Summit Therapeutics Inc.
Research score, not a recommendation.
Market data
Live quote and chart from Yahoo Finance, loaded through this server. Insider purchases are marked on the chart.
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same price, one day All 7 purchases were at $0.97 on 2022-08-16. That pattern also occurs in IPO or conversion subscriptions, which are not open-market conviction buying.
Why this score
Research score: a weighted blend of the five factors, times the routine and offering discounts, minus the selling penalty.
Why are they buying?
No explanation has been generated for this cluster. The filings in the table below are the primary evidence.
Stock Price & Insider Purchase History
Daily close price with open-market insider purchases plotted over time
Loading price history…
| Date | Insider | Role | Shares | Price | Value | Flags | Filing |
|---|---|---|---|---|---|---|---|
| 2022-08-16 | DUGGAN ROBERT W 5 purchases with a 63-day result · median +16.7% | CEO | 94,849,203 | $0.97 | $92.0M | SEC filing for DUGGAN ROBERT W (opens in a new tab) | |
| 2022-08-16 | Zanganeh Maky 8 purchases with a 63-day result · median +18.1% | CEO | 5,809,132 | $0.97 avg | $5.6M | ||
| 2022-08-16 | Zanganeh Maky | 1,030,925 | $0.97 | $1,000.0K | SEC filing for Zanganeh Maky (opens in a new tab) | ||
| 2022-08-16 | Zanganeh Maky | 4,593,777 | $0.97 | $4.5M | SEC filing for Zanganeh Maky (opens in a new tab) | ||
| 2022-08-16 | Zanganeh Maky | 184,430 | $0.97 | $178.9K | SEC filing for Zanganeh Maky (opens in a new tab) | ||
| 2022-08-16 | Dhingra Ankur 3 purchases with a 63-day result · median +66.7% | CFO | 49,242 | $0.97 avg | $47.8K | ||
| 2022-08-16 | Dhingra Ankur | 11,557 | $0.97 | $11.2K | SEC filing for Dhingra Ankur (opens in a new tab) | ||
| 2022-08-16 | Dhingra Ankur | 24,658 | $0.97 | $23.9K | SEC filing for Dhingra Ankur (opens in a new tab) | ||
| 2022-08-16 | Dhingra Ankur | 13,027 | $0.97 | $12.6K | SEC filing for Dhingra Ankur (opens in a new tab) | ||
| Total | $97.7M | ||||||
Other buying runs at SMMT
A run ends after a pause in the buying, so one company can have several. Returns are the stock's return minus its benchmark's (IWM for small companies, SPY otherwise), from the first open after the run became a cluster. Past results, not a forecast.
After this run became a cluster: 21 days +13.4%63 days -17.0%126 days +78.5%
| Window | Insiders | Total | Score | 21 days | 63 days | 126 days | Status |
|---|---|---|---|---|---|---|---|
| 2026-06-04 → 2026-06-12 | 3 | $103.6M | 81 | +3.6% | +12.9% | – | active |
| 2025-10-21 | 3 | $11.0M | 71 | -9.1% | -23.1% | +1.2% | closed |
| 2023-03-06 → 2023-03-08 | 3 | $437.8M | 76 | +3.0% | +16.7% | -1.0% | closed |