James Coulston

CIK: 0001936203

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (100.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

PROK

PROKIDNEY CORP.

Officer

Discretionary Trading P&L

Holdings

Transaction History (2 total)

PROK
PROKIDNEY CORP.
Mar 1, 2026
Award(A)
Employee stock option (right to buy)
Direct
600K shares-
PROK
PROKIDNEY CORP.
Mar 1, 2025
Award(A)
Employee stock option (right to buy)
Direct
650K shares-

		Type	Shares	Price		Ownership
Mar 1, 2026	PROK PROKIDNEY CORP.	Award(A) Employee stock option (right to buy)	600,000	-	-	Direct
Mar 1, 2025	PROK PROKIDNEY CORP.	Award(A) Employee stock option (right to buy)	650,000	-	-	Direct

1-2 of 2 transactions

About Coulston James

Coulston James (SEC CIK 0001936203) files insider reports with the SEC as Chief Financial Officer of PROKIDNEY CORP. (PROK).

Signal8 holds 2 ownership filings by Coulston James, all Form 4s, filed between Mar 4, 2025 and Mar 3, 2026. Those filings report 2 transactions, from Mar 1, 2025 to Mar 1, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Coulston James's filings is in WINSTON-SALEM, NC.

Recent filings by Coulston James

Mar 1, 2026: Grant or award of PROK derivative securities (Form 4, code A).
Mar 1, 2025: Grant or award of PROK derivative securities (Form 4, code A).

Other insiders filing for PROKIDNEY CORP. (PROK)

Weber Darin J., Chief Regulatory Officer
Pereira Brian JG, Director
Locke Kenneth Thomas, Chief Technical Officer
Girolamo Todd C, Chief Legal Officer
Lotvin Alan, Director
Jimenez Santos Jose Ignacio, Director

How to read Form 4 transaction codes