Old Second Bancorp, Inc.
DE ˙ DB ˙ US6802771005
18,20 € ↑0,60 (3,41%)
2026-06-05
DEL PRIS
SecurityDE:OSB / Old Second Bancorp, Inc.
InstitutionBanc Funds Co Llc
Latest Disclosed Ownership1,949,456 shares
Ownership 2.50%
Banc Funds Co Llc ownership in OSB / Old Second Bancorp, Inc.

2022-02-10 - Banc Funds Co Llc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,949,456 shares of Old Second Bancorp, Inc. (DE:OSB). This represents 2.5 percent ownership of the company. In their previous filing dated 2021-02-09 , Banc Funds Co Llc had reported owning 1,550,994 shares, indicating an increase of 25.69 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2022-02-10 2022-02-10 13G/A 1,550,994 1,949,456 25.69 2.50 19.05
2021-02-09 2021-02-09 13G/A 2,175,763 1,550,994 -28.71 2.10 -55.32
2020-02-13 2020-02-13 13G/A 2,175,763 2,175,763 0.00 4.70 0.00
2020-02-12 2020-02-12 13G/A 1,871,951 2,175,763 16.23 4.70 -2.08
2019-02-12 2019-02-12 13G/A 2,517,384 1,871,951 -25.64 4.80 -5.88
2018-02-14 2018-02-14 13G/A 2,565,882 2,517,384 -1.89 5.10 -7.27
2017-02-15 2017-02-15 13G/A 2,475,284 2,565,882 3.66 5.50 -1.79
2016-02-09 2016-02-09 13G 2,475,284 2,475,284 -33.79 5.60
2015-02-17 2015-02-17 13G 2,475,284 5.60

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-14 2026-03-31 13F Old Second Bancorp Common Stock 680277100 1,029,143 123,953 13.69 20,748 17.54 3.8622
2026-02-12 2025-12-31 13F Old Second Bancorp Common Stock 680277100 905,190 -101,188 -10.05 17,651 1.47 3.4939
2025-11-14 2025-09-30 13F Old Second Bancorp Common Stock 680277100 1,006,378 -151,000 -13.05 17,395 -15.27 3.0411
2025-08-14 2025-06-30 13F Old Second Bancorp Common 680277100 1,157,378 -127,200 -9.90 20,532 -3.95 3.1033
2025-05-14 2025-03-31 13F Old Second Bancorp Common Stock 680277100 1,284,578 -331,500 -20.51 21,375 -25.61 2.8182
2025-02-13 2024-12-31 13F Old Second Bancorp Common Stock 680277100 1,616,078 -138,210 -7.88 28,734 5.06 3.1695
2024-11-14 2024-09-30 13F Old Second Bancorp Common 680277100 1,754,288 -221,400 -11.21 27,349 -6.53 2.9683
2024-08-14 2024-06-30 13F Old Second Bancorp Common 680277100 1,975,688 -112,374 -5.38 29,260 104,396.43 3.4709
2024-05-13 2024-03-31 13F Old Second Bancorp Common 680277100 2,088,062 -38,200 -1.80 29 -12.50 3.2665
2024-02-13 2023-12-31 13F Old Second Bancorp Common 680277100 2,126,262 74,952 3.65 33 18.52 3.2359
2023-11-13 2023-09-30 13F Old Second Bancorp Common 680277100 2,051,310 0 0.00 28 3.85 3.2740
2023-08-11 2023-06-30 13F Old Second Bancorp Common 680277100 2,051,310 0 0.00 27 -7.14 3.1554
2023-05-12 2023-03-31 13F Old Second Bancorp Common 680277100 2,051,310 0 0.00 29 -12.50 3.0803
2023-02-13 2022-12-31 13F Old Second Bancorp Common 680277100 2,051,310 -100,884 -4.69 33 -99.89 2.9043
2022-11-14 2022-09-30 13F Old Second Bancorp Common 680277100 2,152,194 -26,500 -1.22 28,086 -3.65 2.5871
2022-08-12 2022-06-30 13F Old Second Bancorp Common 680277100 2,178,694 20,000 0.93 29,151 -6.93 2.6343
2022-05-11 2022-03-31 13F Old Second Bancorp Common 680277100 2,158,694 209,238 10.73 31,323 27.62 2.4582
2022-02-11 2021-12-31 13F Old Second Bancorp Common 680277100 1,949,456 314,228 19.22 24,544 14.93 1.8491
2021-11-12 2021-09-30 13F Old Second Bancorp Common 680277100 1,635,228 -32,451 -1.95 21,356 3.27 1.6350
2021-08-12 2021-06-30 13F/A-1 Old Second Bancorp Common 680277100 1,667,679 101,685 6.49 20,679 -0.04 1.5184
2021-08-12 2021-06-30 13F Old Second Bancorp Common 680277100 1,667,679 101,685 20,679 1.5004
2021-05-12 2021-03-31 13F Old Second Bancorp Common 680277100 1,565,994 15,000 0.97 20,687 32.06 1.5705
2021-02-16 2020-12-31 13F Old Second Bancorp Common 680277100 1,550,994 121,094 8.47 15,665 46.07 1.4816
2020-11-12 2020-09-30 13F Old Second Bancorp Common 680277100 1,429,900 -355,700 -19.92 10,724 -22.80 1.3927
2020-08-12 2020-06-30 13F Old Second Bancorp Common 680277100 1,785,600 -245,000 -12.07 13,892 -0.99 1.6542
2020-05-14 2020-03-31 13F Old Second Bancorp Common 680277100 2,030,600 -145,163 -6.67 14,031 -52.13 1.6710
2020-02-12 2019-12-31 13F Old Second Bancorp Common 680277100 2,175,763 61,790 2.92 29,308 13.45 2.0415
2019-11-14 2019-09-30 13F Old Second Bancorp Common 680277100 2,113,973 142,500 7.23 25,833 2.61 1.9493
2019-08-12 2019-06-30 13F Old Second Bancorp Common 680277100 1,971,473 105,446 5.65 25,176 7.16 1.9427
2019-05-13 2019-03-31 13F Old Second Bancorp Common 680277100 1,866,027 -5,924 -0.32 23,493 -2.64 1.7559
2019-02-11 2018-12-31 13F Old Second Bancorp COMMON STOCK 680277100 1,871,951 -68,280 -3.52 24,129 -19.51 1.8192
2018-11-13 2018-09-30 13F Old Second Bancorp Common 680277100 1,940,231 -233,375 -10.74 29,977 -4.23 1.7768
2018-08-13 2018-06-30 13F Old Second Bancorp Common 680277100 2,173,606 -209,078 -8.77 31,300 -5.49 1.6189
2018-05-11 2018-03-31 13F Old Second Bancorp Common 680277100 2,382,684 -134,700 -5.35 33,119 -3.62 1.6950
2018-02-13 2017-12-31 13F Old Second Bancorp Common 680277100 2,517,384 73,000 2.99 34,362 4.52 1.6006
2017-11-14 2017-09-30 13F Old Second Bancorp Common 680277100 2,444,384 -15,698 -0.64 32,877 15.71 1.4733
2017-08-11 2017-06-30 13F Old Second Bancorp Common 680277100 2,460,082 -121,100 -4.69 28,414 -2.15 1.2929
2017-05-12 2017-03-31 13F Old Second Bancorp Common 680277100 2,581,182 15,300 0.60 29,038 2.42 1.2515
2017-02-14 2016-12-31 13F Old Second Bancorp Common 680277100 2,565,882 0 0.00 28,353 32.98 1.2033
2016-11-15 2016-09-30 13F Old Second Bancorp Common 680277100 2,565,882 52,700 2.10 21,322 24.22 1.1777
2016-08-12 2016-06-30 13F Old Second Bancorp Common 680277100 2,513,182 37,898 1.53 17,165 -3.28 1.0010
2016-05-16 2016-03-31 13F Old Second Bancorp Common 680277100 2,475,284 0 0.00 17,748 -8.54 1.1163
2016-02-12 2015-12-31 13F Old Second Bancorp Common 680277100 2,475,284 0 0.00 19,406 25.84 1.1064
2015-11-12 2015-09-30 13F Old Second Bancorp Common 680277100 2,475,284 0 0.00 15,421 -5.61 0.9453
2015-08-11 2015-06-30 13F Old Second Bancorp Common 680277100 2,475,284 0 0.00 16,337 15.38 0.9944
2015-05-14 2015-03-31 13F/A-1 Old Second Bancorp Common 680277100 2,475,284 0 0.00 14,159 6.52 0.9315
2015-05-14 2015-03-31 13F Old Second Bancorp Common 680277100 2,475,284 14,159
2015-02-12 2014-12-31 13F Old Second Bancorp Common 680277100 2,475,284 145,800 6.26 13,292 18.63 0.9161
2014-11-12 2014-09-30 13F Old Second Bancorp Common 680277100 2,329,484 0 0.00 11,205 -3.22 0.8586
2014-08-13 2014-06-30 13F Old Second Bancorp Common 680277100 2,329,484 1,881,760 420.29 11,578 462.04 0.8392
2014-05-14 2014-03-31 13F Old Second Bancorp Common 680277100 447,724 41,700 10.27 2,060 9.81 0.1538
2014-02-14 2013-12-31 13F Old Second Bancorp Common 680277100 406,024 73,774 22.20 1,876 -0.79 0.1427
2013-11-13 2013-09-30 13F Old Second Bancorp Common 680277100 332,250 48,500 17.09 1,891 20.75 0.1556
2013-08-07 2013-06-30 13F Old Second Bancorp Common 680277100 283,750 283,750 1,566 0.1404
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.