David S Tierney insider trades: Catalyst Pharmaceuticals (CPRX) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where David 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 27, 2025 | CPRX | ↓ Sell | 26,000 | $20.20 | $525K | Direct | Aug 28, 2025 (1d) |
| Aug 21, 2024 | CPRX | ↓ Sell | 15,000 | $20.10 | $301K | Direct | Aug 23, 2024 (2d) |
| Apr 8, 2024 | CPRX | ↓ Sell | 25,000 | $15.68 | $392K | Direct | Apr 10, 2024 (2d) |
| Dec 12, 2023 | CPRX | ↓ Sell | 50,000 | $13.32 | $666K | Direct | Dec 14, 2023 (2d) |
| Apr 5, 2023 | CPRX | ↓ Sell | 30,000 | $16.83 | $505K | Direct | Apr 7, 2023 (2d) |
| Mar 9, 2023 | ZVRA | ↑ Buy | 5,000 | $4.15 | $21K | Direct | Mar 13, 2023 (4d) |
| Aug 22, 2022 | CPRX | ↓ Sell | 20,000 | $14.16 | $283K | Direct | Aug 23, 2022 (1d) |
| May 25, 2022 | KMPH | ↑ Buy | 2,000 | $4.39 | $9K | Direct | May 26, 2022 (1d) |
| Nov 30, 2021 | KMPH | ↑ Buy | 2,000 | $7.79 | $16K | Direct | Nov 30, 2021 (0d) |
| Aug 13, 2021 | CPRX | ↓ Sell | 50,000 | $6.08 | $304K | Direct | Aug 17, 2021 (4d) |
| Aug 18, 2020 | KMPH | ↑ Buy | 10,000 | $0.65 | $7K | Direct | Aug 18, 2020 (0d) |
| Sep 19, 2018 | BPMX | ↑ Buy | 100,000 | $0.20 | $20K | Direct | Sep 20, 2018 (1d) |
| Mar 20, 2017 | KMPH | ↑ Buy | 1,000 | $4.20 | $4K | Direct | Mar 21, 2017 (1d) |
| Apr 21, 2015 | KMPH | ↑ Buy | 5,000 | $11.00 | $55K | Direct | May 12, 2015 (21d) |
| Oct 23, 2013 | CPRX | ↑ Buy | 8,000 | $2.03 | $16K | Direct | Oct 25, 2013 (2d) |
| May 29, 2012 | CPRX | ↑ Buy | 20,000 | $0.58 | $12K | Direct | May 31, 2012 (2d) |
| Mar 6, 2009 | CPRX | ↑ Buy | 3,000 | $1.55 | $5K | Direct | Mar 9, 2009 (3d) |
| May 25, 2006 | VLRX | ↑ Buy | 1,000 | $7.73 | $8K | Direct | May 25, 2006 (0d) |
| Feb 2, 2006 | VLRX | ↑ Buy | 5,500 | $9.00 | $50K | Direct | Feb 2, 2006 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other CPRX insiders
Open-market trades in the last 12 months
About David S Tierney's insider trades
David S Tierney is a director at Catalyst Pharmaceuticals (CPRX). Since Feb 2, 2006, David has reported 12 open-market purchases worth $221K and 7 sales worth $3.0M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (52 filings), option exercises (29 filings), shares returned to the company (2 filings), shares withheld for taxes (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 CPRX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.