SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* HOPKINS DAVID (Last) (First) (Middle) 901 MARQUETTE AVENUE SUITE 3200 (Street) MINNEAPOLIS MN 55402 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol FAIR ISAAC CORP [ FIC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 08/15/2005
	4. 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 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	08/15/2005		M		4,650	A	$13.8889	12,150	D
Common Stock	08/15/2005		M		8,375	A	$17.7778	20,525	D
Common Stock	08/15/2005		S		13,025	D	$39.44	7,500	D
Common Stock	08/17/2005		M		2,100	A	$13.8889	9,600	D

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 Securities Underlying Derivative Security (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: 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
Non-Qualified Stock Options (right to buy)	$13.8889	08/15/2005		M			4,650	02/01/2001(1)	02/01/2010	Common Stock	4,650	$0.00	2,100	D
Non-Qualified Stock Options (right to buy)	$17.7778	08/15/2005		M			8,375	02/06/2001	02/06/2011	Common Stock	8,375	$0.00	11,875	D
Non-Qualified Stock Options (right to buy)	$13.8889	08/17/2005		M			2,100	02/01/2001(1)	02/01/2010	Common Stock	2,100	$0.00	0	D

Explanation of Responses:

1. This option vests in five equal annual installments commencing on this date.

Remarks:

	/s/ Nancy E. Fraser, Attorney-in-fact	08/17/2005
	** 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 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

 POWER OF ATTORNEY

KNOWN ALL BY THESE PRESENTS, the undersigned hereby
constitutes and appoints ANDREA M. FIKE, NANCY E. FRASER, and CHARLES M.
OSBORNE, the undersigned's true and lawful attorney-in-fact to:

1.
execute for an on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of Fair Isaac Corporation (the "Company"),
Forms 3, 4 and 5, including Form ID application and verification, in
accordance with Section 16(a) of the Securities and Exchange Act of 1934,
as amended, and the rules and regulations thereunder;

2. do and
perform any and all acts for and on behalf of the undersigned which may be
necessary or desirable to complete and execute any such Form ID, Form 3, 4
or 5 and timely file such form with the United States Securities and
Exchange Commission and any stock exchange or similar authority; and


3. take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit
to, in the best interest of, or legally required by, the undersigned, it
being understood that the documents executed by such attorney-in-fact on
behalf of the undersigned pursuant to this Power of Attorney shall be in
such form and shall contain such terms and conditions as such
attorney-in-fact may approve in such attorney-in-fact's discretion.


The undersigned hereby grants to such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever
requisite, necessary or proper to be done in the exercise of any of the
rights and opwers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full opwer of
subsitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact or attorney-in fact's substitute or substitutes, shall
lawfuly do or cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorney-in-fact, in serving in such capacity at the request of
the undersigned, is not assuming,  nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
and Exchange Act of 1934.

	This Power of Attorney shall remain in full
force and effect until the undersigned is no longer required to file Form
3, 4, and 5 with respect to the undersigned's holding of an transactions in
securities issued by the Company, unless earlier revoked by the undersigned
in a signed writing delivered to the foregoing attorney-in-fact.

	IN
WITNESS WHEREOF, the undersigned has caused the Power of Attorney to be
executed as of this 28th day of March 2005.



/s/ David S.
P. Hopkins