Mesoblast (NASDAQ: MESO) details ASX Appendix 3G on unquoted equity

Rhea-AI Filing Summary

Mesoblast Limited submitted a foreign issuer report describing an action first disclosed on the Australian Securities Exchange. On December 17, 2025, the company lodged an Appendix 3G with the ASX, which relates to a new issue announcement and the issue, conversion or payment up of unquoted equity securities. This Appendix 3G document is attached to the report as an exhibit and is incorporated by reference for further details.

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934

For the month of December 2025

Commission File Number 001-37626

Mesoblast Limited

(Exact name of Registrant as specified in its charter)

Not Applicable

(Translation of Registrant’s name into English)

Australia
(Jurisdiction of incorporation or organization)

Silviu Itescu

Chief Executive Officer and Executive Director

Level 38

55 Collins Street

Melbourne 3000

Australia

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F:

Form 20-F ☑ Form 40-F ☐

INFORMATION CONTAINED ON THIS REPORT ON FORM 6-K

On December 17, 2025, Mesoblast Limited filed with the Australian Securities Exchange a new issue announcement, notification of issue, conversion or payment up of unquoted equity securities (Appendix 3G) which is attached hereto as Exhibit 99.1, and is incorporated herein by reference.

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, thereunto duly organized.

Mesoblast Limited

/s/ Niva Sivakumar

Niva Sivakumar

Company Secretary

Dated: December 17, 2025

INDEX TO EXHIBITS

Item
99.1						Appendix 3G of Mesoblast Ltd, dated December 17, 2025.

FAQ

What does Mesoblast (MESO) report in this Form 6-K?

Mesoblast Limited reports that it filed an Appendix 3G with the Australian Securities Exchange on December 17, 2025, concerning unquoted equity securities.

What is Appendix 3G mentioned in Mesoblast's Form 6-K?

Appendix 3G is a new issue announcement and notification of issue, conversion or payment up of unquoted equity securities filed by Mesoblast Limited with the ASX.

When did Mesoblast (MESO) file the Appendix 3G with the ASX?

Mesoblast Limited filed the Appendix 3G with the Australian Securities Exchange on December 17, 2025.

Where can investors find the details of Mesoblast's unquoted equity securities?

The details are contained in the Appendix 3G, which is attached as Exhibit 99.1 to the report and incorporated by reference.

Who signed Mesoblast's December 2025 Form 6-K?

The report was signed on behalf of Mesoblast Limited by Niva Sivakumar, the Company Secretary.