# EDGAR Filing Document

**Accession Number:** 0001345099
**File Stem:** 0001213900-26-037945
**Filing Date:** 2026-4
**Character Count:** 5866
**Document Hash:** bbf2af1bfc6a0258426e4463b8409456
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-037945.hdr.sgml**: 20260401

**ACCESSION NUMBER**: 0001213900-26-037945

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260318

**FILED AS OF DATE**: 20260401

**DATE AS OF CHANGE**: 20260401

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Itescu Silviu
- **CENTRAL INDEX KEY:** 0001666835

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37626
- **FILM NUMBER:** 26824587

**MAIL ADDRESS:**
- **STREET 1:** LEVEL 38
- **STREET 2:** 55 COLLINS STREET
- **CITY:** MELBOURNE
- **STATE:** C3
- **ZIP:** 3000
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MESOBLAST LTD
- **CENTRAL INDEX KEY:** 0001345099
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** C3
- **FISCAL YEAR END:** 0630

**BUSINESS ADDRESS:**
- **STREET 1:** LEVEL 38
- **STREET 2:** 55 COLLINS STREET
- **CITY:** MELBOURNE, VICTORIA
- **STATE:** C3
- **ZIP:** 3000
- **BUSINESS PHONE:** 613 9639 6036

**MAIL ADDRESS:**
- **STREET 1:** LEVEL 38
- **STREET 2:** 55 COLLINS STREET
- **CITY:** MELBOURNE, VICTORIA
- **STATE:** C3
- **ZIP:** 3000

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Itescu Silviu<br><sub>(Last) (First) (Middle)</sub><br>LEVEL 38<br>55 COLLINS STREET<br><sub>(Street)</sub><br>MELBOURNE, VICTORIA, AUSTRALIA 3000<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>MESOBLAST LTD [ MESO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-03-18 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_CEO and Managing Director_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Ordinary Shares | 67756838 | D |  |
| Ordinary Shares | 8821137 | I | Owned by Josaka Investments Pty Ltd, the trustee of Dr. Itescu's self-managed superannuation fund |
| Ordinary Shares | 2380953 | I | Owned by Tamit Nominees Pty Ltd, an Australian corporation owned by Dr. Itescu |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Option (right to buy) | <sup>(1)</sup> | 2026-07-19 | Ordinary Shares | 673333 | $1.45 | D |  |
| Option (right to buy) | <sup>(2)</sup> | 2032-08-25 | Ordinary Shares | 75600 | $2.46 | D |  |
| Option (right to buy) | <sup>(3)</sup> | 2028-09-07 | Ordinary Shares | 930000 | $1.75 | D |  |
| Option (right to buy) | <sup>(4)</sup> | 2029-10-16 | Ordinary Shares | 1395000 | $1.01 | D |  |
| Option (right to buy) | <sup>(5)</sup> | 2030-10-15 | Ordinary Shares | 806666 | $0.35 | D |  |
| Option (right to buy) | <sup>(6)</sup> | 2031-08-26 | Ordinary Shares | 2072000 | $0.97 | D |  |
| Option (right to buy) | <sup>(7)</sup> | 2032-08-25 | Ordinary Shares | 1950000 | $2.46 | D |  |

---

### Footnotes:

(1) Granted on July 20, 2019. Vesting is dependent on Mr. Itescu achieving certain milestones.

(2) Granted on August 26, 2025. These options will vest on August 26, 2026.

(3) Granted on September 8, 2021. Vesting is dependent on Mr. Itescu achieving certain milestones.

(4) Granted on October 17, 2022. Vesting is dependent on Mr. Itescu achieving certain milestones.

(5) Granted on October 16, 2023. Vesting is dependent on Mr. Itescu achieving certain milestones.

(6) Granted on August 27, 2024. Vesting is dependent on Mr. Itescu achieving certain milestones.

(7) Granted on August 26, 2025. Vesting is dependent on Mr. Itescu achieving certain milestones.

**Remarks:**
1. All exercise prices are in Australian dollars.

**Signature:** /s/ Silviu Itescu  
**Date:** 2026-04-01

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**