Brian JG Pereira insider trades: Prokidney (PROK) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Brian reports to the SEC
and 1 more company
Open-market buys and sales
19 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 20, 2026 | PROK | ↓ Sell | 675,235 | $1.41 | $952K | By Brian J. G. Pereira 2012 Irrevocable | Aug 20, 2026 (0d) |
| Aug 20, 2026 | PROK | ↓ Sell | 81,929 | $1.41 | $116K | Direct | Aug 20, 2026 (0d) |
| Nov 13, 2025 | PROK | ↓ Sell | 675,234 | $2.49 | $1.7M | By Brian J. G. Pereira 2012 Irrevocable | Nov 14, 2025 (1d) |
| Nov 13, 2025 | PROK | ↓ Sell | 81,928 | $2.49 | $204K | Brian J. G. Pereira 2004 Trust | Nov 14, 2025 (1d) |
| Dec 20, 2013 | BIOD | ↓ Sell | 4,734 | $2.26 | $11K | Direct | Dec 23, 2013 (3d) |
| Dec 16, 2011 | BIOD | ↓ Sell10b5-1 | 15,000 | $0.65 | $10K | Direct | Dec 20, 2011 (4d) |
| Nov 10, 2009 | AMAG | ↓ Sell | 197,044 | $43.58 | $8.6M | Direct | Nov 12, 2009 (2d) |
| Nov 9, 2009 | AMAG | ↓ Sell | 32,967 | $44.82 | $1.5M | By self as Trustee | Nov 12, 2009 (3d) |
| Aug 5, 2009 | AMAG | ↓ Sell | 5,000 | $45.00 | $225K | Direct | Aug 5, 2009 (0d) |
| Feb 12, 2008 | BIOD | ↑ Buy | 30,000 | $15.50 | $465K | Direct | Feb 14, 2008 (2d) |
| Feb 8, 2008 | AMAG | ↓ Sell | 5,000 | $54.66 | $273K | Direct | Feb 11, 2008 (3d) |
| Oct 1, 2007 | AMAG | ↓ Sell | 10,000 | $57.75 | $578K | Direct | Oct 2, 2007 (1d) |
| Sep 5, 2007 | AMAG | ↓ Sell | 20,000 | $55.05 | $1.1M | Direct | Sep 6, 2007 (1d) |
| Aug 2, 2007 | AMAG | ↓ Sell | 20,000 | $53.39 | $1.1M | Direct | Aug 2, 2007 (0d) |
| Jul 5, 2007 | AMAG | ↓ Sell | 20,000 | $58.59 | $1.2M | Direct | Jul 5, 2007 (0d) |
| Jun 12, 2007 | AMAG | ↓ Sell | 3,157 | $60.95 | $192K | Direct | Jun 20, 2007 (8d) |
| Jun 4, 2007 | AMAG | ↓ Sell | 15,000 | $63.11 | $947K | Direct | Jun 6, 2007 (2d) |
| May 4, 2007 | AMAG | ↓ Sell | 20,000 | $64.42 | $1.3M | Direct | May 4, 2007 (0d) |
| Apr 17, 2007 | AMAG | ↓ Sell | 15,785 | $69.64 | $1.1M | Direct | Apr 18, 2007 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Brian JG Pereira's insider trades
Brian JG Pereira is an insider at Prokidney (PROK). Since Apr 17, 2007, Brian has reported 1 open-market purchase worth $465K and 18 sales worth $21.0M on SEC Form 4. In the last 12 months: 4 sales ($3.0M).
1 sale (0% of the value sold) was made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so it says little about how the insider sees the stock today.
Their filings also include grants and awards (33 filings), option exercises (12 filings), conversions (5 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every PROK insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.