Form4insider filings, from the source

Company · CIK 0001297107 · SIC 6022 — State Commercial Banks · NYSE

CoastalSouth Bancshares, Inc. · COSO

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $9,350 · 1sales $165k · 4net −$156k
$10k$10k$100k$100k$1M$1MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 31, 2026 SForm 4 →Aug 31, 4:48 pm EDTErnst W. BrudererDirector2,000$27.43$54,85641,131−4.64%
Aug 26, 2026 SForm 4 →Aug 26, 4:54 pm EDTErnst W. BrudererDirector2,000$27.50$55,00443,131−4.43%
Aug 18, 2026 SForm 4 →Aug 18, 4:15 pm EDTErnst W. BrudererDirector1,000$27.89$27,89045,131−2.17%
Aug 12, 2026 SForm 4 →Aug 13, 5:00 pm EDTErnst W. BrudererDirector1,000$27.56$27,56446,131−2.12%10b5-1
Aug 6, 2026 PForm 4 →Sep 14, 4:12 pm EDTJames S MacleodDirector334$27.99$9,350201,585+0.17% late

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.