Christopher Y Chai insider trades: Principia Biopharma (PRNB) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Christopher reports to the SEC
Open-market buys and sales
11 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 18, 2020 | PRNB | ↓ Sell | 7,500 | $99.37 | $745K | Direct | Aug 20, 2020 (2d) |
| May 19, 2020 | PRNB | ↓ Sell | 7,500 | $65.10 | $488K | Direct | May 21, 2020 (2d) |
| Feb 18, 2020 | PRNB | ↓ Sell | 7,500 | $65.89 | $494K | Direct | Feb 20, 2020 (2d) |
| Sep 20, 2011 | MAPP | ↓ Sell | 32,000 | $15.38 | $492K | Direct | Sep 22, 2011 (2d) |
| Sep 20, 2010 | MAPP | ↓ Sell | 16,000 | $14.05 | $225K | Direct | Sep 22, 2010 (2d) |
| Jul 21, 2010 | MAPP | ↓ Sell | 16,000 | $12.71 | $203K | Direct | Jul 22, 2010 (1d) |
| May 20, 2010 | MAPP | ↓ Sell | 16,000 | $14.77 | $236K | Direct | May 21, 2010 (1d) |
| Mar 24, 2010 | MAPP | ↓ Sell | 16,000 | $16.60 | $266K | Direct | Mar 25, 2010 (1d) |
| Nov 2, 2009 | MAPP | ↓ Sell | 10,000 | $8.07 | $81K | Direct | Nov 4, 2009 (2d) |
| Oct 1, 2009 | MAPP | ↓ Sell | 10,000 | $10.26 | $103K | Direct | Oct 5, 2009 (4d) |
| Feb 9, 2009 | MAPP | ↓ Sell | 21 | $13.00 | $273 | Direct | Feb 11, 2009 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Christopher Y Chai's insider trades
Christopher Y Chai is Chief Financial Officer at Principia Biopharma (PRNB). Since Feb 9, 2009, Christopher has reported no open-market purchases and 11 sales worth $3.3M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include option exercises (13 filings), grants and awards (12 filings), shares returned to the company (2 filings), other transactions (2 filings). 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 PRNB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.