# EDGAR Filing Document

**Accession Number:** 0001273693
**File Stem:** 0001140361-26-018258
**Filing Date:** 2026-4
**Character Count:** 28909
**Document Hash:** 4a974bc2ef806170795bff9ea1fe6f14
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-26-018258.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001140361-26-018258

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260430

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PROKIDNEY CORP.
- **CENTRAL INDEX KEY:** 0001850270
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 981586514
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-92651
- **FILM NUMBER:** 26925925

**BUSINESS ADDRESS:**
- **STREET 1:** 2000 FRONTIS PLAZA BLVD.
- **STREET 2:** SUITE 250
- **CITY:** WINSTON-SALEM
- **STATE:** NC
- **ZIP:** 27103
- **BUSINESS PHONE:** 336-999-7028

**MAIL ADDRESS:**
- **STREET 1:** 2000 FRONTIS PLAZA BLVD.
- **STREET 2:** SUITE 250
- **CITY:** WINSTON-SALEM
- **STATE:** NC
- **ZIP:** 27103

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Social Capital Suvretta Holdings Corp. III
- **DATE OF NAME CHANGE:** 20210310
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Control Empresarial de Capitales S.A. de C.V.
- **CENTRAL INDEX KEY:** 0001273693

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** O5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** INSURGENTES SUR #3500, PB
- **STREET 2:** COL. PENA POBRE, DELEGACION TLALPAN, CP
- **CITY:** MEXICO DF
- **STATE:** O5
- **ZIP:** 14060
- **BUSINESS PHONE:** 525556254961

**MAIL ADDRESS:**
- **STREET 1:** INSURGENTES SUR #3500, PB
- **STREET 2:** COL. PENA POBRE, DELEGACION TLALPAN, CP
- **CITY:** MEXICO DF
- **STATE:** O5
- **ZIP:** 14060

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Inversora Carso, S.A. de C.V.
- **DATE OF NAME CHANGE:** 20170801

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** INMOBILIARIA CARSO S A DE C V
- **DATE OF NAME CHANGE:** 20031217

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 2)**

**ProKidney Corp.**

*(Name of Issuer)*

**Class A Common Stock, par value $0.0001 per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Control Empresarial**<br>Paseo de las Palmas 781, 6th Floor<br>Lomas de Chapultepec, Section III<br>Mexico City O5 11000<br>52 55 56 25 49 56

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**04/28/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Carlos Slim Helu** | Name of reporting person<br>**Carlos Slim Helu** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Based on 205,061,550 shares of Class A Common Stock (as defined in Item 1 below) 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 (as defined in Item 4 below) held by Control Empresarial on the Transaction Date (as defined in Item 4 below).

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Carlos Slim Domit** | Name of reporting person<br>**Carlos Slim Domit** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Marco Antonio Slim Domit** | Name of reporting person<br>**Marco Antonio Slim Domit** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Patrick Slim Domit** | Name of reporting person<br>**Patrick Slim Domit** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Maria Soumaya Slim Domit** | Name of reporting person<br>**Maria Soumaya Slim Domit** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Vanessa Paola Slim Domit** | Name of reporting person<br>**Vanessa Paola Slim Domit** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Johanna Monique Slim Domit** | Name of reporting person<br>**Johanna Monique Slim Domit** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Control Empresarial de Capitales S.A. de C.V.** | Name of reporting person<br>**Control Empresarial de Capitales S.A. de C.V.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**O5** | Citizenship or place of organization<br>**O5** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**73842723.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**73842723.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | Aggregate amount beneficially owned by each reporting person<br>**73842723.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**36.0%** | Percent of class represented by amount in Row (11)<br>**36.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** 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.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class A Common Stock, par value $0.0001 per share

**(b) Name of Issuer:**
ProKidney Corp.

**(c) Address of Issuer's Principal Executive Offices:**
2000 FRONTIS PLAZA BLVD., SUITE 250, WINSTON-SALEM, NC, 27103

This Amendment No. 2 (the "Second Amendment") amends and supplements the Schedule 13D filed with the Securities and Exchange Commission (the "SEC") on July 22, 2022 by the Reporting Persons, as amended and supplemented by Amendment No. 1 filed on June 25, 2024 (the "Original Schedule 13D" and, as amended by this Second Amendment, the "Schedule 13D") with respect to the shares of Class A common stock, $0.0001 par value (the "Class A Common Stock") of ProKidney Corp (the "Issuer" or "ProKidney"). Capitalized terms used but not otherwise defined in this Second Amendment have the meanings ascribed to such terms in the Original Schedule 13D. This Second Amendment supplements Item 4 and amends and restates Items 5(a)-(c) as set forth below.

**Item 4. Purpose of Transaction**

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.

**Item 5. Interest in Securities of the Issuer**

**(a)**
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.

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

**(c)**
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.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Carlos Slim Helu

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Carlos Slim Domit

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Marco Antonio Slim Domit

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Patrick Slim Domit

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Maria Soumaya Slim Domit

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Vanessa Paola Slim Domit

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Johanna Monique Slim Domit

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Control Empresarial de Capitales S.A. de C.V.

**Signature:** /s/ Victor Manuel Gutierrez Lopez

**Name/Title:** Victor Manuel Gutierrez Lopez, Attorney in Fact*

**Date:** 04/30/2026