The C-suite cluster buy is a modest bullish signal despite the small dollar amount — CFO and supply chain head both buying within 48 hours suggests internal confidence not yet priced. Monitor for any upcoming 8-K or press release that could explain the timing.
Price Chart
Executive Summary
Two C-suite insiders at Amrize Ltd (CFO and Chief Supply Chain Officer) made open-market purchases totaling $291K over a two-day window. While the dollar amount is trivial relative to the $25.4B market cap (0.001%), the fact that both are senior executives buying on the same dates amplifies the signal per academic literature.
Key Financial Metrics
Key Facts
- CFO Oran Baris purchased 6,000 shares total ($283,530) on Aug 11-12
- Chief Supply Chain Officer Gross Mario purchased 3,568 shares ($166,252) on Aug 11
- Total cluster value: $291K — 0.001% of $25.4B market cap
- No insider sales in the cluster window
- Cluster buys by C-suite are the strongest insider signal per Cohen/Malloy/Pomorski (2012)
Financial Impact
$291K in insider purchases, negligible relative to $25.4B market cap
Risk Factors
- Dollar amount is only 0.001% of market cap — could be routine portfolio rebalancing
- No CFO/CEO participation beyond the CFO
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-AMRZ-1786644294896 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 3, 2026 7w ago | Insider Cluster | $44.01 $43.82 | ▼ −0.43% | ▼ −0.05% | $39.24 (−10.84%) |
Sep 1, 2026 7w ago | 8-K | $42.97 $44.01 | ▲ +2.42% | ▲ +1.37% | $39.24 (−8.68%) |
Aug 31, 2026 8w ago | Insider Cluster | $43.70 $42.81 | ▼ −2.04% | ▼ −1.35% | $39.24 (−10.21%) |
Aug 26, 2026 8w ago | Insider Cluster | $44.29 $44.67 | ▲ +0.86% | ▲ +1.08% | $39.24 (−11.40%) |
Aug 26, 2026 8w ago | Insider Cluster | $44.74 $44.29 | ▼ −1.01% | ▼ −1.66% | $39.24 (−12.29%) |
Aug 24, 2026 9w ago | 8-K | $44.25 $44.74 | ▲ +1.11% | ▲ +1.09% | $39.24 (−11.32%) |
Aug 18, 2026 9w ago | Insider Cluster | $44.63 $45.26 | ▲ +1.41% | ▲ +1.20% | $39.24 (−12.08%) |
Aug 13, 2026 10w ago | Insider Cluster | $46.75 $46.69 | ▼ −0.13% | ▲ +0.07% | $39.24 (−16.06%) |
Aug 13, 2026 10w ago | Insider Cluster | $46.75 $46.69 | ▼ −0.13% | ▲ +0.07% | $39.24 (−16.06%) |
Aug 13, 2026 10w ago | Insider Cluster | $46.75 $46.69 | ▼ −0.13% | ▲ +0.07% | $39.24 (−16.06%) |
US Market Status
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