OSBC at a glance
OLD SECOND BANCORP INC (OSBC, SEC CIK 357173) filed its latest 10-K annual report on February 26, 2026, a 10-Q quarterly report on August 6, 2026, an 8-K current report on October 1, 2026 and Form 4 insider filings as recently as October 1, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.
- For the fiscal year ended December 31, 2025 (FY2025), OLD SECOND BANCORP INC (OSBC) reported revenue of $355.2 million (up 19.2% from FY2024) and net income of $80.3 million. Diluted EPS was $1.62.
- As of June 30, 2026, 28 institutional investment managers tracked by SignalX reported holding OLD SECOND BANCORP INC (OSBC) shares worth $398.5 million in 13F-HR filings.
- The most recent insider open-market sale reported on Form 4 was by COLLINS GARY S on September 23, 2026 of 16,000 shares at $24.69 per share.
- In the last 90 days, OSBC insiders reported 0 open-market purchases ($0) and 7 open-market sales ($4.3M) on Form 4, a net sale of $4.3M.
Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).
- Revenue · FY2025
- $355.2M
- +19.2% vs prior year
- Insiders · 90 days
- 0 buys · 7 sells
- Net −$4.3M
- 13F holders
- 28 funds
- $398.5M · +0 vs prior quarter
- Latest 8-K
- Jul 22, 2026
- Item 2.02
AI 10-K Annual Report Analysis
Latest 10-K, fiscal year ended Dec 31, 2025
Business Overview
- Core business model: Regional bank focused on loan origination, securities investments, and managing cash flows through interest margins
- New emphasis on post-acquisition integration: Bancorp Financial acquisition generated $10.5M net cash inflow in 2025, following $237.4M inflow from FRME branch purchase in 2024
- Strategic liquidity management shift: Increased use of FHLBC advances with $179.5M short-term borrowings in 2025 vs reduction of $385M in 2024, reflecting dynamic liquidity needs
- Notable metric: Deposit outflows increased substantially to $404.3M in 2025 from $69.8M in 2024, impacting financing cash flows
- Unusual fact: Large off-balance sheet credit commitments totaling $803.2M across varying maturities as of December 31, 2025
Risk Factors
- Regulatory risk: OCC may impose restrictions on commercial real estate loans above 300% of capital, with loans at 220.3% of Tier 1 capital plus ACL as of Dec 31, 2025
- Macroeconomic risk: Illinois state fiscal challenges may trigger tax hikes, reduce business vitality, or cause firms to leave, impacting bank's Chicago suburbs concentration
- Operational risk: Nonperforming loans rose 74.4% to $52.8 million as of Dec 31, 2025, increasing management burden and credit loss risk
- Competitive risk: Wealth management fees vulnerable to financial market declines and client asset withdrawals, exposing Old Second to market volatility
- Financial risk: Loan portfolio concentrated 56.5% in real estate ($2.97 billion), exposing bank to collateral value declines and regulatory scrutiny
Management Discussion & Analysis
- Revenue $339.3M including adjustments, up $45.3M or 15.8% from $294.0M in 2024 driven by net interest and noninterest income growth
- Operating efficiency ratio 57.91% GAAP vs 54.36% in 2024, adjusted efficiency ratio stable at 53.15% vs 53.22% indicating margin pressure from higher expenses
- Best segment: Wealth management up 15.9% to $13.2M; Worst: residential mortgage banking revenue down 21.2% to $2.6M due to mark-to-market losses growing to $1.9M
- Loans grew $1.27B or 31.9% to $5.25B mainly from Bancorp Financial acquisition; Deposits up 17.3% to $5.60B; Stockholders’ equity increased to $896.8M from $671.0M
- Increased noninterest expense +27.7% to $204.0M driven by acquisition costs; Income tax expense $27.4M with effective rate 25.5%; Management notes credit quality challenges with nonperforming loans rising 74.4% to $52.8M
AI summary of the OSBC 10-K filed . Generated from the filing text; verify against the original.View on SEC EDGARHow to read a 10-K
AI 10-Q Quarterly Report Analysis
Latest 10-Q, quarter ended Jun 30, 2026
Management Discussion & Analysis
- Net income $28.2M, up from $21.8M YoY; diluted EPS $0.54 vs $0.48
- Net interest income $83.3M vs $64.2M; noninterest income $13.3M vs $10.9M
- GAAP net interest margin 5.21% vs 4.83% YoY; effective tax rate 25.5% vs 25.3%
- Bancorp Financial portfolio strongest driver; loans increased $1.25B YoY
- Credit losses $7.5M vs $2.5M; nonperforming loans 1.1% vs 0.8% YoY
- Liquidity metrics solid; $30.0M subordinated-debt partial redemption and elevated FHLB borrowings anticipated
Risk Factors
- No material changes to risk factors disclosed in the December 31, 2025 Form 10-K
- Capital-allocation risk: $15.4 million reduction to capital from second-quarter repurchases
- Regulatory risk: Federal Reserve non-objection required for repurchases after June 30, 2027
- Liquidity and capital risk: 2026-2027 repurchase authorization permits up to $61.2 million through June 30, 2027
AI summary of the OSBC 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K
AI 8-K Current Report Analysis
The most recent material events, by 8-K item
Item 2.02: Results of Operations and Financial Condition
- Second-quarter results for period ended June 30, 2026 released July 22, 2026
- Financial results and loan portfolio disclosures provided in Exhibits 99.1 and 99.2
Item EX-99.1: Item EX-99.1
- Q2 2026 net income $28.2M, or $0.54 diluted EPS, up from $25.6M and $0.48 in Q1
- Net interest income $83.3M, up 2.69%, with tax-equivalent NIM expanding nine basis points to 5.23%
Item 5.02: Departure/Appointment of Directors or Principal Officers
- John Williams, Jr. resigned July 7, 2026 after reaching the Company’s mandatory director age of 73
- Departure unrelated to disagreement, limiting immediate governance concern
Item 8.01: Other Events
- New $61.2 million share repurchase authorization for July 1, 2026–June 30, 2027
- Federal Reserve Bank of Chicago nonobjection supports regulatory clearance for buybacks
AI summaries of OSBC 8-K current reports filed with the SEC. What 8-K item codes mean
SignalX for OSBC
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Recent Insider Transactions (Form 4)
Latest reported trades by officers, directors and 10% owners
| Insider | Type | Date | Shares | Price |
|---|---|---|---|---|
| Gartelmann Richard A JR | J | Sep 30, 2026 | 35 | - |
| Pilmer Donald | J | Sep 30, 2026 | 11 | - |
| Eccher James | J | Sep 30, 2026 | 92 | - |
| ADAMS BRADLEY S. | J | Sep 30, 2026 | 28 | - |
| COLLINS GARY S | J | Sep 30, 2026 | 30 | - |
| Eccher James | J | Sep 30, 2026 | 17 | - |
| COLLINS GARY S | Sell | Sep 23, 2026 | 16,000 | $24.69 |
| MCLEAN HUGH H | Sell | Sep 8, 2026 | 25,000 | $25.63 |
Financial SummaryXBRL
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Profitability | |||
| Revenue | $292.0M | $297.9M | $355.2M |
| Net Income | $91.7M | $85.3M | $80.3M |
| Net Margin | 31.4% | 28.6% | 22.6% |
| Balance Sheet | |||
| Total Assets | $5.7B | $5.6B | $6.9B |
| Equity | $577.3M | $671.0M | $896.8M |
| ROE | 15.9% | 12.7% | 9.0% |
| Per Share | |||
| EPS | - | $1.87 | $1.62 |
| Cash Flow | |||
| Operating CF | $116.4M | $131.5M | $122.3M |
| CapEx | $12.4M | $10.8M | $4.5M |
Source: XBRL data in OLD SECOND BANCORP INC (OSBC)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →
13F Fund Holdings: Quarterly Trend
Latest: Q2 2026Aggregate OSBC share value held by 13F filers tracked by SignalX, by quarter.
Quarterly totals table
| Quarter | Funds | Total value |
|---|---|---|
| Q2 2026 | 28 | $398.5M |
| Q1 2026 | 28 | $327.1M |
| Q4 2025 | 25 | $322.5M |
| Q3 2025 | 28 | $294.3M |
| Q2 2025 | 29 | $256.9M |
| Q1 2025 | 26 | $190.4M |
| Q4 2024 | 20 | $149.6M |
| Q3 2024 | 18 | $78.9M |
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Source: 13F-HR filings on SEC EDGAR (aggregated from 202 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work
OSBC filing archive
AI analysis pages for each 10-K, 10-Q and 8-K
10-K annual reports
10-Q quarterly reports
Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4
| Form | Filing date | Period | Analysis | SEC |
|---|---|---|---|---|
| 8-K | Oct 1, 2026 | - | - | - |
| 4 | Oct 1, 2026 | - | - | - |
| 4 | Oct 1, 2026 | - | - | - |
| 4 | Oct 1, 2026 | - | - | - |
| 4 | Oct 1, 2026 | - | - | - |
| 4 | Oct 1, 2026 | - | - | - |
| 4 | Sep 23, 2026 | - | - | - |
| 4 | Sep 11, 2026 | - | - | - |
| 4 | Sep 8, 2026 | - | - | - |
| 4 | Sep 3, 2026 | - | - | - |
| 4 | Sep 3, 2026 | - | - | - |
| 4 | Aug 13, 2026 | - | - | - |
| 4 | Aug 12, 2026 | - | - | - |
| 4 | Aug 11, 2026 | - | - | - |
| 10-Q | Aug 6, 2026 | Jun 30, 2026 | Analysis | |
| 8-K | Jul 22, 2026 | - | Analysis | - |
| 8-K | Jul 21, 2026 | - | - | - |
| 8-K | Jul 8, 2026 | - | Analysis | - |
| 4 | Jul 2, 2026 | - | - | - |
| 4 | Jul 2, 2026 | - | - | - |
| 4 | Jul 2, 2026 | - | - | - |
| 4 | Jul 2, 2026 | - | - | - |
| 4 | Jul 2, 2026 | - | - | - |
| 8-K | Jul 1, 2026 | - | - | - |
| 8-K | Jun 25, 2026 | - | Analysis | - |
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OSBC SEC filings: frequently asked questions
Are OSBC insiders buying or selling?
In the last 90 days, OLD SECOND BANCORP INC (OSBC) officers, directors and 10% owners reported no open-market purchases and 7 open-market sales worth $4.3 million by 4 insiders on Form 4. Many insider sales are pre-planned or for taxes, so purchases usually carry more information.
Which institutions hold OSBC stock?
As of June 30, 2026, the largest OLD SECOND BANCORP INC (OSBC) holders among the 13F filers tracked by SignalX were BlackRock ($100.2 million), Dimensional Fund Advisors ($58.3 million), Vanguard Capital Management LLC ($50.8 million), State Street Corp ($42.9 million), Goldman Sachs Group ($37.9 million). 13F-HR reports are filed up to 45 days after each quarter ends.
What was OSBC's revenue in fiscal year 2025?
For the fiscal year ended December 31, 2025 (FY2025), OLD SECOND BANCORP INC (OSBC) reported revenue of $355.2 million (up 19.2% from FY2024) and net income of $80.3 million. Diluted EPS was $1.62. The figures come from the XBRL data in the 10-K.
What are the main risks in OSBC's latest 10-K?
In the 10-K filed February 26, 2026, OLD SECOND BANCORP INC (OSBC) flagged: Regulatory risk: OCC may impose restrictions on commercial real estate loans above 300% of capital, with loans at 220.3% of Tier 1 capital plus ACL as of Dec 31, 2025. Macroeconomic risk: Illinois state fiscal challenges may trigger tax hikes, reduce business vitality, or cause firms to leave, impacting bank's Chicago suburbs concentration. (AI summary of the Risk Factors section.)
What did OSBC report in its latest 8-K?
OLD SECOND BANCORP INC (OSBC) filed an 8-K on July 22, 2026 reporting Item 2.02 (Results of Operations and Financial Condition). Second-quarter results for period ended June 30, 2026 released July 22, 2026.
What are the latest OSBC SEC filings?
OLD SECOND BANCORP INC (OSBC) filed its latest 10-K annual report on February 26, 2026, a 10-Q quarterly report on August 6, 2026, an 8-K current report on October 1, 2026 and a Form 4 insider filing on October 1, 2026.
What is OSBC's SEC CIK number?
OLD SECOND BANCORP INC (OSBC)'s SEC Central Index Key (CIK) is 357173. EDGAR lists every OSBC filing under that number.
Ask anything about OSBC
The research agent reads OSBC's filings, financials, insider trades and 13F holders, then answers with sources.