X0508 4 2023-10-30 0 0001850270 PROKIDNEY CORP. PROK 0001507678 Legorreta Pablo G. C/O PROKIDNEY CORP 2000 FRONTIS PLAZA BOULEVARD, SUITE 250 WINSTON-SALEM NC 27103 1 0 1 0 0001937011 Tolerantia, LLC 110 EAST 59TH STREET SUITE 2800 NEW YORK NY 10022 0 0 1 0 0 Class A Ordinary Shares 2023-10-30 4 C 0 5289055 0.00 A 5289055 I See footnote Class A Ordinary Shares 2023-10-30 4 J 0 5289055 0.00 D 0 I See footnote Class B Ordinary Shares 0.00 2023-10-30 4 C 0 5289055 0.00 D Class A Ordinary Shares 5289055 89388913 I See footnote Common Units in ProKidney LP 0.00 2023-10-30 4 C 0 5289055 0.00 D Class A Ordinary Shares 5289055 89388913 I See footnote Represents equity interests held by Tolerantia, which is an affiliate controlled and majority owned by Pablo Legorreta. Mr. Legorreta controls the voting and disposition of the equity interests held by Tolerantia. Mr. Legorreta disclaims beneficial ownership of the equity interests held by Tolerantia except to the extent of his indirect pecuniary interest therein. Prior to October 30, 2023 (the "Transaction Date"), Tolerantia held 94,677,968 Common Units in ProKidney and an equal number of Class B Ordinary Shares (the "Paired Interests"), 84,160,537 of which were held by Nefro Health, an Irish partnership that is an affiliate controlled and majority-owned by Mr. Pablo Legorreta, and 10,517,431 of which were held by other investors which are unaffiliated with Mr. Legorreta (the "Unaffiliated Investors"). On the Transaction Date, Tolerantia exchanged 5,289,055 of the 10,517,431 Paired Interests attributable to the interests of the Unaffiliated Investors in Tolerantia for 5,289,055 Class A Ordinary Shares, which it subsequently distributed in-kind pro rata for no consideration to the Unaffiliated Investors. The Class B Ordinary Shares and the Common Units in ProKidney LP (the "Common Units") are paired securities. At the election of the reporting person and subject to the limitations set forth in the Exchange Agreement and the Second Amended and Restated Company Partnership Agreement, each Class B Ordinary Share, together with a paired Common Unit, may be exchanged for a Class A Ordinary Share on a one-for-one basis. The Class B Ordinary Shares were received pursuant to the terms of the Business Combination Agreement by and between the Issuer (formerly known as Social Capital Suvretta Holdings Corp. III) and ProKidney LP, dated as of January 18, 2022 (the "Business Combination Agreement"), in exchange for historical interests held by the reporting person in ProKidney LP. The Class B Ordinary Shares do not expire. The Common Units were received pursuant to the terms of the Business Combination Agreement in exchange for historical interests held by the reporting person in ProKidney LP. The Common Units do not expire. /s/ Todd Girolamo as Attorney-in-Fact for Pablo G. Legorreta 2023-11-01