MarketPeel
Insider Trading Intelligence
SS

Stephen R. Stone

COSO
PRESIDENT AND CEO · COASTALSOUTH BANCSHARES, INC. · CIK 0002064783
FILING MIX · LIFETIME67%/33%
BUYS
4
SELLS
2
TOTAL VALUE
$180.6K
COMPANIES
1
ACTIVE SINCE
Jul 2025
HOLDINGS NOW
137,385
AVG SELL PX
$25.59
TRADE KIND
SHOWING 6 / 6
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 4 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Stephen R. Stone, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+50.00%-0.32%-0.39%+0.07%+0.07%
14d2+0.00%-0.44%-1.38%+0.94%+0.94%
30d2+50.00%+0.63%-0.06%+0.69%+0.69%
60d2+100.00%+4.18%+6.36%-2.17%-2.17%
90d2+100.00%+4.76%+8.05%-3.29%-3.29%
180d2(1 pending)+100.00%+10.70%+10.86%-0.17%-0.17%
1y2(1 pending)+100.00%+24.88%+20.20%+4.69%+4.69%
2y2(2 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
COSO · 137,385 shares · as of Apr 27, 2026
034,34668,693103,039137,3852026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2026
2026
FLOW · 4 buys / 2 sellsCOVERAGE · 4 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
COSO
COASTALSOUTH BANCSHARES, INC.
SALE
PRESIDENT AND CEO
17,0000Apr 27, 2026Apr 29, 2026View →
COSO
COASTALSOUTH BANCSHARES, INC.
SALE
PRESIDENT AND CEO
5,022$25.59$128.5K132,363Apr 27, 2026Apr 29, 2026View →
COSO
COASTALSOUTH BANCSHARES, INC.
PURCHASE
PRESIDENT AND CEO
17,000137,385Apr 27, 2026Apr 29, 2026View →
COSO
COASTALSOUTH BANCSHARES, INC.
PURCHASE
PRESIDENT AND CEO
200$24.15$4.8K120,385Mar 9, 2026Mar 9, 2026View →
COSO
COASTALSOUTH BANCSHARES, INC.
PURCHASEGRANT
Stock grant
12,00012,000Feb 11, 2026Feb 13, 2026View →
COSO
COASTALSOUTH BANCSHARES, INC.
PURCHASE
PRESIDENT AND CEO
2,200$21.50$47.3K120,185Jul 2, 2025Jul 7, 2025View →
Other insiders · COSO
Loading peer insiders…
About this filer
CIK 0002064783
ROLE
PRESIDENT AND CEO
PRIMARY
COSO
COMPANIES
1
ACTIVE SINCE
Jul 2025
MARKETPEEL · /INSIDER/0002064783DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback