James Coulston
CIK 1936203 · View on SEC EDGAR ↗
First SEC filing: July 13, 2022 · Latest: July 13, 2022
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 1, 2026 | PROK | A | 600,000 | — | — | 600,000 Direct | — | Acquired | (price as of 2026-08-21) |
| March 1, 2025 | PROK | A | 650,000 | — | — | 650,000 Direct | — | Acquired | (price as of 2026-08-21) |
| March 1, 2024 | PROK | A | 275,000 | — | — | 275,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Jan. 16, 2023 | PROK | A | 290,000 | — | — | 290,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 20, 2022 | PROK | A | 325,170 | — | — | 325,170 Direct | — | Acquired | (price as of 2026-08-21) |
| July 11, 2022 | PROK | A | 716,850 | — | — | 716,850 Direct | — | Acquired | (price as of 2026-08-21) |
| July 11, 2022 | PROK | A | 716,850 | — | — | 716,850 Direct | — | Acquired | (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 1, 2026 | PROK | Employee stock option (right to buy) | Class A Common Stock (600,000) | $2.24 | March 1, 2036 | 600,000 | Acquired |
| March 1, 2025 | PROK | Employee stock option (right to buy) | Class A Ordinary Shares (650,000) | $1.23 | March 1, 2035 | 650,000 | Acquired |
| March 1, 2024 | PROK | Employee stock option (right to buy) | Class A Ordinary Shares (275,000) | $1.61 | March 1, 2034 | 275,000 | Acquired |
| Jan. 16, 2023 | PROK | Employee stock option, right to buy | Class A Ordinary Shares (290,000) | $8.43 | Jan. 16, 2033 | 290,000 | Acquired |
| Oct. 20, 2022 | PROK | Employee stock option (right to buy) | Class A Ordinary Shares (325,170) | $10.33 | Oct. 20, 2032 | 325,170 | Acquired |
| July 11, 2022 | PROK | Common Units in ProKidney LP [F3] | Class A Ordinary Shares (716,850) | — | — | 716,850 | Acquired |
| July 11, 2022 | PROK | Class B Ordinary Shares | Class A Ordinary Shares (716,850) | — | — | 716,850 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 13, 2022 | PROK | No securities owned. | 0 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
PROK
CFO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $465,923 | — | — | $642,460 | $243,000 | — | $15,949 | $1,367,332 |
| 2023 | $420,000 | — | — | $1,753,456 | $100,464 | — | $12,688 | $2,286,608 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.