Mesoblast Limited
Mesoblast Limited (MESO) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MESO · as of Mar 31, 2025
Ownership Breakdown
75
Institutional Holders
▲ 6 vs Q4
$49.25M
Total Inst. Value
▼ $10.82M vs Q4
128.69M
Shares Outstanding
freeFloat 64.80%
3.95M
13F Shares Held
▲ 772,236 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MESO largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. biological products, (no diagnostic substances) | 714.9K | 6.26% | 6.26% | $8.92B | May 2, 2025 | ▼ 12.3K |
MORGAN STANLEY biological products, (no diagnostic substances) | 544.6K | 4.77% | 4.77% | $6.80B | May 15, 2025 | ▲ 142.2K |
CITADEL ADVISORS LLC biological products, (no diagnostic substances) | 486.8K | 4.27% | 4.27% | $6.08B | May 15, 2025 | ▲ 486.8K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP biological products, (no diagnostic substances) | 260.9K | 2.29% | 2.29% | $3.26B | May 14, 2025 | ▲ 107.0K |
GOLDMAN SACHS GROUP INC biological products, (no diagnostic substances) | 257.1K | 2.25% | 2.25% | $3.21B | Jun 27, 2025 | NEW |
SUSQUEHANNA INTERNATIONAL GROUP, LLP biological products, (no diagnostic substances) | 240.8K | 2.11% | 2.11% | $3.01B | May 14, 2025 | ▲ 92.2K |
SUMMIT X, LLC biological products, (no diagnostic substances) | 198.2K | 1.74% | 1.74% | $2.47B | May 2, 2025 | ▲ 52.5K |
GROUP ONE TRADING, L.P. biological products, (no diagnostic substances) | 151.2K | 1.33% | 1.33% | $1.89B | May 14, 2025 | ▲ 151.2K |
CITADEL ADVISORS LLC biological products, (no diagnostic substances) | 150.9K | 1.32% | 1.32% | $1.88B | May 15, 2025 | ▼ 137.9K |
TORONTO DOMINION BANK biological products, (no diagnostic substances) | 150.0K | 1.31% | 1.31% | $1.87B | May 15, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
21
Increased
+1.21M shares9
New Positions
first time holders12
Decreased
−814.7K shares0
Sold Out
fully exitedNet shares change (top 50)
+397.9K
+1.21M / −814.7K
Net new holders
+18
9 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MESO insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
George Gregory
| Apr 9, 2026 | Purchase | 10,000 | $1.41 | $14.1K | 13.59M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 10,000 | $1.43 | $14.3K | 13.58M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 10,000 | $1.43 | $14.3K | 13.57M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 5,000 | $1.43 | $7.2K | 13.56M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 10,000 | $1.43 | $14.3K | 13.55M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 5,240 | $1.43 | $7.5K | 13.54M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 10,000 | $1.43 | $14.3K | 13.54M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 20,000 | $1.43 | $28.6K | 13.53M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 4,760 | $1.44 | $6.9K | 13.51M | Form 4 ↗ |
George Gregory
| Apr 9, 2026 | Purchase | 10,000 | $1.44 | $14.4K | 13.50M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Mesoblast Limited (MESO) is primarily owned by institutional investors, who hold approximately 3.1% of total shares outstanding. Company insiders own approximately 35.20%, while retail and public investors account for the remaining 61.73%.
The largest institutional shareholder of Mesoblast Limited is BLACKROCK, INC., holding approximately 714,928 shares — equal to 6.26% of outstanding shares — as of March 31, 2025.
A total of 75 institutional investors currently hold MESO stock, with a combined institutional value of approximately $49,245,975 as of the most recent 13F filing period.
Frequently asked questions
MESO ownershipMesoblast Limited (MESO) is primarily owned by institutional investors, who hold approximately 3.1% of shares. The largest shareholder is BLACKROCK, INC. with a 6.26% stake. Company insiders hold 35.20%. Data sourced from SEC Form 13F as of March 31, 2025.