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The company

Old Second Bancorp, Inc.

OSBC · Nasdaq

FinancialsRegional banksLeading

OSBC stood above a rising 150-day average in 52 of the last 52 weekly readings, every one of them. It is 8.3% above that average now. Banks — Regional & Community: 62% of its 293 stocks in an uptrend (−18 points in four weeks); Financials: 46% (−11 points in four weeks).

SEC filings

Statistics

Rotation: Leading
Weeks in an uptrend: 52 in a row
Industry in uptrend: 62% -18 in 4 wk
Insider buys, 12 months: $1,003
Insider sales, 12 months: $15.1M
Officials’ trades on record: 0
Institutions holding: 172 (-5)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 52 of 52 weeks.

17 Apr – 16 Oct

Regional banks: Most of its stocks are in an uptrend and the share has fallen sharply over four weeks. Financials: About half its stocks are in an uptrend and the share has fallen sharply over four weeks.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

No member of Congress or official has disclosed a trade in it.

Insiders

Buy orders, 12 months1

Sale orders, 12 months20

Buyers · sellers1 · 7

Who	Did	Shares	Traded
Gary S. CollinsVICE CHAIRMAN	sold	16,000at $24.69	23 Sep 2026filed 23 Sep 2026
Hugh H. McLeanDirector	sold	25,000at $25.63	8 Sep 2026filed 8 Sep 2026
Gary S. CollinsVICE CHAIRMAN	sold	5,000at $25.71	4 Sep 2026filed 11 Sep 2026
Hugh H. McLeanDirector	sold	25,000at $25.73	3 Sep 2026filed 3 Sep 2026
Darin Patrick CampbellPresident, Powersports Lending	sold	24,000at $25.53	2 Sep 2026filed 3 Sep 2026
James EccherCHAIRMAN AND CEO	sold	19,313at $25.61	12 Aug 2026filed 13 Aug 2026
James EccherCHAIRMAN AND CEO	sold	55,687at $25.46	11 Aug 2026filed 12 Aug 2026
Gary S. CollinsVICE CHAIRMAN	sold	5,120at $21.12	22 May 2026filed 26 May 2026
Gary S. CollinsVICE CHAIRMAN	sold	10,000at $21.12	21 May 2026filed 21 May 2026
Donald PilmerEVP	sold	25,000at $20.75	11 May 2026filed 11 May 2026
Billy J. Lyons, Jr.Director	bought	24at $20.90	11 May 2026filed 12 May 2026
Gary S. CollinsVICE CHAIRMAN	sold	10,000at $21.24	8 May 2026filed 11 May 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders172-5 on the quarter

New · exited20 · 24

Reported value$902.1M

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
BlackRock, Inc.added · filed 7 Aug 2026	4,298,683$100.2M	+172,439+4.2%
DIMENSIONAL FUND ADVISORS LPadded · filed 11 Aug 2026	2,498,671$58.3M	+109,809+4.6%
VANGUARD CAPITAL MANAGEMENT LLCreduced · filed 13 Aug 2026	2,179,877$50.8M	-71,972−3.2%
STATE STREET CORPadded · filed 7 Aug 2026	1,839,202$42.9M	+239,900+15.0%
Davis Asset Management, L.P.unchanged · filed 12 Aug 2026	1,800,000$42.0M	00.0%
AMERICAN CENTURY COMPANIES INCadded · filed 12 Aug 2026	1,783,820$41.6M	+192,877+12.1%
GOLDMAN SACHS GROUP INCreduced · filed 14 Aug 2026	1,624,852$37.9M	-66,671−3.9%
FJ Capital Management LLCreduced · filed 14 Aug 2026	1,460,413$34.1M	-44,689−3.0%
Boston Partnersreduced · filed 4 Aug 2026	1,415,165$32.9M	-28,724−2.0%
GEODE CAPITAL MANAGEMENT, LLCadded · filed 12 Aug 2026	1,349,432$31.5M	+67,421+5.3%