Skip to main content

River Street Advisors LLC

Position in OSBC — Old Second Bancorp Inc

CIK 1964897 AURORA, IL

Position in OSBC

as of Mar 31, 2026 · filed Apr 21, 2026
Position Value
$15,052,665
+$7,914,281 QoQ
Shares Held
746,660
+104.0% QoQ
Ownership
1.45%
of shares outstanding
% of Portfolio
8.27%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2024
5 quarters on record
Voting authority Sole 0.ToString("F0")% Shared 0.ToString("F0")% None 100.ToString("F0")%

Common Shares in OSBC Over Time

Shares Held

Position Value (USD)

Position in Banks - Regional

Financial Services · as of Mar 31, 2026

River Street Advisors LLC holds $15,052,665 across 1 Banks - Regional name. OSBC ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 OSBC
Old Second Bancorp Inc
This page
746,660 $15,052,665

All Filings in OSBC

Export CSV
5 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $15,052,665 746,660
2025-12-31 $7,138,384 366,071
2025-09-30 $6,638,477 383,949
2025-03-31 $4,869,047 292,611
2024-12-31 $3,363,069 189,149