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

John Marshall Bancorp, Inc.

JMSB · Nasdaq · CIK 0001710482 · Financial Services · Banks—Regional

INSIDER SIGNAL

63.1 / 100

3 buyers · 6 purchase transaction lines · $109.2K gross purchase

WHY THIS SIGNAL?

Buyer breadthModerate
Purchase sizeLow
RoleStrong
RecencyLow
ConvictionStrong
Score anatomy

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

Cluster+21.0 / 35
Purchase size+7.9 / 25
Role+20.0 / 20
Recency+4.1 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 3 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
Kinney Jonathan CraigDirector
●●
BERGSTROM CHRISTOPHER WCHIEF EXECUTIVE OFFICER
○
Mahan Oscar LelandDirector
●
Chase PhilipDirector
●
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS3
PURCHASE CONCENTRATION94%Largest buyer: Kinney Jonathan Craig · $102.4K
CLUSTER BUYING · 15D2 insidersPeak activity: 2026-06-03–2026-06-03

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

SIGNAL HISTORY

63.1 / 100

Latest recorded score

↓ -0.1 ptsversus the previous recorded snapshot
  1. 63.5
  2. 63.4
  3. 63.3
  4. 63.2
  5. 63.1

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

Recent Form 4 activity

14Purchases
0Sales
14Other Form 4 lines
22SEC filings · 365 days
BUYING6 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER1 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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-1.7%
3M
+4.0%
6M
+9.8%
12M
+20.7%

Volatility & liquidity

Volatility
33.0%
Beta
—
Avg daily value
USD 1.4M

Valuation

Market cap
USD 321.8M
P/E
15.2×

Fundamentals

Profit margin
—
ROE
8.0%
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, 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: 2026-07-30 · Status: PASS

Short interest

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

Shares short
352,444
Previous report
340,199
Avg daily volume
68,220
Days to cover
5.2

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
2026-08-26Kinney Jonathan CraigPurchase (P)Common Stock2,357USD 22.92USD 54,022SEC filing ↗
2026-08-26Chase PhilipPurchase (P)Common Stock133USD 22.96USD 3,054SEC filing ↗
2026-06-03Mahan Oscar LelandPurchase (P)Common Stock179USD 21.03USD 3,764SEC filing ↗
2026-06-03Kinney Jonathan CraigPurchase (P)Common Stock2,300USD 21.03USD 48,369SEC filing ↗
2025-12-05Kinney Jonathan CraigPurchase (P)Common Stock500USD 19.63USD 9,815SEC filing ↗
2025-12-02Kinney Jonathan CraigPurchase (P)Common Stock1,345USD 19.33USD 26,003SEC filing ↗
2025-11-06Kinney Jonathan CraigPurchase (P)Common Stock500USD 18.90USD 9,450SEC filing ↗
2025-11-05Kinney Jonathan CraigPurchase (P)Common Stock800USD 18.71USD 14,965SEC filing ↗
2025-11-04Kinney Jonathan CraigPurchase (P)Common Stock400USD 18.95USD 7,580SEC filing ↗
2025-10-31Kinney Jonathan CraigPurchase (P)Common Stock500USD 18.85USD 9,425SEC filing ↗
2025-07-31Carstater KentPurchase (P)Common Stock5,000USD 18.43USD 92,156SEC filing ↗
2025-07-30GARCIA MICHAEL APurchase (P)Common Stock6,162USD 19.20USD 118,310SEC filing ↗
2025-07-29GARCIA MICHAEL APurchase (P)Common Stock4,276USD 19.20USD 82,099SEC filing ↗
2025-07-28GARCIA MICHAEL APurchase (P)Common Stock2,747USD 19.12USD 52,517SEC filing ↗
2025-07-15Mahan Oscar LelandPurchase (P)Common Stock712USD 18.63USD 13,265SEC filing ↗

Form 4 evidence

28 transaction lines in the latest 365-day window; 419 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-26Kinney Jonathan CraigPurchase (P)Common Stock2,357USD 22.92USD 54,022SEC filing ↗
2026-08-26Chase PhilipPurchase (P)Common Stock133USD 22.96USD 3,054SEC filing ↗
2026-06-17BERGSTROM CHRISTOPHER WGift (G)Common Stock32,720USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (24 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-26Kinney Jonathan CraigPurchase (P)Common Stock2,357USD 22.92USD 54,022SEC filing ↗
2026-08-26Chase PhilipPurchase (P)Common Stock133USD 22.96USD 3,054SEC filing ↗
2026-06-17BERGSTROM CHRISTOPHER WGift (G)Common Stock32,720USD 0.00USD 0SEC filing ↗
2026-06-03Mahan Oscar LelandPurchase (P)Common Stock179USD 21.03USD 3,764SEC filing ↗
2026-06-03Kinney Jonathan CraigPurchase (P)Common Stock2,300USD 21.03USD 48,369SEC filing ↗
2025-12-19Bell Kelly JoTax withholding (F)Common Stock37USD 21.36USD 790SEC filing ↗
2025-12-17Peden AndrewTax withholding (F)Common Stock194USD 21.37USD 4,146SEC filing ↗
2025-12-17Bell Kelly JoTax withholding (F)Common Stock28USD 21.37USD 598SEC filing ↗
2025-12-16Peden AndrewAward / grant (A)Common Stock2,376USD 0.00USD 0SEC filing ↗
2025-12-16Mahan Oscar LelandAward / grant (A)Common Stock1,901USD 0.00USD 0SEC filing ↗
2025-12-16Kinney Jonathan CraigAward / grant (A)Common Stock2,138USD 0.00USD 0SEC filing ↗
2025-12-16Garg SubhashAward / grant (A)Common Stock1,901USD 0.00USD 0SEC filing ↗
2025-12-16GARCIA MICHAEL AAward / grant (A)Common Stock1,901USD 0.00USD 0SEC filing ↗
2025-12-16Foster Michael TAward / grant (A)Common Stock1,901USD 0.00USD 0SEC filing ↗
2025-12-16Chase PhilipAward / grant (A)Common Stock1,901USD 0.00USD 0SEC filing ↗
2025-12-16Carstater KentAward / grant (A)Common Stock3,088USD 0.00USD 0SEC filing ↗
2025-12-16BERGSTROM CHRISTOPHER WAward / grant (A)Common Stock9,502USD 0.00USD 0SEC filing ↗
2025-12-16Allin Philip WAward / grant (A)Common Stock1,901USD 0.00USD 0SEC filing ↗
2025-12-05Kinney Jonathan CraigPurchase (P)Common Stock500USD 19.63USD 9,815SEC filing ↗
2025-12-02Kinney Jonathan CraigPurchase (P)Common Stock1,345USD 19.33USD 26,003SEC filing ↗
2025-11-06Kinney Jonathan CraigPurchase (P)Common Stock500USD 18.90USD 9,450SEC filing ↗
2025-11-05Kinney Jonathan CraigPurchase (P)Common Stock800USD 18.71USD 14,965SEC filing ↗
2025-11-04Kinney Jonathan CraigPurchase (P)Common Stock400USD 18.95USD 7,580SEC filing ↗
2025-10-31Kinney Jonathan CraigPurchase (P)Common Stock500USD 18.85USD 9,425SEC 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 · —
TickerJMSB
CIK0001710482
SectorFinancial Services
IndustryBanks—Regional Yahoo Finance
SEC SIC6022 State Commercial Banks
ExchangeNasdaq

Data coverage

Local Form 4 history419 transaction lines from 2022-05-02 to 2026-08-26
116 P purchase lines · 221 S sale lines · 82 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.