X0306 4 2022-07-11 0 0001850270 PROKIDNEY CORP. PROK 0001715450 Palihapitiya Chamath C/O SC MASTER HOLDINGS, LLC 506 SANTA CRUZ AVENUE, SUITE 300 MENLO PARK CA 94025 0 0 1 0 Class A ordinary shares 2022-07-11 4 A 0 9000000 10.00 A 9640000 I See footnote Class A ordinary shares 2022-07-11 4 M 0 6220000 0.00 A 15860000 I See footnote Class A ordinary shares 2022-07-11 4 J 0 3087000 0.00 D 12773000 I See footnote Class B ordinary shares 2022-07-11 4 M 0 6220000 0.00 D Class A ordinary shares 6220000 0 I See footnote Represents Class A ordinary shares purchased by SC PIPE Holdings LLC ("SC PIPE Holdings") in connection with the consummation of the business combination between the issuer and ProKidney LP (the "Business Combination"). SC PIPE Holdings is controlled by Mr. Palihapitiya. Mr. Palihapitiya may be deemed to beneficially own shares held by SC PIPE Holdings by virtue of his indirect interests in SC PIPE Holdings or his control over SC PIPE Holdings, as the case may be. The Class B ordinary shares held by SCS Sponsor III LLC (the "Sponsor") converted to Class A ordinary shares on a one-for-one basis upon the consummation of the Business Combination. The Sponsor is managed by its managers, Chamath Palihapitiya and Kishan Mehta. A majority of the voting interests of the Sponsor are held by SC SPAC Holdings LLC, which is controlled by Mr. Palihapitiya. Mr. Palihapitiya may be deemed to beneficially own shares held by the Sponsor by virtue of his indirect interests in the Sponsor or his shared control over the Sponsor, as the case may be. Represents the distribution for no consideration by the Sponsor of 6,860,000 Class A ordinary shares to its members pro rata in accordance with their respective interests (the "Sponsor Distribution"). SC Master Holdings, LLC ("SC Master Holdings"), received 3,773,000 Class A ordinary shares in the Sponsor Distribution. SC Master Holdings is controlled by Mr. Palihapitiya. Mr. Palihapitiya may be deemed to beneficially own shares held by SC Master Holdings by virtue of his indirect interests in SC Master Holdings or his control over SC Master Holdings, as the case may be. The Class B ordinary shares were automatically convertible into Class A ordinary shares at the time of the issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to certain adjustments, and had no expiration date. The inclusion of the securities in this report shall not be deemed an admission by the reporting person of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934 or for any other purpose or that any of the transactions reported herein are subject to Section 16. CHAMATH PALIHAPITIYA By: /s/ James Ryans, as attorney-in-fact 2022-07-13