David Baltimore insider trades: Regulus Therapeutics (RGLS) 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




Open-market buys and sales
9 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 30, 2025 | RGLS | ↑ Buy | 19,610 | $1.06 | $21K | Direct | Jan 31, 2025 (1d) |
| May 31, 2017 | AMGN | ↓ Sell | 3,700 | $153.93 | $570K | Direct | Jun 2, 2017 (2d) |
| Apr 29, 2016 | AMGN | ↓ Sell | 3,312 | $157.21 | $521K | Direct | May 3, 2016 (4d) |
| Mar 2, 2015 | AMGN | ↓ Sell | 3,647 | $158.76 | $579K | Direct | Mar 3, 2015 (1d) |
| Aug 28, 2013 | AMGN | ↓ Sell | 4,582 | $109.66 | $502K | Direct | Aug 30, 2013 (2d) |
| Feb 28, 2013 | AMGN | ↓ Sell | 886 | $92.94 | $82K | Direct | Mar 1, 2013 (1d) |
| Dec 10, 2012 | AMGN | ↓ Sell | 6,800 | $89.00 | $605K | Direct | Dec 12, 2012 (2d) |
| Dec 5, 2008 | AMGN | ↓ Sell | 21,000 | $57.37 | $1.2M | Direct | Dec 8, 2008 (3d) |
| Nov 18, 2005 | AMGN | ↓ Sell | 30,000 | $82.97 | $2.5M | Direct | Nov 21, 2005 (3d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About David Baltimore's insider trades
David Baltimore is an insider at Regulus Therapeutics (RGLS). Since Nov 18, 2005, David has reported 1 open-market purchase worth $21K and 8 sales worth $6.6M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (39 filings), option exercises (9 filings), shares withheld for taxes (7 filings), shares returned to the company (4 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 RGLS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.