John Marshall Bancorp, Inc.

JMSBdata completeness 100%5 fiscal years on file
The thesis, from the filings

John Marshall Bancorp, Inc. earns about 25% on invested capital, far above its ~9% cost of capital, but has diluted owners by 2% over 5 years — a real edge showing up in the numbers. The estimate methods put fair value between $15.5 and $20.97 a share.Whether it’s worth owning at today’s price is the last question — and yours to answer, below.

i. The business — what you’d actually own
FigureFY 2021FY 2022FY 2023FY 2024FY 2025
Revenue$74.1M1$84.1M2$100.8M3$110.1M4$113.3M4
Net income$25.5M5$31.8M6$5.16M7$17.1M8$21.2M8
Operating cash flow$32.4M9$33.2M10$18M11$17.3M12$22.6M12
Capital expenditure$353,00013$156,00014$612,00015$483,00016$554,00016
Free cash flow (derived)$32M9$33M10$17.4M11$16.8M12$22M12
Total debt$42.7M17$24.6M18$78.7M19$80.8M20$80.9M20
Cash & equivalents$105.8M21$61.6M22$99M23$122.5M24$130M24
Diluted shares13.9M14.1M14.1M14.2M14.2M

Superscripts are receipts. Each links to the SEC filing the number came from (full list at the bottom).

ii. Your slice — ownership made literal
If you owned
shares
Net assets behind them
$187.14
your share of equity
Profit it earned you last year
$14.96
Free cash flow it threw off
$15.52
Debt you’d be carrying
$56.98

10 shares is a claim on $187.14 of net worth that earned you $14.96 and generated $15.52 of cash last year, against $56.98 of debt.

iii. Is this a good business?
Moat signal · return on invested capital
25% avg · 5y
FY21 22%FY22 24%FY23 18%FY24 28%FY25 31%

It earned about 25% on invested capital, year after year, against a ~9% cost of capital — the footprint of real pricing power. Competition usually drags returns like this back down; here it hasn't.

seeing a moat in the numbers →
Management signal · capital allocation
+2% shares · 5y

Share count is up 2% over 5 years — owners have been diluted. Worth asking what they got for it. Total debt has risen 89% over the same window.

reading capital allocation →

Signals, not verdicts — read from the filings above. Numbers don’t prove a moat; they show its footprint. You decide.

iv. What it’s worth — engine v0.1.0

The 3 estimate methods that apply put fair value between $15.5 and $20.97 a share. They rest on different assumptions, so where they diverge is the story; the Graham Number is a stricter floor, not a target.

DCF · Growth Exit 10Y
$19.65
assumptions (10)
  • riskFreeRate4.7%
  • equityRiskPremium5.0%
  • beta100.0%
  • equityWeight85.0%
  • costOfDebtSpread1.5%
  • taxRate21.0%
  • terminalGrowth2.5%
  • projectionYears10
  • fcfGrowth0.0%
  • fcfBase$17.4M
DCF · Growth Exit 5Y
$20.97
assumptions (10)
  • riskFreeRate4.7%
  • equityRiskPremium5.0%
  • beta100.0%
  • equityWeight85.0%
  • costOfDebtSpread1.5%
  • taxRate21.0%
  • terminalGrowth2.5%
  • projectionYears5
  • fcfGrowth0.0%
  • fcfBase$17.4M
Earnings Power Value
$15.5
assumptions (8)
  • riskFreeRate4.7%
  • equityRiskPremium5.0%
  • beta100.0%
  • equityWeight85.0%
  • costOfDebtSpread1.5%
  • taxRate21.0%
  • normalizedEarnings$21.2M
  • growthAssumed0.0%
Graham Number
$25.05
assumptions (1)
  • grahamMultiplier2250.0%

Different models answer different questions — which to trust when →

v. The price question — last, on purpose
Is today’s price fair?
See live price ↗
Type a price. The ledger answers.
Or set your own belief
FCF growth, next 5 years0.0%
Discount rate (WACC)8.93%
Terminal growth2.5%
At your growth, a share is worth $20.97
The three cases
Bear0.0%$20.97
Base0.0%$20.97
Bull5.0%$25.2

Bear/base/bull growth = 0% / filed history / history + 5pp. Type a price to see the return each case implies.

Default growth 0.0%= this company’s own filed history (median-to-median FCF CAGR, clamped 0–20%). Your adjustments are recorded anonymously. They become the “what do owners actually believe” dataset.

Sources — the receipts
  1. 10-K · period ending 2021-12-31 · accession 0001558370-23-004473 (InterestAndDividendIncomeOperating)
  2. 10-K · period ending 2022-12-31 · accession 0001558370-24-003634 (InterestAndDividendIncomeOperating)
  3. 10-K · period ending 2023-12-31 · accession 0001558370-25-003982 (InterestAndDividendIncomeOperating)
  4. 10-K · period ending 2024-12-31 · accession 0001104659-26-027378 (InterestAndDividendIncomeOperating)
  5. 10-K · period ending 2021-12-31 · accession 0001558370-23-004473 (NetIncomeLoss)
  6. 10-K · period ending 2022-12-31 · accession 0001558370-24-003634 (NetIncomeLoss)
  7. 10-K · period ending 2023-12-31 · accession 0001558370-25-003982 (NetIncomeLoss)
  8. 10-K · period ending 2024-12-31 · accession 0001104659-26-027378 (NetIncomeLoss)
  9. 10-K · period ending 2021-12-31 · accession 0001558370-23-004473 (NetCashProvidedByUsedInOperatingActivities)
  10. 10-K · period ending 2022-12-31 · accession 0001558370-24-003634 (NetCashProvidedByUsedInOperatingActivities)
  11. 10-K · period ending 2023-12-31 · accession 0001558370-25-003982 (NetCashProvidedByUsedInOperatingActivities)
  12. 10-K · period ending 2024-12-31 · accession 0001104659-26-027378 (NetCashProvidedByUsedInOperatingActivities)
  13. 10-K · period ending 2021-12-31 · accession 0001558370-23-004473 (PaymentsToAcquirePropertyPlantAndEquipment)
  14. 10-K · period ending 2022-12-31 · accession 0001558370-24-003634 (PaymentsToAcquirePropertyPlantAndEquipment)
  15. 10-K · period ending 2023-12-31 · accession 0001558370-25-003982 (PaymentsToAcquirePropertyPlantAndEquipment)
  16. 10-K · period ending 2024-12-31 · accession 0001104659-26-027378 (PaymentsToAcquirePropertyPlantAndEquipment)
  17. 10-K · period ending 2021-12-31 · accession 0001558370-23-004473 (LongTermDebt)
  18. 10-K · period ending 2022-12-31 · accession 0001558370-24-003634 (LongTermDebt)
  19. 10-K · period ending 2023-12-31 · accession 0001558370-25-003982 (LongTermDebt)
  20. 10-K · period ending 2024-12-31 · accession 0001104659-26-027378 (LongTermDebt)
  21. 10-K · period ending 2021-12-31 · accession 0001558370-23-004473 (CashAndCashEquivalentsAtCarryingValue)
  22. 10-K · period ending 2022-12-31 · accession 0001558370-24-003634 (CashAndCashEquivalentsAtCarryingValue)
  23. 10-K · period ending 2023-12-31 · accession 0001558370-25-003982 (CashAndCashEquivalentsAtCarryingValue)
  24. 10-K · period ending 2024-12-31 · accession 0001104659-26-027378 (CashAndCashEquivalentsAtCarryingValue)