BioMarin Pharmaceutical Inc.
BioMarin Pharmaceutical Inc. (BMRN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · BMRN · as of Sep 30, 2025
Ownership Breakdown
611
Institutional Holders
▼ 9 vs Q2
$9.73B
Total Inst. Value
▼ $423.16M vs Q2
193.28M
Shares Outstanding
freeFloat 99.43%
179.58M
13F Shares Held
▼ 5.01M 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
BMRN largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. pharmaceutical preparations | 22.05M | 11.52% | 11.52% | $1.19T | Nov 12, 2025 | ▼ 1.96M |
VANGUARD GROUP INC pharmaceutical preparations | 18.58M | 9.71% | 9.71% | $1.01T | Nov 7, 2025 | ▼ 421.2K |
PRIMECAP MANAGEMENT CO/CA/ pharmaceutical preparations | 15.23M | 7.96% | 7.96% | $824.82B | Nov 12, 2025 | ▼ 542.9K |
DODGE & COX pharmaceutical preparations | 14.69M | 7.67% | 7.67% | $795.44B | Nov 13, 2025 | ▼ 421.5K |
STATE STREET CORP pharmaceutical preparations | 8.76M | 4.58% | 4.58% | $474.69B | Nov 14, 2025 | ▼ 83.2K |
VIKING GLOBAL INVESTORS LP pharmaceutical preparations | 8.32M | 4.35% | 4.35% | $450.73B | Nov 14, 2025 | ▼ 3.97M |
AQR CAPITAL MANAGEMENT LLC pharmaceutical preparations | 5.93M | 3.10% | 3.10% | $321.28B | Nov 14, 2025 | ▲ 351.5K |
GEODE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 3.54M | 1.85% | 1.85% | $191.29B | Nov 12, 2025 | ▲ 67.7K |
MILLENNIUM MANAGEMENT LLC pharmaceutical preparations | 2.63M | 1.37% | 1.37% | $142.29B | Nov 14, 2025 | ▼ 207.1K |
CAPITAL RESEARCH GLOBAL INVESTORS pharmaceutical preparations | 2.54M | 1.33% | 1.33% | $137.44B | Nov 13, 2025 | ▲ 2.15M |
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
27
Increased
+8.58M shares1
New Positions
first time holders21
Decreased
−11.01M shares0
Sold Out
fully exitedNet shares change (top 50)
2.43M
+8.58M / −11.01M
Net new holders
+7
1 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
BMRN insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
9
Buy transactions
2
Sell transactions
4.50
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 |
|---|---|---|---|---|---|---|---|
Countouriotis Athena director | Jun 2, 2026 | Award | 7,490 | — | — | 21.0K | Form 4 ↗ |
Walbert Timothy P director | Jun 2, 2026 | Award | 7,490 | — | — | 17.3K | Form 4 ↗ |
Ho Maykin director | Jun 2, 2026 | Award | 7,490 | — | — | 35.5K | Form 4 ↗ |
HOMBACH ROBERT J. director | Jun 2, 2026 | Award | 7,490 | — | — | 49.4K | Form 4 ↗ |
Enyedy Mark J director | Jun 2, 2026 | Award | 7,490 | — | — | 21.0K | Form 4 ↗ |
Dere Willard H director | Jun 2, 2026 | Award | 7,490 | — | — | 46.4K | Form 4 ↗ |
CLARK IAN T director | Jun 2, 2026 | Award | 7,490 | — | — | 14.5K | Form 4 ↗ |
Bodem Barbara W. director | Jun 2, 2026 | Award | 7,490 | — | — | 21.0K | Form 4 ↗ |
ANDERSON ELIZABETH M director | Jun 2, 2026 | Award | 7,490 | — | — | 41.9K | Form 4 ↗ |
Hubbard Cristin EVP, Chief Commercial Officer | May 20, 2026 | Tax Withhold | 2,318 | $50.20 | $116.4K | 42.5K | 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
BioMarin Pharmaceutical Inc. (BMRN) is primarily owned by institutional investors, who hold approximately 92.9% of total shares outstanding. Company insiders own approximately 0.57%, while retail and public investors account for the remaining 6.52%.
The largest institutional shareholder of BioMarin Pharmaceutical Inc. is BLACKROCK, INC., holding approximately 22.05 million shares — equal to 11.52% of outstanding shares — as of September 30, 2025.
A total of 611 institutional investors currently hold BMRN stock, with a combined institutional value of approximately $9.73 billion as of the most recent 13F filing period.
Frequently asked questions
BMRN ownershipBioMarin Pharmaceutical Inc. (BMRN) is primarily owned by institutional investors, who hold approximately 92.9% of shares. The largest shareholder is BLACKROCK, INC. with a 11.52% stake. Company insiders hold 0.57%. Data sourced from SEC Form 13F as of September 30, 2025.