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            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="4">SECURITIES AND EXCHANGE COMMISSION</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="2">Washington, D.C. 20549</font></b></p>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 18pt; TEXT-ALIGN: center">
            <font size="2">__________________</font></p>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="4">FORM 8-K</font></b></p>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 18pt; TEXT-ALIGN: center">
            <b><font size="2">CURRENT REPORT</font></b></p>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="2">Pursuant to Section 13 or 15(d) of the</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="2">Securities Exchange Act of 1934</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">&nbsp;</p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><font size="2">Date
            of Report:</font> <b><font size="2">October 16, 2007</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 6pt; TEXT-ALIGN: center"><font size="2">(Date
            of earliest event reported)</font></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">&nbsp;</p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="4">PRINCIPAL FINANCIAL GROUP, INC.</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <font size="2">(Exact name of registrant as specified in its charter)</font></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">&nbsp;</p>

            <div align="left">
                &nbsp;
            </div>

            <div align="left">
                <table cellspacing="0" cellpadding="0" width="600" border="0">
                    <tr>
                        <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="196">
                            <p style="MARGIN-TOP: 0pt; FONT-WEIGHT: bold; FONT-SIZE: 18pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px; FONT-FAMILY: 'TIMES'" align="center">
                            <b><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'TIMES NEW ROMAN'">Delaware</font></b></p>
                        </td>

                        <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="196">
                            <p style="MARGIN-TOP: 0pt; FONT-WEIGHT: bold; FONT-SIZE: 18pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px; FONT-FAMILY: 'TIMES'" align="center">
                            <b><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'TIMES NEW ROMAN'">1-16725</font></b></p>
                        </td>

                        <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="196">
                            <p style="MARGIN-TOP: 0pt; FONT-WEIGHT: bold; FONT-SIZE: 18pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px; FONT-FAMILY: 'TIMES'" align="center">
                            <b><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'TIMES NEW ROMAN'">42-1520346</font></b></p>
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                        <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="196">
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                            <b><font style="FONT-WEIGHT: normal; FONT-SIZE: 10pt; FONT-FAMILY: 'TIMES NEW ROMAN'">
                            (State or other jurisdiction of incorporation)</font></b></p>
                        </td>

                        <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="196">
                            <p style="MARGIN-TOP: 0pt; FONT-WEIGHT: bold; FONT-SIZE: 18pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px; FONT-FAMILY: 'TIMES'" align="center">
                            <b><font style="FONT-WEIGHT: normal; FONT-SIZE: 10pt; FONT-FAMILY: 'TIMES NEW ROMAN'">
                            (Commission file number)</font></b></p>
                        </td>

                        <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="196">
                            <p style="MARGIN-TOP: 0pt; FONT-WEIGHT: bold; FONT-SIZE: 18pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px; FONT-FAMILY: 'TIMES'" align="center">
                            <b><font style="FONT-WEIGHT: normal; FONT-SIZE: 10pt; FONT-FAMILY: 'TIMES NEW ROMAN'">
                            (I.R.S. Employer Identification Number)</font></b></p>
                        </td>
                    </tr>
                </table>
            </div>

            <div align="left">
                &nbsp;
            </div>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="2">711 High Street, Des Moines, Iowa 50392</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <font size="2">(Address of principal executive offices)</font></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">&nbsp;</p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <b><font size="2">(515) 247-5111</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">
            <font size="2">(Registrant&rsquo;s telephone number, including area code)</font></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center">&nbsp;</p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left"><font size="2">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:</font></p>

            <p></p>

            <p style="MARGIN-TOP: 0pt; FONT-WEIGHT: bold; FONT-SIZE: 10pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px; FONT-FAMILY: 'TIMES'" align="left">
            <font size="2"><b><font style="FONT-WEIGHT: normal; FONT-FAMILY: 'TIMES NEW ROMAN'">[
            ]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Written communications pursuant to Rule 425 under the
            Securities Act (17 CFR 230.425)<br>
            <br>
            [ ]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the
            Exchange Act (17 CFR 240.14a-12)<br>
            <br>
            [ ]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pre-commencement communications pursuant to Rule
            14d-2(b) under the Exchange Act (17 CFR<br>
            <br>
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;240.14d-2(b))<br>
            <br>
            [ ]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pre-commencement communications pursuant to Rule
            13e-4(c) under the Exchange Act (17 CFR<br>
            <br>
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;240.13e-4(c))</font></b></font></p>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 18pt; TEXT-ALIGN: center">
            <font size="2">__________________</font></p>
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            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify">
            <b><font size="2">Item
            7.01</font></b><font size="1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
            <b><font size="2">Regulation FD Disclosure</font></b></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify">&nbsp;</p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-INDENT: 0.65in; TEXT-ALIGN: justify">
            <font size="2">This report is filed quarterly to disclose Principal Global
            Investors&rsquo; assets under management, prior to the availability of Principal
            Financial Group, Inc's (The Principal(R)) quarterly earnings release. As of September
            30, 2007, Principal Global Investors had $244.9 billion in securities, real estate and
            other investment assets under management.</font></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: justify">&nbsp;</p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-INDENT: 0.64in; TEXT-ALIGN: justify">
            <font size="2">Principal Global Investors is the collective term used to describe the
            asset management operations of the following subsidiaries of The Principal: Principal
            Global Investors, LLC; Principal Real Estate Investors, LLC; Spectrum Asset Management,
            Inc.; Post Advisory Group, LLC; Columbus Circle Investors; Edge Asset Management, Inc.;
            Morley Financial Services, Inc.; Principal Global Investors (Europe) Limited; Principal
            Global Investors (Singapore) Ltd.; Principal Global Investors (Australia) Ltd.; and
            Principal International, Inc. and its majority-owned affiliates.</font></p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-INDENT: 0.64in; TEXT-ALIGN: justify">
            &nbsp;</p>

            <div align="left">
                <font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                In all other disclosures, including The Principal's quarterly financial supplement,
                the term Principal Global Investors does not include Principal International, Inc.
                or any of its affiliates.</font>
            </div>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 12pt; TEXT-ALIGN: center">
            <font size="2">SIGNATURE</font></p>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 12pt; TEXT-INDENT: 0.51in; TEXT-ALIGN: justify">
            <font size="2">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.</font></p>

            <p style="MARGIN-TOP: 12pt; MARGIN-BOTTOM: 12pt; TEXT-INDENT: 0.51in; TEXT-ALIGN: justify">
            </p>

            <table cellspacing="0" cellpadding="0" width="600" border="0">
                <tr>
                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                    &nbsp;</td>

                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                        <p style="MARGIN-TOP: 0pt; FONT-SIZE: 12pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px" align="left">
                        <font face="Times New Roman, Times, serif" size="2">PRINCIPAL FINANCIAL
                        GROUP, INC.</font></p>
                    </td>
                </tr>

                <tr>
                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                    <font face="Times New Roman, Times, serif" size="2">&nbsp;</font> </td>

                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                    <font face="Times New Roman, Times, serif" size="2">&nbsp;</font> </td>
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                <tr>
                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                    <font face="Times New Roman, Times, serif" size="2">&nbsp;</font> </td>

                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                        <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px" align="left">
                        <font face="Times New Roman, Times, serif" size="2">By: /s/ Thomas J.
                        Graf</font></p>
                    </td>
                </tr>

                <tr>
                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                    <font face="Times New Roman, Times, serif" size="2">&nbsp;</font> </td>

                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                        <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px" align="left">
                        <font face="Times New Roman, Times, serif" size="2">_________________________________</font></p>
                    </td>
                </tr>

                <tr>
                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                    <font face="Times New Roman, Times, serif" size="2">&nbsp;</font> </td>

                    <td style="PADDING-RIGHT: 0.07in; PADDING-LEFT: 0.07in; PADDING-BOTTOM: 0in; PADDING-TOP: 0in" valign="top" width="295">
                        <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0in; TEXT-INDENT: 0px" align="left">
                        <font face="Times New Roman, Times, serif" size="2">Name: Thomas J.
                        Graf<br>
                        Title: Senior Vice President &ndash; Investor Relations</font></p>
                    </td>
                </tr>
            </table>
            <br>
            <br>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left">&nbsp;</p>

            <div align="left">
                &nbsp;
            </div>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left">&nbsp;</p>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left">&nbsp;</p>

            <div align="left">
                &nbsp;
            </div>

            <div align="left">
                &nbsp;
            </div>

            <div align="left">
                &nbsp;
            </div>

            <div align="left">
                <font face="Times New Roman, Times, serif" size="2">October 16, 2007</font>
            </div>

            <div align="left">
                &nbsp;
            </div>

            <p style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 3in; TEXT-INDENT: 0.5in; TEXT-ALIGN: left">
            &nbsp;</p>

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                <font face="Times New Roman, Times, serif" size="2">Page 2</font>
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{"company-data": {"conformed-name": "PRINCIPAL FINANCIAL GROUP INC", "cik": "0001126328", "assigned-sic": "6321", "irs-number": "421520346", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-16725", "film-number": "071173486"}, "business-address": {"street1": "711 HIGH STREET", "city": "DES MOINES", "state": "IA", "zip": "50392", "phone": "5152475111"}, "mail-address": {"street1": "711 HIGH STREET", "city": "DES MOINES", "state": "IA", "zip": "50392"}}
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:
October 16, 2007
(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 of incorporation)
(Commission file number)
(I.R.S. Employer 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 Principal Global
            Investors' assets under management, prior to the availability of Principal
            Financial Group, Inc's (The Principal(R)) quarterly earnings release. As of September
            30, 2007, Principal Global Investors had $244.9 billion in securities, real estate and
            other investment assets under management.
Principal Global Investors is the collective term used to describe the
            asset management operations of the following subsidiaries of The Principal: Principal
            Global Investors, LLC; Principal Real Estate Investors, LLC; Spectrum Asset Management,
            Inc.; Post Advisory Group, LLC; Columbus Circle Investors; Edge Asset Management, Inc.;
            Morley Financial Services, Inc.; Principal Global Investors (Europe) Limited; Principal
            Global Investors (Singapore) Ltd.; Principal Global Investors (Australia) Ltd.; and
            Principal International, Inc. and its majority-owned affiliates.
In all other disclosures, including The Principal's quarterly financial supplement,
                the term Principal Global Investors does not include Principal International, Inc.
                or any of its affiliates.
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
October 16, 2007
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