Mesoblast (NASDAQ: MESO) director-linked entities add 8.3M shares

Rhea-AI Filing Summary

Mesoblast Ltd director and 10% owner George Gregory, through accounts held by Grant George and James George over which he has power of attorney, reported open-market purchases totalling 8,305,962 Ordinary Shares of Mesoblast.

Individual transactions on April 4, April 9 and April 10, 2026 ranged from 4,000,000 shares at $1.42 per share to smaller blocks around $14.10–$14.40 per share. Following these purchases, the reported indirect holdings in the various accounts increased, with the largest shown position reaching 13,586,890 Ordinary Shares. The Ordinary Shares are represented by American Depositary Shares, with each ADS corresponding to a beneficial interest in 10 Ordinary Shares.

Positive

• Significant insider buying: Entities associated with director and 10% owner George Gregory purchased 8,305,962 Mesoblast Ordinary Shares in open-market transactions, increasing reported indirect holdings without any corresponding sales in this filing.

Negative

• None.

Insights

Equity markets analyst

Director-linked entities disclosed net open-market purchases of 8.3M Mesoblast shares.

The filing shows entities associated with director and 10% holder George Gregory executing multiple open-market purchases of Mesoblast Ordinary Shares, totalling 8,305,962 shares across several dates and price points. All transactions are coded as purchases, with no offsetting sales.

Because these are open-market buys rather than option exercises or grants, they generally signal increased exposure to the equity. However, the filing does not provide the company’s total shares outstanding, so the exact proportional impact of these purchases on Mesoblast’s ownership structure cannot be gauged from this data alone.

Insider Trade Summary

Net Buyer: 8,305,962 shares ($26,135,093)

Net Buy 15 txns

Insider George Gregory

Role Director, 10% Owner

Bought 8,305,962 shs ($26.14M)

Type	Security	Shares	Price	Value
Purchase	Ordinary Shares	2,324,072	$1.48	$3.44M
Purchase	Ordinary Shares	886,890	$1.43	$1.27M
Purchase	Ordinary Shares	500,000	$14.39	$7.20M
Purchase	Ordinary Shares	500,000	$14.39	$7.20M
Purchase	Ordinary Shares	10,000	$14.40	$144K
Purchase	Ordinary Shares	4,760	$14.40	$69K
Purchase	Ordinary Shares	20,000	$14.30	$286K
Purchase	Ordinary Shares	10,000	$14.30	$143K
Purchase	Ordinary Shares	5,240	$14.25	$75K
Purchase	Ordinary Shares	10,000	$14.25	$143K
Purchase	Ordinary Shares	5,000	$14.30	$72K
Purchase	Ordinary Shares	10,000	$14.30	$143K
Purchase	Ordinary Shares	10,000	$14.30	$143K
Purchase	Ordinary Shares	10,000	$14.10	$141K
Purchase	Ordinary Shares	4,000,000	$1.42	$5.68M

Holdings After Transaction: Ordinary Shares — 8,324,072 shares (Indirect, Held by Grant George, who has granted power of attorney to Dr. George.)

Footnotes (1)

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Key Figures

Total shares purchased: 8,305,962 Ordinary Shares Largest single trade size: 4,000,000 Ordinary Shares Price range of trades: $1.42–$14.40 per share +2 more

5 metrics

Total shares purchased 8,305,962 Ordinary Shares Net open-market purchases reported in this Form 4

Largest single trade size 4,000,000 Ordinary Shares Purchase on April 4, 2026 at $1.42 per share

Price range of trades $1.42–$14.40 per share Open-market Ordinary Share purchases in April 2026

Indirect holdings in one account 13,586,890 Ordinary Shares Total shares following one series of April 9, 2026 trades

ADS to Ordinary Share ratio 1 ADS : 10 Ordinary Shares Representation of Mesoblast Ordinary Shares via ADSs

Key Terms

open-market purchase, American Depositary Shares, power of attorney, non-derivative, +1 more

5 terms

open-market purchase financial

"transaction_action": "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

American Depositary Shares financial

"Ordinary Shares are represented by American Depositary Shares. Each ADS"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

power of attorney financial

"Held by Grant George, who has granted power of attorney to Dr. George."

A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.

non-derivative financial

""transaction_type": "non-derivative""

10% owner financial

""is_ten_percent_owner": 1"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

George Gregory

(Last) (First) (Middle)

LEVEL 38, 55 COLLINS STREET

(Street)

MELBOURNE VICTORIA 33602

(City) (State) (Zip)

AUSTRALIA

(Country)

2. Issuer Name and Ticker or Trading Symbol
MESOBLAST LTD [ MESO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/09/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	04/04/2026		P		4,000,000	A	$1.42	12,000,000	I	Held by James George, who has granted power of attorney to Dr. George.
Ordinary Shares	04/09/2026		P		886,890	A	$1.43	12,886,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		500,000	A	$14.39	13,491,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		500,000	A	$14.39	13,491,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		10,000	A	$14.4	13,501,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		4,760	A	$14.4	13,506,650	I	As above.
Ordinary Shares(1)	04/09/2026		P		20,000	A	$14.3	13,526,650	I	As above.
Ordinary Shares(1)	04/09/2026		P		10,000	A	$14.3	13,536,650	I	As above.
Ordinary Shares(1)	04/09/2026		P		5,240	A	$14.25	13,541,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		10,000	A	$14.25	13,551,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		5,000	A	$14.3	13,556,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		10,000	A	$14.3	13,566,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		10,000	A	$14.3	13,576,890	I	As above.
Ordinary Shares(1)	04/09/2026		P		10,000	A	$14.1	13,586,890	I	As above.
Ordinary Shares	04/10/2026		P		2,324,072	A	$1.48	8,324,072	I	Held by Grant George, who has granted power of attorney to Dr. George.

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Such Ordinary Shares are represented by American Depositary Shares. Each ADS represents a beneficial interest in 10 ordinary shares.

Remarks:

Prices are indicated using "A$" for Australian Dollars and "US$" for US Dollars.

	/s/ Gregory George	04/09/2026
	** Signature of Reporting Person	Date
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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider activity did Mesoblast (MESO) report for George Gregory?

The filing shows entities associated with director and 10% owner George Gregory made open-market purchases of 8,305,962 Mesoblast Ordinary Shares. These transactions increased reported indirect holdings across several accounts without any corresponding share sales in this Form 4.

On what dates did the Mesoblast (MESO) insider share purchases occur?

The reported open-market purchases of Mesoblast Ordinary Shares occurred on April 4, April 9, and April 10, 2026. Multiple trades were executed on April 9 at different prices and sizes, all classified as non-derivative common share purchases.

What prices were paid for the Mesoblast (MESO) Ordinary Shares bought?

The insider-related entities bought Mesoblast Ordinary Shares at prices ranging from $1.42 per share up to about $14.40 per share. The largest block was 4,000,000 shares at $1.42, while many smaller trades clustered around $14.10–$14.40 per share.

How many Mesoblast (MESO) shares did entities linked to George Gregory hold after the trades?

After the reported transactions, one of the indirect accounts associated with George Gregory showed 13,586,890 Mesoblast Ordinary Shares, while another showed 8,324,072 shares. These figures reflect separate indirect holdings rather than a combined total position.

How are Mesoblast (MESO) Ordinary Shares represented for U.S. investors?

The Form 4 notes that Mesoblast Ordinary Shares are represented by American Depositary Shares (ADSs). Each ADS corresponds to a beneficial interest in 10 Ordinary Shares, providing a standard mechanism for trading the company’s equity in U.S. markets.