Ernst W. Bruderer is Director at CoastalSouth Bancshares, Inc. (COSO). They have made 5 open-market trades across 1 company since 2025, most recently 2026-08-31.
CIK 0002067397
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.
1 open-market purchase totalling $43K since 2025, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| COSO | 41,131 | $1.1M |
Shares reported on the most recent Form 4, priced at the 2026-08-31 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 |
|---|---|---|---|---|---|---|---|---|
| COSO | SELL | 2026-08-31 | 2026-08-31 | $27.43 | $55K | +0.3% | -4.4% | — |
| COSO | SELL | 2026-08-26 | 2026-08-26 | $27.50 | $55K | +1.9% | -2.2% | — |
| COSO | SELL | 2026-08-18 | 2026-08-18 | $27.89 | $28K | +0.3% | -0.6% | — |
| COSO | SELL | 2026-08-12 | 2026-08-13 | $27.56 | $28K | -1.3% | -1.6% | — |
| COSO | BUY | 2025-07-02 | 2025-07-07 | $21.50 | $43K | -1.4% | -6.7% | +4.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.