Are insiders buying OSBC stock?

Yes — 2 distinct insiders have bought OSBC (OLD SECOND BANCORP INC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 5, 2025.

How much OSBC stock have insiders bought?

Insiders have bought a combined $102.0K of OSBC across 6 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in OSBC?

A cluster buy is two or more distinct OLD SECOND BANCORP INC insiders — officers, directors, or 10% owners — each buying OSBC on the open market within a rolling window. OSBC has 1 detected cluster buy to date.

Where does this OSBC insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

OSBC insider buying

1 cluster buy

OLD SECOND BANCORP INC · Financials

When two or more insiders at OLD SECOND BANCORP INC buy OSBC on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in OSBC plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$102.0K

Market cap

$1.2B

Detected clusters

Nov 4, 2024 – Feb 10, 2025
Detected Feb 10, 2025
2 insiders
Total bought
$100.9K
Market cap
$1.2B

All notable open-market buys in OSBC

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Aug 4, 2025	Lyons Billy J Jr. Director	25	$16.61	$415.3	SEC ↗
Feb 10, 2025	Lyons Billy J Jr.cluster Director	22	$19.02	$418.4	SEC ↗
Dec 23, 2024	Temple Rocks Patticluster Director	5,625	$17.79	$100.1K	SEC ↗
Nov 4, 2024	Lyons Billy J Jr.cluster Director	26	$16.15	$419.9	SEC ↗
Aug 5, 2024	Lyons Billy J Jr. Director	23	$14.86	$341.8	SEC ↗
May 6, 2024	Lyons Billy J Jr. Director	24	$14.44	$346.6	SEC ↗

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OSBC insider buying — FAQ

Are insiders buying OSBC stock?: Yes — 2 distinct insiders have bought OSBC (OLD SECOND BANCORP INC) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 5, 2025.
How much OSBC stock have insiders bought?: Insiders have bought a combined $102.0K of OSBC across 6 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in OSBC?: A cluster buy is two or more distinct OLD SECOND BANCORP INC insiders — officers, directors, or 10% owners — each buying OSBC on the open market within a rolling window. OSBC has 1 detected cluster buy to date.
Where does this OSBC insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in OSBC

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy OSBC within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding OSBC.