Contribution, Tolerantia held an aggregate of 87,000,000 Class A Units of ProKidney Bermuda. On June 29, 2021, ProKidney Bermuda issued additional Class A Units to its members,
including Tolerantia, in accordance with the terms and conditions of the ProKidney Bermuda Agreement, in exchange for an aggregate of $11,500,000 in capital contributions (the Second 2021 Contribution). Tolerantia made a capital
contribution of $6,900,000 to ProKidney Bermuda in exchange for 6,900,000 Class A Units in the Second 2021 Contribution. Given the effect of the Second 2021 Contribution, Tolerantia held an aggregate of 93,900,000 Class A Units of
ProKidney Bermuda.
On August 5, 2021, ProKidney was formed as a limited partnership under the laws of Ireland. The members of
ProKidney Bermuda, including Tolerantia, contributed all of their holdings in ProKidney Bermuda as a contribution in specie to ProKidney. As a result, ProKidney Bermuda became a wholly owned subsidiary of ProKidney and Tolerantia became one
of the partners of ProKidney, holding an aggregate of 93,900,000 Legacy Class A Units. On October 15, 2021, ProKidney issued additional Legacy Class A Units to its partners, including Tolerantia, in accordance with the terms and
conditions of the ProKidney Limited Partnership Agreement, in exchange for an aggregate contribution of $30,000,000 (the Third 2021 Contribution). Tolerantia, as one of the partners of ProKidney, made a contribution of $18,000,000
to ProKidney in exchange for 18,000,000 Legacy Class A Units pursuant to the ProKidney Limited Partnership Agreement. Given the effect of the Third 2021 Contribution, Tolerantia held an aggregate of 111,900,000 Class A Units of ProKidney.
At the Closing, the ProKidney Class A Units held by Tolerantia were recapitalized into Post-Combination ProKidney Common Units and ProKidney Class B ordinary shares pursuant to the terms of the Business Combination Agreement.
Contributions to ProKidney Bermuda and ProKidney by CEC and entities controlled by CEC
On December 12, 2018, ProKidney Bermuda entered into the ProKidney Bermuda Agreement with Mr. Pablo Legorreta, which was amended and
restated on December 31, 2018 to admit Inversora Carso, S.A. de C.V., a Mexican corporation (INCA), as an additional member. INCA contributed to ProKidney Bermuda an aggregate of $30,000,000 as consideration for 30,000,000
Class A Units of ProKidney Bermuda. In the 2019 Contribution, INCA made an additional capital contribution of $8,000,000 to ProKidney Bermuda in exchange for 8,000,000 Class A Units. Given the effect of the 2019 Contribution, INCA held an
aggregate of 38,000,000 Class A Units of ProKidney Bermuda.
On June 30, 2020, INCA merged with and into CEC, with CEC surviving
the merger. In accordance with the terms of the ProKidney Bermuda Agreement, INCA ceased to be a member of ProKidney Bermuda and CEC became a substituted member of ProKidney Bermuda. In the 2020 Contribution, CEC made another capital contribution of
$5,000,000 to ProKidney Bermuda in exchange for 5,000,000 Class A Units. As a result of the 2020 Contribution, CEC held an aggregate of 43,000,000 Class A Units of ProKidney Bermuda.
In the First 2021 Contribution, CEC made a capital contribution in an aggregate amount of $15,000,000 to ProKidney Bermuda in exchange for
15,000,000 Class A Units. Given the effect of the First 2021 Contribution, CEC held an aggregate of 58,000,000 Class A Units of ProKidney Bermuda. In the Second 2021 Contribution, CEC made a capital contribution of $4,600,000 to ProKidney
Bermuda in exchange for 4,600,000 Class A Units. Given the effect of the Second 2021 Contribution, CEC held an aggregate of 62,600,000 Class A Units of ProKidney Bermuda.
On August 5, 2021, ProKidney was formed as a limited partnership under the laws of Ireland. The members of ProKidney Bermuda, including
CEC, contributed all of their holdings in ProKidney Bermuda as a contribution in specie to ProKidney. As a result, ProKidney Bermuda became a wholly owned subsidiary of ProKidney, and CEC became one of the partners of ProKidney, holding an
aggregate of 62,600,000 Legacy Class A Units. In the Third 2021 Contribution, CEC, as one of the partners of ProKidney, made a capital contribution of $12,000,000 to ProKidney in exchange for 12,000,000 Legacy Class A Units pursuant to the
ProKidney Limited Partnership Agreement. Given the effect of the Third 2021 Contribution, CEC held an aggregate of 74,600,000 Class A Units
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