| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| SUVRETTA CAPITAL MANAGEMENT, LLC | Director, 10%+ Owner | 540 MADISON AVENUE, 7TH FLOOR, NEW YORK | Suvretta Capital Management, LLC; By: /s/Andrew Nathanson, General Counsel & Chief Compliance Officer | 22 Dec 2025 | 0001569064 |
| Cowen Aaron | 10%+ Owner | C/O SUVRETTA CAPITAL MANAGEMENT, LLC, 540 MADISON AVENUE, 7TH FLOOR, NEW YORK | Suvretta Capital Management, LLC; By: /s/Andrew Nathanson, General Counsel & Chief Compliance Officer | 22 Dec 2025 | 0001869640 |
| Averill Master Fund, Ltd. | Director, 10%+ Owner | C/O SUVRETTA CAPITAL MANAGEMENT, LLC, 540 MADISON AVENUE, 7TH FLOOR, NEW YORK | Suvretta Capital Management, LLC; By: /s/Andrew Nathanson, General Counsel & Chief Compliance Officer | 22 Dec 2025 | 0001939329 |
| Averill Madison Master Fund, Ltd. | Director, 10%+ Owner | C/O SUVRETTA CAPITAL MANAGEMENT, LLC, 540 MADISON AVENUE, 7TH FLOOR, NEW YORK | Suvretta Capital Management, LLC; By: /s/Andrew Nathanson, General Counsel & Chief Compliance Officer | 22 Dec 2025 | 0002021243 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BNTC | Common stock, par value $0.0001 per share | Purchase | $97,788 | +8,700 | +0.09% | $11.24 | 9,546,875 | 18 Dec 2025 | See footnotes | F1, F2 |
| transaction | BNTC | Common stock, par value $0.0001 per share | Purchase | $17,029 | +1,515 | +0.08% | $11.24 | 1,821,327 | 18 Dec 2025 | See footnotes | F1, F3 |
| transaction | BNTC | Common stock, par value $0.0001 per share | Purchase | $160,146 | +13,950 | +0.15% | $11.48 | 9,560,825 | 19 Dec 2025 | See footnotes | F1, F4 |
| transaction | BNTC | Common stock, par value $0.0001 per share | Purchase | $27,942 | +2,434 | +0.13% | $11.48 | 1,823,761 | 19 Dec 2025 | See footnotes | F1, F5 |
| transaction | BNTC | Common stock, par value $0.0001 per share | Purchase | $201,132 | +16,650 | +0.17% | $12.08 | 9,577,475 | 22 Dec 2025 | See footnotes | F1, F6 |
| transaction | BNTC | Common stock, par value $0.0001 per share | Purchase | $34,935 | +2,892 | +0.16% | $12.08 | 1,826,653 | 22 Dec 2025 | See footnotes | F1, F7 |
| Id | Content |
|---|---|
| F1 | Notes are included on Exhibit 99.1. |
| F2 | Notes are included on Exhibit 99.1. |
| F3 | Notes are included on Exhibit 99.1. |
| F4 | Notes are included on Exhibit 99.1. |
| F5 | Notes are included on Exhibit 99.1. |
| F6 | Notes are included on Exhibit 99.1. |
| F7 | Notes are included on Exhibit 99.1. |
Exhibit List: Exhibit 99.1 - Explanation of Responses Exhibit 99.2 - Joint Filer Information Exhibit 99.3 - Joint Filers' Signature