X0206 3 2019-06-27 0 0001743881 BridgeBio Pharma, Inc. BBIO 0001103804 VIKING GLOBAL INVESTORS LP 55 RAILROAD AVENUE GREENWICH CT 06830 0 0 1 0 0001629482 Viking Global Opportunities Illiquid Investments Sub-Master LP 55 RAILROAD AVENUE GREENWICH CT 06830 0 0 1 0 0001629472 Viking Global Opportunities Portfolio GP LLC 55 RAILROAD AVENUE GREENWICH CT 06830 0 0 1 0 0001629476 Viking Global Opportunities GP LLC 55 RAILROAD AVENUE GREENWICH CT 06830 0 0 1 0 0001133006 HALVORSEN OLE ANDREAS 55 RAILROAD AVENUE GREENWICH CT 06830 0 0 1 0 0001621842 Ott David C. 55 RAILROAD AVENUE GREENWICH CT 06830 0 0 1 0 0001711393 Shabet Rose Sharon 55 RAILROAD AVENUE GREENWICH CT 06830 0 0 1 0 Series C Preferred Units Common Stock 11736137 I See Explanation of Responses Series D Preferred Units Common Stock 10178954 I See Explanation of Responses Immediately prior to the closing of the Issuer's initial public offering (the "IPO"), all outstanding units in BridgeBio Pharma LLC (the "LLC") will be exchanged for shares of Common Stock, par value $0.001 per share (the "Common Stock"), of the Issuer in an exempt transaction pursuant to Rules 16b-6 and 16b-7 (the "Reorganization"). In connection with the Reorganization, a wholly-owned subsidiary of the Issuer will be merged with and into the LLC, and shares of Common Stock will be allocated to the holders of outstanding units in the LLC pursuant to the distribution provisions of the Fourth Amended and Restated Limited Liability Company Agreement of the LLC, dated November 20, 2018, as amended, based upon the liquidation value of the LLC, assuming it was is liquidated immediately prior to the closing of the IPO with a value implied by the IPO price of $17.00 per share. The LLC units have no expiration date. 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") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Each of VGI, Opportunities GP, Opportunities Portfolio GP, VGOL, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own the shares reported on this form. VGI provides managerial services to Opportunities Fund, which directly holds the 21,915,091 shares of Common Stock reported herein. Because of the relationship between VGI and VGOP, VGI may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by Opportunities Fund. 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 3 pursuant to Rule 16a-3(j) under the Exchange Act. (7) Each of O. Andreas Halvorsen, David C. Ott and Rose S. Shabet is signing 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 GP LLC, on behalf of itself and VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC and VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP. /s/ O. Andreas Halvorsen (6)(7) 2019-06-27 /s/ David C. Ott (6)(7) 2019-06-27 /s/ Rose S. Shabet (6)(7) 2019-06-27