COSOCoastalSouth Bancshares, Inc.Financial Services · Banks - Regionalas of 2026-09-16
Horizon

Issued 2026-09-16 at $27.23 · now $27.23 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, COSO has typically landed between $25.12 and $30.48 — a range of −7.8% to +11.9% from the issuance price $27.23.

Range of outcomes in historically similar periods — not a price prediction. Ranges are scored publicly on /methodology.
  • Actual close
  • Typical path (median)
  • Middle 50% of outcomes
  • 90% range

2,200 overlapping 1 month windows · 2017-09-072026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.756.1%, ≈1,408 obs).

The cone is anchored at the 2026-09-16 issuance close ($27.23) — the price the forecast resolves against on 2026-10-15, not the latest close. The drawn path shape is illustrative (bands widen with √t); every labeled number is real — the anchor, the scored batch p90/IQR endpoints, and the typical move.

Where COSO has typically landed a month from the 2026-09-16 close of $27.23 — the range is history, not a prediction.

$25.12worst · -7.8%$30.48best · +11.9%
  • now $27.23 (+0.0%)
  • typicalThe typical outcome — half of similar past periods did better and half did worse (not an average, so a few wild periods don't skew it). $27.32 (+0.3%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $26.36$28.28
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $25.12$30.48
Actual 1-month windows behind the coneiEvery overlapping 1-month window in this security's own price history was ranked by realized return; shown are the 3 worst and 3 best of 2,200 windows spanning 2017-09-07 to 2026-09-16. Not cherry-picked — these are the extremes of the full sample. Max drop / max rise are the deepest and highest points reached within each window. See /methodology.
StartReturnMax dropMax rise
3 worst
2018-09-20−40.5%−40.5%+0.0%
2018-09-21−40.5%−40.5%+0.0%
2018-09-24−40.5%−40.5%+0.0%
3 best
2019-02-06+38.4%+0.0%+38.4%
2019-02-05+38.4%+0.0%+38.4%
2019-02-04+38.4%+0.0%+38.4%

2,200 overlapping windows · 2017-09-072026-09-16 · not cherry-picked

Seasonality · by month iHow this security has tended to do in each calendar month historically — a frequency, never a prediction.

iFor each calendar month, the share of years this security closed higher than the month before, and the average month-over-month return, over ~9 years of its own price history. Cells are shaded by average return. This is historical frequency, not a prediction — no month is a signal.
Jan
56%
+2.9%
n=9
Feb
56%
+5.8%
n=9
Mar
56%
−1.3%
n=9
Apr
33%
−2.3%
n=9
May
56%
+1.7%
n=9
Jun
33%
−1.6%
n=9
Jul
44%
+1.4%
n=9
Aug
67%
+1.9%
n=9
Sep
56%
−0.5%
n=9
Oct
22%
−5.5%
n=9
Nov
67%
+4.2%
n=9
Dec
56%
+1.6%
n=9

Up-frequency and average month-over-month return · historical frequency, not a prediction

Reported insider & political trades

Every Form 4 the people closest to this company have filed with the SEC — plotted against the share price, aggregated by month, and shown with the gap between when each trade happened and when it was disclosed. A public record, not advice.

Share price & reported tradesMonthly open-market valueReporting lag — trade date to filing date2026-092026-082026-072026-062026-052026-042026-032026-022026-012025-122025-112025-102025-092025-08$28$202026-08-31: 1 insider sale, $55K — Bruderer Ernst W.2026-08-26: 1 insider sale, $55K — Bruderer Ernst W.2026-08-18: 1 insider sale, $28K — Bruderer Ernst W.2026-08-12: 1 insider sale, $28K — Bruderer Ernst W.2026-08-07: 1 insider purchase, $7K — MACLEOD JAMES S2026-08-06: 1 insider purchase, $3K — MACLEOD JAMES S2026-05-06: 1 insider sale, $118K — Valduga Anthony P.2026-03-09: 1 insider purchase, $5K — Stone Stephen R.2026-02-10: 1 insider purchase, $38K — HIGH MICHAEL B2026-02: 1 open-market purchase, $38K2026-03: 1 open-market purchase, $5K2026-05: 1 open-market sale, $118K2026-08: 2 open-market purchases, $9K2026-08: 4 open-market sales, $165K↑ buys↓ salesdirector Bruderer Ernst W. — Sale on 2026-08-31, filed same daydirector Bruderer Ernst W. — Sale on 2026-08-26, filed same daydirector Bruderer Ernst W. — Sale on 2026-08-18, filed same daydirector Bruderer Ernst W. — Sale on 2026-08-12, filed 1 day after the tradedirector MACLEOD JAMES S — Purchase on 2026-08-07, filed 38 days after the tradedirector MACLEOD JAMES S — Purchase on 2026-08-06, filed 39 days after the tradeofficer Valduga Anthony P. — Sale on 2026-05-06, filed same daydirector Stone Stephen R. — Purchase on 2026-03-09, filed same daydirector HIGH MICHAEL B — Purchase on 2026-02-10, filed 2 days after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-08-31Bruderer Ernst W.directorSale2,000 @ $27.43$55K−4.6% of holdingnot yet — horizon still opennot yet — horizon still open41,131Form 4 · filed same day
2026-08-26Bruderer Ernst W.directorSale2,000 @ $27.50$55K−4.4% of holdingnot yet — horizon still opennot yet — horizon still open43,131Form 4 · filed same day
2026-08-18Bruderer Ernst W.directorSale1,000 @ $27.89$28K−2.2% of holdingnot yet — horizon still opennot yet — horizon still open45,131Form 4 · filed same day
2026-08-12Bruderer Ernst W.directorSale1,000 @ $27.56$28K−2.1% of holding+0.1%not yet — horizon still open46,131Form 4 · filed 1 day after the trade
2026-08-07MACLEOD JAMES SdirectorPurchase238 @ $28.15$7K+0.1% of holding−0.0%not yet — horizon still open201,585Form 4 · filed 38 days after the trade
2026-08-06MACLEOD JAMES SdirectorPurchase96 @ $27.61$3K+0.0% of holding+0.6%not yet — horizon still open201,347Form 4 · filed 39 days after the trade
2026-05-06Valduga Anthony P.officerSale4,558 @ $25.84$118K−5.0% of holding+0.3%not yet — horizon still open86,115Form 4 · filed same day
2026-03-09Stone Stephen R.directorPurchase200 @ $24.15$5K+0.2% of holding+6.0%+2.3%120,385Form 4 · filed same day
2026-02-10HIGH MICHAEL BdirectorPurchase1,500 @ $25.14$38Kownership Δ n/a−1.7%−2.3%1,500Form 4 · filed 2 days after the trade
2025-07-02Topper Joseph V. Jr.directorPurchase100,000 @ $21.50$2.1M+1265.8% of holding−4.9%−2.4%107,900Form 4 · filed 5 days after the trade
2025-07-02Richardson James N. Jr.directorPurchase20,000 @ $21.50$430K+18.4% of holding−4.9%−2.4%128,891Form 4 · filed 5 days after the trade
2025-07-02Gutin BorisdirectorPurchase11,000 @ $21.50$237K+151.0% of holding−4.9%−2.4%18,284Form 4 · filed 5 days after the trade
2025-07-02MACLEOD JAMES SdirectorPurchase10,000 @ $21.50$215Kownership Δ n/a−4.9%−2.4%10,000Form 4 · filed 5 days after the trade
2025-07-02ALDRIDGE JOHN G JRdirectorPurchase5,000 @ $21.50$108K+38.1% of holding−4.9%−2.4%18,129Form 4 · filed 5 days after the trade
2025-07-02FRAWLEY PATRICK MdirectorPurchase4,650 @ $21.50$100K+5.9% of holding−4.9%−2.4%83,549Form 4 · filed 5 days after the trade
2025-07-02Hemby Lauren M.officerPurchase4,500 @ $21.50$97K+78.3% of holding−4.9%−2.4%10,250Form 4 · filed 5 days after the trade
2025-07-02Askins L. ScottdirectorPurchase2,325 @ $21.50$50K+19.9% of holding−4.9%−2.4%13,990Form 4 · filed 5 days after the trade
2025-07-02Stone Stephen R.directorPurchase2,200 @ $21.50$47K+1.9% of holding−4.9%−2.4%120,185Form 4 · filed 5 days after the trade
2025-07-02Bruderer Ernst W.directorPurchase2,000 @ $21.50$43K+4.4% of holding−4.9%−2.4%47,131Form 4 · filed 5 days after the trade
2025-07-02Valduga Anthony P.officerPurchase1,500 @ $21.50$32K+1.9% of holding−4.9%−2.4%81,514Form 4 · filed 5 days after the trade
2025-07-02Turner Cameron BradleyofficerPurchase1,000 @ $21.50$22K+20.0% of holding−4.9%−2.4%6,000Form 4 · filed 5 days after the trade

The vs-S&P columns are a labeled look-back on what the stock did after each filing, measured against the index over the same window. Descriptive history, not a claim about the person or a reason to trade.

43 award / exercise / gift records — not counted as purchases

Awards, option exercises, gifts and tax-withholding disposals are shown separately and never counted as open-market purchases or sales — they carry no conviction information.

DatePersonRoleActionSharesOwned afterFiling
2026-05-06Valduga Anthony P.officerGift2,00084,115Form 4
2026-04-27Stone Stephen R.directorWithheld for tax5,022132,363Form 4
2026-04-27Valduga Anthony P.officerWithheld for tax3,84190,673Form 4
2026-04-27Hemby Lauren M.officerWithheld for tax1,18113,069Form 4
2026-04-27Turner Cameron BradleyofficerWithheld for tax1,1698,831Form 4
2026-04-27Stone Stephen R.directorOption exercise17,000137,385Form 4
2026-04-27Valduga Anthony P.officerOption exercise13,00094,514Form 4
2026-04-27Hemby Lauren M.officerOption exercise4,00014,250Form 4
2026-04-27Turner Cameron BradleyofficerOption exercise4,00010,000Form 4
2026-04-27Turner Cameron BradleyofficerOption exercise4,0000Form 4
2026-04-27Hemby Lauren M.officerOption exercise4,0000Form 4
2026-04-27Stone Stephen R.directorOption exercise17,0000Form 4
2026-04-27Stone Stephen R.directorOption exercise17,0000Form 4
2026-04-27Hemby Lauren M.officerOption exercise4,0000Form 4
2026-04-27Valduga Anthony P.officerOption exercise13,0000Form 4
2026-04-27Valduga Anthony P.officerOption exercise13,0000Form 4
2026-04-27Turner Cameron BradleyofficerOption exercise4,0000Form 4
2026-02-11Valduga Anthony P.officerAward / grant10,00010,000Form 4
2026-02-11Turner Cameron BradleyofficerAward / grant1,5001,500Form 4
2026-02-11ALDRIDGE JOHN G JRdirectorAward / grant927927Form 4
2026-02-11Askins L. ScottdirectorAward / grant927927Form 4
2026-02-11Bruderer Ernst W.directorAward / grant868868Form 4
2026-02-11ALDRIDGE JOHN G JRdirectorAward / grant927927Form 4
2026-02-11Askins L. ScottdirectorAward / grant927927Form 4
2026-02-11Bruderer Ernst W.directorAward / grant868868Form 4
2026-02-11Stone Stephen R.directorAward / grant12,00012,000Form 4
2026-02-11Richardson James N. Jr.directorAward / grant868868Form 4
2026-02-11Topper Joseph V. Jr.directorAward / grant927927Form 4
2026-02-11Hemby Lauren M.officerAward / grant4,0004,000Form 4
2026-02-11MACLEOD JAMES SdirectorAward / grant1,1891,189Form 4
2026-02-11Valduga Anthony P.officerAward / grant10,00010,000Form 4
2026-02-11HIGH MICHAEL BdirectorAward / grant868868Form 4
2026-02-11GRIFFITH MARKdirectorAward / grant987987Form 4
2026-02-11Turner Cameron BradleyofficerAward / grant1,5001,500Form 4
2026-02-11FRAWLEY PATRICK MdirectorAward / grant868868Form 4
2026-02-11FRAWLEY PATRICK MdirectorAward / grant868868Form 4
2026-02-11GRIFFITH MARKdirectorAward / grant987987Form 4
2026-02-11HIGH MICHAEL BdirectorAward / grant868868Form 4
2026-02-11Hemby Lauren M.officerAward / grant4,0004,000Form 4
2026-02-11MACLEOD JAMES SdirectorAward / grant1,1891,189Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Across 2012–2021, stocks where a CEO, C-suite officer, or director had recently made an open-market common-stock purchase ran about +28 bp per month above the universe average (n=34,268 stock-weeks). A historical tendency, not a prediction.

Congressional disclosures

No congressional trades disclosed for this company.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.