Robert W Duggan insider trades: Summit Therapeutics (SMMT) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Robert reports to the SEC
Open-market buys and sales
157 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | SMMT | ↑ Buy | 3,810,000 | $13.12 | $50.0M | Direct | Jun 12, 2026 (0d) |
| Jun 4, 2026 | SMMT | ↑ Buy | 100,000 | $14.60 | $1.5M | By the Mahkam Zanganeh Revocable Trust, | Jun 4, 2026 (0d) |
| May 11, 2026 | PLSE | ↑ Buy | 660,233 | $19.69 | $13.0M | Direct | May 15, 2026 (4d) |
| May 11, 2026 | PLSE | ↑ Buy | 660,233 | $19.69 | $13.0M | Direct | May 11, 2026 (0d) |
| Oct 21, 2025 | SMMT | ↑ Buy | 26,680 | $18.74 | $500K | Immediate family member of Spouse | Oct 23, 2025 (2d) |
| Sep 11, 2025 | SMMT | ↑ Buy | 338,394 | $17.69 | $6.0M | Direct | Sep 11, 2025 (0d) |
| Sep 10, 2025 | PLSE | ↑ Buy | 192,599 | $14.48 | $2.8M | Direct | Sep 12, 2025 (2d) |
| Dec 13, 2024 | PLSE | ↑ Buy | 55,256 | $17.18 | $949K | Direct | Dec 17, 2024 (4d) |
| Dec 12, 2024 | PLES | ↑ Buy | 45,404 | $17.13 | $778K | Direct | Dec 17, 2024 (5d) |
| Dec 11, 2024 | PLSE | ↑ Buy | 56,054 | $17.35 | $972K | Direct | Dec 13, 2024 (2d) |
| Dec 12, 2023 | PLSE | ↑ Buy | 17,999 | $9.15 | $165K | Direct | Dec 14, 2023 (2d) |
| Dec 11, 2023 | PLSE | ↑ Buy | 90,118 | $9.36 | $844K | Direct | Dec 13, 2023 (2d) |
| Dec 8, 2023 | PLSE | ↑ Buy | 116,656 | $9.54 | $1.1M | Direct | Dec 12, 2023 (4d) |
| Dec 7, 2023 | PLSE | ↑ Buy | 74,852 | $9.19 | $688K | Direct | Dec 11, 2023 (4d) |
| Dec 6, 2023 | PLSE | ↑ Buy | 82,813 | $9.06 | $750K | Direct | Dec 8, 2023 (2d) |
| Dec 5, 2023 | PLSE | ↑ Buy | 66,021 | $9.34 | $617K | Indirect | Dec 7, 2023 (2d) |
| Dec 4, 2023 | PLSE | ↑ Buy | 27,000 | $10.38 | $280K | Indirect | Dec 6, 2023 (2d) |
| Dec 1, 2023 | PLSE | ↑ Buy | 45,600 | $9.07 | $414K | Indirect | Dec 5, 2023 (4d) |
| Nov 30, 2023 | PLSE | ↑ Buy | 152,944 | $9.06 | $1.4M | Indirect | Dec 4, 2023 (4d) |
| Nov 29, 2023 | PLSE | ↑ Buy | 158,600 | $9.44 | $1.5M | Direct | Dec 1, 2023 (2d) |
| Nov 29, 2023 | PLSE | ↑ Buy | 60,000 | $9.21 | $553K | Indirect | Dec 1, 2023 (2d) |
| Nov 28, 2023 | PLSE | ↑ Buy | 124,397 | $8.98 | $1.1M | Direct | Nov 30, 2023 (2d) |
| Nov 17, 2023 | PLSE | ↑ Buy | 20,241 | $6.10 | $123K | Direct | Nov 20, 2023 (3d) |
| May 9, 2023 | PLSE | ↑ Buy | 10,022,937 | $6.51 | $65.2M | Direct | May 10, 2023 (1d) |
| Mar 6, 2023 | SMMT | ↑ Buy | 376,489,880 | $1.05 | $395.3M | Direct | Mar 8, 2023 (2d) |
| Aug 16, 2022 | SMMT | ↑ Buy | 94,849,203 | $0.97 | $92.0M | Direct | Aug 18, 2022 (2d) |
| Jun 30, 2021 | PLSE | ↑ Buy | 3,048,780 | $16.40 | $50.0M | Direct | Jul 2, 2021 (2d) |
| May 12, 2021 | SMMT | ↑ Buy | 11,365,921 | $5.24 | $59.6M | Direct | May 14, 2021 (2d) |
| Nov 6, 2020 | SMMT | ↑ Buy | 14,071,856 | $3.34 | $47.0M | Direct | Nov 10, 2020 (4d) |
| Mar 20, 2019 | AKAO | ↓ Sell | 1,277,888 | $0.54 | $685K | Direct | Mar 20, 2019 (0d) |
| Mar 13, 2019 | AKAO | ↓ Sell | 2,354,007 | $0.60 | $1.4M | Direct | Mar 13, 2019 (0d) |
| Dec 11, 2018 | AKAO | ↑ Buy | 743,348 | $1.62 | $1.2M | Direct | Dec 12, 2018 (1d) |
| Dec 7, 2018 | AKAO | ↑ Buy | 22,431 | $1.40 | $31K | Direct | Dec 11, 2018 (4d) |
| Nov 27, 2018 | AKAO | ↑ Buy | 157,760 | $1.79 | $282K | Direct | Nov 27, 2018 (0d) |
| Nov 20, 2018 | AKAO | ↑ Buy | 231,495 | $1.93 | $447K | Direct | Nov 23, 2018 (3d) |
| Nov 19, 2018 | AKAO | ↑ Buy | 4,648 | $1.62 | $8K | Direct | Nov 20, 2018 (1d) |
| May 11, 2018 | PLSE | ↑ Buy | 21,353 | $23.16 | $495K | Direct | May 15, 2018 (4d) |
| May 3, 2018 | AKAO | ↑ Buy | 846,625 | $11.31 | $9.6M | Direct | May 7, 2018 (4d) |
| May 3, 2018 | AKAO | ↑ Buy | 130,255 | $11.46 | $1.5M | Indirect | May 7, 2018 (4d) |
| Apr 27, 2018 | AKAO | ↑ Buy | 230,096 | $12.98 | $3.0M | Direct | Apr 27, 2018 (0d) |
| Apr 23, 2018 | AKAO | ↑ Buy | 468,337 | $13.06 | $6.1M | Direct | Apr 23, 2018 (0d) |
| Apr 4, 2018 | AKAO | ↑ Buy | 91,461 | $12.46 | $1.1M | Direct | Apr 4, 2018 (0d) |
| Mar 28, 2018 | AKAO | ↑ Buy | 30,000 | $12.44 | $373K | Direct | Mar 30, 2018 (2d) |
| Mar 20, 2018 | AKAO | ↑ Buy | 36,300 | $11.12 | $404K | Direct | Mar 21, 2018 (1d) |
| Mar 15, 2018 | AKAO | ↑ Buy | 49,660 | $11.36 | $564K | Direct | Mar 16, 2018 (1d) |
| Mar 12, 2018 | AKAO | ↑ Buy | 70,000 | $11.40 | $798K | Direct | Mar 13, 2018 (1d) |
| Mar 2, 2018 | AKAO | ↑ Buy | 527,396 | $10.31 | $5.4M | Direct | Mar 2, 2018 (0d) |
| Feb 14, 2018 | AKAO | ↑ Buy | 10,000 | $10.96 | $110K | Direct | Feb 15, 2018 (1d) |
| Jan 5, 2018 | AKAO | ↑ Buy | 65,000 | $11.37 | $739K | Direct | Jan 5, 2018 (0d) |
| Dec 18, 2017 | AKAO | ↑ Buy | 95,012 | $11.13 | $1.1M | Direct | Dec 20, 2017 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other SMMT insiders
Open-market trades in the last 12 months
About Robert W Duggan's insider trades
Robert W Duggan is Co-Chief Executive Officer at Summit Therapeutics (SMMT). Since Aug 1, 2005, Robert has reported 95 open-market purchases worth $931.4M and 62 sales worth $154.4M on SEC Form 4. In the last 12 months: 4 buys ($77.4M).
Their filings also include grants and awards (33 filings), option exercises (32 filings), gifts (24 filings), other transactions (13 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 SMMT insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.