Company: RGBP
Filing Date: 2025-02-24
Form Type: 253G1
Source: 0001493152-25-008067
Chunk: 0

Company: Regen BioPharma Inc
Filing Date: 2025-02-24
Form: 253G1
Chunk 0
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Filed Pursuant to Rule
253(g)(1)

File Number: 024-12505

<div align='center'>OFFERING CIRCULAR SUPPLEMENT NO. 1

Date of Qualification
of the Offering Circular: December 10, 2024

Supplement dated February
24, 2025</div>

This document (the “Supplement”) supplements
the Offering Statement filed on Form 1-A of Regen Biopharma, Inc. (the “Company”), originally filed on September 16, 2024
and amended on November 21,2024 (the “Offering Circular”) relating to the offer and sale by us of 10,000,000 shares of our
common stock . Any inconsistent information made by us in a previous offering circular supplement or post-qualification amendment is
modified or superseded by the information contained in this Supplement. Unless otherwise defined in this Supplement, capitalized terms
used herein shall have the same meanings as set forth in the Offering Circular, including the disclosures incorporated by reference therein.

The purpose of this supplement is to provide
a list of the States where the Offering has been registered:

Colorado registered as of December 10, 2024

Delaware registered as of January 3, 2025

New York registered as of January 8, 2025

SEC Disclaimer

An offering statement regarding the offering described
in the Offering Circular has been filed with the Commission. The Commission has qualified that offering statement, which
only means that the Company may make sales of the securities described by that offering statement. It does not mean that the Commission
has approved, passed upon the merits, or passed upon the accuracy or completeness of the information in the offering statement. You should
read the Offering Circular before making any investment.

This Supplement to the Offering Circular does
not otherwise modify or update disclosure in, or exhibits to, the original Offering Circular. This Supplement to the Offering Circular
should be read in conjunction with the Offering Circular and is qualified by reference to the Offering Circular except to the extent
that the information contained herein supplements the information contained in the Offering Circular.

This Offering Circular shall not constitute
an offer to sell or the solicitation of an offer to buy nor there would any sales of these securities in any state in which such
offer, solicitation or sale be unlawful before registration or qualification under the laws of any such state.

| OFFERING 
 CIRCULAR | ACCREDITED     
 INVESTORS ONLY |

<div align='center'>RE