Ticker · CUSIP 590717401
Holders (tracked)
6
Combined shares
751,549
Combined value
$13.56M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
SEC event timeline
30 events
- George Gregory2026-04-10Bought $3.44M @ $1.48Insider buy
- George Gregory2026-04-10Bought $3.44M @ $1.48Insider buy
- George Gregory2026-04-09Bought $1.27M @ $1.43Insider buy
- George Gregory2026-04-09Bought $153.3K @ $1.46Insider buy
- George Gregory2026-04-09Bought $720.0K @ $1.44Insider buy
- George Gregory2026-04-09Bought $14.4K @ $1.44Insider buy
- George Gregory2026-04-09Bought $6.9K @ $1.44Insider buy
- George Gregory2026-04-09Bought $28.6K @ $1.43Insider buy
- George Gregory2026-04-09Bought $14.3K @ $1.43Insider buy
- George Gregory2026-04-09Bought $7.5K @ $1.43Insider buy
- George Gregory2026-04-09Bought $14.3K @ $1.43Insider buy
- George Gregory2026-04-09Bought $7.2K @ $1.43Insider buy
- George Gregory2026-04-09Bought $14.3K @ $1.43Insider buy
- George Gregory2026-04-09Bought $14.3K @ $1.43Insider buy
- George Gregory2026-04-09Bought $14.1K @ $1.41Insider buy
- George Gregory2026-04-09Bought $1.27M @ $1.43Insider buy
- George Gregory2026-04-09Bought $7.20M @ $14.39Insider buy
- George Gregory2026-04-09Bought $7.20M @ $14.39Insider buy
- George Gregory2026-04-09Bought $144.0K @ $14.40Insider buy
- George Gregory2026-04-09Bought $68.5K @ $14.40Insider buy
- George Gregory2026-04-09Bought $286.0K @ $14.30Insider buy
- George Gregory2026-04-09Bought $143.0K @ $14.30Insider buy
- George Gregory2026-04-09Bought $74.7K @ $14.25Insider buy
- George Gregory2026-04-09Bought $142.5K @ $14.25Insider buy
- George Gregory2026-04-09Bought $71.5K @ $14.30Insider buy
- George Gregory2026-04-09Bought $143.0K @ $14.30Insider buy
- George Gregory2026-04-09Bought $143.0K @ $14.30Insider buy
- George Gregory2026-04-09Bought $141.0K @ $14.10Insider buy
- George Gregory2026-04-04Bought $5.68M @ $1.42Insider buy
- George Gregory2026-04-04Bought $5.68M @ $1.42Insider buy
Insider activity
Last 30 days
Net (open-market)
$37.53M
Buys
30 · $37.53M
Sells
0 · $0
Unique insiders
1
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-10 | George Gregory Director, 10%+ | P | 2,324,072 | $1.48 | $3.44M |
| 04-10 | George Gregory Director, 10%+ | P | 2,324,072 | $1.48 | $3.44M |
| 04-09 | George Gregory Director, 10%+ | P | 886,890 | $1.43 | $1.27M |
| 04-09 | George Gregory Director, 10%+ | P | 500,000 | $14.39 | $7.20M |
| 04-09 | George Gregory Director, 10%+ | P | 500,000 | $14.39 | $7.20M |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $14.40 | $144.0K |
| 04-09 | George Gregory Director, 10%+ | P | 4,760 | $14.40 | $68.5K |
| 04-09 | George Gregory Director, 10%+ | P | 20,000 | $14.30 | $286.0K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $14.30 | $143.0K |
| 04-09 | George Gregory Director, 10%+ | P | 5,240 | $14.25 | $74.7K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $14.25 | $142.5K |
| 04-09 | George Gregory Director, 10%+ | P | 5,000 | $14.30 | $71.5K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $14.30 | $143.0K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $14.30 | $143.0K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $14.10 | $141.0K |
| 04-09 | George Gregory Director, 10%+ | P | 886,890 | $1.43 | $1.27M |
| 04-09 | George Gregory Director, 10%+ | P | 105,000 | $1.46 | $153.3K |
| 04-09 | George Gregory Director, 10%+ | P | 500,000 | $1.44 | $720.0K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $1.44 | $14.4K |
| 04-09 | George Gregory Director, 10%+ | P | 4,760 | $1.44 | $6.9K |
| 04-09 | George Gregory Director, 10%+ | P | 20,000 | $1.43 | $28.6K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $1.43 | $14.3K |
| 04-09 | George Gregory Director, 10%+ | P | 5,240 | $1.43 | $7.5K |
| 04-09 | George Gregory Director, 10%+ | P | 10,000 | $1.43 | $14.3K |
| 04-09 | George Gregory Director, 10%+ | P | 5,000 | $1.43 | $7.2K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions2
- Ken Griffin (Citadel Advisors)+131,388$2.4M
- Steve Cohen (Point72)+38,185$689K
Added to2
- Two Sigma Investments+31,712$572K
- AQR Capital Management+11,242$203K
Trimmed0
—
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q1 | 4 | $577K |
| 2024Q2 | 5 | $2.1M |
| 2024Q3 | 5 | $2.3M |
| 2024Q4 | 3 | $3.56B |
| 2025Q1 | 5 | $9.2M |
| 2025Q2 | 6 | $3.9M |
| 2025Q3 | 4 | $5.4M |
| 2025Q4 | 6 | $13.6M |
Who owns MESO
6 super-investors · 2025Q4
Tracked stake
751.5K
shares
Combined value
$14M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New4Added2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 468.1K | $8M |
| 2 | Ken Griffin Citadel Advisors | 131.4K | $2M |
| 3 | Two Sigma Investments | 57.6K | $1M |
| 4 | Steve Cohen Point72 | 38.2K | $689K |
| 5 | Ken Griffin Citadel Advisors | 31.1K | $561K |
| 6 | AQR Capital Management | 25.2K | $455K |
Recent moves
20 transactions
- +131,388 · 2025Q4
- +38,185 · 2025Q4
- +11,242 · 2025Q4
- +31,712 · 2025Q4
- −7,364 · 2025Q3
- −32,283 · 2025Q3
- +41 · 2025Q3
- +13,932 · 2025Q2
- +15,161 · 2025Q2
- −1,066 · 2025Q2
- +33,213 · 2025Q2
- +1,066 · 2025Q1
- +17,122 · 2025Q1
- −179,593 · 2025Q1
- −20,351 · 2024Q4
- −14,664 · 2024Q4
- +179,593 · 2024Q4
- +20,351 · 2024Q3
- +1,189 · 2024Q3
- −11,192 · 2024Q2
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