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Old Second Bancorp, Inc. (OSBC)

Old Second Bancorp, Inc. at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

Old Second Bancorp, Inc. (OSBC) is a Banks - Regional company based in US with a market capitalization of $1.1B. Revenue grew 18.1% year-over-year and the company generated $117.8M in free cash flow. This page tracks OSBC's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 877 employees · IPO Nov 16, 1993

Valuation

Valuation & price

$20.43 · as of May 17, 2026 · -13.5% vs 52w high

13.6

P/E ratio

Latest-FY diluted EPS

1.23

P/B ratio

Market cap ÷ book equity

—

Dividend yield

Price — last 12 months

$23.38$20.05$16.71Jul 25Dec 25Jul 26Jul 7, 25$18.90Jul 9, 25$18.84Jul 11, 25$18.70Jul 15, 25$18.40Jul 17, 25$18.61Jul 21, 25$18.58Jul 23, 25$18.60Jul 25, 25$17.85Jul 29, 25$17.61Jul 31, 25$16.97Aug 4, 25$16.80Aug 6, 25$16.81Aug 11, 25$16.79Aug 13, 25$17.84Aug 15, 25$17.39Aug 19, 25$17.49Aug 21, 25$17.59Aug 25, 25$18.17Aug 27, 25$18.57Aug 29, 25$18.46Sep 3, 25$18.48Sep 5, 25$18.43Sep 9, 25$18.26Sep 11, 25$18.39Sep 16, 25$17.82Sep 18, 25$18.36Sep 22, 25$17.90Sep 24, 25$17.70Sep 26, 25$17.61Sep 30, 25$17.29Oct 2, 25$17.10Oct 6, 25$17.53Oct 8, 25$17.27Oct 10, 25$17.05Oct 14, 25$17.97Oct 16, 25$16.71Oct 21, 25$18.08Oct 23, 25$17.86Oct 27, 25$18.58Oct 29, 25$18.33Oct 31, 25$17.95Nov 4, 25$18.09Nov 6, 25$18.20Nov 10, 25$18.42Nov 12, 25$18.38Nov 14, 25$18.44Nov 18, 25$17.85Nov 20, 25$17.95Nov 25, 25$19.00Nov 28, 25$18.85Dec 2, 25$18.93Dec 4, 25$19.63Dec 8, 25$19.80Dec 10, 25$20.41Dec 12, 25$20.51Dec 16, 25$20.78Dec 18, 25$20.85Dec 22, 25$20.52Dec 24, 25$20.13Dec 29, 25$19.79Jan 2, 26$19.48Jan 6, 26$19.88Jan 8, 26$20.27Jan 12, 26$19.73Jan 14, 26$20.46Jan 16, 26$20.66Jan 21, 26$21.47Jan 23, 26$19.90Jan 27, 26$19.82Jan 29, 26$19.98Feb 2, 26$20.24Feb 4, 26$20.78Feb 9, 26$21.11Feb 11, 26$20.40Feb 13, 26$20.57Feb 18, 26$20.54Feb 20, 26$20.57Feb 24, 26$19.79Feb 26, 26$20.22Mar 2, 26$19.91Mar 4, 26$20.05Mar 6, 26$19.55Mar 10, 26$19.63Mar 12, 26$19.56Mar 17, 26$19.55Mar 19, 26$19.58Mar 23, 26$19.68Mar 25, 26$19.61Mar 27, 26$19.57Mar 31, 26$20.16Apr 2, 26$20.74Apr 7, 26$20.94Apr 9, 26$21.47Apr 13, 26$21.53Apr 15, 26$21.67Apr 17, 26$21.93Apr 22, 26$21.21Apr 24, 26$20.00Apr 28, 26$20.91Apr 30, 26$20.61May 4, 26$20.50May 6, 26$21.17May 8, 26$21.28May 12, 26$20.85May 14, 26$20.71May 18, 26$20.82May 20, 26$20.97May 22, 26$21.08May 28, 26$21.30Jun 1, 26$21.07Jun 3, 26$20.70Jun 5, 26$21.56Jun 9, 26$21.94Jun 11, 26$22.22Jun 15, 26$22.01Jun 17, 26$21.66Jun 22, 26$22.08Jun 24, 26$22.89Jun 26, 26$23.38Jul 2, 26$23.23
$16.5652-week range$23.62
Loading valuation history…

Fundamentals

Key fundamentals

$1.1B

Market cap

18.1%

Revenue growth (YoY)

78.1%

Gross margin

$117.8M

Free cash flow (USD)

$142.5M

Net debt

17.5%

Share dilution

3/4

Graham criteria passed

Defensive-investor screen

Financial Services

Sector

Trajectory

Long-term trends

Revenue by year

2016 → 2025

FY 2016$100.5MFY 2017$116.5MFY 2018$137.0MFY 2019$149.4MFY 2020$139.5MFY 2021$141.9MFY 2022$255.2MFY 2023$321.0MFY 2024$336.2MFY 2025$397.0M
$100.5M$397M

Free cash flow by year

2016 → 2025

FY 2016$25.3MFY 2017$36.0MFY 2018$53.0MFY 2019$48.3MFY 2020$22.1MFY 2021$29.0MFY 2022$93.0MFY 2023$104.0MFY 2024$120.7MFY 2025$117.8M
$25.3M$117.8M

Gross margin by year

2021 → 2025

FY 202191.0%FY 202293.4%FY 202382.4%FY 202479.5%FY 202578.1%
91.0%78.1%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

1

Insider buys · 90 days

4

Insider sells · 90 days

Earnings

Last report: 10-Q filed May 7, 2026

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • 8-K eventEarnings ReleaseJul 1, 2026Filing
  • 8-K eventShare Repurchase ProgramJun 25, 2026Filing
  • 8-K eventDirector ResignationJun 9, 2026Filing
  • Insider sellInsider Sell $108KCOLLINS GARY S · Director, VICE CHAIRMAN · $108.1KMay 26, 2026Filing
  • Insider sellInsider Sell $211KCOLLINS GARY S · Director, VICE CHAIRMAN · $211.2KMay 21, 2026Filing
  • 8-K eventAnnual Meeting ResultsMay 20, 2026Filing
  • 8-K eventAnnual Stockholders MeetingMay 19, 2026Filing
  • Insider buyInsider Buy $502Lyons Billy J Jr. · Director · $501.6May 12, 2026Filing
  • Insider sellInsider Sell $319KCOLLINS GARY S · Director, VICE CHAIRMAN · $318.5KMay 11, 2026Filing
  • Insider sellInsider Sell $519KPilmer Donald · EVP · $518.8KMay 11, 2026Filing

Questions

Frequently asked questions

What is Old Second Bancorp, Inc.'s market cap?

Old Second Bancorp, Inc. (OSBC) has a market capitalization of $1.1B.

What is OSBC's P/E ratio?

OSBC trades at a price-to-earnings ratio of 13.6, based on its latest fiscal-year diluted earnings per share and the most recent cached price.

What is OSBC's price-to-book (P/B) ratio?

OSBC trades at 1.23 times book value per share.

Are insiders buying OSBC stock?

Yes — SEC Form 4 filings show 1 open-market insider buy and 4 sells at Old Second Bancorp, Inc. in the last 90 days.

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

Search the actual 10-K / 10-Q text with AI research angles

News

Latest press coverage in one feed

Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.