1)

12/13/2013

M

6,000

12/13/2012(6)

(7)

Common Stock

6,000

$ 0

12,000

D

Performance Share Units

(1)

12/13/2013

M

4,000

12/13/2013(6)

(7)

Common Stock

4,000

$ 0

12,000

D

Restricted Stock Units

(2)

12/13/2013

M

2,500

12/13/2013(8)

(7)

Common Stock

2,500

$ 0

7,500

D

Restricted Stock Units

(2)

12/13/2013

A

9,747

12/13/2014(8)

(7)

Common Stock

9,747

$ 0

9,747

D

Non-Qualified Stock Option (right to buy)

$ 41.89

12/13/2013

M

7,500

12/13/2013(9)

12/12/2019

Common Stock

7,500

$ 0

22,500

D

Non-Qualified Stock Option (right to buy)

$ 43.05

12/13/2013

M

31,251

04/25/2013(9)

04/24/2019

Common Stock

31,251

$ 0

93,751

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Wells Stuart 181 METRO DRIVE SAN JOSE, CA 95110			Executive Vice President

Signatures

/s/Nancy E. Fraser, Attorney-in-fact		12/16/2013
**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)	Each earned performance share unit represents a right to receive one share of Fair Isaac common stock contingent upon continued employment.
(2)	Each restricted stock unit represents a right to receive one share of Fair Isaac common stock contingent upon continued employment.
(3)	Shares withheld by Company for payment of taxes due at vesting from earned performance share units.
(4)	Shares withheld by Company for payment of taxes due at vesting from restricted stock units.
(5)	This transaction was executed in multiple trades at prices ranging from $57.00 to $57.64. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.
(6)	The performance share units vest in four equal annual installments commencing on this date and one share will be delivered to the reporting person for each vested unit as soon as practicable thereafter.
(7)	No expiration date.
(8)	The restricted stock units vest in four equal annual installments commencing on this date and vested shares will be delivered to the reporting person as soon as practicable thereafter.
(9)	This option vests in four equal annual installments commencing on this date.

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