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 *
MP Thrift Investments L.P.
  2. Issuer Name and Ticker or Trading Symbol
FLAGSTAR BANCORP INC [FBC]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
CORPORATION SERVICE COMPANY, 2711 CENTERVILLE ROAD, SUITE 400
3. Date of Earliest Transaction (Month/Day/Year)
02/17/2009
(Street)

WILMINGTON, DE 19808
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

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
Convertible Participating Voting Preferred Stock Series B (1) 02/17/2009   P   25,000     (2)   (3) Common Stock 31,250,000 (1) $ 1,000 275,000 D (4) (5) (6) (7) (8)  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MP Thrift Investments L.P.
CORPORATION SERVICE COMPANY
2711 CENTERVILLE ROAD, SUITE 400
WILMINGTON, DE 19808
    X    

Signatures

 /s/ Robert H. Weiss, General Counsel   02/18/2009
**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 share of Convertible Participating Voting Preferred Stock Series B is convertible into such number of shares of Common Stock equal to the $1,000 divided by the applicable conversion price, plus cash in lieu of fractional shares. Assuming that there are no anti-dilution adjustments to the conversion price of the Convertible Participating Voting Preferred Stock Series B, applicable conversion price for each share of Convertible Participating Voting Preferred Stock Series B is $0.80 per share.
(2) The Convertible Participating Voting Preferred Stock Series B of Flagstar Bancorp, Inc. (the "Issuer") is not convertible until the receipt of approval of such conversion by the stockholders of the Issuer (the "Stockholder Approval") necessary to amend the Certificate of Incorporation to increase the number of authorized shares of Common Stock, and upon receipt of the Stockholder Approval, the shares of Convertible Participating Voting Preferred Stock Series B will automatically convert into shares of Common Stock of the Issuer.
(3) The Convertible Participating Voting Preferred Stock Series B has no expiration date.
(4) MP Thrift Investments L.P. ("MP Thrift") is the direct owner of 275,000 shares of Convertible Participating Voting Preferred Stock Series B. MP Thrift is a limited partnership organized under the laws of Delaware formed for the purpose of acquiring the preferred stock of Flagstar Bancorp, Inc. MPGOP III Thrift AV-I L.P. ("MPGOP") is a Delaware limited partnership and MPGOP (Cayman) III Thrift AV-I L.P. ("MPGOP Cayman") is a Cayman Islands exempted limited partnership (together, the "New Fund"), holding 100 percent of the membership interests in MP Thrift. MPGOP has a 77.0497% interest in MP Thrift and MPGOP Cayman has a 22.9503% interest in MP Thrift. MP (Thrift) Global Partners III LLC ("MP LLC") is a limited liability company organized under the laws of Delaware.
(5) The principal business of MP LLC is to serve as general partner of each of MPGOP, MPGOP Cayman, MP Thrift, MP (Thrift) Global Opportunities Partners (Special) III LP ("MPGOPS") and MP (Thrift) Global Opportunities Investments III LP ("MPGOI"). MP (Thrift) Asset Management LLC ("MPAM") is a limited liability company organized under the laws of Delaware. MPAM is the managing member of MP LLC. MP (Thrift) LLC ("MPT") is a limited liability company organized under the laws of Delaware. MPT is the managing member of MPAM. MPGOPS is a limited partnership organized under the laws of Delaware. MPGOPS is the holder of a 100% limited partnership interest in MPGOI. MPGOI is a limited partnership organized under the laws of Delaware. MPGOI is the holder of a 1% limited partnership interest in the New Fund. Along with MPT, MPAM, MP LLC, and MPGOPS, MPGOI comprises the Associates Fund.
(6) David J. Matlin and Mark R. Patterson are each a 50% managing member of MPT. David J. Matlin's principal occupation is acting as Chief Executive Officer of MatlinPatterson Global Advisers LLC ("Matlin Advisers") and Mark R. Patterson's principal occupation is acting as Chairman of Matlin Advisers. Matlin Advisers is a limited liability company organized under the laws of Delaware. The principal business of Matlin Advisers is to serve as investment adviser to the funds. Matlin Advisers also serves as investment adviser to the New Fund. David J. Matlin and Mark R. Patterson are both citizens of the United States of America. David J. Matlin may be deemed to have shared voting and investment control (together with Mark R. Patterson) over the shares of the Issuer held by MP LLC. He also has an indirect pecuniary interest in the New Fund. David J. Matlin disclaims beneficial ownership of any of the reported securities except to the extent of his pecuniary interest therein.
(7) Similarly, Mark R. Patterson may be deemed to have shared voting and investment control (together with David J. Matlin) over the shares of the Issuer held by MP LLC. He also has an indirect pecuniary interest in the New Fund. Mark R. Patterson disclaims beneficial ownership of any of the reported securities except to the extent of his pecuniary interest therein. Gregory Eng is appointed as a new director of the Issuer. Although Gregory Eng does not have voting or investment control over shares held by MP LLC, Mr. Eng may be deemed to have an indirect pecuniary interest in such shares through his indirect interest in a limited partnership which holds an investment interest and carried interest in the Funds. His exact pecuniary interest therein is not readily determinable because it is subject to several variables, including without limitation, the internal rates of return of the Funds overall and with respect to their indirect investment in the Issuer.
(8) Gregory Eng disclaims beneficial ownership of any of the reported securities except to the extent of his pecuniary interest therein.

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