Charles W Newhall III insider trades: Supernus Pharmaceuticals (SUPN) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Charles reports to the SEC
and 22 more companies
Open-market buys and sales
118 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 9, 2025 | SUPN | ↓ Sell | 25,000 | $50.77 | $1.3M | Direct | Oct 10, 2025 (1d) |
| Aug 27, 2025 | SUPN | ↓ Sell | 3,588 | $45.01 | $161K | Direct | Aug 29, 2025 (2d) |
| Aug 25, 2025 | SUPN | ↓ Sell | 1,000 | $45.00 | $45K | Direct | Aug 27, 2025 (2d) |
| Aug 22, 2025 | SUPN | ↓ Sell | 1,412 | $45.00 | $64K | Direct | Aug 26, 2025 (4d) |
| Nov 11, 2024 | SUPN | ↓ Sell | 10,700 | $36.24 | $388K | Direct | Nov 12, 2024 (1d) |
| Nov 16, 2023 | SUPN | ↓ Sell | 2,500 | $28.01 | $70K | Direct | Nov 20, 2023 (4d) |
| Aug 13, 2012 | FIO | ↓ Sell | 2,622 | $25.87 | $68K | Direct | Aug 14, 2012 (1d) |
| Jul 31, 2012 | HPTX | ↑ Buy | 500,000 | $10.00 | $5.0M | See Note 1 | Aug 2, 2012 (2d) |
| May 4, 2012 | SUPN | ↑ Buy | 4,400,000 | $5.00 | $22.0M | See Note 2 | May 8, 2012 (4d) |
| Mar 7, 2012 | FOLD | ↑ Buy | 925,154 | $5.70 | $5.3M | See Note 4 | Mar 9, 2012 (2d) |
| Mar 7, 2012 | FOLD | ↑ Buy | 214,846 | $5.70 | $1.2M | See Note 2 | Mar 9, 2012 (2d) |
| Feb 29, 2012 | INWK | ↓ Sell | 455,360 | $11.42 | $5.2M | See Note 2 | Mar 1, 2012 (1d) |
| Feb 24, 2012 | INWK | ↓ Sell | 334,457 | $11.40 | $3.8M | See Note 2 | Feb 28, 2012 (4d) |
| Feb 23, 2012 | INWK | ↓ Sell | 308,060 | $11.69 | $3.6M | See Note 2 | Feb 24, 2012 (1d) |
| Nov 28, 2011 | FIO | ↓ Sell | 1,291,493 | $31.68 | $40.9M | See Note 1 | Nov 30, 2011 (2d) |
| Mar 10, 2011 | ARYX | ↓ Sell | 4,469,274 | $0.07 | $326K | Direct | Mar 14, 2011 (4d) |
| Aug 27, 2010 | GLUU | ↑ Buy | 750,000 | $1.00 | $750K | Direct | Aug 31, 2010 (4d) |
| Jun 30, 2010 | SNSS | ↑ Buy | 23,824,451 | $0.28 | $6.6M | Direct | Jul 2, 2010 (2d) |
| Oct 28, 2009 | INHX | ↑ Buy | 1,757,812 | $1.28 | $2.2M | See Note 2 | Oct 30, 2009 (2d) |
| Oct 28, 2009 | INHX | ↑ Buy | 585,937 | $1.28 | $750K | See Note 1 | Oct 30, 2009 (2d) |
| May 6, 2009 | FIRE | ↓ Sell | 476,797 | $11.78 | $5.6M | Direct | May 6, 2009 (0d) |
| May 4, 2009 | FIRE | ↓ Sell | 517,747 | $12.06 | $6.2M | Direct | May 5, 2009 (1d) |
| Mar 11, 2009 | PLIN | ↑ Buy | 15,219 | $0.49 | $7K | Direct | Mar 20, 2009 (9d) |
| Apr 23, 2008 | TNDM | ↓ Sell | 113,380 | $17.01 | $1.9M | Direct | Apr 24, 2008 (1d) |
| Apr 2, 2008 | TNDM | ↓ Sell | 1,370,629 | $17.01 | $23.3M | Direct | Apr 4, 2008 (2d) |
| Mar 10, 2008 | ZHNE | ↑ Buy | 132,167 | $1.11 | $146K | See Note 2 | Mar 10, 2008 (0d) |
| Mar 10, 2008 | ZHNE | ↑ Buy | 132,166 | $1.11 | $146K | See Note 1 | Mar 10, 2008 (0d) |
| Mar 5, 2008 | ZHNE | ↑ Buy | 89,850 | $1.08 | $97K | See Note 1 | Mar 5, 2008 (0d) |
| Mar 5, 2008 | ZHNE | ↑ Buy | 89,850 | $1.08 | $97K | See Note 2 | Mar 5, 2008 (0d) |
| Mar 3, 2008 | ZHNE | ↑ Buy | 165,864 | $1.12 | $186K | See Note 1 | Mar 3, 2008 (0d) |
| Mar 3, 2008 | ZHNE | ↑ Buy | 165,863 | $1.12 | $186K | See Note 2 | Mar 3, 2008 (0d) |
| Feb 27, 2008 | ZHNE | ↑ Buy | 112,053 | $1.13 | $127K | See Note 2 | Feb 27, 2008 (0d) |
| Feb 27, 2008 | ZHNE | ↑ Buy | 112,052 | $1.13 | $127K | See Note 1 | Feb 27, 2008 (0d) |
| Feb 22, 2008 | ZHNE | ↑ Buy | 114,276 | $1.08 | $124K | See Note 2 | Feb 22, 2008 (0d) |
| Feb 22, 2008 | ZHNE | ↑ Buy | 114,275 | $1.08 | $124K | See Note 1 | Feb 22, 2008 (0d) |
| Feb 19, 2008 | ZHNE | ↑ Buy | 149,370 | $1.13 | $169K | See Note 1 | Feb 19, 2008 (0d) |
| Feb 19, 2008 | ZHNE | ↑ Buy | 149,370 | $1.13 | $169K | See Note 2 | Feb 19, 2008 (0d) |
| Feb 13, 2008 | ZHNE | ↑ Buy | 169,600 | $1.09 | $184K | See Note 2 | Feb 13, 2008 (0d) |
| Feb 13, 2008 | ZHNE | ↑ Buy | 169,600 | $1.09 | $184K | See Note 1 | Feb 13, 2008 (0d) |
| Feb 8, 2008 | ZHNE | ↑ Buy | 160,820 | $1.11 | $178K | See Note 1 | Feb 8, 2008 (0d) |
| Feb 8, 2008 | ZHNE | ↑ Buy | 160,820 | $1.11 | $178K | See Note 2 | Feb 8, 2008 (0d) |
| Dec 4, 2007 | ZHNE | ↑ Buy | 8,622 | $1.25 | $11K | See Note 2 | Dec 5, 2007 (1d) |
| Dec 4, 2007 | ZHNE | ↑ Buy | 8,622 | $1.25 | $11K | See Note 1 | Dec 5, 2007 (1d) |
| Dec 3, 2007 | DDUP | ↓ Sell | 90,575 | $25.89 | $2.3M | Direct | Dec 5, 2007 (2d) |
| Nov 27, 2007 | ZHNE | ↑ Buy | 5,381 | $1.24 | $7K | See Note 1 | Nov 29, 2007 (2d) |
| Nov 27, 2007 | ZHNE | ↑ Buy | 5,381 | $1.24 | $7K | See Note 2 | Nov 29, 2007 (2d) |
| Nov 26, 2007 | ZHNE | ↑ Buy | 61,435 | $1.25 | $77K | See Note 1 | Nov 26, 2007 (0d) |
| Nov 26, 2007 | ZHNE | ↑ Buy | 61,435 | $1.25 | $77K | See Note 2 | Nov 26, 2007 (0d) |
| Nov 21, 2007 | DDUP | ↓ Sell | 965,385 | $25.89 | $25.0M | Direct | Nov 26, 2007 (5d) |
| Nov 20, 2007 | ZHNE | ↑ Buy | 97,100 | $1.25 | $121K | See Note 1 | Nov 20, 2007 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other SUPN insiders
Open-market trades in the last 12 months
About Charles W Newhall III's insider trades
Charles W Newhall III is a director at Supernus Pharmaceuticals (SUPN). Since May 5, 2005, Charles has reported 91 open-market purchases worth $77.8M and 27 sales worth $126.0M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include other transactions (45 filings), grants and awards (37 filings), conversions (18 filings), option exercises (9 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 SUPN insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.