Old Second Bancorp, Inc.
DE ˙ DB ˙ US6802771005
18,20 € ↑0,60 (3,41%)
2026-06-05
DEL PRIS
SecurityDE:OSB / Old Second Bancorp, Inc.
InstitutionDeutsche Bank Ag\
Latest Disclosed Ownership46,477 shares
Latest Disclosed Value $ 936,976
Deutsche Bank Ag\ reports 12.84% increase in ownership of OSB / Old Second Bancorp, Inc.

On May 6, 2026 - Deutsche Bank Ag\ filed a 13F-HR form disclosing ownership of 46,477 shares of Old Second Bancorp, Inc. (DE:OSB) valued at $794,757 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 41,187 shares of Old Second Bancorp, Inc.. This represents a change in shares of 12.84% during the quarter. The current value of the position is $845,881 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)
2026-05-06 2026-03-31 13F OLD SECOND BANCORP INC DEL COM 680277100 46,477 5,290 12.84 937 16.56 0.0003
2026-02-11 2025-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 41,187 3,353 8.86 803 22.78 0.0003
2025-11-13 2025-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 37,834 6,741 21.68 654 18.69 0.0002
2025-08-12 2025-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 31,093 -6,148 -16.51 552 -10.99 0.0002
2025-05-09 2025-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 37,241 -3,764 -9.18 620 -15.09 0.0002
2025-06-30 2024-12-31 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 41,005 14,113 52.48 729 73.99 0.0003
2025-02-14 2024-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 41,005 14,113 729 0.0003
2025-06-26 2024-09-30 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 26,892 6,207 30.01 419 36.93 0.0002
2024-11-13 2024-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 26,892 6,207 419 0.0002
2025-06-12 2024-06-30 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 20,685 -390 -1.85 306 5.15 0.0001
2024-08-14 2024-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 20,685 -390 306 0.0001
2025-06-02 2024-03-31 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 21,075 4,146 24.49 292 11.49 0.0001
2024-05-15 2024-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 21,075 4,146 292 0.0001
2024-02-14 2023-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 16,929 -595 -3.40 261 9.66 0.0001
2023-11-24 2023-09-30 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 17,524 497 2.92 239 7.21 0.0002
2023-11-09 2023-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 17,524 497 239 0.0001
2023-08-14 2023-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 17,027 -8,968 -34.50 222 -39.18 0.0001
2023-05-15 2023-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 25,995 8,509 48.66 365 30.36 0.0002
2023-02-13 2022-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 17,486 283 1.65 280 25.00 0.0002
2022-11-14 2022-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 17,203 -2,827 -14.11 224 -16.42 0.0001
2022-08-11 2022-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 20,030 4,978 33.07 268 22.94 0.0001
2022-05-13 2022-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 15,052 -1,797 -10.67 218 2.83 0.0001
2022-02-16 2021-12-31 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 16,849 434 2.64 212 -1.40 0.0001
2022-02-11 2021-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 16,849 434 212 0.0000
2021-11-04 2021-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 16,415 -3,818 -18.87 215 -14.34 0.0001
2021-08-11 2021-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 20,233 1,966 10.76 251 3.72 0.0001
2021-05-13 2021-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 18,267 -1,724 -8.62 242 20.40 0.0001
2021-02-16 2020-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 19,991 5,341 36.46 201 82.73 0.0001
2020-11-12 2020-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 14,650 -614 -4.02 110 -7.56 0.0001
2020-08-13 2020-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 15,264 -13,955 -47.76 119 -41.09 0.0001
2020-05-14 2020-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 29,219 -9,008 -23.56 202 -60.70 0.0002
2020-02-14 2019-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 38,227 98 0.26 514 10.78 0.0003
2019-11-14 2019-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 38,129 -70,963 -65.05 464 -66.67 0.0003
2019-08-14 2019-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 109,092 -43,246 -28.39 1,392 -27.39 0.0008
2019-05-15 2019-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 152,338 28,237 22.75 1,917 18.99 0.0011
2019-04-01 2018-12-31 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 124,101 -114,911 -48.08 1,611 -56.38 0.0011
2019-02-14 2018-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 124,101 -107,209 1,611
2021-12-21 2018-09-30 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 239,012 19,524 8.90 3,693 16.87 0.0019
2018-11-14 2018-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 231,310 11,822 3,572 0.0025
2020-04-21 2018-06-30 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 219,488 28,759 15.08 3,160 19.25 0.0016
2018-08-14 2018-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 210,717 19,988 3,032 2,013.8468
2019-10-23 2018-03-31 13F/A-2 OLD SECOND BANCORP INC ILL COM 680277100 190,729 -33,170 -14.81 2,650 -13.23 0.0013
2019-10-18 2018-03-31 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 190,729 0 2,650 0.0013
2018-05-15 2018-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 184,680 -39,219 2,565
2018-02-14 2017-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 223,899 17,941 8.71 3,054 10.29 0.0020
2017-11-14 2017-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 205,958 -9,477 -4.40 2,769 11.34 0.0019
2017-08-11 2017-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 215,435 81,468 60.81 2,487 65.14 0.0018
2017-05-15 2017-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 133,967 -889 -0.66 1,506 1.21 0.0011
2017-02-14 2016-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 134,856 46,157 52.04 1,488 102.17 0.0012
2016-11-14 2016-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 88,699 84,285 1,909.49 736 2,437.93 0.0005
2016-08-15 2016-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 4,414 -65 -1.45 29 -9.37 0.0000
2016-05-16 2016-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 4,479 -5,697 -55.98 32 -58.97 0.0000
2016-02-16 2015-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 10,176 -54,541 -84.28 78 -80.55 0.0001
2015-11-17 2015-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 64,717 -31,673 -32.86 401 -36.85 0.0003
2015-08-12 2015-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 96,390 87,586 994.84 635 1,170.00 0.0004
2015-05-15 2015-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 8,804 -6,567 -42.72 50 -39.02 0.0000
2015-02-13 2014-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 15,371 8,944 139.16 82 173.33 0.0001
2014-11-14 2014-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 6,427 -11,473 -64.09 30 -65.91 0.0000
2014-08-15 2014-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 17,900 1,724 10.66 88 18.92 0.0001
2014-05-15 2014-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 16,176 -1,024 -5.95 74 -6.33 0.0001
2014-02-24 2013-12-31 13F/A-1 OLD SECOND BANCORP INC ILL COM 680277100 17,200 -7,412 -30.12 79 -43.17 0.0001
2014-02-18 2013-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 17,200 79
2013-11-18 2013-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 24,612 24,612 139 0.0001
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.