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 * LANSING WILLIAM J   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 _____ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 181 METRO DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 12/08/2015 (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 12/08/2015   M   15,440 A $ 0 153,091 D   Common Stock 12/08/2015   M   7,116 A $ 0 160,207 D   Common Stock 12/08/2015   F   11,769 (1) D $ 91.91 148,438 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Market Share Units

(2)

12/08/2015

A

17,252 (3)

12/13/2015

(4)

Common Stock

17,252

$ 0

17,252

D

Market Share Units

(2)

12/08/2015

A

15,440 (5)

12/08/2015

(4)

Common Stock

15,440

$ 0

15,440

D

Market Share Units

(2)

12/08/2015

M

15,440

12/08/2015

(4)

Common Stock

15,440

$ 0

0

D

Performance Share Units

(6)

12/08/2015

M

7,116

12/08/2015(7)

(4)

Common Stock

7,116

$ 0

14,231

D

Restricted Stock Units

(8)

12/08/2015

A

20,485

12/08/2016(9)

(4)

Common Stock

20,485

$ 0

20,485

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LANSING WILLIAM J 181 METRO DRIVE SAN JOSE, CA 95110			President and CEO

Signatures

/s/Nancy E. Fraser, Attorney-in-fact		12/09/2015
**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)	Shares withheld by Company for payment of taxes due at vesting from earned performance share units and earned market share units.
(2)	Each earned market share unit represents a right to receive one share of Fair Isaac common stock contingent upon continued employment.
(3)	As previously reported in a prior Form 4 footnote, on December 13, 2013, the reporting person was granted a target award of 25,878 market share units. The award vests in three equal annual installments from the grant date based on the Company's satisfaction of certain performance criteria for each of the performance periods ending November 30, 2014, 2015 and 2016. The performance criteria for 2014 were met and reported, resulting in an award of 7,935 market share units which vested on December 13, 2014. The performance criteria for 2015 were met, resulting in the award of 17,252 market share units which will vest on December 13, 2015.
(4)	No expiration date.
(5)	On December 8, 2014, the reporting person was granted a target award of 23,160 market share units. The award is scheduled to vest in three equal annual installments from the grant date based on the Company's satisfaction of certain performance criteria for each of the performance periods ending November 30, 2015, 2016 and 2017. The performance criteria for 2015 were met, resulting in the award of 15,440 market share units which vest immediately.
(6)	Each earned performance share unit represents a right to receive one share of Fair Isaac common stock contingent upon continued employment.
(7)	The performance share units vest in three 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.
(8)	Each restricted stock unit represents a right to receive one share of Fair Isaac common stock contingent upon continued employment.
(9)	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.

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