Old Second Bancorp, Inc.
DE ˙ DB ˙ US6802771005
18,20 € ↑0,60 (3,41%)
2026-06-05
DEL PRIS
SecurityDE:OSB / Old Second Bancorp, Inc.
InstitutionCentennial Wealth Advisory LLC
Latest Disclosed Ownership17,507 shares
Latest Disclosed Value $ 352,935
Centennial Wealth Advisory LLC reports 0.29% increase in ownership of OSB / Old Second Bancorp, Inc.

On April 20, 2026 - Centennial Wealth Advisory LLC filed a 13F-HR form disclosing ownership of 17,507 shares of Old Second Bancorp, Inc. (DE:OSB) valued at $299,370 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 17,457 shares of Old Second Bancorp, Inc.. This represents a change in shares of 0.29% during the quarter. The current value of the position is $318,627 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-20 2026-03-31 13F OLD SECOND BANCORP INC DEL COM 680277100 17,507 50 0.29 353 3.53 0.0855
2026-01-14 2025-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 17,457 58 0.33 340 13.33 0.0900
2025-10-22 2025-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 17,399 53 0.31 301 -2.28 0.0837
2025-07-17 2025-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 17,346 55 0.32 308 6.97 0.0979
2025-04-21 2025-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 17,291 46 0.27 288 -6.21 0.1045
2025-01-27 2024-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 17,245 5,658 48.83 307 70.00 0.1202
2024-10-30 2024-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,587 29 0.25 181 5.26 0.0704
2024-07-22 2024-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,558 32 0.28 171 7.55 0.0742
2024-04-22 2024-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 11,526 34 0.30 160 -10.17 0.0737
2024-01-17 2023-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 11,492 32 0.28 177 14.19 0.0908
2023-10-10 2023-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,460 27 0.24 156 4.03 0.0838
2023-07-17 2023-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,433 40 0.35 149 -6.87 0.0779
2023-04-13 2023-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 11,393 27 0.24 160 -12.09 0.0850
2023-01-17 2022-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 11,366 27 0.24 182 22.97 0.1018
2022-10-12 2022-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,339 31 0.27 148 -1.99 0.0870
2022-07-12 2022-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,308 31 0.27 151 -7.93 0.0846
2022-04-18 2022-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 11,277 32 0.28 164 15.49 0.0896
2022-01-13 2021-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 11,245 31 0.28 142 -2.74 0.0803
2021-10-08 2021-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,214 11,214 146 0.0872
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.