| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| VIKING GLOBAL INVESTORS LP | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of O. Andreas Halvorsen (6)(7) | 2025-07-01 | 0001103804 |
| Viking Global Opportunities Parent GP LLC | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of David C. Ott (6)(7) | 2025-07-01 | 0001886738 |
| Viking Global Opportunities GP LLC | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of Rose S. Shabet (6)(7) | 2025-07-01 | 0001629476 |
| Viking Global Opportunities Portfolio GP LLC | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of O. Andreas Halvorsen (6)(7) | 2025-07-01 | 0001629472 |
| Viking Global Opportunities Illiquid Investments Sub-Master LP | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of O. Andreas Halvorsen (6)(7) | 2025-07-01 | 0001629482 |
| HALVORSEN OLE ANDREAS | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of O. Andreas Halvorsen (6)(7) | 2025-07-01 | 0001133006 |
| Ott David C. | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of O. Andreas Halvorsen (6)(7) | 2025-07-01 | 0001621842 |
| Shabet Rose Sharon | 10%+ Owner | 600 WASHINGTON BLVD., FLOOR 11, STAMFORD | /s/ Scott M. Hendler signing on behalf of O. Andreas Halvorsen (6)(7) | 2025-07-01 | 0001711393 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BBIO | Common Stock | Sale | -$154M | -3.5M | -15.87% | $44.00 | 18.6M | Jun 27, 2025 | See Explanation of Responses | F1, F2, F3, F4, F5 |
Viking Global Investors Lp is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.
| Id | Content |
|---|---|
| F1 | This amount includes 155,000 shares of Common Stock sold on behalf of Viking Global Equities Master Ltd. ("VGEM"), 61,690 shares of Common Stock sold on behalf of Viking Long Fund Master Ltd. ("VLFM"), and 3,283,310 shares of Common Stock sold on behalf of Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). |
| F2 | This amount includes 332,901 shares of Common Stock held directly by VGEM, 132,494 shares of Common Stock held directly by VLFM, and 18,089,980 shares of Common Stock held directly by Opportunities Fund. |
| F3 | Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), which provides managerial services to VGEM, Viking Long Fund GP LLC ("VLFGP"), which provides managerial services to VLFM, and Viking Global Opportunities Parent GP LLC ("Parent"). VGI provides managerial services to various investment funds and vehicles, including VGEM, VLFM, and Opportunities Fund. Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP") is the general partner of Opportunities Fund. Viking Global Opportunities GP LLC ("Opportunities GP") is the sole member of Opportunities Portfolio GP. Parent is the sole member of Opportunities GP. |
| F4 | Because of the relationship between each of Opportunities Portfolio GP, Opportunities GP, Parent, and Opportunities Fund, each of Opportunities Portfolio GP, Opportunities GP, and Parent may be deemed to beneficially own the shares held directly by Opportunities Fund. Because of the relationship between VGI and each of VGEM, VLFM, and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by VGEM, VLFM, and Opportunities Fund. Each of VGI, Mr. Halvorsen, Mr. Ott, and Ms. Shabet may be deemed to beneficially own all of the securities reported on this form. |
| F5 | The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose. |
(6) The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act. (7) Scott M. Hendler is signing on behalf of Mr. Halvorsen, Mr. Ott, and Ms. Shabet, each individually and as an Executive Committee Member of VIKING GLOBAL PARTNERS LLC, on behalf of VIKING GLOBAL INVESTORS LP, and as an Executive Committee Member of VIKING GLOBAL OPPORTUNITIES PARENT GP LLC, on behalf of itself and VIKING GLOBAL OPPORTUNITIES GP LLC, VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC, and VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP, pursuant to authorization and designation letters dated February 9, 2021, which were filed with the Securities and Exchange Commission on June 7, 2021.