Two C-suite insiders at Aktis Oncology (COO and CMO) executed near-simultaneous option-exercise-and-sell transactions on July 8, 2026, selling a combined ~$2.78M in open-market shares following derivative exercises. Total open-market sales from the cluster (~$2.78M) represent ~0.17% of the company's $1.6B market cap, falling in the modest-proportionality band. While the timing and C-suite composition merit attention, the sales are entirely tied to tax-withholding and cashless exercise mechanics common to equity compensation — not raw conviction selling — and the dollar magnitude is well below the 0.5% threshold for significant action.
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Executive Summary
Two C-suite insiders at Aktis Oncology (COO and CMO) executed near-simultaneous option-exercise-and-sell transactions on July 8, 2026, selling a combined ~$2.78M in open-market shares following derivative exercises. Total open-market sales from the cluster (~$2.78M) represent ~0.17% of the company's $1.6B market cap, falling in the modest-proportionality band. While the timing and C-suite composition merit attention, the sales are entirely tied to tax-withholding and cashless exercise mechanics common to equity compensation — not raw conviction selling — and the dollar magnitude is well below the 0.5% threshold for significant action.
Key Financial Metrics
Key Facts
- COO Shulamit Ron-Bigger exercised 50,000 options at $0 and 50,000 options at $3.66; sold 50,000 shares in three open-market trades at weighted avg ~$27.74, netting ~$1.39M
- CMO Czibere Akos exercised 50,000 options at $0; sold 50,000 shares in three open-market trades at weighted avg ~$27.76, netting ~$1.39M
- Combined cluster open-market sale proceeds: ~$2.78M — ~0.17% of $1.6B market cap
- All sales occurred same day (July 8) and followed identical 'exercise then sell' patterns, consistent with cashless option exercises and tax withholding
Financial Impact
~$2.78M in aggregate open-market sales by two C-suite insiders; ~0.17% of market cap
Risk Factors
- Same-day cluster of C-suite option-exercise-and-sell activity could be misinterpreted by the market as informed selling, creating near-term selling pressure
- Historical AKTS reports show negative average alpha at T+20 (-1.89% vs SPY) and a 40% T+20 win rate across the last 5 settled calls, suggesting prior event reads have underperformed
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-AKTS-1783678297483 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 15, 2026 6w ago | Institutional Cluster | $24.72 $22.41 | ▼ −9.34% | ▼ −7.37% | $18.11 (−26.74%) |
Jul 10, 2026 12w ago | Insider Cluster | $27.88 $24.13 | ▼ −13.45% | ▼ −15.88% | $18.11 (−35.04%) |
May 21, 2026 19w ago | Press Release | $20.34 $24.48 | ▲ +20.35% | ▲ +21.77% | $18.11 (−10.96%) |
May 11, 2026 20w ago | 8-K | $19.73 $18.58 | ▼ −5.83% | ▼ −4.10% | $18.11 (−8.21%) |
Apr 21, 2026 23w ago | Press Release | $22.00 $18.50 | ▼ −15.91% | ▼ −19.07% | $18.11 (−17.68%) |
Mar 30, 2026 26w ago | Press Release | $17.89 $18.87 | ▲ +5.48% | ▼ −3.94% | $18.11 (+1.23%) |
US Market Status
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