James Michael O'Brien - 07 Jul 2026 Form 4 Insider Report for MESOBLAST LTD (MESO)

Reporting relationship: Chief Financial Officer
Issuer ticker: MESO
Reported as of: 07 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 09 Jul 2026, 21:54:11 UTC
Prior SEC filing: 18 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ James Michael O'Brien

Key filing fact

James Michael O'Brien filed Form 4 for MESOBLAST LTD (MESO) on 09 Jul 2026.

Key facts

This page summarizes James Michael O'Brien's Form 4 filing for MESOBLAST LTD (MESO).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 09 Jul 2026, 21:54.

Change

Previous filing in this sequence was filed on 18 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002120836 Primary reporting owner

OBRIEN JAMES MICHAEL

Relationship: Chief Financial Officer
Address: LEVEL 38, 55 COLLINS STREET, MELBOURNE, AUSTRALIA
Signature: /s/ James Michael O'Brien
Signature date: 09 Jul 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MESO transaction Derivative

Option (Right to buy)

Award

Transaction value
Shares: +650,000
Change %
Price: $0.000000^*
Shares after: 650,000
Date: 23 Dec 2025
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 650,000
Exercise price: $2.90
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The exercise price for options is in Australian dollars.

Footnote F2

Granted on December 23, 2025. Vesting is dependent on Mr. O'Brien achieving certain milestones

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