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<CONFORMED-NAME>iBio, Inc.
<CIK>0001420720
<ASSIGNED-SIC>2834
<IRS-NUMBER>262797813
<STATE-OF-INCORPORATION>DE
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<BUSINESS-ADDRESS>
<STREET1>600 MADISON AVENUE, SUITE 1601
<CITY>NEW YORK
<STATE>NY
<ZIP>10022-1737
<PHONE>302 355-0650
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<STREET1>600 MADISON AVENUE, SUITE 1601
<CITY>NEW YORK
<STATE>NY
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<DATE-CHANGED>20080806
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<DATE-CHANGED>20071210
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

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

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>WASHINGTON, DC 20549</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SCHEDULE 14A</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proxy Statement Pursuant to Section 14(a)
of the Securities Exchange Act of 1934 (Amendment No. __ )</B></P>

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

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<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Filed
by the Registrant&nbsp;</FONT><FONT STYLE="font-family: Wingdings">&#120;</FONT></TD></TR>
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    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Filed
by a Party other than the Registrant&nbsp;</FONT><FONT STYLE="font-family: Wingdings; font-size: 10pt">&#168;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
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<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Check the appropriate box:</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0; width: 5%"><FONT STYLE="font-family: Wingdings; font-size: 10pt">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0; width: 95%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Preliminary Proxy Statement</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings; font-size: 10pt">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2))</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings; font-size: 10pt">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Definitive Proxy Statement</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings; font-size: 10pt">&#120;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Definitive Additional Materials</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings; font-size: 10pt">&#168;</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Soliciting Material Under Rule 14a-12</FONT></TD></TR>
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<P STYLE="font: 13.5pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"></P>

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

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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp; <FONT STYLE="font: 10pt Times New Roman, Times, Serif">(Name of Registrant as Specified in Its Charter)</FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp; <FONT STYLE="font: 10pt Times New Roman, Times, Serif">(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)</FONT></P>


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<TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Payment of Filing Fee (Check the appropriate box):</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; width: 5%; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; width: 5%; text-indent: 0">&nbsp;</TD>
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    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">No fee required</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD>
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(1)</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title of each class of securities to which transaction applies:</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(2)</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Aggregate number of securities to which transaction applies:</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(3)</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
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    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(4)</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Proposed maximum aggregate value of transaction:</FONT></TD></TR>
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    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
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    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(5)</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Total fee paid:</FONT></TD></TR>
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    <TD STYLE="padding: 0; width: 5%; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; width: 5%; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; width: 90%; text-indent: 0">&nbsp;</TD></TR>
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    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Wingdings; font-size: 10pt">&#168;</FONT></TD>
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Fee paid previously with preliminary materials.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
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<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(1)</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Amount previously paid:</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(2)</FONT></TD>
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<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(3)</FONT></TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Filing Party:</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; text-indent: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(4)</FONT></TD>
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<P STYLE="font: 13.5pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><IMG SRC="image_001.jpg" ALT="" STYLE="height: 95px; width: 176px"></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; background-color: white"><B>March 2, 2020</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SUPPLEMENT TO NOTICE OF 2019 ANNUAL MEETING
OF STOCKHOLDERS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>AND DEFINITIVE PROXY STATEMENT DATED
JANUARY 23, 2020</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">This proxy statement supplement relates
to the 2019 annual meeting (the &ldquo;2019 Annual Meeting&rdquo;) of stockholders of iBio, Inc. (the &ldquo;Company,&rdquo; &ldquo;we,&rdquo;
or &ldquo;us&rdquo;) scheduled to be held on March 5, 2020 and supplements and amends the related Definitive Proxy Statement filed
with the Securities and Exchange Commission on January 23, 2020 (the &ldquo;Proxy Statement&rdquo;).</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Withdrawal of Proposal 5 to Approve
an Amendment to the Company&rsquo;s Certificate of Incorporation, as amended, to effect a Reverse Stock Split of the Company&rsquo;s
Common Stock</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The Company announced on March 2, 2020,
that its Board of Directors has decided it will not seek authority from the shareholders at the 2019 Annual Meeting to effect
a reverse split of its issued and outstanding shares of common stock and, accordingly, Proposal 5 in the Proxy Statement for such
authority has been withdrawn from the agenda for the Annual Meeting. Proposal No. 5, as set forth in the Proxy Statement, provided
for an amendment to the Company&rsquo;s Certificate of Incorporation to effect a reverse stock split of the Company&rsquo;s common
stock at a ratio not less than one-for-five (1:5) and not greater than one-for-twenty-five (1:25), with the exact ratio to be
publicly announced and set within that range at the discretion of the Company&rsquo;s Board before filing of the amendment effecting
the proposed reverse stock split without further approval or authorization of the Company&rsquo;s stockholders.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">In making its decision, the Board took
the trading history and the results of meetings with representatives of various investment banks, investment funds, and other
members of the investment community into account when it concluded that the market for the Company&rsquo;s common stock (per-share
market pricing and liquidity), investor interest, and our financing and capital-raising abilities were satisfactory at this time
and might not be materially enhanced if our shareholders were to provide the reverse split authority initially sought by Proposal
5. The Board, however, reserved the right to request iBio&rsquo;s shareholders to approve a reverse split proposal at any point
in the future.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Supplemental Disclosure with respect
to Proposal 6 to Approve an Amendment to our 2018 Omnibus Equity Incentive Plan </B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">In addition, this filing supplements
the disclosure included in the Proxy Statement relating to Proposal 6 &ndash; Approval of an Amendment to the Company&rsquo;s
2018 Omnibus Equity Incentive Plan (the &ldquo;2018 Plan&rdquo;) to increase the number of shares of our common stock authorized
for issuance thereunder from 3.5 million shares to 6.5 million shares and to incorporate changes to include restricted stock units
and performance-based awards as grant types issuable under the 2018 Plan. This supplement is intended to present in a format that
is more convenient for our shareholders and supplement the disclosure in the Proxy Statement regarding the eligible participants
in the Company&rsquo;s 2018 Plan, the basis for participation in the 2018 Plan and the market value of the securities underlying
the options and other rights that may be granted under the 2018 Plan as of the latest practicable date.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">As of March 2, 2020, the there are six
non-employee directors, three officers and approximately 53 employees and consultants of the Company or its subsidiaries who could
be eligible to participate in the 2018 Plan. There are no prospective employees, consultants or non-employee directors eligible
as of March 2, 2020 to participate in the 2018 Plan.</P>

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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">As described in the Proxy Statement,
the 2018 Plan is administered by our board of directors. The board has the authority to grant awards under 2018 Plan to eligible
participants who are providing, or who have provided, services to, the Company or any affiliate of the Company, and to prospective
employees consultants and non-employee directors, but only if the awards will vest or settle after such prospective participant
has begun performing services to the Company or an affiliate. The basis for participation for eligible service providers in the
2018 Plan is the board&rsquo;s discretion. In exercising its discretion, the board will consider the purposes of the 2018 Plan,
which are described in the Proxy Statement under &ldquo;Summary of 2018 Plan Features &ndash; Purpose&rdquo;.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The securities underlying options and other rights that may
be granted under the 2018 Plan are shares of the Company&rsquo;s common stock, par value $.001 per share. The market value of a
share of the Company&rsquo;s common stock as of the latest practicable date prior to the filing of the Proxy Statement is disclosed
on page 30 of the Proxy Statement. The closing sale price of the Company&rsquo;s common stock on February 28, 2020 was $2.45 per
share.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">No additional changes have been made to
the Proxy Statement or the record date, the location of the meeting or the proposals to be brought before the 2019 Annual Meeting,
which are presented in the Proxy Statement.</P>

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



<P STYLE="margin: 0"></P>

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