On May 21, 2009, Principal Financial Group, Inc. (the "Company") issued $400,000,000 aggregate principal amount of its 7.875% Senior Notes due 2014 (the "2014 Notes") and $350,000,000 aggregate principal amount of its 8.875% Senior Notes due 2019 (the "2019 Notes" and, together with the 2014 Notes, the "Notes"). The Notes were issued pursuant to the Senior Indenture, dated as of May 21, 2009 (the "Senior Indenture"), among the Company, Principal Financial Services, Inc. ("PFSI") and The Bank of New York Mellon Trust Company, N.A., as trustee, as supplemented by the First Supplemental Indenture, dated as of May 21, 2009 (the "First Supplemental Indenture"), with respect to the 2014 Notes, and the Second Supplemental Indenture, dated as of May 21, 2009 (the "Second Supplemental Indenture"), with respect to the 2019 Notes. The 2014 Notes and 2019 Notes are fully and unconditionally guaranteed by PFSI pursuant to separate Guarantees, each dated as of May 21, 2009 (together, the "Guarantees").

The Notes were sold pursuant to an effective automatic shelf registration statement on Form S-3 (the "Registration Statement") (File Nos. 333-151582 and 333-151582-04) which became effective upon filing with the Securities and Exchange Commission on June 11, 2008. The closing of the sale of the Notes occurred on May 21, 2009. The Senior Indenture, the First Supplemental Indenture with respect to the 2014 Notes (including the form of 2014 Notes), the Second Supplemental Indenture with respect to the 2019 Notes (including the form of 2019 Notes), the Guarantee of PFSI with respect to the 2014 Notes and the Guarantee of PFSI with respect to the 2019 Notes are filed hereto as Exhibits 4.1, 4.2, 4.3, 4.4 and 4.5, respectively, and are incorporated by reference herein.

In connection with the issuance and sale of the Notes, the Company entered into the Underwriting Agreement, dated May 18, 2009 (the "Underwriting Agreement"), among the Company, PFSI and Citigroup Global Markets Inc., Credit Suisse Securities (USA) LLC and Deutsche Bank Securities Inc., as representatives of the underwriters named in Schedule I thereto. A copy of the Underwriting Agreement is filed as Exhibit 1.1 hereto.

A copy of the opinion of Debevoise & Plimpton LLP, relating to the validity of the Notes and the Guarantees is filed as Exhibit 5.1 hereto, and a copy of the opinion of Karen E. Shaff, Executive Vice President and General Counsel of the Company and PFSI, relating to certain legal matters relating to the issuance of the Guarantees is filed as Exhibit 5.2 hereto.

The exhibits to this Current Report on Form 8-K are hereby incorporated by reference into the Registration Statement.

(d) Exhibits.

Exhibit No.                                Description

Exhibit 1.1   Underwriting Agreement, dated May 18, 2009, among Principal Financial
              Group, Inc., Principal Financial Services, Inc. and Citigroup Global
              Markets Inc., Credit Suisse Securities (USA) LLC and Deutsche Bank
              Securities Inc., as representatives of the underwriters named in
              Schedule I thereto.

Exhibit 4.1    Senior Indenture, dated as of May 21, 2009, among Principal Financial
               Group, Inc., as issuer, Principal Financial Services, Inc., as
               guarantor, and The Bank of New York Mellon Trust Company, as trustee.

Exhibit 4.2    First Supplemental Indenture (including the form of 2014 Notes),
               dated as of May 21, 2009, among Principal Financial Group, Inc., as
               issuer, Principal Financial Services, Inc., as guarantor, and The
               Bank of New York Mellon Trust Company, as trustee.

Exhibit 4.3    Second Supplemental Indenture (including the form of 2019 Notes),
               dated as of May 21, 2009, among Principal Financial Group, Inc., as
               issuer, Principal Financial Services, Inc., as guarantor, and The
               Bank of New York Mellon Trust Company, as trustee.

Exhibit 4.4    Guarantee from Principal Financial Services, Inc. with respect to the
               7.875% Senior Notes due 2014.

Exhibit 4.5    Guarantee from Principal Financial Services, Inc. with respect to the
               8.875% Senior Notes due 2019.

Exhibit 5.1    Opinion of Debevoise & Plimpton LLP.

Exhibit 5.2    Opinion of Karen E. Shaff, Executive Vice President and General
               Counsel of Principal Financial Group, Inc. and Principal Financial
               Services, Inc.

Exhibit 23.1   Consent of Debevoise & Plimpton LLP (contained in Exhibit 5.1).

Exhibit 23.2   Consent of Karen E. Shaff, Executive Vice President and General
               Counsel of Principal Financial Group, Inc. and Principal Financial
               Services, Inc. (contained in Exhibit 5.2).