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INSIDER PROFILE · UK
Frank Mastiaux
Non-Executive Director
Profile key: uk|frank mastiaux
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 16
- Purchases · 24M
- 16
- Average purchase
- £2,422
- Gross purchase value
- £38,751
- Last purchase
- 2026-09-25
- Completed 20D events
- 7.0
- Outcome status
- PASS
Latest company: Centrica plc
Companies: Centrica plc
Post-purchase outcomes
Benchmark-relative outcomes are available against FTSE 100.
- Excess return = stock return − FTSE 100 return over the same period.
- Hit rate = positive excess-return events ÷ completed events.
- Price coverage = valid point-in-time prices ÷ events mature enough for that period.
- 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 | 8Developing | 100.0% (8/8) | 50.0% (4/8) | -1.1% | -1.1% | -5.9% |
| 20D | 7Developing | 100.0% (7/7) | 28.6% (2/7) | -3.8% | -4.0% | -13.2% |
| 60D | 5Developing | 100.0% (5/5) | 20.0% (1/5) | -17.1% | -14.1% | -23.2% |
| 120D | 3Small sample | 100.0% (3/3) | 0.0% (0/3) | -29.7% | -27.3% | -33.4% |
Research patterns
- First purchase in 12M
- 1/8
- Large purchase ≥ €100k
- 0/8
- Cluster buying · 15D
- 2/8
- Buying the dip · ≥20% below prior 52W high
- 4/8
- Routine / opportunistic
- Not classifiable
Counts are profile-wide, point-in-time research labels. They never affect the insider score or ranking.
Every completed outcome is shown; n<5 is descriptive small-sample evidence and is not scored. Disclosure-level observations published on the same date may share a return path and may not be statistically independent. These results never affect the insider score or ranking.