David Phillip Stasse is CFO & VP at Trinseo S.A. (TSE). They have made 8 open-market trades across 2 companies since 2013, most recently 2026-02-27.
CIK 0001441657
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $224K since 2020, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TSE | BUY | 2023-09-14 | 2023-09-18 | $8.89 | $133K | -6.8% | -19.8% | -18.3% |
| TSE | SELL | 2021-02-25 | 2021-03-01 | $65.45 | $2.2M | +5.7% | -8.1% | -1.9% |
| TSE | BUY | 2020-03-09 | 2020-03-10 | $16.43 | $90K | +3.2% | +27.7% | +45.0% |
| TSE | SELL | 2018-05-16 | 2018-05-18 | $76.72 | $1.0M | -5.8% | -4.4% | -2.3% |
| TSE | SELL | 2017-11-10 | 2017-11-13 | $71.18 | $715K | +3.3% | +5.3% | +8.5% |
| TSE | SELL | 2017-11-10 | 2017-11-13 | $71.04 | $1.1M | +3.3% | +5.3% | +8.5% |
| TSE | SELL | 2017-03-02 | 2017-03-06 | $71.00 | $355K | +0.2% | -6.0% | -7.3% |
| FSL | SELL | 2013-04-03 | 2013-04-04 | $13.79 | $11K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.