-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, MHQtLd8UMIh3wJT71HZvXAR50ywuLZzD0llXe2miIn0OtxofNoe81HONhlWVWJRU SmURiLaYVelB3RjDBLwA6A== 0000902664-09-003289.txt : 20090811 0000902664-09-003289.hdr.sgml : 20090811 20090811164714 ACCESSION NUMBER: 0000902664-09-003289 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20090811 DATE AS OF CHANGE: 20090811 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: PennyMac Mortgage Investment Trust CENTRAL INDEX KEY: 0001464423 STANDARD INDUSTRIAL CLASSIFICATION: REAL ESTATE INVESTMENT TRUSTS [6798] IRS NUMBER: 270186273 STATE OF INCORPORATION: MD FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-84954 FILM NUMBER: 091004271 BUSINESS ADDRESS: STREET 1: 27001 AGOURA ROAD STREET 2: THIRD FLOOR CITY: CALABASAS STATE: CA ZIP: 91301 BUSINESS PHONE: (818) 224-7442 MAIL ADDRESS: STREET 1: 27001 AGOURA ROAD STREET 2: THIRD FLOOR CITY: CALABASAS STATE: CA ZIP: 91301 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Highbridge International LLC CENTRAL INDEX KEY: 0001308315 IRS NUMBER: 000000000 STATE OF INCORPORATION: E9 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: THE CAYMAN CORPORATE CENTRE, 4TH FLOOR STREET 2: 27 HOSPITAL ROAD CITY: GRAND CAYMAN STATE: E9 ZIP: 00000 BUSINESS PHONE: 345-945-1400 MAIL ADDRESS: STREET 1: P.O. BOX 30554 STREET 2: SEVEN MILE BEACH CITY: GEORGE TOWN, GRAND CAYMAN STATE: E9 ZIP: 00000 SC 13G 1 p09-1686sc13g.txt PENNYMAC MORTGAGE INVESTMENT TRUST UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 PennyMac Mortgage Investment Trust (Name of Issuer) Common Shares, par value $0.01 per share (Title of Class of Securities) 70931T103 (CUSIP Number) July 30, 2009 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) - ---------------- *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Page 1 of 14 Pages CUSIP No. 70931T103 13G Page 2 of 14 Pages - -------------------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS Highbridge International LLC - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) [X] (b) [ ] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands, British West Indies - -------------------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES ----------------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 792,576 Common Shares OWNED BY ----------------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING ----------------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 792,576 Common Shares - -------------------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 792,576 Common Shares - -------------------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) [ ] - -------------------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.74% - -------------------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON (see instructions) OO - -------------------------------------------------------------------------------- CUSIP No. 70931T103 13G Page 3 of 14 Pages - -------------------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS Highbridge Long/Short Equity Fund, L.P. - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) [X] (b) [ ] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION State of Delaware - -------------------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES ----------------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 127,149 Common Shares OWNED BY ----------------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING ----------------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 127,149 Common Shares - -------------------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 127,149 Common Shares - -------------------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) [ ] - -------------------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.76% - -------------------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON (see instructions) PN - -------------------------------------------------------------------------------- CUSIP No. 70931T103 13G Page 4 of 14 Pages - -------------------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS Highbridge Long/Short Equity Fund, Ltd. - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) [X] (b) [ ] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands, British West Indies - -------------------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES ----------------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 258,057 Common Shares OWNED BY ----------------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING ----------------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 258,057 Common Shares - -------------------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 258,057 Common Shares - -------------------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) [ ] - -------------------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.54% - -------------------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON (see instructions) OO - -------------------------------------------------------------------------------- CUSIP No. 70931T103 13G Page 5 of 14 Pages - -------------------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS Highbridge Long/Short Institutional Fund, Ltd. - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) [X] (b) [ ] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands, British West Indies - -------------------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES ----------------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 70,877 Common Shares OWNED BY ----------------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING ----------------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 70,877 Common Shares - -------------------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 70,877 Common Shares - -------------------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) [ ] - -------------------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.42 - -------------------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON (see instructions) OO - -------------------------------------------------------------------------------- CUSIP No. 70931T103 13G Page 6 of 14 Pages - -------------------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS Triton 245 Ltd. - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) [X] (b) [ ] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands, British West Indies - -------------------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES ----------------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 25,237 Common Shares OWNED BY ----------------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING ----------------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 25,237 Common Shares - -------------------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 25,237 Common Shares - -------------------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) [ ] - -------------------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.15% - -------------------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON (see instructions) OO - -------------------------------------------------------------------------------- CUSIP No. 70931T103 13G Page 7 of 14 Pages - -------------------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS Highbridge Capital Management, LLC - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) [X] (b) [ ] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION State of Delaware - -------------------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES ----------------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 1,273,896 Common Shares OWNED BY ----------------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING ----------------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 1,273,896 Common Shares - -------------------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,273,896 Common Shares - -------------------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) [ ] - -------------------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 7.61% - -------------------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON (see instructions) OO - -------------------------------------------------------------------------------- CUSIP No. 70931T103 13G Page 8 of 14 Pages - -------------------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS Glenn Dubin - -------------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) [X] (b) [ ] - -------------------------------------------------------------------------------- (3) SEC USE ONLY - -------------------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION United States - -------------------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES ----------------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 1,273,896 Common Shares OWNED BY ----------------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING ----------------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 1,273,896 Common Shares - -------------------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,273,896 Common Shares - -------------------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) [ ] - -------------------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 7.61% - -------------------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON (see instructions) IN - -------------------------------------------------------------------------------- CUSIP No. 70931T103 13G Page 9 of 14 Pages Item 1. (a) Name of Issuer PennyMac Mortgage Investment Trust (the "Company") (b) Address of Issuer's Principal Executive Offices 27001 Agoura Road, Third Floor Calabasas, California 91301 Item 2(a). Name of Person Filing Item 2(b). Address of Principal Business Office Item 2(c). Citizenship HIGHBRIDGE INTERNATIONAL LLC c/o Harmonic Fund Services The Cayman Corporate Centre, 4th Floor 27 Hospital Road Grand Cayman, Cayman Islands, British West Indies Citizenship: Cayman Islands, British West Indies HIGHBRIDGE LONG/SHORT EQUITY FUND, L.P. c/o Highbridge Capital Management, LLC 9 West 57th Street, 27th Floor New York, New York 10019 Citizenship: State of Delaware HIGHBRIDGE LONG/SHORT EQUITY FUND, LTD. c/o Harmonic Fund Services The Cayman Corporate Centre, 4th Floor 27 Hospital Road Grand Cayman, Cayman Islands, British West Indies Citizenship: Cayman Islands, British West Indies HIGHBRIDGE LONG/SHORT INSTITUTIONAL FUND, LTD. c/o Harmonic Fund Services The Cayman Corporate Centre, 4th Floor 27 Hospital Road Grand Cayman, Cayman Islands, British West Indies Citizenship: Cayman Islands, British West Indies TRITON 245 LTD. Cricket Square Hutchins Drive, P.O. Box 2681 GT Grand Cayman, Cayman Islands, British West Indies Citizenship: Cayman Islands, British West Indies HIGHBRIDGE CAPITAL MANAGEMENT, LLC 9 West 57th Street, 27th Floor New York, New York 10019 Citizenship: State of Delaware GLENN DUBIN c/o Highbridge Capital Management, LLC 9 West 57th Street, 27th Floor CUSIP No. 70931T103 13G Page 10 of 14 Pages New York, New York 10019 Citizenship: United States Item 2(d) Title of Class of Securities Common Shares, $0.01 par value ("Common Shares") Item 2(e) CUSIP Number 70931T103 Item 3. If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a: (a) [ ] Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o). (b) [ ] Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c). (c) [ ] Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c). (d) [ ] Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e) [ ] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) [ ] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [ ] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [ ] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); (i) [ ] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). If this statement is filed pursuant to Rule 13d-1(c), check this box. [X] Item 4. Ownership Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: As of the date of this filing, (i) Highbridge International LLC beneficially owns 792,576 Common Shares, (ii) Highbridge Long/Short Equity Fund, L.P. owns 127,149 Common Shares, (iii) Highbridge Long/Short Equity Fund, Ltd. owns 258,057 Common Shares, (iv) Highbridge Long/Short Institutional Fund, Ltd. CUSIP No. 70931T103 13G Page 11 of 14 Pages owns 70,877 Common Shares, (v) Triton 245 Ltd. owns 25,237 Common Shares and (vi) each of Highbridge Capital Management, LLC and Glenn Dubin may be deemed the beneficial owner of the 1,273,896 Common Shares beneficially owned by Highbridge International LLC, Highbridge Long/Short Equity Fund, L.P., Highbridge Long/Short Equity Fund, Ltd., Highbridge Long/Short Institutional Fund, Ltd. and Triton 245 Ltd. Highbridge Capital Management, LLC is the trading manager of Highbridge International LLC, Highbridge Long/Short Equity Fund, L.P., Highbridge Long/Short Equity Fund, Ltd. and Highbridge Long/Short Institutional Fund, Ltd. Highbridge Capital Management, LLC is an advisor to Triton 245 Ltd. Glenn Dubin is the Chief Executive Officer of Highbridge Capital Management, LLC. The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of Common Shares owned by another Reporting Person. In addition, each of Highbridge Capital Management, LLC and Glenn Dubin disclaims beneficial ownership of Common Shares held by Highbridge International LLC, Highbridge Long/Short Equity Fund, L.P., Highbridge Long/Short Equity Fund, Ltd., Highbridge Long/Short Institutional Fund, Ltd. and Triton 245 Ltd. (b) Percent of class: The Company's prospectus dated July 29, 2009 filed on Form 424(b)(4) on July 31, 2009, indicates that as of July 29, 2009, there were 16,735,317 Common Shares issued and outstanding. Therefore, based on the Company's outstanding Common Shares (i) Highbridge International LLC may be deemed to beneficially own 4.74% of the outstanding Common Shares of the Company, (ii) Highbridge Long/Short Equity Fund, L.P. may be deemed to beneficially own 0.76% of the outstanding Common Shares of the Company, (iii) Highbridge Long/Short Equity Fund, Ltd. may be deemed to beneficially own 1.54% of the outstanding Common Shares of the Company, (iv) Highbridge Long/Short Institutional Fund, Ltd. may be deemed to beneficially own 0.42% of the outstanding Common Shares of the Company, (v) Triton 245 Ltd. may be deemed to beneficially own 0.15% of the outstanding Common Shares of the Company and (vi) each of Highbridge Capital Management, LLC and Glenn Dubin may be deemed to beneficially own 7.61% of the outstanding Common Shares of the Company. The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of Common Shares owned by another Reporting Person. (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote 0 (ii) Shared power to vote or to direct the vote See Item 4(a) (iii) Sole power to dispose or to direct the disposition of 0 (iv) Shared power to dispose or to direct the disposition of See Item 4(a) CUSIP No. 70931T103 13G Page 12 of 14 Pages Item 5. Ownership of Five Percent or Less of a Class Not applicable. Item 6. Ownership of More than Five Percent on Behalf of Another Person Not applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person Not applicable. Item 8. Identification and Classification of Members of the Group See Exhibit I. Item 9. Notice of Dissolution of Group Not applicable. Item 10. Certification By signing below each of the undersigned certifies that, to the best of its knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. Exhibits: Exhibit I: Joint Filing Agreement, dated as of August 11, 2009, by and among Highbridge International LLC, Highbridge Long/Short Equity Fund, L.P., Highbridge Long/Short Equity Fund, Ltd., Highbridge Long/Short Institutional Fund, Ltd., Triton 245 Ltd., Highbridge Capital Management, LLC and Glenn Dubin. CUSIP No. 70931T103 13G Page 13 of 14 Pages SIGNATURES After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information with respect to it set forth in this statement is true, complete, and correct. Dated: August 11, 2009 HIGHBRIDGE CAPITAL MANAGEMENT, LLC HIGHBRIDGE INTERNATIONAL LLC By: Highbridge Capital Management, LLC its Trading Manager By: /s/ John Oliva - ---------------------------------- Name: John Oliva By: /s/ John Oliva Title: Managing Director ---------------------------------- Name: John Oliva Title: Managing Director - ---------------------------------- HIGHBRIDGE LONG/SHORT EQUITY FUND, HIGHBRIDGE LONG/SHORT EQUITY FUND, L.P. LTD. By: Highbridge Capital Management, LLC By: Highbridge Capital Management, LLC its Trading Manager its Trading Manager By: /s/ John Oliva By: /s/ John Oliva - ---------------------------------- ---------------------------------- Name: John Oliva Name: John Oliva Title: Managing Director Title: Managing Director - ----------------------------------- HIGHBRIDGE LONG/SHORT INSTITUTIONAL TRITON 245 LTD. FUND, LTD. By: Highbridge Capital Management, LLC By: Highbridge Capital Management, LLC its Advisor its Trading Manager By: /s/ John Oliva By: /s/ John Oliva ----------------------------------- - ----------------------------------- Name: John Oliva Name: John Oliva Title: Managing Director Title: Managing Director /s/ Glenn Dubin - ---------------------------------- GLENN DUBIN CUSIP No. 70931T103 13G Page 14 of 14 Pages EXHIBIT I JOINT FILING AGREEMENT This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the Common Shares, $0.01 par value, of PennyMac Mortgage Investment Trust, is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Dated as of August 11, 2009 HIGHBRIDGE CAPITAL MANAGEMENT, LLC HIGHBRIDGE INTERNATIONAL LLC By: Highbridge Capital Management, LLC its Trading Manager By: /s/ John Oliva - ---------------------------------- Name: John Oliva By: /s/ John Oliva Title: Managing Director ---------------------------------- Name: John Oliva Title: Managing Director - ---------------------------------- HIGHBRIDGE LONG/SHORT EQUITY FUND, HIGHBRIDGE LONG/SHORT EQUITY FUND, L.P. LTD. By: Highbridge Capital Management, LLC By: Highbridge Capital Management, LLC its Trading Manager its Trading Manager By: /s/ John Oliva By: /s/ John Oliva - ---------------------------------- ---------------------------------- Name: John Oliva Name: John Oliva Title: Managing Director Title: Managing Director - ----------------------------------- HIGHBRIDGE LONG/SHORT INSTITUTIONAL TRITON 245 LTD. FUND, LTD. By: Highbridge Capital Management, LLC By: Highbridge Capital Management, LLC its Advisor its Trading Manager By: /s/ John Oliva By: /s/ John Oliva ----------------------------------- - ----------------------------------- Name: John Oliva Name: John Oliva Title: Managing Director Title: Managing Director /s/ Glenn Dubin - ---------------------------------- GLENN DUBIN -----END PRIVACY-ENHANCED MESSAGE-----