| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Regulatory Officer | SVP of Regulatory Development
1 company
Darin J. Weber is Chief Regulatory Officer at PROK. Darin J. Weber's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $214K at current prices.
Our model assigns Darin J. Weber a strong insider score of 80/100, based on 10 past trades. Over a 12-month horizon, 80.0% of those trades were profitable, with an average 12-month return of +47.4%.
The PROK filings lean toward selling, a net 274,073 shares.
Darin J. Weber has 17 Form 4 filings on record from July 2022 to October 2026, all as Chief Regulatory Officer at ProKidney (PROK), 2022–2026.
The 21 reported transactions were 10 open-market sales, 8 option or other derivative awards and 3 conversions.
Counted by filing, the open-market trades come to no purchases and 8 sales worth about $707K.
The largest open-market sale was 103,480 shares of PROK at an average $3.02 on July 8, 2025, about $313K. Twelve months later PROK was down 51%.
All 8 sales since April 2023 were made under a Rule 10b5-1 trading plan, set up in advance.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Jul 8, 2025 | PROK Prokidney Corp. | Chief Regulatory Officer | Sell10b5-1 | 103,480 | $3.02 | $312,509.60 | -100% | -22.3% | -50.7% | |
| Sep 19, 2024 | PROK Prokidney Corp. | Chief Regulatory Officer | Sell10b5-1 | 16,412 | $2.50 | $41,030.00 | -13.7% | -35.8% | +12.1% | |
| Jul 26, 2024 | PROK Prokidney Corp. | Chief Regulatory Officer | Sell10b5-1 | 826 | $2.50 | $2,065.00 | -0.7% | -29.6% | +34.3% | |
| Jun 18, 2024 | PROK Prokidney Corp. | Chief Regulatory Officer | Sell10b5-1 | 17,238 | $2.82 | $48,616.33 | -12.5% | -12.7% | -74.0% | |
| May 20, 2024 | PROK Prokidney Corp. | Chief Regulatory Officer | Sell10b5-1 | 17,238 | $4.08 | $70,386.20 | -11.1% | -38.1% | -79.6% | |
| Apr 22, 2024 | PROK Prokidney Corp. | SVP of Regulatory Development | Sell10b5-1 | 17,238 | $2.51 | $43,343.27 | -10.0% | -21.3% | -72.5% | |
| Apr 16, 2024 | PROK Prokidney Corp. | SVP of Regulatory Development | Sell10b5-1 | 17,238 | $2.50 | $43,095.00 | -9.1% | -12.1% | -70.7% | |
| Apr 12, 2024 | PROK Prokidney Corp. | SVP of Regulatory Development | Sell10b5-1 | 84,403 | $1.73 | $146,005.19 | -30.8% | +37.1% | -58.2% |