Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

CoastalSouth Bancshares, Inc.

COSO · NYSE · CIK 0001297107 · Financial Services · Banks—Regional

INSIDER SIGNAL

No active buy signal

2 qualifying P purchase groups
in the current 180-day scoring window

16 Form 4 transaction lines observed in the same window
5 sales · 9 option, withholding, award, gift or other lines

Last qualifying purchase2026-08-07 · MACLEOD JAMES S · $6.7K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying2 qualifying line group(s)
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Valduga Anthony P.CFO AND COO
○○○▼
Bruderer Ernst W.Director
▼▼▼▼
Stone Stephen R.PRESIDENT AND CEO
○○
Hemby Lauren M.CHIEF ACCOUNTING OFFICER
○○
Turner Cameron BradleyCHIEF CREDIT OFFICER
○○
MACLEOD JAMES SDirector
●●
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: MACLEOD JAMES S · $9.4K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-08-06–2026-08-07

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-08-07 · MACLEOD JAMES S.

Recent Form 4 activity

4Purchases
5Sales
9Other Form 4 lines
12SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING5 sale line(s) · context only
OTHER9 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
159,659
Previous report
229,473
Avg daily volume
143,068
Days to cover
1.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-07MACLEOD JAMES SPurchase (P)Common Stock238USD 28.15USD 6,700SEC filing ↗
2026-08-06MACLEOD JAMES SPurchase (P)Common Stock96USD 27.61USD 2,651SEC filing ↗
2026-03-09Stone Stephen R.Purchase (P)Common Stock200USD 24.15USD 4,830SEC filing ↗
2026-02-10HIGH MICHAEL BPurchase (P)Common Stock1,500USD 25.14USD 37,710SEC filing ↗
2025-07-02Valduga Anthony P.Purchase (P)Common Stock1,500USD 21.50USD 32,250SEC filing ↗
2025-07-02Turner Cameron BradleyPurchase (P)Common Stock1,000USD 21.50USD 21,500SEC filing ↗
2025-07-02Topper Joseph V. Jr.Purchase (P)Common Stock100,000USD 21.50USD 2,150,000SEC filing ↗
2025-07-02Stone Stephen R.Purchase (P)Common Stock2,200USD 21.50USD 47,300SEC filing ↗
2025-07-02Richardson James N. Jr.Purchase (P)Common Stock20,000USD 21.50USD 430,000SEC filing ↗
2025-07-02MACLEOD JAMES SPurchase (P)Common Stock10,000USD 21.50USD 215,000SEC filing ↗
2025-07-02Hemby Lauren M.Purchase (P)Common Stock4,500USD 21.50USD 96,750SEC filing ↗
2025-07-02Gutin BorisPurchase (P)Common Stock11,000USD 21.50USD 236,500SEC filing ↗
2025-07-02FRAWLEY PATRICK MPurchase (P)Common Stock4,650USD 21.50USD 99,975SEC filing ↗
2025-07-02Bruderer Ernst W.Purchase (P)Common Stock2,000USD 21.50USD 43,000SEC filing ↗
2025-07-02Askins L. ScottPurchase (P)Common Stock2,325USD 21.50USD 49,988SEC filing ↗

Form 4 evidence

18 transaction lines in the latest 365-day window; 30 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31Bruderer Ernst W.Sale (S)Common Stock2,000USD 27.43USD 54,860SEC filing ↗
2026-08-26Bruderer Ernst W.Sale (S)Common Stock2,000USD 27.50USD 55,000SEC filing ↗
2026-08-18Bruderer Ernst W.Sale (S)Common Stock1,000USD 27.89USD 27,890SEC filing ↗
Show recent Form 4 evidence (18 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31Bruderer Ernst W.Sale (S)Common Stock2,000USD 27.43USD 54,860SEC filing ↗
2026-08-26Bruderer Ernst W.Sale (S)Common Stock2,000USD 27.50USD 55,000SEC filing ↗
2026-08-18Bruderer Ernst W.Sale (S)Common Stock1,000USD 27.89USD 27,890SEC filing ↗
2026-08-12Bruderer Ernst W.Sale (S)Common Stock1,000USD 27.56USD 27,560SEC filing ↗
2026-08-07MACLEOD JAMES SPurchase (P)Common Stock238USD 28.15USD 6,700SEC filing ↗
2026-08-06MACLEOD JAMES SPurchase (P)Common Stock96USD 27.61USD 2,651SEC filing ↗
2026-05-06Valduga Anthony P.Sale (S)Common Stock4,558USD 25.84USD 117,779SEC filing ↗
2026-05-06Valduga Anthony P.Gift (G)Common Stock2,000USD 0.00USD 0SEC filing ↗
2026-04-27Valduga Anthony P.Option exercise / conversion (M)Common Stock13,000USD 0.00USD 0SEC filing ↗
2026-04-27Valduga Anthony P.Tax withholding (F)Common Stock3,841USD 25.59USD 98,291SEC filing ↗
2026-04-27Turner Cameron BradleyOption exercise / conversion (M)Common Stock4,000USD 0.00USD 0SEC filing ↗
2026-04-27Turner Cameron BradleyTax withholding (F)Common Stock1,169USD 25.59USD 29,915SEC filing ↗
2026-04-27Stone Stephen R.Option exercise / conversion (M)Common Stock17,000USD 0.00USD 0SEC filing ↗
2026-04-27Stone Stephen R.Tax withholding (F)Common Stock5,022USD 25.59USD 128,513SEC filing ↗
2026-04-27Hemby Lauren M.Option exercise / conversion (M)Common Stock4,000USD 0.00USD 0SEC filing ↗
2026-04-27Hemby Lauren M.Tax withholding (F)Common Stock1,181USD 25.59USD 30,222SEC filing ↗
2026-03-09Stone Stephen R.Purchase (P)Common Stock200USD 24.15USD 4,830SEC filing ↗
2026-02-10HIGH MICHAEL BPurchase (P)Common Stock1,500USD 25.14USD 37,710SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerCOSO
CIK0001297107
SectorFinancial Services
IndustryBanks—Regional Yahoo Finance
SEC SIC6022 State Commercial Banks
ExchangeNYSE

Data coverage

Local Form 4 history30 transaction lines from 2025-07-02 to 2026-08-31
16 P purchase lines · 5 S sale lines · 9 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.