SMMT
Summit Therapeutics Inc. · Healthcare · Market cap $14.0B(Price slightly stale)
Insiders bought $103.6M net in the last 90 days ·0 sellers, 3 buyers· latest Form 4 filed Jun 12, 2026
Insider Buying
$114.6M
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Unique Insiders
4
in the rolling window
Latest filing
Jun 12, 2026
Zanganeh Mahkam
Summit Therapeutics Inc. (SMMT) has 10 SEC Form 4 filings (15 transaction rows) in the rolling window, disclosed by 4 distinct insiders. Most recent filing: Jun 12, 2026.
Inside the rolling window, 4 insiders at Summit Therapeutics Inc. reported 8 open-market purchases totaling $114.6M and no open-market sales. The most active filer is Co-Chief Executive Officer Zanganeh Mahkam with 3 filings. Insiders have net bought $103.6M over the trailing 6 months. The largest single insider purchase in this window was $50.0M by Co-Chief Executive Officer Zanganeh Mahkam on Jun 12, 2026.
- Industry:Biotechnology
- CEO:Robert W. Duggan
- Employees:265
- HQ:Miami, FL, US
- IPO:2015-03-05
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Co-Chief Executive Officer | Purchase | 3,810,000 | $50.0M | Jun 12 | +25.7% | SEC ↗ | |
| Co-Chief Executive Officer | Purchase | 3,810,000 | $50.0M | Jun 12 | +25.7% | SEC ↗ | |
Zanganeh MahkamFirst in 7 months | Co-Chief Executive Officer | Purchase | 100,000 | $1.5M | Jun 4 | +18.6% | SEC ↗ |
Soni Manmeet SinghFirst filing | COO and CFO | Purchase | 50,000 | $722K | Jun 4 | +18.6% | SEC ↗ |
| Co-Chief Executive Officer | Purchase | 100,000 | $1.5M | Jun 4 | +18.6% | SEC ↗ | |
DUGGAN ROBERT WFirst filing | Co-Chief Executive Officer | Purchase | 26,680 | $500K | Oct 23 | -6.1% | SEC ↗ |
Zanganeh MahkamFirst filing | Co-Chief Executive Officer | Purchase | 26,680 | $500K | Oct 23 | -6.1% | SEC ↗ |
Xia YuFirst filing | Director | Purchase | 533,617 | $10.0M | Oct 23 | -6.1% | SEC ↗ |
Frequently asked questions
How many SEC Form 4 insider filings does SMMT have?
Summit Therapeutics Inc. (SMMT) has 10 SEC Form 4 filings (15 transaction rows) in the rolling 365-day window, disclosed by 4 distinct insiders. Most recent filing: Jun 12, 2026.
When was the most recent SEC Form 4 filing for SMMT?
The most recent Form 4 filing for SMMT on Tracefour is dated Jun 12, 2026.
Who is the most active insider at SMMT?
The most active SEC Form 4 filer at SMMT in the rolling window is Co-Chief Executive Officer Zanganeh Mahkam, with 3 filings.
What is the net insider flow at SMMT over the last 6 months?
Over the trailing 180 days, insiders at SMMT have net bought $103.6M based on SEC Form 4 disclosures.
What was the largest insider purchase at SMMT?
The largest single insider open-market purchase at SMMT in the rolling window was $50.0M by Co-Chief Executive Officer Zanganeh Mahkam on 2026-06-12.
What is the total insider buy and sell value at SMMT in the current window?
Inside the rolling window, insiders at SMMT bought $114.6M and sold $0 based on SEC Form 4 filings.
Can I get alerts for SMMT insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Summit Therapeutics Inc. (SMMT). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Summit Therapeutics Inc. is in the Healthcare sector.