Tran Nguyen insider trades: Prothena Corp Public (PRTA) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Tran reports to the SEC
Open-market buys and sales
17 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 17, 2023 | PRTA | ↓ Sell | 95,000 | $73.99 | $7.0M | Direct | May 17, 2023 (0d) |
| Mar 15, 2023 | PRTA | ↓ Sell | 10,000 | $48.43 | $484K | Direct | Mar 17, 2023 (2d) |
| Feb 15, 2023 | PRTA | ↓ Sell | 10,000 | $53.34 | $533K | Direct | Feb 17, 2023 (2d) |
| Jan 18, 2023 | PRTA | ↓ Sell | 10,000 | $55.53 | $555K | Direct | Jan 20, 2023 (2d) |
| Dec 21, 2022 | PRTA | ↓ Sell | 10,000 | $58.97 | $590K | Direct | Dec 23, 2022 (2d) |
| Nov 23, 2022 | PRTA | ↓ Sell | 10,000 | $61.09 | $611K | Direct | Nov 25, 2022 (2d) |
| Oct 19, 2022 | PRTA | ↓ Sell | 10,000 | $56.44 | $564K | Direct | Oct 21, 2022 (2d) |
| Sep 21, 2022 | PRTA | ↓ Sell | 10,000 | $30.75 | $307K | Direct | Sep 23, 2022 (2d) |
| Aug 24, 2022 | PRTA | ↓ Sell | 10,000 | $30.17 | $302K | Direct | Aug 26, 2022 (2d) |
| Jul 22, 2022 | PRTA | ↓ Sell | 70,000 | $32.54 | $2.3M | Direct | Jul 22, 2022 (0d) |
| Mar 9, 2017 | PRTA | ↑ Buy | 1,000 | $51.32 | $51K | Direct | Mar 9, 2017 (0d) |
| Dec 9, 2015 | PRTA | ↓ Sell | 30,000 | $66.17 | $2.0M | Direct | Dec 11, 2015 (2d) |
| May 9, 2014 | PRTA | ↑ Buy | 2,200 | $19.61 | $43K | Direct | May 12, 2014 (3d) |
| Jan 2, 2013 | SOMX | ↓ Sell | 412 | $3.08 | $1K | Direct | Jan 3, 2013 (1d) |
| Jan 3, 2012 | SOMX | ↓ Sell | 3,300 | $0.48 | $2K | Direct | Jan 4, 2012 (1d) |
| Apr 12, 2011 | SOMX | ↓ Sell | 3,300 | $2.84 | $9K | Direct | Apr 14, 2011 (2d) |
| Sep 15, 2010 | SOMX | ↑ Buy | 2,500 | $3.89 | $10K | Direct | Sep 15, 2010 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other PRTA insiders
Open-market trades in the last 12 months
About Tran Nguyen's insider trades
Tran Nguyen is Chief Strategy Officer and CFO at Prothena Corp Public (PRTA). Since Sep 15, 2010, Tran has reported 3 open-market purchases worth $104K and 14 sales worth $15.3M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (30 filings), option exercises (12 filings), shares returned to the company (4 filings), other transactions (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 PRTA insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.