BMRN's three largest insider shareholders as of September 29, 2026 are Jean Jacques Bienaime (Chief Executive Officer, 473.79K shares), Jean Jacques Bienaime (Chief Executive Officer, 247.43K shares), Alexander Hardy (Chief Executive Officer, 214.63K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Jean Jacques Bienaime | Chief Executive Officer | 473,792 | 0 | 473,792 | 24.0% | 21 May, 2024 |
| 2 | Alexander Hardy | Chief Executive Officer | 214,635 | 0 | 214,635 | 10.9% | 19 Mar, 2026 |
| 3 | Henry J Fuchs | President, Worldwide Rd | 185,074 | 0 | 185,074 | 9.4% | 17 Sep, 2024 |
| 4 | Richard A Meier | Director | 127,426 | 0 | 127,426 | 6.5% | 22 May, 2025 |
| 5 | Brian Mueller | Evp, Chief Financial Officer | 123,314 | 0 | 123,314 | 6.3% | 19 Mar, 2026 |
| 6 | Elaine J Heron | Director | 97,720 | 0 | 97,720 | 5.0% | 04 Jun, 2024 |
| 7 | Charles Greg Guyer | Evp, Chief Technical Officer | 84,140 | 0 | 84,140 | 4.3% | 19 Mar, 2026 |
| 8 | Jeffrey Robert Ajer | Evp, Chief Commercial Officer | 66,767 | 0 | 66,767 | 3.4% | 06 May, 2024 |
| 9 | George Eric Davis | Evp, Chief Legal Officer | 61,003 | 0 | 61,003 | 3.1% | 03 Sep, 2026 |
| 10 | Gregory R Friberg | Evp, Chief Rd Officer | 51,818 | 0 | 51,818 | 2.6% | 11 May, 2026 |
| 11 | David E I Pyott | Director | 49,750 | 0 | 49,750 | 2.5% | 23 May, 2024 |
| 12 | Robert J. Hombach | Director | 49,360 | 0 | 49,360 | 2.5% | 04 Jun, 2026 |
| 13 | Willard H Dere | Director | 46,440 | 0 | 46,440 | 2.4% | 04 Jun, 2026 |
| 14 | Cristin Hubbard | Evp, Chief Commercial Officer | 42,472 | 0 | 42,472 | 2.2% | 21 May, 2026 |
| 15 | Elizabeth M Anderson | Director | 41,940 | 0 | 41,940 | 2.1% | 04 Jun, 2026 |
| 16 | Maykin Ho | Director | 35,500 | 0 | 35,500 | 1.8% | 04 Jun, 2026 |
| 17 | V Bryan Lawlis | Director | 33,140 | 0 | 33,140 | 1.7% | 24 May, 2023 |
| 18 | Dennis Slamon | Director | 31,299 | 0 | 31,299 | 1.6% | 20 Mar, 2024 |
| 19 | Rashmi Virendra Ramchandani | Vp, Chief Accounting Officer | 25,610 | 0 | 25,610 | 1.3% | 22 Jan, 2026 |
| 20 | Barbara W. Bodem | Director | 21,045 | 0 | 21,045 | 1.1% | 04 Jun, 2026 |
| 21 | Mark J Enyedy | Director | 21,040 | 0 | 21,040 | 1.1% | 04 Jun, 2026 |
| 22 | Athena Countouriotis | Director | 21,040 | 0 | 21,040 | 1.1% | 04 Jun, 2026 |
| 23 | Timothy P Walbert | Director | 17,270 | 0 | 17,270 | 0.9% | 04 Jun, 2026 |
| 24 | Mark J Alles | Director | 15,095 | 0 | 15,095 | 0.8% | 24 May, 2023 |
| 25 | Ian T Clark | Director | 14,490 | 0 | 14,490 | 0.7% | 04 Jun, 2026 |
| 26 | Erin Burkhart | Gvp, Chief Accounting Officer | 14,173 | 0 | 14,173 | 0.7% | 20 May, 2025 |
| 27 | Robert M Plenge | Director | 6,140 | 0 | 6,140 | 0.3% | 14 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 02 Sep, 2026 | George Eric Davis | Evp, Chief Legal Officer | Disposed S | 17,557 | $66.28 | $1.16Mn | 61,003 | Direct |
| 02 Jun, 2026 | Timothy P Walbert | Director | Acquired A | 7,490 | $0.00 | $0 | 17,270 | Direct |
| 02 Jun, 2026 | Maykin Ho | Director | Acquired A | 7,490 | $0.00 | $0 | 35,500 | Direct |
| 02 Jun, 2026 | Elizabeth M Anderson | Director | Acquired A | 7,490 | $0.00 | $0 | 41,940 | Direct |
| 02 Jun, 2026 | Ian T Clark | Director | Acquired A | 7,490 | $0.00 | $0 | 14,490 | Direct |
| 02 Jun, 2026 | Mark J Enyedy | Director | Acquired A | 7,490 | $0.00 | $0 | 21,040 | Direct |
| 02 Jun, 2026 | Athena Countouriotis | Director | Acquired A | 7,490 | $0.00 | $0 | 21,040 | Direct |
| 02 Jun, 2026 | Barbara W. Bodem | Director | Acquired A | 7,490 | $0.00 | $0 | 21,045 | Direct |
| 02 Jun, 2026 | Willard H Dere | Director | Acquired A | 7,490 | $0.00 | $0 | 46,440 | Direct |
| 02 Jun, 2026 | Robert J. Hombach | Director | Acquired A | 7,490 | $0.00 | $0 | 49,360 | Direct |
| 20 May, 2026 | Cristin Hubbard | Evp, Chief Commercial Officer | Disposed F | 2,318 | $50.20 | $116.36K | 42,472 | Direct |
| 07 May, 2026 | Gregory R Friberg | Evp, Chief Rd Officer | Disposed S | 3,281 | $53.85 | $176.68K | 51,818 | Direct |
| 17 Mar, 2026 | Alexander Hardy | Chief Executive Officer | Disposed F | 4,252 | $56.05 | $238.32K | 214,635 | Direct |
| 17 Mar, 2026 | Brian Mueller | Evp, Chief Financial Officer | Disposed F | 2,117 | $56.05 | $118.66K | 123,314 | Direct |
| 18 Mar, 2026 | George Eric Davis | Evp, Chief Legal Officer | Disposed F | 1,273 | $56.05 | $71.35K | 78,560 | Direct |
| 17 Mar, 2026 | Charles Greg Guyer | Evp, Chief Technical Officer | Disposed F | 1,693 | $56.05 | $94.89K | 84,140 | Direct |
| 16 Mar, 2026 | Cristin Hubbard | Evp, Chief Commercial Officer | Acquired A | 15,410 | $0.00 | $0 | 46,035 | Direct |
| 16 Mar, 2026 | Gregory R Friberg | Evp, Chief Rd Officer | Acquired A | 19,150 | $0.00 | $0 | 56,728 | Direct |
| 17 Mar, 2026 | Cristin Hubbard | Evp, Chief Commercial Officer | Disposed F | 1,245 | $56.05 | $69.78K | 44,790 | Direct |
| 17 Mar, 2026 | Gregory R Friberg | Evp, Chief Rd Officer | Disposed F | 1,629 | $56.05 | $91.31K | 55,099 | Direct |