| SECURITIES AND EXCHANGE COMMISSION |
| Washington, D.C. 20549 |
| _________________________ |
| FORM 8-K |
| CURRENT REPORT |
| Pursuant to Section 13 or 15(d) of the |
| Securities Exchange Act of 1934 |
| Date of Report:April 22, 2010 |
| (Date of earliest event reported) |
| PRINCIPAL FINANCIAL GROUP, INC. |
| (Exact name of registrant as specified in its charter) |
| Delaware | 1-16725 | 42-1520346 |
| (State or other jurisdiction | (Commission file number) | (I.R.S. Employer |
| of incorporation) | Identification Number) |
| 711 High Street, Des Moines, Iowa 50392 | |
| (Address of principal executive offices) | |
| (515) 247-5111 | |
| (Registrant’s telephone number, including area code) | |
| Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing | |
| obligation of the registrant under any of the following provisions: | |
| [ ] | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| [ ] | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| [ ] | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR |
| 240.14d-2(b)) | |
| [ ] | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR |
| 240.13e-4(c)) | |
| _________________________ | |
| Item 7.01 Regulation FD Disclosure | |
| This report is filed quarterly to disclose assets under management (“AUM”) by | |
| asset manager, prior to the availability of Principal Financial Group, Inc's (the | |
| “Company”) quarterly earnings release. The amounts presented herein will be consistent | |
| with the format of AUM by asset manager and presented again in such format within the | |
| Company's financial supplement for the quarter ended March 31, 2010 when that | |
| document is posted to the Company's investor relations web site on or about May 3, | |
| 2010. AUM may include assets managed directly and pursuant to dual employment | |
| agreements among affiliated companies. | |
| As of March 31, 2010, the AUM by asset manager were $211.5 billion for | |
| Principal Global Investors and $33.5 billion for Principal International. | |
| SIGNATURE | |
| Pursuant to the requirements of the Securities Exchange Act of 1934, the | |
| registrant has duly caused this report to be signed on its behalf by the undersigned | |
| thereunto duly authorized. | |
| PRINCIPAL FINANCIAL GROUP, INC. | |||
| By: /s/ Thomas J. Graf | |||
| Name: Thomas J. Graf | |||
| Title: Senior Vice President – Investor | |||
| Relations | |||
| Date: | April 22, 2010 | ||