Prokidney Corp.

11/03/2026 | Press release | Distributed by Public on 11/03/2026 17:52

Statement of Changes in Beneficial Ownership (Form 4)

FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden hours per response... 0.5
(Print or Type Responses)
1. Name and Address of Reporting Person *
Culleton Bruce
2. Issuer Name and Ticker or Trading Symbol
PROKIDNEY CORP. [PROK]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Executive Officer
(Last) (First) (Middle)
C/O PROKIDNEY CORP, 2000 FRONTIS PLAZA BLVD, SUITE 250
3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026
(Street)
WINSTON SALEM, NC 27103
4. If Amendment, Date Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City) (State) (Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee stock option (right to buy) $1.69 11/02/2026 A 500,000 (1) 12/03/2033 Class A Common Stock 500,000 $ 0 500,000 D

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Culleton Bruce
C/O PROKIDNEY CORP
2000 FRONTIS PLAZA BLVD, SUITE 250
WINSTON SALEM, NC 27103
X Chief Executive Officer

Signatures

/s/ Todd Girolamo, attorney in fact 11/03/2026
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) This performance-based stock option was granted on December 3, 2023. On November 2, 2026, the Company's board of directors certified achievement of the performance goal at 100%. In addition to the achievement of the performance goal, the options are subject to time vesting requirements under which 25% vested on November 2, 2026 and the remaining 75% vests in equal installments of 125,000 shares on each of February 15, 2027, May 15, 2027 and August 15, 2027.
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.
Prokidney Corp. published this content on November 03, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on November 03, 2026 at 23:52 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]