Filed
pursuant to Rule 424(b)(3)
Registration
No. 333-292013
Prospectus
Supplement No. 3
(To
Prospectus dated August 11, 2026)
94,046,357
Shares of Common Stock

Advasa
Holdings, Inc
This prospectus supplement No. 3 amends and
supplements the prospectus dated August 11, 2026, as updated and supplemented by prospectus supplement No. 1 dated August 12, 2026 and
prospectus supplement No. 2 dated August 25, 2026, filed by Advasa Holdings,
Inc. (the “Company,” “we,” “us,” “our,” or “ours”), relating to the resale
of up to 94,046,357 shares of our common stock with a par value of $0.00001 per share (the “Common Stock”) by our stockholders
identified in the prospectus (the “Registered Stockholders”) in connection with our direct listing (the “Direct Listing”)
on the Nasdaq Global Market (“Nasdaq”).
The
foregoing prospectus, together with this prospectus supplement are collectively referred to as the “prospectus.” Please keep
this prospectus supplement with your prospectus for future reference.
This
prospectus supplement is being filed to update and supplement the information in the prospectus with the information contained in our
Periodic Report filed with the Securities and Exchange Commission on September 2, 2026 (the “Periodic Report”). Accordingly,
we have attached the Periodic Report to this prospectus supplement.
This
prospectus supplement is not complete without the prospectus, including any supplements and amendments thereto. This prospectus supplement
should be read in conjunction with the prospectus which is to be delivered with this prospectus supplement. This prospectus supplement
is qualified by reference to the prospectus, except to the extent that the information in this prospectus supplement updates or supersedes
the information contained in the prospectus, including any supplements and amendments thereto.
Investing
in our Common Stock involves a high degree of risk. Before buying any shares, you should carefully read the discussion of the material
risks of investing in our Common Stock under the heading “Risk Factors” in this prospectus.
Neither
the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these
securities or passed on the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.
Capitalized
terms contained in this prospectus supplement have the same meanings as in the prospectus unless otherwise stated herein.
The
date of this prospectus is September 2, 2026
Index
of SEC Filings
The
following report listed below is filed as a part of this prospectus supplement No. 3.
Appendix
No. |
|
Description |
| |
|
|
| Appendix
1 |
|
Periodic Report on Form 8-K filed with the Securities and Exchange Commission on September 2, 2026. |
Appendix
1
UNITED
STATES
SECURITIES
AND EXCHANGE COMMISSION
Washington,
D.C. 20549
FORM
8-K
CURRENT
REPORT
PURSUANT
TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Date
of report (Date of earliest event reported):
September 2, 2026 (August
27, 2026)
ADVASA
HOLDINGS, INC.
(Exact
Name of Registrant as Specified in Its Charter)
Delaware
(State
or Other Jurisdiction of Incorporation)
| 001-43445 |
|
39-3819559 |
(Commission
File
Number) |
|
(IRS
Employer
Identification
No.) |
| 1-2-7
Moto-Akasake, Minato-ku, Tokyo, Japan |
|
107-0051 |
| (Address
of Principal Executive Offices) |
|
(Zip
Code) |
+81-3-6868-5538
(Registrant’s
Telephone Number, Including Area Code)
N/A
(Former
Name or Former Address, if Changed Since Last Report)
Check
the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under
any of the following provisions (see General Instruction A.2. below):
| ☐ |
Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| |
|
| ☐ |
Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| |
|
| ☐ |
Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| |
|
| ☐ |
Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
Securities
registered pursuant to Section 12(b) of the Act:
| Title
of each class |
|
Trading
Symbols |
|
Name
of each exchange on which registered |
| Common
Stock, par value $0.00001 |
|
ADBT |
|
The
Nasdaq Stock Market LLC |
Indicate
by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405)
or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).
Emerging
growth company ☒
If
an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying
with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 5.02. Departure of Directors or Certain Officers;
Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
Resignation of Chief Financial Officer
On August 27, 2026, Katharyn Field, the Chief Financial
Officer (principal financial and accounting officer) of Advasa Holdings, Inc. (the “Company”), formally resigned her position
as Chief Financial Officer (principal financial and accounting officer) and advised the Company that her resignation was due to personal
reasons and not a result of any dispute or disagreement with the Company, its management, or its board of directors.
Appointment of Interim Chief Financial Officer
The Company has commenced a search for a new Chief
Financial Officer (principal financial and accounting officer). In the meantime, Mr. Grady Ryther, the Company’s Chief Executive
Officer, will serve as the Company’s Interim Chief Financial Officer (principal financial and accounting officer), effective immediately,
until a permanent successor is appointed.
SIGNATURES
Pursuant
to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned hereunto duly authorized.
| Dated:
September 2, 2026 |
Advasa
Holdings, Inc. |
| |
|
|
| |
By: |
/s/
Grady Ryther |
| |
Name: |
Grady
Ryther |
| |
Title: |
Chief
Executive Officer |