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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>As filed with the United States Securities and Exchange
Commission on May 6, 2021</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"><B>Registration No. 333-</B></P>

<DIV STYLE="padding: 1pt 0in 0in; border-top: Black 0.75pt solid">

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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">Washington, D.C. 20549</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: center"><B>FORM S-8</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">REGISTRATION STATEMENT</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">under</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">the Securities Act of 1933</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: center"><B>Omnicom Group Inc. </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center">(Exact name of registrant as specified in its
charter)</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 27%">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>New York</B><BR>
    <FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 8pt">(State or other jurisdiction<BR>
    of incorporation or organization)</FONT></P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD STYLE="width: 46%; font: 10pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 27%; font: 10pt Times New Roman, Times, Serif; text-align: center"><B>13-1514814</B><FONT STYLE="font-size: 8pt"><BR>
(I.R.S. Employer<BR>
Identification No.)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>280 Park Avenue</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>New York, NY 10017</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>(212) 415-3600</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Address of Principal Executive Offices) (Zip Code)</P></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Omnicom Group Inc. 2021 Incentive Award Plan </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Full title of the Plan)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Copy to:</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Michael J. O&#8217;Brien, Esq.</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Executive Vice President, General Counsel and Secretary</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Omnicom Group Inc.</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>280 Park Avenue</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>New York, NY 10017</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>(212) 415-3600</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P></TD>
    <TD STYLE="width: 50%">
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Copy to:<BR>
    Joel H. Trotter, Esq.</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Latham &amp; Watkins LLP</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>555 Eleventh Street, N.W.</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Washington, D.C. 20004</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>(202) 637-2200</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B><BR>
    <BR>
    </B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center">(Name, address, including zip code, and telephone number, including area code, of agent for service)</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of
&#8220;large accelerated filer,&#8221; &#8220;accelerated filer,&#8221; &#8220;smaller reporting company,&#8221; and &#8220;emerging growth
company&#8221; in Rule 12b-2 of the Exchange Act.</P>

<P STYLE="font: 6pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="width: 19%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="width: 54%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="width: 23%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="width: 1%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD>Large&nbsp;accelerated&nbsp;filer</TD>
    <TD>&nbsp;</TD>
    <TD>&#9746;</TD>
    <TD>&nbsp;</TD>
    <TD>Accelerated&nbsp;filer</TD>
    <TD>&nbsp;</TD>
    <TD>&#9744;</TD></TR>
  <TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD>Non-accelerated filer</TD>
    <TD>&nbsp;</TD>
    <TD>&#9744;</TD>
    <TD>&nbsp;</TD>
    <TD>Smaller&nbsp;reporting&nbsp;company</TD>
    <TD>&nbsp;</TD>
    <TD>&#9744;</TD></TR>
  <TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Emerging&nbsp;growth&nbsp;company</TD>
    <TD>&nbsp;</TD>
    <TD>&#9744;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0">If an emerging growth company, indicate by check mark if the registrant
has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant
to Section&nbsp;7(a)(2)(B) of the Securities Act.&nbsp;&nbsp;&#9744;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: center"><B>CALCULATION OF REGISTRATION FEE</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; border-top: Black 1pt solid">
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Title of Securities to<BR>
    be Registered</B></P></TD>
    <TD STYLE="width: 19%; border-top: Black 1pt solid; text-align: center"><FONT STYLE="font-size: 9pt"><B><BR>
Amount<BR>
&nbsp;to be<BR>
Registered<SUP>(1)</SUP></B></FONT></TD>
    <TD STYLE="width: 18%; border-top: Black 1pt solid; text-align: center"><FONT STYLE="font-size: 9pt"><B><BR>
Proposed<BR>
Maximum<BR>
Offering Price<BR>
Per Share<SUP>(2)</SUP></B></FONT></TD>
    <TD STYLE="width: 20%; border-top: Black 1pt solid">
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 9pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Proposed<BR>
    Maximum<BR>
    Aggregate Offering<BR>
    Price<SUP>(2)</SUP></B></P></TD>
    <TD STYLE="width: 18%; border-top: Black 1pt solid; text-align: center"><FONT STYLE="font-size: 9pt"><B><BR>
Amount of<BR>
Registration<BR>
Fee</B></FONT></TD></TR>
  <TR>
    <TD STYLE="border-top: Black 1pt solid; vertical-align: top; text-align: center">Common Stock,<BR>
$0.15 par value </TD>
    <TD STYLE="border-top: Black 1pt solid; text-align: center">14,700,000 shares</TD>
    <TD STYLE="border-top: Black 1pt solid; text-align: center">$82.24</TD>
    <TD STYLE="border-top: Black 1pt solid; text-align: center">$1,208,928,000.00</TD>
    <TD STYLE="border-top: Black 1pt solid; text-align: center">$131,894.05</TD></TR>
  </TABLE>
<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 8pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.3in">(1)</TD><TD STYLE="text-align: justify">This registration statement on Form S-8 (the &#8220;Registration Statement&#8221;) registers the issuance
of up to 14,700,000 shares of common stock, which are issuable pursuant to the awards to be granted under the Omnicom Group Inc. 2021
Incentive Award Plan, and adjustments to shares to account for any changes in capitalization such as, a stock split, stock dividend, or
similar transaction involving the registrant&#8217;s common stock, in accordance with Rule 416(a) under the Securities Act of 1933, as
amended (the &#8220;Securities Act&#8221;).</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 8pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.3in">(2)</TD><TD STYLE="text-align: justify">Estimated solely for calculating the amount of the registration fee, pursuant to paragraphs (c) and (h)
of Rule 457 of the General Rules and Regulations under the Securities Act, on the basis of the average of the high and low sale prices
of such securities on the New York Stock Exchange on April 30, 2021, within five business days prior to filing.</TD></TR></TABLE>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: center"><B>PART I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 12pt 0 0; text-align: center"><B>INFORMATION REQUIRED IN THE SECTION 10(a)
PROSPECTUS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 12pt 0 0"><B>Item&nbsp;1. Plan Information. </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0pt 12pt; text-align: justify; text-indent: 0.5in">Not required to be filed
with this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 12pt 0pt 0pt"><B>Item&nbsp;2. Registrant Information and Employee Plan Annual
Information. </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0pt 12pt; text-align: justify; text-indent: 0.5in">Not required to be filed
with this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: center"><B>PART II</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt; text-align: center"><B>INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> <B>Item 3.</B> <B>Incorporation of Documents by Reference.</B></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0pt 12pt; text-align: justify; text-indent: 0.5in">The following documents
filed with the Securities and Exchange Commission (the &#8220;Commission&#8221;) by Omnicom Group Inc. (the &#8220;Company&#8221;) are
incorporated as of their respective dates in this Registration Statement by reference:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">The Company&#8217;s Annual Report on <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/29989/000002998921000004/omc-20201231.htm">Form 10-K</A> for the year ended December 31, 2020, filed with the Commission
on February 18, 2021;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">The information specifically incorporated by reference into the Company&#8217;s Annual Report on Form
10-K from its Definitive <A HREF="https://www.sec.gov/Archives/edgar/data/29989/000120677421000823/omc3858241-def14a.htm">Proxy Statement on Schedule 14A</A>, filed with the SEC on March 25, 2021;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">The Company&#8217;s Quarterly Report on <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/29989/000002998921000009/omc-20210331.htm">Form 10-Q</A> for the quarter ended March 31, 2021, filed with the
Commission on April 20, 2021;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">The Company&#8217;s Current Report on <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/29989/000089109221004037/omc8k050321.htm">Form 8-K</A>, filed with the SEC on May 3, 2021; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">The description of the Company&#8217;s common stock contained in the Registration Statement on <A HREF="https://www.sec.gov/Archives/edgar/data/29989/000089109220001836/e8385s3asr.htm">Form S-3</A>
filed with the Commission on February 19, 2020 (File No. 333-236502), including any subsequently filed amendments and reports updating
such description.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in">All documents filed by
the Company pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the &#8220;Exchange Act&#8221;),
subsequent to the date of this Registration Statement and prior to the filing of a post-effective amendment which indicates that all securities
offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this
Registration Statement and are a part hereof from the date of filing such documents; except as to any information furnished to, rather
than filed with, the Commission (including under Items 2.02 and 7.01 of Form 8-K). Any statement contained in a document incorporated
or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement
to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated
by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as
so modified or superseded, to constitute a part of this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> <B>Item 4.</B> <B>Description of Securities.</B></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0pt 12pt; text-align: justify; text-indent: 0.5in">Not required to be filed
with this registration.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> <B>Item 5.</B> <B>Interests of Named Experts and Counsel.</B></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0pt 12pt; text-align: justify; text-indent: 0.5in">Not applicable.</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> <B>Item 6.</B> <B>Indemnification of Directors and Officers.</B></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0pt 12pt; text-align: justify; text-indent: 0.5in">The Company&#8217;s
certificate of incorporation contains a provision limiting the liability of directors to acts or omissions determined by a judgment or
other final adjudication to have been in bad faith, involving intentional misconduct or a knowing violation of the law, or resulting
in personal gain to which the director was not legally entitled. The Company&#8217;s by-laws provide that an officer or director will
be indemnified against any costs or liabilities, including attorneys&#8217; fees and amounts paid in settlement with the Company&#8217;s
consent, in connection with any claim, action or proceeding provided that no indemnification may be made to or on behalf of such person
if (i) his or her acts were committed in bad faith or were the result of his or her active and deliberate dishonesty and were material
to such action or proceedings or (ii) he or she personally gained in fact a financial profit or other advantage to which he or she was
not legally entitled.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">Section 722(a) of the New York Business Corporation
Law provides that a corporation may indemnify any officer or director made, or threatened to be made, a party to an action other than
one by or in the right of the corporation, including an action by or in the right of any other corporation or other enterprise that any
director or officer of the corporation served in any capacity at the request of the corporation, because he or she was a director or officer
of the corporation, or served such other corporation or other enterprise in any capacity, against judgments, fines, amounts paid in settlement
and reasonable expenses, including attorneys&#8217; fees, actually and necessarily incurred as a result of such action, or any appeal
therein, if such director or officer acted in good faith for a purpose he or she reasonably believed to be in, or in the case of service
for any other corporation or other enterprise, not opposed to, the best interests of the corporation and, in criminal actions, had no
reasonable cause to believe that his conduct was unlawful.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">Section 722(c) of the New York Business Corporation
Law provides that a corporation may indemnify any officer or director made, or threatened to be made, a party to an action by or in the
right of the corporation by reason of the fact that he or she is or was an officer or director of the corporation, or is or was serving
at the request of the corporation as a director or officer of any other corporation or other enterprise, against amounts paid in settlement
and reasonable expenses, including attorneys&#8217; fees, actually and necessarily incurred by him or her in connection with the defense
or settlement of such action, or in connection with an appeal therein, if such director or officer acted in good faith for a purpose which
he or she reasonably believed to be in, or, in the case of service for another corporation or other enterprise, not opposed to, the best
interests of the corporation. The corporation may not, however, indemnify any officer or director pursuant to Section 722(c) in respect
of (1) a threatened action or a pending action that is settled or otherwise disposed of or (2) any claim, issue or matter for which the
person has been adjudged to be liable to the corporation, unless and only to the extent that the court in which the action was brought
or, if no action was brought, any court of competent jurisdiction, determines upon application that the person is fairly and reasonably
entitled to indemnity for that portion of the settlement and expenses as the court deems proper.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">Section 723 of the New York Business Corporation Law
provides that an officer or director who has been successful on the merits or otherwise in the defense of a civil or criminal action of
the character set forth in Section 722 is entitled to indemnification as permitted in such Section. Section 724 of the New York Business
Corporation Law permits a court to award the indemnification required by Section 722.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">The Company has entered into agreements with its directors
and certain officers to indemnify them for liabilities or costs arising out of any alleged or actual breach of duty, neglect, errors or
omissions while serving as a director or officer. The Company also maintains and pays premiums for directors&#8217; and officers&#8217;
liability insurance policies.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"> <B>Item 7.</B> <B>Exemption from Registration Claimed.</B></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0pt 12pt; text-align: justify; text-indent: 0.5in">Not applicable.</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 12pt"> <B>Item 8.</B> <B>Exhibits.</B><FONT STYLE="font-size: 8pt">&nbsp;</FONT></P>



<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; text-align: center"><U>Exhibit </U></TD>
    <TD STYLE="width: 90%"><U>Description</U></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">4.1</TD>
    <TD><A HREF="https://www.sec.gov/Archives/edgar/data/29989/000002998911000007/exhibit31.htm">Restated Certificate of Incorporation of Omnicom Group Inc. (filed as Exhibit 3.1 to the Company&#8217;s Quarterly Report on Form 10-Q for the quarter ended September 30, 2011, filed with the Commission on October 20, 2011 and incorporated herein by reference).</A></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">4.2</TD>
    <TD><A HREF="https://www.sec.gov/Archives/edgar/data/29989/000089109218009194/e3252ex3-1.htm">By-laws of the Company, as amended and restated on December 11, 2018 (filed as Exhibit 3.1 to the Company&#8217;s Current Report on Form 8-K, filed with the Commission on December 14, 2018 and incorporated herein by reference).</A></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">5.1*</TD>
    <TD><A HREF="e13458ex5-1.htm">Opinion of Latham &amp; Watkins LLP.</A></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">23.1*</TD>
    <TD STYLE="font-family: Arial Unicode MS"><FONT STYLE="font-family: Times New Roman, Times, Serif"><A HREF="e13458ex5-1.htm">Consent of Latham &amp; Watkins LLP (included in Exhibit 5.1).</A></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">23.2*</TD>
    <TD><A HREF="e13458ex23-2.htm">Consent of KPMG LLP.</A></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">24.1*</TD>
    <TD>Power of Attorney (included on signature page of this Registration Statement).</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">99.1</TD>
    <TD><A HREF="https://www.sec.gov/Archives/edgar/data/29989/000120677421000823/omc3858241-def14a.htm">Omnicom Group Inc. 2021 Incentive Award Plan (filed with the Company&#8217;s Definitive Proxy Statement, filed on March 25, 2021 and incorporated herein by reference).</A></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 2%">*</TD>
    <TD>Filed herewith. </TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 6pt"> <B>Item 9.</B> <B>Undertakings.</B></P>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(a)</TD><TD STYLE="text-align: justify">The undersigned registrant hereby undertakes:</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1in"></TD><TD STYLE="width: 0.5in">(1)</TD><TD STYLE="text-align: justify">To file, during any period in which offers or sales are being made, a post-effective amendment to this
Registration Statement:</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">To include any prospectus required by Section 10(a)(3) of the Securities Act;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">To reflect in the prospectus any facts or events arising after the effective date of the Registration
Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change
in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities
offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or
high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule
424(b) if, in the aggregate, the changes in volume and price represent no more than 20% change in the maximum aggregate offering price
set forth in the &#8220;Calculation of Registration Fee&#8221; table in the effective Registration Statement;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1.5in"></TD><TD STYLE="width: 0.5in">(iii)</TD><TD STYLE="text-align: justify">To include any material information with respect to the plan of distribution not previously disclosed
in the Registration Statement or any material change to such information in the Registration Statement;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in"><I>provided, however</I>,
that paragraphs (a)(1)(i) and (a)(1)(ii) shall not apply if the information required to be included in a post-effective amendment by those
paragraphs is contained in reports filed with or furnished to the Commission by the registrant pursuant to Section 13 or Section 15(d)
of the Exchange Act that are incorporated by reference in this Registration Statement.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1in"></TD><TD STYLE="width: 0.5in">(2)</TD><TD STYLE="text-align: justify">That, for the purpose of determining any liability under the Securities Act, each such post-effective
amendment shall be deemed to be a new registration statement relating to</TD></TR></TABLE>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt 1.5in; text-align: justify">the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial <I>bona fide</I> offering thereof.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 1in"></TD><TD STYLE="width: 0.5in">(3)</TD><TD STYLE="text-align: justify">To remove from registration by means of a post-effective amendment any of the securities being registered
which remain unsold at the termination of the offering.</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(b)</TD><TD STYLE="text-align: justify">The undersigned registrant hereby undertakes that, for purposes of determining any liability under the
Securities Act, each filing of the registrant&#8217;s annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act that
is incorporated by reference in the Registration Statement shall be deemed to be a new Registration Statement relating to the securities
offered herein, and the offering of such securities at that time shall be deemed to be the initial <I>bona fide</I> offering thereof.</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(c)</TD><TD STYLE="text-align: justify">Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors,
officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised
that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities
Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by
the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of
any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered,
the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed
by the final adjudication of such issue.</TD></TR></TABLE>


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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center">SIGNATURES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in">Pursuant to the requirements
of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements
for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized,
in the City of New York, State of New York, on this 6<SUP>th</SUP> day of May, 2021.</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2"><B>OMNICOM GROUP INC.</B></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 49%">&nbsp;</TD>
    <TD STYLE="width: 5%">By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; width: 46%">/s/ Philip J. Angelastro</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Philip J. Angelastro</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Executive Vice President and Chief Financial Officer</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 3.25in">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt; margin-bottom: 6pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center">POWER OF ATTORNEY</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in">Each person whose signature
appears below hereby authorizes and appoints John D. Wren and Philip J. Angelastro, and each of them, with full power to act without the
other, as attorney-in-fact and agent, with full power of substitution and resubstitution, to sign on his or her behalf, individually and
in the capacities stated below, and to file any and all amendments, including post-effective amendments, to this Registration Statement
and other documents in connection therewith, with the Commission, granting to said attorney-in-fact and agent full power and authority
to perform any other act on behalf of the undersigned required to be done in the premises.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: justify; text-indent: 0.5in">Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates
indicated.</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 31%; text-align: center"><U>Signature</U></TD>
    <TD STYLE="width: 3%; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 43%; text-align: center"><U>Title</U></TD>
    <TD STYLE="width: 23%; text-align: center"><U>Date</U></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ John D. Wren</TD>
    <TD>&nbsp;</TD>
    <TD>Chairman and Chief Executive Officer and</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">John D. Wren</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Director</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><I>(Principal Executive Officer)</I></P></TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Philip J. Angelastro</TD>
    <TD>&nbsp;</TD>
    <TD>Executive Vice President and Chief Financial</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Philip J. Angelastro</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>Officer <I>(Principal Financial Officer)</I></TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Andrew L. Castellaneta</TD>
    <TD>&nbsp;</TD>
    <TD>Senior Vice President, Chief Accounting Officer</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Andrew L. Castellaneta</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD><I>(Principal Accounting Officer)</I></TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Mary C. Choksi</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Mary C. Choksi</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Leonard S. Coleman, Jr.</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Leonard S. Coleman, Jr.</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Susan S. Denison</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Susan S. Denison</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Ronnie S. Hawkins</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Ronnie S. Hawkins</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Deborah J. Kissire</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Deborah J. Kissire</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Gracia C. Martore</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Gracia C. Martore</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Linda Johnson Rice</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Linda Johnson Rice</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Valerie M. Williams</TD>
    <TD>&nbsp;</TD>
    <TD>Director</TD>
    <TD STYLE="text-align: center">May 6, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Valerie M. Williams</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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[{"type": "S-8", "sequence": "1", "filename": "e13458s8.htm", "description": "FORM S-8", "secsgml_size_bytes": 45504}]
{"company-data": {"conformed-name": "OMNICOM GROUP INC.", "cik": "0000029989", "assigned-sic": "7311", "irs-number": "131514814", "state-of-incorporation": "NY", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-255825", "film-number": "21897581"}, "business-address": {"street1": "280 PARK AVENUE", "city": "NEW YORK", "state": "NY", "zip": "10017", "phone": "2124153600"}, "mail-address": {"street1": "280 PARK AVENUE", "city": "NEW YORK", "state": "NY", "zip": "10017"}, "former-company": [{"former-conformed-name": "OMNICOM GROUP INC", "date-changed": "19920703"}, {"former-conformed-name": "DOYLE DANE BERNBACH GROUP INC", "date-changed": "19861117"}, {"former-conformed-name": "DOYLE DANE BERNBACH INTERNATIONAL INC", "date-changed": "19850604"}]}
As filed with the United States Securities and Exchange
Commission on May 6, 2021
Registration No. 333-
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
under
the Securities Act of 1933
Omnicom Group Inc.
(Exact name of registrant as specified in its
charter)
New York
(State or other jurisdiction
of incorporation or organization)
13-1514814
(I.R.S. Employer
Identification No.)
280 Park Avenue
New York, NY 10017
(212) 415-3600
(Address of Principal Executive Offices) (Zip Code)
Omnicom Group Inc. 2021 Incentive Award Plan
(Full title of the Plan)
Copy to:
Michael J. O'Brien, Esq.
Executive Vice President, General Counsel and Secretary
Omnicom Group Inc.
280 Park Avenue
New York, NY 10017
(212) 415-3600
Copy to:
Joel H. Trotter, Esq.
Latham & Watkins LLP
555 Eleventh Street, N.W.
Washington, D.C. 20004
(202) 637-2200
(Name, address, including zip code, and telephone number, including area code, of agent for service)
Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of
"large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth
company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer
☒
Accelerated filer
☐
Non-accelerated filer
☐
Smaller reporting company
☐
Emerging growth company
☐
If an emerging growth company, indicate by check mark if the registrant
has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant
to Section 7(a)(2)(B) of the Securities Act.  ☐
CALCULATION OF REGISTRATION FEE
Title of Securities to
be Registered
Amount
to be
Registered
(1)
Proposed
Maximum
Offering Price
Per Share
(2)
Proposed
Maximum
Aggregate Offering
Price
(2)
Amount of
Registration
Fee
Common Stock,
$0.15 par value
14,700,000 shares
$82.24
$1,208,928,000.00
$131,894.05
(1)
This registration statement on Form S-8 (the "Registration Statement") registers the issuance
of up to 14,700,000 shares of common stock, which are issuable pursuant to the awards to be granted under the Omnicom Group Inc. 2021
Incentive Award Plan, and adjustments to shares to account for any changes in capitalization such as, a stock split, stock dividend, or
similar transaction involving the registrant's common stock, in accordance with Rule 416(a) under the Securities Act of 1933, as
amended (the "Securities Act").
(2)
Estimated solely for calculating the amount of the registration fee, pursuant to paragraphs (c) and (h)
of Rule 457 of the General Rules and Regulations under the Securities Act, on the basis of the average of the high and low sale prices
of such securities on the New York Stock Exchange on April 30, 2021, within five business days prior to filing.
PART I
INFORMATION REQUIRED IN THE SECTION 10(a)
PROSPECTUS
Item 1. Plan Information.
Not required to be filed
with this Registration Statement.
Item 2. Registrant Information and Employee Plan Annual
Information.
Not required to be filed
with this Registration Statement.
PART II
INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT
Item 3.
Incorporation of Documents by Reference.
The following documents
filed with the Securities and Exchange Commission (the "Commission") by Omnicom Group Inc. (the "Company") are
incorporated as of their respective dates in this Registration Statement by reference:
·
The Company's Annual Report on
Form 10-K
for the year ended December 31, 2020, filed with the Commission
on February 18, 2021;
·
The information specifically incorporated by reference into the Company's Annual Report on Form
10-K from its Definitive
Proxy Statement on Schedule 14A
, filed with the SEC on March 25, 2021;
·
The Company's Quarterly Report on
Form 10-Q
for the quarter ended March 31, 2021, filed with the
Commission on April 20, 2021;
·
The Company's Current Report on
Form 8-K
, filed with the SEC on May 3, 2021; and
·
The description of the Company's common stock contained in the Registration Statement on
Form S-3
filed with the Commission on February 19, 2020 (File No. 333-236502), including any subsequently filed amendments and reports updating
such description.
All documents filed by
the Company pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"),
subsequent to the date of this Registration Statement and prior to the filing of a post-effective amendment which indicates that all securities
offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this
Registration Statement and are a part hereof from the date of filing such documents; except as to any information furnished to, rather
than filed with, the Commission (including under Items 2.02 and 7.01 of Form 8-K). Any statement contained in a document incorporated
or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement
to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated
by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as
so modified or superseded, to constitute a part of this Registration Statement.
Item 4.
Description of Securities.
Not required to be filed
with this registration.
Item 5.
Interests of Named Experts and Counsel.
Not applicable.
Item 6.
Indemnification of Directors and Officers.
The Company's
certificate of incorporation contains a provision limiting the liability of directors to acts or omissions determined by a judgment or
other final adjudication to have been in bad faith, involving intentional misconduct or a knowing violation of the law, or resulting
in personal gain to which the director was not legally entitled. The Company's by-laws provide that an officer or director will
be indemnified against any costs or liabilities, including attorneys' fees and amounts paid in settlement with the Company's
consent, in connection with any claim, action or proceeding provided that no indemnification may be made to or on behalf of such person
if (i) his or her acts were committed in bad faith or were the result of his or her active and deliberate dishonesty and were material
to such action or proceedings or (ii) he or she personally gained in fact a financial profit or other advantage to which he or she was
not legally entitled.
Section 722(a) of the New York Business Corporation
Law provides that a corporation may indemnify any officer or director made, or threatened to be made, a party to an action other than
one by or in the right of the corporation, including an action by or in the right of any other corporation or other enterprise that any
director or officer of the corporation served in any capacity at the request of the corporation, because he or she was a director or officer
of the corporation, or served such other corporation or other enterprise in any capacity, against judgments, fines, amounts paid in settlement
and reasonable expenses, including attorneys' fees, actually and necessarily incurred as a result of such action, or any appeal
therein, if such director or officer acted in good faith for a purpose he or she reasonably believed to be in, or in the case of service
for any other corporation or other enterprise, not opposed to, the best interests of the corporation and, in criminal actions, had no
reasonable cause to believe that his conduct was unlawful.
Section 722(c) of the New York Business Corporation
Law provides that a corporation may indemnify any officer or director made, or threatened to be made, a party to an action by or in the
right of the corporation by reason of the fact that he or she is or was an officer or director of the corporation, or is or was serving
at the request of the corporation as a director or officer of any other corporation or other enterprise, against amounts paid in settlement
and reasonable expenses, including attorneys' fees, actually and necessarily incurred by him or her in connection with the defense
or settlement of such action, or in connection with an appeal therein, if such director or officer acted in good faith for a purpose which
he or she reasonably believed to be in, or, in the case of service for another corporation or other enterprise, not opposed to, the best
interests of the corporation. The corporation may not, however, indemnify any officer or director pursuant to Section 722(c) in respect
of (1) a threatened action or a pending action that is settled or otherwise disposed of or (2) any claim, issue or matter for which the
person has been adjudged to be liable to the corporation, unless and only to the extent that the court in which the action was brought
or, if no action was brought, any court of competent jurisdiction, determines upon application that the person is fairly and reasonably
entitled to indemnity for that portion of the settlement and expenses as the court deems proper.
Section 723 of the New York Business Corporation Law
provides that an officer or director who has been successful on the merits or otherwise in the defense of a civil or criminal action of
the character set forth in Section 722 is entitled to indemnification as permitted in such Section. Section 724 of the New York Business
Corporation Law permits a court to award the indemnification required by Section 722.
The Company has entered into agreements with its directors
and certain officers to indemnify them for liabilities or costs arising out of any alleged or actual breach of duty, neglect, errors or
omissions while serving as a director or officer. The Company also maintains and pays premiums for directors' and officers'
liability insurance policies.
Item 7.
Exemption from Registration Claimed.
Not applicable.
Item 8.
Exhibits.
Exhibit
Description
4.1
Restated Certificate of Incorporation of Omnicom Group Inc. (filed as Exhibit 3.1 to the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2011, filed with the Commission on October 20, 2011 and incorporated herein by reference).
4.2
By-laws of the Company, as amended and restated on December 11, 2018 (filed as Exhibit 3.1 to the Company's Current Report on Form 8-K, filed with the Commission on December 14, 2018 and incorporated herein by reference).
5.1*
Opinion of Latham & Watkins LLP.
23.1*
Consent of Latham & Watkins LLP (included in Exhibit 5.1).
23.2*
Consent of KPMG LLP.
24.1*
Power of Attorney (included on signature page of this Registration Statement).
99.1
Omnicom Group Inc. 2021 Incentive Award Plan (filed with the Company's Definitive Proxy Statement, filed on March 25, 2021 and incorporated herein by reference).
*
Filed herewith.
Item 9.
Undertakings.
(a)
The undersigned registrant hereby undertakes:
(1)
To file, during any period in which offers or sales are being made, a post-effective amendment to this
Registration Statement:
(i)
To include any prospectus required by Section 10(a)(3) of the Securities Act;
(ii)
To reflect in the prospectus any facts or events arising after the effective date of the Registration
Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change
in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities
offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or
high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule
424(b) if, in the aggregate, the changes in volume and price represent no more than 20% change in the maximum aggregate offering price
set forth in the "Calculation of Registration Fee" table in the effective Registration Statement;
(iii)
To include any material information with respect to the plan of distribution not previously disclosed
in the Registration Statement or any material change to such information in the Registration Statement;
provided, however
,
that paragraphs (a)(1)(i) and (a)(1)(ii) shall not apply if the information required to be included in a post-effective amendment by those
paragraphs is contained in reports filed with or furnished to the Commission by the registrant pursuant to Section 13 or Section 15(d)
of the Exchange Act that are incorporated by reference in this Registration Statement.
(2)
That, for the purpose of determining any liability under the Securities Act, each such post-effective
amendment shall be deemed to be a new registration statement relating to
the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial
bona fide
offering thereof.
(3)
To remove from registration by means of a post-effective amendment any of the securities being registered
which remain unsold at the termination of the offering.
(b)
The undersigned registrant hereby undertakes that, for purposes of determining any liability under the
Securities Act, each filing of the registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act that
is incorporated by reference in the Registration Statement shall be deemed to be a new Registration Statement relating to the securities
offered herein, and the offering of such securities at that time shall be deemed to be the initial
bona fide
offering thereof.
(c)
Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors,
officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised
that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities
Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by
the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of
any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered,
the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed
by the final adjudication of such issue.
SIGNATURES
Pursuant to the requirements
of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements
for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized,
in the City of New York, State of New York, on this 6
th
day of May, 2021.
OMNICOM GROUP INC.
By:
/s/ Philip J. Angelastro
Philip J. Angelastro
Executive Vice President and Chief Financial Officer
POWER OF ATTORNEY
Each person whose signature
appears below hereby authorizes and appoints John D. Wren and Philip J. Angelastro, and each of them, with full power to act without the
other, as attorney-in-fact and agent, with full power of substitution and resubstitution, to sign on his or her behalf, individually and
in the capacities stated below, and to file any and all amendments, including post-effective amendments, to this Registration Statement
and other documents in connection therewith, with the Commission, granting to said attorney-in-fact and agent full power and authority
to perform any other act on behalf of the undersigned required to be done in the premises.
Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates
indicated.
Signature
Title
Date
/s/ John D. Wren
Chairman and Chief Executive Officer and
May 6, 2021
John D. Wren
Director
(Principal Executive Officer)
/s/ Philip J. Angelastro
Executive Vice President and Chief Financial
May 6, 2021
Philip J. Angelastro
Officer
(Principal Financial Officer)
/s/ Andrew L. Castellaneta
Senior Vice President, Chief Accounting Officer
May 6, 2021
Andrew L. Castellaneta
(Principal Accounting Officer)
/s/ Mary C. Choksi
Director
May 6, 2021
Mary C. Choksi
/s/ Leonard S. Coleman, Jr.
Director
May 6, 2021
Leonard S. Coleman, Jr.
/s/ Susan S. Denison
Director
May 6, 2021
Susan S. Denison
/s/ Ronnie S. Hawkins
Director
May 6, 2021
Ronnie S. Hawkins
/s/ Deborah J. Kissire
Director
May 6, 2021
Deborah J. Kissire
/s/ Gracia C. Martore
Director
May 6, 2021
Gracia C. Martore
/s/ Linda Johnson Rice
Director
May 6, 2021
Linda Johnson Rice
/s/ Valerie M. Williams
Director
May 6, 2021
Valerie M. Williams