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

FIRST US BANCSHARES, INC.

FUSB · Nasdaq · CIK 0000717806 · Financial Services · Banks—Regional

INSIDER SIGNAL

57.6 / 100

2 buyers · 11 purchase transaction lines · $118.0K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeLow
RoleStrong
RecencyModerate
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+14.0 / 35
Purchase size+8.2 / 25
Role+20.0 / 20
Recency+5.4 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 2 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ✓ Role scores high · most senior buyer: Director

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

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

AprMayJunJulAugSepOct
FIELD Robert CDirector
●●●●●●●●
Elley Thomas SSEVP,CFO,Trea,Ast Sec-FUSB
○○○○
Pierce StaciDirector
●●●
Mitchell William CSEVP-Consumer Lending-Bank
○○
Parker Matthew A.SVP, Corp Controller & PAO
○○
Mabowitz Eric HSEVP, CRO, CCO, & CRA Officer
○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION86%Largest buyer: FIELD Robert C · $101.5K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-08-03–2026-08-07

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

SIGNAL HISTORY

57.6 / 100

Latest recorded score

↓ -0.2 ptsversus the previous recorded snapshot
  1. 58.1
  2. 58.0
  3. 57.9
  4. 57.8
  5. 57.6

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

28Purchases
1Sales
72Other Form 4 lines
55SEC filings · 365 days
BUYING11 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER26 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot detected in parsed evidence

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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-0.4%
3M
-1.0%
6M
+4.8%
12M
+33.0%

Volatility & liquidity

Volatility
37.5%
Beta
—
Avg daily value
USD 275,494

Valuation

Market cap
USD 90.3M
P/E
15.1×

Fundamentals

Profit margin
525.6%
ROE
5.7%
Industry
Banks—Regional

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-07-31 · Status: PASS

Short interest

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

Shares short
7,780
Previous report
10,190
Avg daily volume
9,946
Days to cover
≤ 1.0

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
2026-09-11FIELD Robert CPurchase (P)Common Stock, $.01 par value238USD 16.45USD 3,915SEC filing ↗
2026-09-10FIELD Robert CPurchase (P)Common Stock, $.01 par value669USD 16.46USD 11,012SEC filing ↗
2026-09-09FIELD Robert CPurchase (P)Common Stock, $.01 par value877USD 16.47USD 14,444SEC filing ↗
2026-09-08FIELD Robert CPurchase (P)Common Stock, $.01 par value284USD 16.47USD 4,677SEC filing ↗
2026-09-04FIELD Robert CPurchase (P)Common Stock, $.01 par value113USD 16.45USD 1,859SEC filing ↗
2026-09-03FIELD Robert CPurchase (P)Common Stock, $.01 par value412USD 16.40USD 6,757SEC filing ↗
2026-09-02FIELD Robert CPurchase (P)Common Stock, $.01 par value288USD 16.40USD 4,723SEC filing ↗
2026-09-01FIELD Robert CPurchase (P)Common Stock, $.01 par value3,300USD 16.39USD 54,087SEC filing ↗
2026-08-07Pierce StaciPurchase (P)Common Stock, $.01 par value245USD 16.51USD 4,045SEC filing ↗
2026-08-04Pierce StaciPurchase (P)Common Stock, $.01 par value619USD 16.48USD 10,201SEC filing ↗
2026-08-03Pierce StaciPurchase (P)Common Stock, $.01 par value136USD 16.53USD 2,248SEC filing ↗
2026-02-18McPhearson John LeePurchase (P)Common Stock, $.01 par value1,500USD 8.30USD 12,450SEC filing ↗
2025-12-03Pierce StaciPurchase (P)Common Stock, $.01 par value750USD 13.74USD 10,305SEC filing ↗
2025-12-01FIELD Robert CPurchase (P)Common Stock, $.01 par value1,000USD 13.61USD 13,610SEC filing ↗
2025-11-26FIELD Robert CPurchase (P)Common Stock, $.01 par value3,000USD 13.59USD 40,770SEC filing ↗

Form 4 evidence

101 transaction lines in the latest 365-day window; 306 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-11FIELD Robert CPurchase (P)Common Stock, $.01 par value238USD 16.45USD 3,915SEC filing ↗
2026-09-10FIELD Robert CPurchase (P)Common Stock, $.01 par value669USD 16.46USD 11,012SEC filing ↗
2026-09-09FIELD Robert CPurchase (P)Common Stock, $.01 par value877USD 16.47USD 14,444SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-11FIELD Robert CPurchase (P)Common Stock, $.01 par value238USD 16.45USD 3,915SEC filing ↗
2026-09-10FIELD Robert CPurchase (P)Common Stock, $.01 par value669USD 16.46USD 11,012SEC filing ↗
2026-09-09FIELD Robert CPurchase (P)Common Stock, $.01 par value877USD 16.47USD 14,444SEC filing ↗
2026-09-08FIELD Robert CPurchase (P)Common Stock, $.01 par value284USD 16.47USD 4,677SEC filing ↗
2026-09-04FIELD Robert CPurchase (P)Common Stock, $.01 par value113USD 16.45USD 1,859SEC filing ↗
2026-09-03FIELD Robert CPurchase (P)Common Stock, $.01 par value412USD 16.40USD 6,757SEC filing ↗
2026-09-02FIELD Robert CPurchase (P)Common Stock, $.01 par value288USD 16.40USD 4,723SEC filing ↗
2026-09-01FIELD Robert CPurchase (P)Common Stock, $.01 par value3,300USD 16.39USD 54,087SEC filing ↗
2026-08-07Pierce StaciPurchase (P)Common Stock, $.01 par value245USD 16.51USD 4,045SEC filing ↗
2026-08-04Pierce StaciPurchase (P)Common Stock, $.01 par value619USD 16.48USD 10,201SEC filing ↗
2026-08-03Pierce StaciPurchase (P)Common Stock, $.01 par value136USD 16.53USD 2,248SEC filing ↗
2026-07-08Mabowitz Eric HOption exercise / conversion (M)Common Stock, $.01 par value11,600USD 12.30USD 142,736SEC filing ↗
2026-07-08Mabowitz Eric HTax withholding (F)Common Stock, $.01 par value9,353USD 16.95USD 158,533SEC filing ↗
2026-07-08Elley Thomas SOption exercise / conversion (M)Common Stock, $.01 par value6,300USD 11.71USD 73,773SEC filing ↗
2026-07-08Elley Thomas STax withholding (F)Common Stock, $.01 par value4,924USD 16.95USD 83,462SEC filing ↗
2026-07-08Dozier Beverly JOption exercise / conversion (M)Common Stock, $.01 par value8,100USD 12.06USD 97,716SEC filing ↗
2026-07-08Dozier Beverly JTax withholding (F)Common Stock, $.01 par value6,572USD 16.95USD 111,395SEC filing ↗
2026-06-29Mitchell William COption exercise / conversion (M)Common Stock, $.01 par value17,700USD 12.12USD 214,547SEC filing ↗
2026-06-29Mitchell William CTax withholding (F)Common Stock, $.01 par value14,120USD 16.98USD 239,758SEC filing ↗
2026-06-26Parker Matthew A.Option exercise / conversion (M)Common Stock, $.01 par value600USD 10.86USD 6,516SEC filing ↗
2026-06-26Parker Matthew A.Tax withholding (F)Common Stock, $.01 par value462USD 16.75USD 7,738SEC filing ↗
2026-06-26Elley Thomas SOption exercise / conversion (M)Common Stock, $.01 par value7,000USD 14.11USD 98,770SEC filing ↗
2026-06-26Elley Thomas STax withholding (F)Common Stock, $.01 par value6,220USD 16.75USD 104,185SEC filing ↗
2026-02-18McPhearson John LeeSale (S)Common Stock, $.01 par value1,500USD 8.30USD 12,450SEC filing ↗
2026-02-18McPhearson John LeePurchase (P)Common Stock, $.01 par value1,500USD 8.30USD 12,450SEC filing ↗
2026-02-10Parker Matthew A.Tax withholding (F)Common Stock, $.01 par value70USD 15.52USD 1,086SEC filing ↗
2026-02-10Mitchell William CTax withholding (F)Common Stock, $.01 par value833USD 15.52USD 12,928SEC filing ↗
2026-02-10Mabowitz Eric HTax withholding (F)Common Stock, $.01 par value729USD 15.52USD 11,314SEC filing ↗
2026-02-10Dozier Beverly JTax withholding (F)Common Stock, $.01 par value247USD 15.52USD 3,833SEC filing ↗
2026-02-09Parker Matthew A.Tax withholding (F)Common Stock, $.01 par value93USD 15.64USD 1,455SEC 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 · —
TickerFUSB
CIK0000717806
SectorFinancial Services
IndustryBanks—Regional Yahoo Finance
SEC SIC6022 State Commercial Banks
ExchangeNasdaq

Data coverage

Local Form 4 history306 transaction lines from 2020-02-26 to 2026-09-11
64 P purchase lines · 14 S sale lines · 228 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.