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S-1/A ·Filed Oct 23, 2026

MFDB

MFB Bancorp, Inc.
NEUTRAL
Impact 4/10
Horizonweeks Processed4d 10h ago SEC0001104659-26-118481
IPO registration amendment
Actionable Insight • Neutral

Monitor subscription levels through the December 22, 2026 deadline to gauge demand. The offering requires a minimum of 765,000 shares to close. Post-offering, watch for deployment of capital into higher-yielding loans and any improvement in the company's low return on equity.

DirectionNeutral
Confidencemedium
Horizonweeks

Executive Summary

MFB Bancorp, Inc. is conducting a mutual-to-stock conversion and best-efforts stock offering of up to 1,190,250 shares at $10.00/share, with a minimum of 765,000 shares. The company is a small community bank in Chicago with $96.2M in assets, $82.0M in net loans, and $16.3M in equity as of September 30, 2026. The offering is a second-step conversion from a mutual holding company structure, with proceeds intended to strengthen capital and support growth.

Key Financial Metrics

Price Range
$10.00 per share
Rev Growth
-1.5%

Key Facts

  • Offering 765,000 to 1,190,250 shares at $10.00 per share on a best-efforts basis
  • Estimated net proceeds of $5.9M to $10.1M depending on shares sold
  • At least 50% of net proceeds will be contributed to Mutual Federal Bank
  • Pro forma tangible book value per share ranges from $22.18 (minimum) to $16.72 (adjusted maximum)
  • Pro forma net income for six months ended June 30, 2026 ranges from $14,000 to $48,000
  • Existing public stockholders will exchange shares at a ratio of 0.2816 to 0.4381 new shares per existing share
  • Company had net loss of $18,000 for six months ended June 30, 2026 and net income of $42,000 for nine months ended September 30, 2026
  • Material weakness in internal control over financial reporting related to IT general controls identified
  • Appraised pro forma market value of $11.5 million at midpoint, based on independent appraisal by RP Financial

Financial Impact

Offering raises $7.65M to $11.9M in gross proceeds; net proceeds $5.9M to $10.1M. Pro forma equity increases from $16.3M to $21.6M-$25.3M.

equitybook value per shareregulatory capital ratiosearnings per share

Risk Factors

  • Low profitability: net loss of $18,000 for H1 2026 and minimal net income of $42,000 for 9M 2026
  • Material weakness in internal controls over IT access and financial reporting
  • Concentrated loan portfolio: 78.1% in one-to-four-family residential real estate, 100% secured by real estate in Chicago MSA
  • Limited trading market expected on OTCQB, with low liquidity risk
  • Pro forma price-to-core earnings multiple of 54.49x at midpoint represents a 176.8% premium to peer group average of 19.68x

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
S-1/A Filing (Primary)0001104659-26-118481
Document: tm2624212d20_ex99-5.htm0001104659-26-118481
Document: tm2624212d20_ex1-3.htm0001104659-26-118481

US Market Status

Market Closed — Opens in 6h 36m

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Report published Oct 23, 2026