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ProKidney Corp.
PROK
Amendment
Ownership

36.00%

Total Shares

73,842,723

Issuer CIK

1850270

Event Date

Apr 27, 2026

Accepted

Apr 30, 2026, 04:24 PM

SEC EDGARView Original Filing
Reporting Persons (8)
Joint Filing

This is a joint filing. The reported shares may overlap between reporting persons and should not be summed.

NameType% of ClassAggregateSole VotingShared Voting
Carlos Slim Helu
Individual
36.00%73,842,723073,842,723
Carlos Slim Domit
Individual
36.00%73,842,723073,842,723
Marco Antonio Slim Domit
Individual
36.00%73,842,723073,842,723
Patrick Slim Domit
Individual
36.00%73,842,723073,842,723
Maria Soumaya Slim Domit
Individual
36.00%73,842,723073,842,723
Vanessa Paola Slim Domit
Individual
36.00%73,842,723073,842,723
Johanna Monique Slim Domit
Individual
36.00%73,842,723073,842,723
Control Empresarial de Capitales S.A. de C.V.
CO
36.00%73,842,723073,842,723
Disclosure Items (3)

Security Title

Class A Common Stock, par value $0.0001 per share

Issuer Name

ProKidney Corp.

Issuer Address

2000 FRONTIS PLAZA BLVD., WINSTON-SALEM, NC, 27103

Delaware Domestication On July 1, 2025, the Issuer effected a domestication from the Caymans Islands to the State of Delaware (the "Domestication"). Effective as of July 1, 2025, each (i) Class A ordinary share automatically converted into one share of Class A Common Stock of the Issuer and (ii) each Class B ordinary share automatically converted into one share of Class B common stock of the Issuer. Exchange Agreement Prior to April 28, 2026 (the "Transaction Date"), in addition to 10,724,078 shares of Class A Common Stock, the Reporting Persons beneficially owned 63,118,645 shares of Class B common stock of the Issuer held by Control Empresarial, each of which may, subject to the limitations set forth in the Amended and Restated Exchange Agreement and the Holdings LLCA (each as defined and as described in the Issuer's Current Report on Form 8-K filed with the SEC on July 3, 2025), be exchanged, together with the paired common unit in ProKidney Holdings, LLC (the "Paired Interests"), for a share of Class A Common Stock on a one-for-one basis. Control Empresarial held 63,118,645 Paired Interests prior to the Transaction Date. On the Transaction Date, Control Empresarial exchanged 63,118,645 Paired Interests for 63,118,645 shares of Class A Common Stock. As a result, as of the date of this filing, the Reporting Persons beneficially own 73,842,723 shares of Class A Common Stock.

Percentage of Class

Calculations of the percentage of the Class A Common Stock beneficially owned by each Reporting Person are based on 205,061,550 shares of Class A Common Stock outstanding, which is the sum of (i) 141,942,905 shares of Class A Common Stock outstanding as of March 17, 2026, as disclosed in the Issuer's Annual Report on Form 10-K filed with the SEC on March 18, 2026 and (ii) 63,118,645 shares of Class A Common Stock issued by the Issuer to the Reporting Persons upon exchange of the Paired Interests held by Control Empresarial on the Transaction Date. As of the date of this filing, (i) Control Empresarial, directly or indirectly, owns 73,842,723 shares of Class A Common Stock (representing a 36.0% of the outstanding shares of Class A Common Stock ), and (ii) the Slim Family, which are beneficiaries of a Mexican trust that owns all of the issued and outstanding voting equity securities of Control Empresarial, may be deemed to beneficially own indirectly the Class A Common Stock beneficially owned directly by Control Empresarial.

Number of Shares

73,842,723 shares of Class A Common Stock (representing a 36.0% of the outstanding shares of Class A Common Stock.

Transactions

Except as set forth in Item 4 of this Second Amendment, no transactions have been effected by the Reporting Persons in the past sixty (60) days.

ProKidney Corp. — Schedule 13D | 13D Filings