On October 29, 2012, PennyMac Mortgage Investment Trust (the "Company"), through two of its wholly-owned subsidiaries, PennyMac Corp. ("PMC") and PennyMac Mortgage Investment Trust Holdings I, LLC ("PMITH"), entered into amendments to
(i) its master repurchase agreement, dated November 2, 2010, by and among Credit Suisse First Boston Mortgage Capital LLC ("CSFB") and PMC, the Company and PennyMac Operating Partnership, L.P. (the "Operating Partnership") (the "PMC Repurchase Agreement"), and (ii) its master repurchase agreement, dated March 29, 2012, by and among CSFB and PMITH, the Company and the Operating Partnership (the "PMITH Repurchase Agreement"). The PMC Repurchase Agreement and the PMITH Repurchase Agreement are each referred to herein as a "Repurchase Agreement" and collectively as the "Repurchase Agreements."

Pursuant to the terms of the Repurchase Agreements, PMC or PMITH, as applicable, may sell, and later repurchase, newly originated mortgage loans. The PMC Repurchase Agreement is used to fund newly originated mortgage loans that are purchased from correspondent lenders by PMC and held for sale and/or securitization. The PMITH Repurchase Agreement is used to fund newly originated mortgage loans that have been purchased by PMC from correspondent lenders and pledged by PMC to PMITH pending sale and/or securitization by PMC. The principal amount paid by CSFB for each eligible mortgage loan under each Repurchase Agreement is based on a percentage of the lesser of the market value or the unpaid principal balance of such mortgage loan. Upon the repurchase of a mortgage loan, PMC or PMITH, as applicable, is required to repay CSFB the principal amount related to such mortgage loan plus accrued interest (at a rate reflective of the current market and based on CSFB's cost of funds plus a margin) to the date of such repurchase.

The obligations of PMC and PMITH, as applicable, are fully guaranteed by the Company and the Operating Partnership. The mortgage loans are serviced by an affiliate of the Company, PennyMac Loan Services, LLC, pursuant to the terms of the applicable Repurchase Agreement. Other material terms of the PMC Repurchase Agreement and related guaranty are described more fully in Item 5 to the Company's Quarterly Report on Form 10-Q filed on November 8, 2010, and other material terms of the PMITH Repurchase Agreement and related guaranty are described more fully in the Company's Current Report on Form 8-K filed on April 4, 2012.

Under the terms of the amendments, the maximum aggregate purchase price provided for in each Repurchase Agreement was increased from $300 million to $400 million, the available amount of which is reduced under each Repurchase Agreement by any outstanding repurchase amounts under the other Repurchase Agreement. The amendments are effective until November 7, 2012, at which time the amendments will expire and the maximum aggregate purchase price under each Repurchase Agreement will revert back to $300 million, the available amount of which is reduced under each Repurchase Agreement by any outstanding repurchase amounts under the other Repurchase Agreement. All other terms and conditions of the Repurchase Agreements and the related guaranties remain the same in all material respects.

The foregoing description of the amendment to the PMC Repurchase Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the amendment, which has been filed with this report as Exhibit 1.1, and the full text of the PMC Repurchase Agreement and the related guaranty, which were filed as Exhibits 10.13 and 10.14, respectively, to the Company's Quarterly Report on Form 10-Q filed on November 8, 2010, and any amendments to the PMC Repurchase Agreement filed thereafter.

The foregoing description of the amendment to the PMITH Repurchase Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the amendment, which has been filed with this report as Exhibit 1.2, and the full text of the PMITH Repurchase Agreement and the related guaranty, which were filed as Exhibits 1.1 and 1.2, respectively, to the Company's Current Report on Form 8-K filed on April 4, 2012, and any amendments to the PMITH Repurchase Agreement filed thereafter.

The information set forth under Item 1.01 of this report is incorporated herein by reference.

(d) Exhibits.

Exhibit No.                                 Description

1.1            Amendment Number Nine to Master Repurchase Agreement, dated as of
               October 29, 2012, among Credit Suisse First Boston Mortgage
               Capital LLC, PennyMac Corp., PennyMac Mortgage Investment Trust and
               PennyMac Operating Partnership, L.P.
1.2            Amendment Number Three to Master Repurchase Agreement, dated as of
               October 29, 2012, among Credit Suisse First Boston Mortgage
               Capital LLC, PennyMac Mortgage Investment Trust Holdings I, LLC,
               PennyMac Mortgage Investment Trust and PennyMac Operating
               Partnership, L.P.