Biomea Fusion, Inc.
Biomea Fusion, Inc. (BMEA) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · BMEA · as of Sep 30, 2025
Ownership Breakdown
80
Institutional Holders
▼ 16 vs Q2
$50.62M
Total Inst. Value
▼ $1.11M vs Q2
59.50M
Shares Outstanding
freeFloat 87.98%
25.06M
13F Shares Held
▼ 3.68M vs Q2
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
BMEA largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
FMR LLC pharmaceutical preparations | 7.62M | 18.75% | 18.75% | $15.39B | Nov 13, 2025 | ▲ 372.9K |
CORMORANT ASSET MANAGEMENT, LP pharmaceutical preparations | 3.57M | 8.79% | 8.79% | $7.21B | Nov 14, 2025 | — held |
VANGUARD GROUP INC pharmaceutical preparations | 2.17M | 5.34% | 5.34% | $4.38B | Nov 7, 2025 | ▲ 290.4K |
AISLING CAPITAL MANAGEMENT LP pharmaceutical preparations | 2.05M | 5.04% | 5.04% | $4.14B | Nov 12, 2025 | — held |
HEIGHTS CAPITAL MANAGEMENT, INC pharmaceutical preparations | 1.44M | 3.54% | 3.54% | $2.90B | Nov 18, 2025 | ▼ 2.40M |
WOODLINE PARTNERS LP pharmaceutical preparations | 1.30M | 3.20% | 3.20% | $2.63B | Nov 14, 2025 | ▼ 443.0K |
BLACKROCK, INC. pharmaceutical preparations | 901.6K | 2.22% | 2.22% | $1.82B | Nov 12, 2025 | ▲ 148.0K |
RENAISSANCE TECHNOLOGIES LLC pharmaceutical preparations | 595.9K | 1.47% | 1.47% | $1.20B | Nov 13, 2025 | ▲ 595.9K |
FEDERATED HERMES, INC. pharmaceutical preparations | 572.0K | 1.41% | 1.41% | $1.16B | Nov 3, 2025 | ▼ 4.3K |
TWO SIGMA INVESTMENTS, LP pharmaceutical preparations | 563.0K | 1.39% | 1.39% | $1.14B | Nov 14, 2025 | ▲ 213.3K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
21
Increased
+3.11M shares6
New Positions
first time holders15
Decreased
−3.43M shares0
Sold Out
fully exitedNet shares change (top 50)
325.5K
+3.11M / −3.43M
Net new holders
+12
6 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
BMEA 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.
2
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 |
|---|---|---|---|---|---|---|---|
Erdtmann Rainer M See Remarks | Apr 1, 2026 | Award | 452,512 | $1.49 | $674.2K | 452.5K | Form 4 ↗ |
Hitchcock Michael J.M. Interim CEO | Apr 1, 2026 | Award | 667,477 | $1.49 | $994.5K | 667.5K | Form 4 ↗ |
Erdtmann Rainer M See Remarks | Dec 11, 2025 | Purchase | 30,000 | $1.43 | $43.0K | 723.0K | Form 4 ↗ |
Hitchcock Michael J.M. Interim CEO | Dec 2, 2025 | Purchase | 100,000 | $0.99 | $99.2K | 115.0K | Form 4 ↗ |
Erdtmann Rainer M See Remarks | Dec 1, 2025 | Purchase | 10,000 | $1.05 | $10.5K | 693.0K | Form 4 ↗ |
Erdtmann Rainer M See Remarks | Nov 28, 2025 | Purchase | 40,000 | $1.10 | $44.1K | 683.0K | Form 4 ↗ |
Hitchcock Michael J.M. Interim CEO | Aug 11, 2025 | Award | 916,434 | $1.53 | $1.40M | 916.4K | Form 4 ↗ |
Erdtmann Rainer M See Remarks | Aug 11, 2025 | Award | 1,246,989 | $1.53 | $1.91M | 1.25M | Form 4 ↗ |
Erdtmann Rainer M See Remarks | Jan 28, 2025 | Gift | 40,000 | — | — | 673.0K | Form 4 ↗ |
Erdtmann Rainer M See Remarks | Jan 31, 2025 | Gift | 10,000 | — | — | 663.0K | 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
Biomea Fusion, Inc. (BMEA) is primarily owned by institutional investors, who hold approximately 42.1% of total shares outstanding. Company insiders own approximately 12.02%, while retail and public investors account for the remaining 45.85%.
The largest institutional shareholder of Biomea Fusion, Inc. is FMR LLC, holding approximately 7.62 million shares — equal to 18.75% of outstanding shares — as of September 30, 2025.
A total of 80 institutional investors currently hold BMEA stock, with a combined institutional value of approximately $50,621,304 as of the most recent 13F filing period.
Frequently asked questions
BMEA ownershipBiomea Fusion, Inc. (BMEA) is primarily owned by institutional investors, who hold approximately 42.1% of shares. The largest shareholder is FMR LLC with a 18.75% stake. Company insiders hold 12.02%. Data sourced from SEC Form 13F as of September 30, 2025.