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US INSIDER PROFILE · NON-SCORING RESEARCH
Brouwer Roald
Officer
Identity: SEC reporting-owner CIK · Reporting-owner CIK: 0002069148
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 5
- Purchases · 24M
- 7
- Average purchase
- $126.0K
- Median purchase
- $109.8K
- Gross purchase value
- $882.2K
Companies: Amrize Ltd
7 SEC accession(s) · 0 joint-owner event(s). Values are reported Form 4 transaction values in USD.
Qualifying purchase disclosures
| Published | Company | Ticker | Role | Reported value | SEC source |
|---|---|---|---|---|---|
| 2026-08-13 | Amrize Ltd | AMRZ | Officer | $69.5K | Open filing |
| 2026-05-21 | Amrize Ltd | AMRZ | Officer | $74.8K | Open filing |
| 2026-03-16 | Amrize Ltd | AMRZ | Officer | $109.8K | Open filing |
| 2026-03-11 | Amrize Ltd | AMRZ | Officer | $176.2K | Open filing |
| 2025-11-04 | Amrize Ltd | AMRZ | Officer | $207.1K | Open filing |
| 2025-08-27 | Amrize Ltd | AMRZ | Officer | $103.8K | Open filing |
| 2025-08-12 | Amrize Ltd | AMRZ | Officer | $141.2K | Open filing |
Post-purchase outcomes
Excess return = stock return − S&P 500 ETF (SPY adjusted close) return. Returns start on the first shared trading session on or after publication.
| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 7Developing | 100.0% (7/7) | 42.9% (3/7) | -0.2% | +0.2% | -3.9% |
| 20D | 7Developing | 100.0% (7/7) | 57.1% (4/7) | +2.0% | -0.7% | -11.4% |
| 60D | 6Developing | 100.0% (6/6) | 16.7% (1/6) | -12.7% | -10.1% | -18.2% |
| 120D | 5Developing | 100.0% (5/5) | 60.0% (3/5) | +3.3% | -9.9% | -38.8% |
Research patterns
- First purchase in 12M
- 0/6
- Large purchase ≥ $100k
- 5/7
- Cluster buying · 15D
- 7/7
- Buying the dip
- 2/2
Routine / opportunistic: Not classifiable. These labels never affect the score or ranking.
Small samples remain visible but are not scored. This research enrichment never affects US-v1.1.