Bruce Culleton - 01 Mar 2026 Form 4 Insider Report for PROKIDNEY CORP. (PROK)

Role: Chief Executive Officer, Director
Signature: /s/ James Coulston, attorney in fact
Issuer symbol: PROK
Transactions as of: 01 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 03 Mar 2026, 07:57:59 UTC
Previous filing: 04 Mar 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Culleton Bruce	Chief Executive Officer, Director	C/O PROKIDNEY CORP, 2000 FRONTIS PLAZA BLVD, SUITE 250, WINSTON SALEM	/s/ James Coulston, attorney in fact	03 Mar 2026	0001983742

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PROK	Employee stock option (right to buy)	Award	$0	+3,000,000		$0.000000	3,000,000	01 Mar 2026	Class A Common Stock	3,000,000	$2.24	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The option vests in substantially equal monthly installments over the four year period beginning on March 1, 2026.