Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies John Ladowicz files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Darin Patrick Campbell - $2.39M in OSBC purchases and sales in the last 12 months
- James Eccher - $1.91M in OSBC purchases and sales in the last 12 months
- Gary S. Collins - $1.59M in OSBC purchases and sales in the last 12 months
- Hugh H. McLean - $643K in OSBC purchases and sales in the last 12 months
- Donald Pilmer - $519K in OSBC purchases and sales in the last 12 months
- Richard A. Gartelmann Jr. - $42K in OSBC purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is John Ladowicz?
John Ladowicz is a corporate insider of OLD SECOND BANCORP INC (OSBC). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did John Ladowicz last file a Form 4?
The most recent primary Form 4 on record is dated 16 January 2026, one of 3 filings going back to 2024.
Has John Ladowicz been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($603K) across all tracked filings.
