Old Second Bancorp Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:OSBC Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
04 Aug 25	BuyUS$415	Billy Lyons	Individual	25	US$16.61
10 Feb 25	BuyUS$418	Billy Lyons	Individual	22	US$19.02
23 Dec 24	BuyUS$100,068	Patti Rocks	Individual	5,625	US$17.79
06 Nov 24	SellUS$253,696	John Ladowicz	Individual	13,888	US$18.27
04 Nov 24	BuyUS$420	Billy Lyons	Individual	26	US$16.15

Insider Trading Volume

Insider Buying: OSBC insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of OSBC?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	2,079,254	3.95%
General Public	17,593,018	33.4%
Institutions	32,978,141	62.6%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 17.4%.

Top Shareholders

Top 25 shareholders own 48.7% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
6.65%	BlackRock, Inc.	3,501,598	US$64.0m	-2.2%	no data
5.16%	The Vanguard Group, Inc.	2,716,824	US$49.7m	0.2%	no data
4.02%	Dimensional Fund Advisors LP	2,118,468	US$38.7m	1.24%	0.01%
3.49%	FJ Capital Management, LLC	1,837,333	US$33.6m	1.47%	3.2%
2.63%	Davis Capital Partners, LLC	1,384,502	US$25.3m	25.9%	0.92%
2.48%	State Street Global Advisors, Inc.	1,305,542	US$23.9m	-0.33%	no data
2.33%	American Century Investment Management Inc	1,227,462	US$22.5m	7.7%	0.01%
2.2%	Banc Funds Company, L.L.C.	1,157,378	US$21.2m	-9.9%	3.02%
2.19%	Geode Capital Management, LLC	1,151,371	US$21.1m	2.18%	no data
2.04%	Goldman Sachs Asset Management, L.P.	1,072,354	US$19.6m	-6.1%	no data
1.89%	Kennedy Capital Management LLC	996,992	US$18.2m	93.3%	0.4%
1.77%	Manulife Asset Management	934,473	US$17.1m	-2.08%	0.01%
1.36%	Stieven Capital Advisors, L.P.	717,028	US$13.1m	0.11%	2.4%
1.36%	AllianceBernstein L.P.	713,742	US$13.1m	-3.78%	no data
1.27%	JP Morgan Asset Management	667,056	US$12.2m	-4.45%	no data
1.26%	Bridgeway Capital Management, LLC	662,653	US$12.1m	3.18%	0.18%
0.97%	AQR Capital Management, LLC	508,669	US$9.3m	-4.92%	0.01%
0.88%	Jacobs Asset Management, LLC	462,500	US$8.5m	14.7%	4.67%
0.79%	Northern Trust Global Investments	414,407	US$7.6m	-0.9%	no data
0.7%	James Eccher	368,944	US$6.7m	1.99%	no data
0.7%	Darin Campbell	367,245	US$6.7m	0%	no data
0.7%	Charles Schwab Investment Management, Inc.	366,553	US$6.7m	2.67%	no data
0.63%	Gator Capital Management, LLC	332,950	US$6.1m	-0.39%	1.73%
0.63%	BNY Asset Management	329,436	US$6.0m	-1.09%	no data
0.61%	Goldman Sachs Group, Investment Banking and Securities Investments	322,978	US$5.9m	-3.97%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/09/11 04:40
End of Day Share Price	2025/09/11 00:00
Earnings	2025/06/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Old Second Bancorp, Inc. is covered by 11 analysts. 6 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Jeffrey Rulis	D.A. Davidson & Co.
null null	D.A. Davidson & Co.
Brian Martin	Janney Montgomery Scott LLC