<SEC-DOCUMENT>0001641172-25-022998.txt : 20250811
<SEC-HEADER>0001641172-25-022998.hdr.sgml : 20250811
<ACCEPTANCE-DATETIME>20250811165233
ACCESSION NUMBER:		0001641172-25-022998
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250811
DATE AS OF CHANGE:		20250811

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Shuttle Pharmaceuticals Holdings, Inc.
		CENTRAL INDEX KEY:			0001757499
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-289231
		FILM NUMBER:		251202722

	BUSINESS ADDRESS:	
		STREET 1:		401 PROFESSIONAL DRIVE
		STREET 2:		SUITE 260
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20879
		BUSINESS PHONE:		(240) 403-4212

	MAIL ADDRESS:	
		STREET 1:		401 PROFESSIONAL DRIVE
		STREET 2:		SUITE 260
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20879
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>form424b3.htm
<DESCRIPTION>424B3
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"> <B>Filed pursuant to Rule 424(b)(3)</B> </P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"> <B>Registration No. 333-289231</B> </P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>PROSPECTUS</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Shuttle
Pharmaceuticals Holdings, Inc.</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>1,180,877
Shares of Common Stock</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Pursuant
to this prospectus, the selling stockholder identified herein is offering on a resale basis 1,180,877 shares of common stock of Shuttle
Pharmaceuticals Holdings, Inc., consisting of (i) 21,924 outstanding shares and (ii) 1,158,953 shares issuable upon exercise of pre-funded
warrants, each exercisable into one share of common stock at a nominal exercise price per share of $0.001, without expiration. The outstanding
shares of common stock and the pre-funded warrants were issued to the selling stockholder in connection with a private placement we completed
on June 24, 2025. We will not receive any of the proceeds from the sale by the selling stockholder of the shares.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
selling stockholder may sell or otherwise dispose of the shares covered by this prospectus in a number of different ways and at
varying prices. We provide more information about how the selling stockholder may sell or otherwise dispose of the shares covered by
this prospectus in the section entitled &ldquo;<A HREF="#a_007">Plan of Distribution&rdquo;</A> on page 7. Discounts, concessions,
commissions and similar selling expenses attributable to the sale of shares covered by this prospectus will be borne by the selling
stockholder. We will pay all expenses (other than discounts, concessions, commissions and similar selling expenses) relating to the
registration of the shares with the Securities and Exchange Commission, or the SEC.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">You
should carefully read this prospectus, together with the documents we incorporate by reference, before you invest in our common stock.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our
common stock is listed on The Nasdaq Capital Market under the symbol &ldquo;SHPH.&rdquo; On August 1, 2025, the last reported
sale price for our common stock was $3.50  per share.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Investing
in our common stock involves substantial risk. Please read &ldquo;<A HREF="#a_003">Risk Factors&rdquo;</A> beginning on page 6 of this prospectus and in
the documents we incorporate by reference.</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Neither
the SEC nor any state securities commission has approved or disapproved of these securities or passed upon the accuracy or adequacy of
this prospectus. Any representation to the contrary is a criminal offense.</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
date of this prospectus is August 11, 2025</FONT></P>

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


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>TABLE
OF CONTENTS</B></FONT></P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_001">ABOUT THIS PROSPECTUS</A></FONT></P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"></P></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; width: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4</FONT></TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: White">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_002">SUMMARY</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif">4</FONT></TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="#a_003"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">RISK FACTORS</FONT></A></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif">6</TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: White">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_004">CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif">6</TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><A HREF="#a_005"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">USE OF PROCEEDS</FONT></A></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">6</FONT></TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: White">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_006">SELLING STOCKHOLDER</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">7</FONT></TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_007">PLAN OF DISTRIBUTION</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">7</FONT></TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: White">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_008">LEGAL MATTERS</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif">8</TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: rgb(204,238,255)">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_009">EXPERTS</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif">8</TD></TR>
  <TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top; background-color: White">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_010">INFORMATION INCORPORATED BY REFERENCE</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">9</FONT></TD></TR>
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    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><A HREF="#a_011">WHERE YOU CAN FIND MORE INFORMATION</A></FONT></TD>
    <TD STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif">9</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_001"></A>ABOUT
THIS PROSPECTUS</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">This
prospectus is part of a registration statement that we have filed with the SEC pursuant to which the selling stockholder named herein
may, from time to time, offer and sell or otherwise dispose of the shares of our common stock covered by this prospectus. You should
not assume that the information contained in this prospectus is accurate on any date subsequent to the date set forth on the front cover
of this prospectus or that any information we have incorporated by reference is correct on any date subsequent to the date of the document
incorporated by reference, even though this prospectus is delivered or shares of common stock are sold or otherwise disposed of on a
later date. It is important for you to read and consider all information contained in this prospectus, including the documents incorporated
by reference therein, in making your investment decision. You should also read and consider the information in the documents to which
we have referred you under &ldquo;Where You Can Find More Information&rdquo; and &ldquo;Information Incorporated by Reference&rdquo;
in this prospectus.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">We
have not authorized anyone to give any information or to make any representation to you other than those contained or incorporated by
reference in this prospectus. You must not rely upon any information or representation not contained or incorporated by reference in
this prospectus. This prospectus does not constitute an offer to sell or the solicitation of an offer to buy any of our shares of common
stock other than the shares of our common stock covered hereby, nor does this prospectus constitute an offer to sell or the solicitation
of an offer to buy any securities in any jurisdiction to any person to whom it is unlawful to make such offer or solicitation in such
jurisdiction. Persons who come into possession of this prospectus in jurisdictions outside the United States are required to inform themselves
about, and to observe, any restrictions as to the offering and the distribution of this prospectus applicable to those jurisdictions.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">As
used in this prospectus and unless otherwise indicated, the terms &ldquo;we,&rdquo; &ldquo;us,&rdquo; &ldquo;our,&rdquo; &ldquo;Shuttle
Pharma,&rdquo; or the &ldquo;Company&rdquo; refer to Shuttle Pharmaceuticals Holdings, Inc. and its consolidated subsidiaries.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">All
share amounts in this prospectus give effect to our 1-for-25 reverse stock split effected on June 16, 2025, unless otherwise indicated.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_002"></A>SUMMARY</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>About
Us&mdash;Business Overview</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Founded
by Georgetown University Medical School faculty members, Shuttle Pharmaceuticals Holdings, Inc. is a discovery and development stage
pharmaceutical company leveraging our proprietary technology to develop novel therapies that are designed to cure cancer. Originally
formed as Shuttle Pharmaceuticals, LLC in 2012, our goal is to extend the benefits of cancer treatments by leveraging insights into cancer
therapy with surgery, radiation therapy, chemotherapy and immunotherapy. While there are several therapies being developed with the goal
of curing cancer, one of the most effective and proven approaches to this is radiation therapy (&ldquo;RT&rdquo;). We are developing
a pipeline of products designed to address the limitations of the current standard of cancer therapies. We believe that our product candidates
will enable us to deliver cancer treatments that are safer, more reliable and at a greater scale than that of the current standard of
care.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our
operations to date have focused on continuing our research and development efforts to advance Ropidoxuridine clinical testing and improved
drug formulation, to advance HDAC6 inhibitor (SP-2-225) preclinical development and explore the application of the PC-RAD Test, predictive
biomarkers of radiation response. The clinical development of Ropidoxuridine has included completion of a Phase I clinical trial to establish
drug bioavailability and a maximum tolerated dose for use in Phase II clinical trials. TCG GreenChem, with whom we have contracted for
process research, development and cGMP compliant manufacture of IPdR, has manufactured the API of Ropidoxuridine and the University of
Iowa Pharmaceuticals has formulated the drug product for use in our current Phase II clinical trial in brain cancer patients undergoing
radiation therapy. The drug product (capsules) were shipped to CRO Theradex Oncology and distributed to clinical trial sites that are
fully approved to enroll patients in the trial. Shuttle Pharma received approval from the FDA to begin the clinical trial. The FDA thereafter
made recommendations to expand the clinical trial to include a randomized dose &ldquo;optimization&rdquo; step and we agreed with the
recommendation. Meetings with engaged clinical sites to review the protocol documents have occurred and FDA required IRB approvals have
been received. With FDA recommended changes incorporated into the revised protocol and the completion of site initiation visits, we commenced
our Phase II clinical study in October 2024. The Company&rsquo;s radiation biomarker project and the health disparities project have
been completed and we are proceeding with plans for clinical validation and potential for commercialization of Ropidoxuridine as a radiation
sensitizer.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Corporate
Information</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
Company was formed as a limited liability company in the state of Maryland in December 2012 and was converted to a C corporation in August
2016. In June 2018, we completed a share exchange with Shuttle Pharma Acquisition Corp. Inc. (&ldquo;Acquisition Corp.&rdquo;), pursuant
to which Shuttle Pharmaceuticals, Inc. became a subsidiary of Acquisition Corp. and we subsequently changed the name of Acquisition Corp.
to Shuttle Pharmaceuticals Holdings, Inc.</FONT></P>

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


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our
executive offices are located at 401 Professional Drive, Suite 260, Gaithersburg, MD 20879 and our telephone number is (240) 430-4212.
Our corporate website is www.shuttlepharma.com. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form
8-K, and all amendments to those reports, if any, are available to you free of charge through the &ldquo;Investor Relations&rdquo; section
of our website as soon as reasonably practicable after such materials have been electronically filed with or furnished to the SEC. Information
contained on our website does not form a part of this prospectus.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Private
Placement</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">On
June 20, 2025, we entered into a securities purchase agreement with an accredited investor, for the sale by the Company to the investor,
in a private placement, of 21,924 shares of common stock and 1,158,953 pre-funded warrants to purchase shares of common stock, at a purchase
price of $3.60 per share or $3.599 per pre-funded warrant. The private placement closed on June 24, 2025.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
pre-funded warrants are immediately exercisable, at a nominal exercise price of $0.001, and may be exercised at any time until all of
the pre-funded warrants are exercised in full. The pre-funded warrants may not be exercised to the extent such exercise would result
in the holder beneficially owning more than 4.99% of the Company&rsquo;s outstanding common stock.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">In
connection with the purchase agreement, the Company entered into a registration rights agreement with the investor. Pursuant to the
registration rights agreement, the Company agreed to file a registration statement with the SEC to register for resale the shares of
common stock, and the shares issuable upon exercise of the pre-funded warrants issued under the purchase agreement, within 10 days
of the closing date, and to have such registration statement declared effective within 90 days of the closing date (or 120 days if
the registration statement is reviewed by the SEC). The registration rights agreement provided that the Company would be
obligated to pay certain liquidated damages to the investor if the Company failed to file the resale registration statement, or to
have such registration statement declared effective by such dates. The Company was prepared to file the registration statement
within the deadline required under the registration rights agreement and its failure to do so within such deadline was due to a
request by the investor. The Company has interpreted such request by the investor as a waiver of any liquidated damages under
the registration rights agreement with respect to the Company&rsquo;s failure to file the registration statement within 10 days of
the closing date.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">WestPark
Capital, Inc. (&ldquo;WestPark&rdquo;) acted as the placement agent in connection with the private placement pursuant to an engagement
agreement between the Company and WestPark, as amended (as amended, the &ldquo;Engagement Agreement&rdquo;). Pursuant to the Engagement
Agreement, the Company paid WestPark a fee of 4% of the gross proceeds received by the Company in the private placement. The Company
also reimbursed certain expenses of WestPark.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">This
prospectus covers the resale of the 21,924 shares and 1,158,953 shares issuable upon exercise of the pre-funded warrants issued under
the purchase agreement.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_003"></A>RISK
FACTORS</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>An
investment in our securities involves a high degree of risk. Before deciding whether to invest in our securities, you should consider
carefully the risks and uncertainties discussed below, as well as those under the heading &ldquo;Risk Factors&rdquo; contained in our
most recent annual report on Form 10-K filed with the SEC, and as incorporated by reference in this prospectus, as the same may be amended,
supplemented or superseded by the risks and uncertainties described under similar headings in the other documents that are filed by us
after the date hereof and incorporated by reference into this prospectus. Please also read carefully the section below titled &ldquo;Cautionary
Note Regarding Forward-Looking Statements.&rdquo;</I></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><I>The
sale of a substantial amount of our common stock, including resale of the shares of common stock by the selling stockholder in the public
market, could adversely affect the market price of our common stock.</I></B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">We
are registering for resale 1,180,877 shares of common stock, including 1,158,953 shares issuable upon the exercise of pre-funded warrants
held by the selling stockholder. Sales of substantial amounts of our common stock in the public market, or the perception that such sales
might occur, could adversely affect the market price of our common stock. We cannot predict if and when the selling stockholder may sell
such shares in the public market.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center; text-indent: 24pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_004"></A>CAUTIONARY
NOTE REGARDING FORWARD-LOOKING STATEMENTS</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 33.75pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">All
statements in this prospectus and the documents incorporated by reference that are not historical facts should be considered &ldquo;Forward
Looking Statements&rdquo; within the meaning of the &ldquo;Safe Harbor&rdquo; provisions of the Private Securities Litigation Reform
Act of 1995. Such statements involve known and unknown risks, uncertainties and other factors that may cause actual results, performance
or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by
the forward-looking statements. Some of the forward-looking statements can be identified by the use words such as &ldquo;believe,&rdquo;
&ldquo;expect,&rdquo; &ldquo;may,&rdquo; &ldquo;estimates,&rdquo; &ldquo;should,&rdquo; &ldquo;seek,&rdquo; &ldquo;approximately,&rdquo;
&ldquo;intend,&rdquo; &ldquo;plan,&rdquo; &ldquo;estimate,&rdquo; &ldquo;project,&rdquo; &ldquo;continue&rdquo; or &ldquo;anticipates&rdquo;
or similar expressions or words, or the negatives of those expressions or words. These statements may be made directly in this prospectus
and they may also be incorporated by reference in this prospectus from other documents filed with the SEC, and include, but are not limited
to, statements about future financial and operating results and performance, statements about our plans, objectives, expectations and
intentions with respect to future operations and products, and other statements that are not historical facts. These forward-looking
statements are based upon the current beliefs and expectations of our management and are inherently subject to significant business,
economic and competitive uncertainties and contingencies, many of which are difficult to predict and generally beyond our control. In
addition, these forward-looking statements are subject to assumptions with respect to future business strategies and decisions that are
subject to change. Actual results may differ materially from the anticipated results discussed in these forward-looking statements as
a result of several factors including, but not limited to, those noted under &ldquo;Risk Factors&rdquo; in this prospectus and in the
documents incorporated by reference in this prospectus.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_005"></A>USE
OF PROCEEDS</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">We
will not receive any of the proceeds from any sale or other disposition of the shares of common stock covered by this prospectus. All
proceeds from the sale of the shares will be paid directly to the selling stockholder.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_006"></A>SELLING
STOCKHOLDER</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
shares of common stock being offered by the selling stockholder are those shares previously issued to the selling stockholder and shares
underlying the pre-funded warrants issued to the selling stockholder under the purchase agreement between us and the selling stockholder,
dated June 20, 2025 (see &ldquo;Summary&mdash;Private Placement&rdquo;). We are registering the shares of common stock in order to permit
the selling stockholder to offer the shares for resale from time to time. Except for the ownership of the shares of common stock and
as otherwise disclosed in this prospectus, the selling stockholder has not had any material relationship with us within the past three
years. The selling stockholder is not a broker-dealer or an affiliate of a broker-dealer.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
table below lists the selling stockholder and other information regarding the beneficial ownership of the shares of common stock by the
selling stockholder. The second column lists the number of shares of common stock beneficially owned by the selling stockholder, as of
August 1, 2025. The third column lists the shares of common stock being offered by this prospectus by the selling stockholder.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">In
accordance with the terms of a registration rights agreement with the selling stockholder, this prospectus covers the resale of the number
of shares of common stock and shares underlying pre-funded warrants issued to the selling stockholder under the purchase agreement. The
fourth column assumes the sale of all of the shares offered by the selling stockholder pursuant to this prospectus.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
selling stockholder may sell all, some or none of its shares in this offering. See &ldquo;Plan of Distribution.&rdquo;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold">Selling Stockholder</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; font-weight: bold"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Number of shares beneficially owned prior to offering<SUP>(1)</SUP></B></FONT></TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; font-weight: bold">Number of shares offered</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; font-weight: bold"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Number of shares beneficially owned after offering<SUP>(2)</SUP></B></FONT></TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; font-weight: bold"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Percentage of shares beneficially owned after offering<SUP>(3)</SUP></B></FONT></TD><TD STYLE="padding-bottom: 1pt; font-weight: bold">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 40%; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Alternative Investment Capital Inc.<SUP>(4)</SUP></FONT></TD><TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 11%; text-align: right">1,180,877</TD><TD STYLE="width: 1%; text-align: left"><SUP>(5)</SUP></TD><TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 11%; text-align: right">1,180,877</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 11%; text-align: right">0</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 11%; text-align: right">0</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
  </TABLE>

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

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(1)
Under applicable SEC rules, a person is deemed to beneficially own securities which the person has the right to acquire within 60 days
through the exercise of any option or warrant or through the conversion of a convertible security. Also under applicable SEC rules, a
person is deemed to be the &ldquo;beneficial owner&rdquo; of a security with regard to which the person directly or indirectly, has or
shares (a) voting power, which includes the power to vote or direct the voting of the security, or (b) investment power, which includes
the power to dispose, or direct the disposition, of the security, in each case, irrespective of the person&rsquo;s economic interest
in the security. To our knowledge, subject to community property laws where applicable, the selling stockholder named in the table has
sole voting and investment power with respect to the common stock shown as beneficially owned by the selling stockholder, except as otherwise
set forth in the footnotes to the table.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(2)
Represents the amount of shares that will be held by the selling stockholder after completion of this offering based on the assumptions
that (a) all shares of common stock offered for resale under this prospectus will be sold and (b) no other shares of common stock are
acquired or sold by the selling stockholder prior to completion of this offering. However, the selling stockholder may sell all, some
or none of such shares offered pursuant to this prospectus.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(3)
Based on 1,070,773 shares of common stock outstanding as of August 1, 2025.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(4)
Connor Yuen has voting and dispositive power over the shares. The address of the selling stockholder is 850 New Burton Road, Suite
201, Dover, DE 19904.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(5)
Includes 1,158,953 shares issuable upon exercise of pre-funded warrants. The pre-funded warrants cannot be exercised to the extent such
exercise would result in the holder beneficially owning more than 4.99% of the Company&rsquo;s common stock. The ownership amount in
the table does not give effect to such beneficial ownership limitation.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_007"></A>PLAN
OF DISTRIBUTION</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
selling stockholder and any of its pledgees, assignees and successors-in-interest may, from time to time, sell any or all of its securities
covered hereby on the Nasdaq Capital Market or any other stock exchange, market or trading facility on which the securities are traded
or in private transactions. These sales may be at fixed or negotiated prices. The selling stockholder may use any one or more of the
following methods when selling securities:</FONT></P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">ordinary
                                            brokerage transactions and transactions in which the broker-dealer solicits purchasers;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">block
                                            trades in which the broker-dealer will attempt to sell the securities as agent but may position
                                            and resell a portion of the block as principal to facilitate the transaction;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">purchases
                                            by a broker-dealer as principal and resale by the broker-dealer for its account;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in">&#9679;</TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">an
                                            exchange distribution in accordance with the rules of the applicable exchange;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in">&#9679;</TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">privately
                                            negotiated transactions;</FONT></TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<P STYLE="margin-top: 0; margin-bottom: 0"></P>

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<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in">&#9679;</TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">settlement
                                            of short sales;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in">&#9679;</TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">in
                                            transactions through broker-dealers that agree with the selling stockholder to sell a specified
                                            number of such securities at a stipulated price per security;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in">&#9679;</TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">through
                                            the writing or settlement of options or other hedging transactions, whether through an options
                                            exchange or otherwise;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in">&#9679;</TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">a
                                            combination of any such methods of sale; or</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in">&#9679;</TD><TD STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">any
                                            other method permitted pursuant to applicable law.</FONT></TD></TR></TABLE>

<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
selling stockholder may also sell securities under Rule 144 or any other exemption from registration under the Securities Act of 1933,
as amended, or the Securities Act, if available, rather than under this prospectus.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Broker-dealers
engaged by the selling stockholder may arrange for other brokers-dealers to participate in sales. Broker-dealers may receive commissions
or discounts from the selling stockholder (or, if any broker-dealer acts as agent for the purchaser of securities, from the purchaser)
in amounts to be negotiated, but, except as set forth in a supplement to this prospectus, in the case of an agency transaction not in
excess of a customary brokerage commission in compliance with FINRA Rule 2121; and in the case of a principal transaction a markup or
markdown in compliance with FINRA Rule 2121.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">In
connection with the sale of the securities or interests therein, the selling stockholder may enter into hedging transactions with broker-dealers
or other financial institutions, which may in turn engage in short sales of the securities in the course of hedging the positions they
assume. The selling stockholder may also sell securities short and deliver these securities to close out its short positions, or loan
or pledge the securities to broker-dealers that in turn may sell these securities. The selling stockholder may also enter into option
or other transactions with broker-dealers or other financial institutions or create one or more derivative securities which require the
delivery to such broker-dealer or other financial institution of securities offered by this prospectus, which securities such broker-dealer
or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction).</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
selling stockholder and any broker-dealers or agents that are involved in selling the securities may be deemed to be &ldquo;underwriters&rdquo;
within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers
or agents and any profit on the resale of the securities purchased by them may be deemed to be underwriting commissions or discounts
under the Securities Act. The selling stockholder has informed the Company that it does not have any written or oral agreement or understanding,
directly or indirectly, with any person to distribute the securities.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
Company is required to pay certain fees and expenses incurred by the Company incident to the registration of the securities. The Company
has agreed to indemnify the selling stockholder against certain losses, claims, damages and liabilities, including liabilities under
the Securities Act.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">We
agreed to keep this prospectus effective until (i) the date on which the securities may be resold by the selling stockholder without
registration and without regard to any volume or manner-of-sale limitations by reason of Rule 144 without the requirement for the Company
to be in compliance with the current public information under Rule 144 under the Securities Act or any other rule of similar effect or
(ii) all of the securities have been sold pursuant to this prospectus or Rule 144 under the Securities Act or any other rule of similar
effect. The resale securities will be sold only through registered or licensed brokers or dealers if required under applicable state
securities laws. In addition, in certain states, the resale securities covered hereby may not be sold unless they have been registered
or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is
complied with.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Under
applicable rules and regulations under the Securities Exchange Act of 1934, as amended, or the Exchange Act, any person engaged in the
distribution of the resale securities may not, subject to certain exceptions, simultaneously engage in market making activities with
respect to the common stock for the applicable restricted period, as defined in Regulation M, prior to the commencement of the distribution.
In addition, the selling stockholder will be subject to applicable provisions of the Exchange Act and the rules and regulations thereunder,
including Regulation M, which may limit the timing of purchases and sales of the common stock by the selling stockholder or any other
person. We will make copies of this prospectus available to the selling stockholder and have informed it of the need to deliver a copy
of this prospectus to each purchaser at or prior to the time of the sale (including by compliance with Rule 172 under the Securities
Act).</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_008"></A>LEGAL
MATTERS</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
validity of the shares of common stock offered in this prospectus has been passed upon for us by Sichenzia Ross Ference Carmel LLP, New
York, New York.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_009"></A>EXPERTS</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
consolidated financial statements of Shuttle Pharmaceuticals Holdings, Inc. as of and for the years ended December 31, 2024 and 2023
incorporated by reference in this prospectus and in the registration statement of which this prospectus forms a part, have been so incorporated
in reliance on the report of Forvis Mazars, LLP, an independent registered public accounting firm. Such consolidated financial statements
have been incorporated herein in reliance upon such report given on the authority of such firm as experts in accounting and auditing.
The report of Forvis Mazars, LLP contains an explanatory paragraph regarding substantial doubt about the Company&rsquo;s ability to continue
as a going concern.</FONT></P>

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


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_010"></A>INFORMATION
INCORPORATED BY REFERENCE</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
SEC allows us to &ldquo;incorporate by reference&rdquo; information that we file with them. Incorporation by reference allows us to disclose
important information to you by referring you to those other documents. The information incorporated by reference is an important part
of this prospectus, and information that we file later with the SEC will automatically update and supersede this information. We filed
a registration statement on Form S-1 under the Securities Act with the SEC with respect to the securities being offered pursuant to this
prospectus. This prospectus omits certain information contained in the registration statement, as permitted by the SEC. You should refer
to the registration statement, including the exhibits and schedules attached to the registration statement and the information incorporated
by reference, for further information about us and the securities being offered pursuant to this prospectus. The documents we are incorporating
by reference into this prospectus are:</FONT></P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9679;</FONT></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our
                                            Annual Report on <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225008300/form10-k.htm" STYLE="-sec-extract: exhibit">Form
                                            10-K</A> for the fiscal year ended December 31, 2024, filed with the SEC on February 26,
                                            2025;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">&#9679;</FONT></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our
                                            Quarterly Report on <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225009325/form10-q.htm" STYLE="-sec-extract: exhibit">Form
                                            10-Q</A> for the quarterly period ended March 31, 2025, filed with the SEC on May 8, 2025;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">&#9679;</FONT></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our
                                            Current Reports on Form 8-K filed with the SEC on <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225001132/form8-k.htm" STYLE="-sec-extract: exhibit">January
                                            7, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225002945/form8-k.htm" STYLE="-sec-extract: exhibit">January
                                            21, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225003985/form8-k.htm" STYLE="-sec-extract: exhibit">January
                                            28, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225008462/form8-k.htm" STYLE="-sec-extract: exhibit">February
                                            27, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225008742/form8-k.htm" STYLE="-sec-extract: exhibit">February
                                            28, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225009922/form8-k.htm" STYLE="-sec-extract: exhibit">March
                                            12, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315225010211/form8-k.htm" STYLE="-sec-extract: exhibit">March
                                            13, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225000595/form8-k.htm" STYLE="-sec-extract: exhibit">March
                                            25, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225001880/form8-k.htm" STYLE="-sec-extract: exhibit">March
                                            31, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225002757/form8-k.htm" STYLE="-sec-extract: exhibit">April
                                            4, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225003603/form8-k.htm" STYLE="-sec-extract: exhibit">April
                                            10, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225005553/form8-k.htm" STYLE="-sec-extract: exhibit">April
                                            21, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225010964/form8-k.htm" STYLE="-sec-extract: exhibit">May
                                            15, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225012536/form8-k.htm" STYLE="-sec-extract: exhibit">May
                                            28, 2025</A>, <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225016394/form8-k.htm" STYLE="-sec-extract: exhibit">June
                                            25, 2025,</A>  and <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000164117225021566/form8-k.htm" STYLE="-sec-extract: exhibit">July 30, 2025</A>; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">&#9679;</FONT></TD><TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The
                                            description of our common stock contained in our Registration Statement on <A HREF="https://www.sec.gov/Archives/edgar/data/1757499/000149315222024265/form8a12b.htm" STYLE="-sec-extract: exhibit">Form
                                            8-A</A>, registering our common stock under Section 12(b) under the Exchange Act, filed with
                                            the SEC on August 29, 2022 (File No. 001-41488).</FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">All
documents subsequently filed by us with the SEC under Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act (other than current reports
on Form 8-K furnished pursuant to Item 2.02 or Item 7.01 of Form 8-K, including any exhibits included with such information, unless otherwise
indicated therein) prior to the termination or completion of the offering made pursuant to this prospectus are also incorporated herein
by reference and will automatically update and supersede information contained or incorporated by reference in this prospectus.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">You
may request a copy of these filings, at no cost, by writing or telephoning us at the following address: 401 Professional Drive, Suite
260, Gaithersburg, MD 20879, (240) 430-4212.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B><A NAME="a_011"></A>WHERE
YOU CAN FIND MORE INFORMATION</B></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">We
have filed with the SEC a registration statement on Form S-1 under the Securities Act with respect to the securities offered hereby.
This prospectus, which constitutes a part of the registration statement, does not contain all of the information set forth in the registration
statement or the exhibits and schedules filed therewith. For further information about us and our securities offered hereby, we refer
you to the registration statement and the exhibits and schedules filed therewith. Statements contained in this prospectus regarding the
contents of any contract or any other document that is filed as an exhibit to the registration statement are not necessarily complete,
and each such statement is qualified in all respects by reference to the full text of such contract or other document filed as an exhibit
to the registration statement. The SEC maintains a website that contains reports, proxy and information statements and other information
regarding registrants that file electronically with the SEC. The address is www.sec.gov.</FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">We
are subject to the reporting requirements of the Exchange Act, and file annual, quarterly and current reports, proxy statements and other
information with the SEC. You can read our SEC filings, including the registration statement, over the Internet at the SEC&rsquo;s website<I>.
</I>We also maintain a website at www.shuttlepharma.com, at which you may access these materials free of charge as soon as reasonably
practicable after they are electronically filed with, or furnished to, the SEC. The information contained in, or that can be accessed
through, our website is not part of this prospectus.</FONT></P>

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


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