Stefan Demmerle is President & VP at BORGWARNER INC (BWA). They have made 20 open-market trades across 1 company since 2020, most recently 2026-08-17.
CIK 0001559086
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.
0 open-market purchases, against 20 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BWA | 202,746 | $11.8M |
Shares reported on the most recent Form 4, priced at the 2026-08-18 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BWA | SELL | 2026-08-17 | 2026-08-18 | $70.00 | $70K | -5.6% | -6.2% | — |
| BWA | SELL | 2026-05-13 | 2026-05-14 | $65.00 | $325K | +7.1% | +11.1% | +4.2% |
| BWA | SELL | 2026-05-08 | 2026-05-12 | $59.81 | $1.5M | +2.7% | +16.8% | +8.1% |
| BWA | SELL | 2026-03-10 | 2026-03-11 | $53.03 | $133K | +3.1% | +3.8% | +39.6% |
| BWA | SELL | 2025-11-11 | 2025-11-13 | $45.64 | $913K | -3.3% | -0.5% | +46.6% |
| BWA | SELL | 2025-09-05 | 2025-09-08 | $44.00 | $220K | +0.0% | -3.6% | -5.7% |
| BWA | SELL | 2025-08-12 | 2025-08-14 | $39.61 | $792K | +5.1% | +5.8% | +11.0% |
| BWA | SELL | 2025-08-04 | 2025-08-06 | $38.17 | $763K | +9.2% | +15.3% | +15.5% |
| BWA | SELL | 2024-11-27 | 2024-11-29 | $34.28 | $1.4M | +2.2% | -7.8% | -13.7% |
| BWA | SELL | 2024-11-14 | 2024-11-18 | $34.79 | $748K | +1.6% | -5.4% | -10.5% |
| BWA | SELL | 2024-03-13 | 2024-03-14 | $33.00 | $99K | +4.7% | +3.1% | +6.5% |
| BWA | SELL | 2024-03-05 | 2024-03-06 | $31.29 | $94K | +0.4% | +8.4% | +8.7% |
| BWA | SELL | 2023-06-14 | 2023-06-15 | $47.61 | $238K | -1.9% | -6.6% | -16.9% |
| BWA | SELL | 2023-03-03 | 2023-03-06 | $51.05 | $153K | -6.3% | -7.4% | -6.3% |
| BWA | SELL | 2023-02-14 | 2023-02-15 | $50.00 | $200K | +3.2% | -6.1% | -10.5% |
| BWA | SELL | 2021-11-16 | 2021-11-22 | $49.00 | $147K | -7.4% | -9.2% | -10.6% |
| BWA | SELL | 2021-11-05 | 2021-11-08 | $46.95 | $282K | +0.0% | -1.2% | -7.2% |
| BWA | SELL | 2021-06-02 | 2021-06-03 | $55.22 | $248K | -4.1% | -11.9% | -21.6% |
| BWA | SELL | 2021-03-05 | 2021-03-08 | $48.79 | $98K | -2.9% | -8.3% | +7.1% |
| BWA | SELL | 2020-12-14 | 2020-12-14 | $36.85 | $230K | +5.7% | +8.9% | +37.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.