SMMT Summit Therapeutics Inc.
Price Chart
Executive Summary
Both co-CEOs and the COO/CFO of Summit Therapeutics made open-market purchases totaling $3.28M on June 4, 2026, at ~$14.50-$14.60 per share. This is a rare cluster of C-suite insider buying at a $11.7B market cap company, representing ~0.03% of market cap — a small but symbolically strong signal from the top executives.
Key Financial Metrics
Actionable Insight
The simultaneous open-market buying by both co-CEOs and the CFO is a rare and credible bullish signal at a large-cap biotech. While the dollar amount is small relative to market cap, the unanimity and C-suite participation carry disproportionate weight. Monitor for upcoming catalysts (pipeline updates, partnership news, or earnings) that may have motivated this cluster. The cross-filing amplifiers (cluster + earnings/agreement/press context) suggest elevated odds of near-term positive news flow.
Key Facts
- Both co-CEOs (Robert Duggan and Mahkam Zanganeh) each purchased 100,000 shares ($1.46M each) on June 4, 2026
- COO/CFO Manmeet Singh purchased 25,000 shares ($362K) on the same day
- Total cluster value: $3.28M in open-market purchases
- All purchases were open-market (code P), not option exercises or grants
- Cluster represents ~0.03% of SMMT's $11.7B market cap
- No insider sales in the cluster window
Financial Impact
$3.28M in insider purchases, ~0.03% of market cap
Risk Factors
- Insider buying at this scale (~0.03% of market cap) is not economically material — could be signaling confidence without moving the stock
- Historical calibration shows past SMMT reports had negative T+20 outcomes (avg -19%), suggesting the stock may not follow this signal
- No specific catalyst identified — buying could be pre-arranged or opportunistic rather than event-driven
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-SMMT-1780611038028 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 12, 2026
today
|
Insider Cluster
| $13.60 awaiting T+1 | awaiting T+1 | — | $14.01 (+3.05%) |
|
Jun 12, 2026
today
|
Institutional Cluster
| $13.08 awaiting T+1 | awaiting T+1 | — | $14.01 (+7.15%) |
|
Jun 11, 2026
1d ago
|
Institutional Cluster
| $13.03 awaiting T+1 | awaiting T+1 | — | $14.01 (+7.52%) |
|
Jun 9, 2026
3d ago
|
S-3ASR
| $14.29 awaiting T+1 | awaiting T+1 | — | $14.01 (+1.93%) |
|
Jun 4, 2026
8d ago
|
Insider Cluster
| $15.01 awaiting T+1 | awaiting T+1 | — | $14.01 (−6.66%) |
|
Jun 4, 2026
8d ago
|
Insider Cluster
| $15.30 awaiting T+1 | awaiting T+1 | — | $14.01 (−8.43%) |
|
Jun 3, 2026
9d ago
|
8-K
| $15.07 $14.84 | ▼ −1.53% | ▼ −1.93% | $14.01 (−7.03%) |
|
Jun 1, 2026
11d ago
|
8-K
| $15.71 $14.86 | ▼ −5.41% | ▼ −5.56% | $14.01 (−10.82%) |
|
Apr 30, 2026
6w ago
|
8-K
| $16.12 $16.98 | ▲ +5.37% | ▲ +5.71% | $14.01 (−13.06%) |
|
Apr 17, 2026
8w ago
|
DEFA14A
| $25.12 $26.38 | ▲ +5.02% | ▲ +5.67% | $14.01 (−44.23%) |
US Market Status
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