Old Second Bancorp (OSBC)
Old Second Bancorp on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as state commercial banks.
2.7M
Short interest
settlement 2026-09-30
5.4
Days to cover
-0.3 days vs prior
51.8%
Short share of volume
2026-10-23
10,359
Fails to deliver
settlement 2026-09-11
Wed 20 Jan
Next earnings
estimated date
-$4.3M
Insider flow, 90 days
0 buys, 7 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in OSBC is 2,745,379 shares, up 742,808 shares over the last month. Over the last 48 readings it ranged from 246,964 shares (31 October 2024) to 2,745,379 shares (30 September 2026). The latest reading sits at the top of that range. At the reported average volume of 513K shares a day that is 5.4 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/osbc" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 2,745,379 | +11.2% | 512,663 | 5.36 |
| 2026-09-15 | 2,469,231 | +23.3% | 435,557 | 5.67 |
| 2026-08-31 | 2,002,571 | +9.5% | 360,778 | 5.55 |
| 2026-08-14 | 1,828,676 | +7.2% | 421,465 | 4.34 |
| 2026-07-31 | 1,706,682 | -1.3% | 502,964 | 3.39 |
| 2026-07-15 | 1,729,893 | -12.2% | 342,807 | 5.05 |
| 2026-06-30 | 1,969,834 | +13.6% | 491,844 | 4.00 |
| 2026-06-15 | 1,734,571 | +1.3% | 297,374 | 5.83 |
| 2026-05-29 | 1,712,898 | +1.0% | 341,325 | 5.02 |
| 2026-05-15 | 1,696,205 | -4.3% | 370,015 | 4.58 |
| 2026-04-30 | 1,771,562 | +24.6% | 491,849 | 3.60 |
| 2026-04-15 | 1,421,624 | -18.6% | 397,315 | 3.58 |
| 2026-03-31 | 1,746,879 | +11.0% | 402,660 | 4.34 |
| 2026-03-13 | 1,573,727 | +40.0% | 406,184 | 3.87 |
| 2026-02-27 | 1,124,152 | -23.1% | 298,321 | 3.77 |
| 2026-02-13 | 1,461,147 | +28.8% | 323,886 | 4.51 |
| 2026-01-30 | 1,134,585 | +1.7% | 423,364 | 2.68 |
| 2026-01-15 | 1,115,152 | +17.6% | 331,416 | 3.36 |
| 2025-12-31 | 948,028 | -2.6% | 248,199 | 3.82 |
| 2025-12-15 | 972,940 | -15.7% | 295,401 | 3.29 |
| 2025-11-28 | 1,154,177 | -6.5% | 256,694 | 4.50 |
| 2025-11-14 | 1,234,153 | +7.8% | 326,789 | 3.78 |
| 2025-10-31 | 1,144,967 | +9.0% | 485,680 | 2.36 |
| 2025-10-15 | 1,050,824 | +4.3% | 302,056 | 3.48 |
| 2025-09-30 | 1,007,988 | +112.3% | 422,788 | 2.38 |
| 2025-09-15 | 474,858 | +17.3% | 223,799 | 2.12 |
| 2025-08-29 | 404,870 | +0.8% | 176,268 | 2.30 |
| 2025-08-15 | 401,799 | -4.8% | 173,578 | 2.31 |
| 2025-07-31 | 422,257 | +8.0% | 239,283 | 1.76 |
| 2025-07-15 | 391,161 | -7.3% | 252,078 | 1.55 |
| 2025-06-30 | 421,799 | -13.3% | 238,608 | 1.77 |
| 2025-06-13 | 486,198 | +5.0% | 172,913 | 2.81 |
| 2025-05-30 | 463,273 | -42.7% | 202,393 | 2.29 |
| 2025-05-15 | 808,745 | +63.7% | 219,017 | 3.69 |
| 2025-04-30 | 493,989 | -19.5% | 219,040 | 2.26 |
| 2025-04-15 | 613,447 | +0.3% | 257,561 | 2.38 |
| 2025-03-31 | 611,830 | +22.0% | 226,237 | 2.70 |
| 2025-03-14 | 501,410 | +23.9% | 200,928 | 2.50 |
| 2025-02-28 | 404,706 | +36.9% | 249,117 | 1.62 |
| 2025-02-14 | 295,618 | -3.0% | 186,222 | 1.59 |
| 2025-01-31 | 304,809 | -40.9% | 276,963 | 1.10 |
| 2025-01-15 | 515,700 | -9.1% | 244,747 | 2.11 |
| 2024-12-31 | 567,078 | +6.4% | 271,701 | 2.09 |
| 2024-12-13 | 532,777 | +60.1% | 206,491 | 2.58 |
| 2024-11-29 | 332,694 | +4.1% | 203,678 | 1.63 |
| 2024-11-15 | 319,458 | +29.4% | 343,346 | 1.00 |
| 2024-10-31 | 246,964 | -56.4% | 316,637 | 1.00 |
| 2024-10-15 | 566,325 | -38.2% | 225,832 | 2.51 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of OSBC volume is 51.8%, up 17.3 points over the last five sessions. Over the last 30 readings it ranged from 29.3% (21 October 2026) to 87.2% (9 October 2026). The latest reading is 7.9 points below the 30-session average of 59.7%, on 213K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 110K | 213K | 51.8% | 0 |
| 2026-10-22 | 106K | 272K | 39.0% | 0 |
| 2026-10-21 | 33K | 112K | 29.3% | 0 |
| 2026-10-20 | 53K | 175K | 30.3% | 0 |
| 2026-10-19 | 50K | 127K | 39.6% | 0 |
| 2026-10-16 | 70K | 204K | 34.5% | 0 |
| 2026-10-15 | 89K | 173K | 51.2% | 0 |
| 2026-10-14 | 90K | 148K | 61.0% | 0 |
| 2026-10-13 | 114K | 140K | 81.8% | 0 |
| 2026-10-12 | 98K | 144K | 68.2% | 0 |
| 2026-10-09 | 82K | 94K | 87.2% | 0 |
| 2026-10-08 | 127K | 159K | 79.5% | 84 |
| 2026-10-07 | 84K | 111K | 75.9% | 0 |
| 2026-10-06 | 137K | 214K | 64.1% | 0 |
| 2026-10-05 | 84K | 134K | 62.7% | 12 |
| 2026-10-02 | 89K | 143K | 62.4% | 78 |
| 2026-10-01 | 101K | 153K | 66.1% | 0 |
| 2026-09-30 | 50K | 85K | 59.4% | 0 |
| 2026-09-29 | 53K | 86K | 61.4% | 406 |
| 2026-09-28 | 55K | 79K | 69.1% | 5 |
| 2026-09-25 | 107K | 216K | 49.4% | 69 |
| 2026-09-24 | 73K | 113K | 64.6% | 11 |
| 2026-09-23 | 76K | 132K | 57.5% | 14 |
| 2026-09-22 | 54K | 78K | 68.9% | 0 |
| 2026-09-21 | 59K | 92K | 64.2% | 0 |
| 2026-09-18 | 70K | 117K | 60.0% | 0 |
| 2026-09-17 | 67K | 112K | 59.6% | 124 |
| 2026-09-16 | 61K | 105K | 58.4% | 461 |
| 2026-09-15 | 83K | 127K | 65.6% | 0 |
| 2026-09-14 | 88K | 127K | 69.3% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 11 September 2026, the fails-to-deliver balance in OSBC is 10,359 shares, up 10,347 shares over the last settlement date. Over the last 30 readings it ranged from 11 shares (15 April 2026) to 32,920 shares (22 July 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-11 | 10,359 | $25.53 | $264K |
| 2026-09-08 | 12 | $25.72 | $309 |
| 2026-09-04 | 392 | $25.68 | $10K |
| 2026-09-01 | 18,994 | $25.08 | $476K |
| 2026-08-31 | 558 | $25.24 | $14K |
| 2026-08-24 | 5,959 | $25.34 | $151K |
| 2026-08-06 | 10,173 | $25.89 | $263K |
| 2026-07-31 | 1,573 | $25.34 | $40K |
| 2026-07-30 | 1,379 | $25.29 | $35K |
| 2026-07-22 | 32,920 | $23.68 | $780K |
| 2026-07-09 | 32,304 | $22.71 | $734K |
| 2026-07-01 | 201 | $23.32 | $5K |
| 2026-06-24 | 2,612 | $22.57 | $59K |
| 2026-06-10 | 100 | $21.94 | $2K |
| 2026-06-01 | 88 | $21.32 | $2K |
| 2026-05-22 | 1,246 | $21.08 | $26K |
| 2026-05-15 | 1,445 | $20.71 | $30K |
| 2026-05-01 | 2,332 | $20.61 | $48K |
| 2026-04-29 | 1,342 | $20.91 | $28K |
| 2026-04-15 | 11 | $21.61 | $238 |
| 2026-04-06 | 2,220 | $20.74 | $46K |
| 2026-04-02 | 159 | $20.45 | $3K |
| 2026-01-30 | 406 | $19.98 | $8K |
| 2026-01-16 | 87 | $20.99 | $2K |
| 2025-12-12 | 444 | $20.63 | $9K |
| 2025-12-10 | 26 | $19.80 | $515 |
| 2025-10-23 | 6,473 | $17.95 | $116K |
| 2025-10-15 | 298 | $17.97 | $5K |
| 2025-10-14 | 4,688 | $17.24 | $81K |
| 2025-09-23 | 87 | $17.90 | $2K |
Insider trades
SEC Form 4, newest first. JSONInsiders at OSBC reported 7 open-market sells worth $4.3M in the last 90 days and no open-market buys. Latest filing: COLLINS GARY S (VICE CHAIRMAN) on 2026-09-30.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | COLLINS GARY S | VICE CHAIRMAN | Other transaction | 30 | $0.00 | $0 | 7K |
| 2026-09-30 | Pilmer Donald | EVP | Other transaction | 11 | $0.00 | $0 | 4K |
| 2026-09-30 | Gartelmann Richard A JR | EVP | Other transaction | 35 | $0.00 | $0 | 13K |
| 2026-09-30 | ADAMS BRADLEY S. | CFO & COO | Other transaction | 28 | $0.00 | $0 | 10K |
| 2026-09-30 | Eccher James | CHAIRMAN AND CEO | Other transaction | 92 | $0.00 | $0 | 34K |
| 2026-09-30 | Eccher James | CHAIRMAN AND CEO | Other transaction | 17 | $0.00 | $0 | 6K |
| 2026-09-23 | COLLINS GARY S | VICE CHAIRMAN | Sell | 16K | $24.69 | $395K | 14K |
| 2026-09-08 | MCLEAN HUGH H | Director | Sell | 25K | $25.63 | $641K | 135K |
| 2026-09-04 | COLLINS GARY S | VICE CHAIRMAN | Sell | 5K | $25.70 | $129K | 53K |
| 2026-09-03 | MCLEAN HUGH H | Director | Sell | 25K | $25.73 | $643K | 135K |
| 2026-09-02 | Campbell Darin Patrick | President, Powersports Lending | Sell | 24K | $25.53 | $613K | 251K |
| 2026-08-12 | Eccher James | CHAIRMAN AND CEO | Sell | 19K | $25.61 | $495K | 303K |
| 2026-08-11 | Eccher James | CHAIRMAN AND CEO | Sell | 56K | $25.46 | $1.4M | 323K |
| 2026-08-10 | YORK JILL E | Director | Small acquisition | 12 | $25.38 | $302 | 4K |
| 2026-08-10 | Lyons Billy J Jr. | Director | Grant | 20 | $25.38 | $508 | 20K |
| 2026-06-30 | Pilmer Donald | EVP | Other transaction | 14 | $0.00 | $0 | 4K |
| 2026-06-30 | Pilmer Donald | EVP | Other transaction | 1 | $0.00 | $0 | 184 |
| 2026-06-30 | Gartelmann Richard A JR | EVP | Other transaction | 42 | $0.00 | $0 | 13K |
| 2026-06-30 | Eccher James | CHAIRMAN AND CEO | Other transaction | 111 | $0.00 | $0 | 33K |
| 2026-06-30 | Eccher James | CHAIRMAN AND CEO | Other transaction | 21 | $0.00 | $0 | 6K |
| 2026-06-30 | COLLINS GARY S | VICE CHAIRMAN | Other transaction | 37 | $0.00 | $0 | 7K |
| 2026-06-30 | ADAMS BRADLEY S. | CFO & COO | Other transaction | 34 | $0.00 | $0 | 10K |
| 2026-05-22 | COLLINS GARY S | VICE CHAIRMAN | Sell | 5K | $21.12 | $108K | 58K |
| 2026-05-21 | COLLINS GARY S | VICE CHAIRMAN | Sell | 10K | $21.12 | $211K | 63K |
| 2026-05-11 | YORK JILL E | Director | Small acquisition | 14 | $20.90 | $300 | 4K |
| 2026-05-11 | Pilmer Donald | EVP | Sell | 25K | $20.75 | $519K | 48K |
| 2026-05-11 | Lyons Billy J Jr. | Director | Buy | 24 | $20.90 | $502 | 20K |
| 2026-05-08 | COLLINS GARY S | VICE CHAIRMAN | Sell | 5K | $21.23 | $106K | 73K |
| 2026-05-08 | COLLINS GARY S | VICE CHAIRMAN | Sell | 10K | $21.24 | $212K | 30K |
| 2026-03-31 | Pilmer Donald | EVP | Other transaction | 1 | $0.00 | $0 | 183 |
| 2026-03-31 | Pilmer Donald | EVP | Other transaction | 13 | $0.00 | $0 | 4K |
| 2026-03-31 | Gartelmann Richard A JR | EVP | Other transaction | 43 | $0.00 | $0 | 13K |
| 2026-03-31 | Eccher James | CHAIRMAN AND CEO | Other transaction | 22 | $0.00 | $0 | 6K |
| 2026-03-31 | Eccher James | CHAIRMAN AND CEO | Other transaction | 369 | $0.00 | $0 | 33K |
| 2026-03-31 | COLLINS GARY S | VICE CHAIRMAN | Other transaction | 253 | $0.00 | $0 | 7K |
| 2026-03-31 | ADAMS BRADLEY S. | CFO & COO | Other transaction | 35 | $0.00 | $0 | 10K |
| 2026-03-20 | COLLINS GARY S | VICE CHAIRMAN | Sell | 22K | $19.38 | $429K | 40K |
| 2026-03-02 | Pilmer Donald | EVP | Tax withholding | 3K | $19.91 | $54K | 73K |
| 2026-03-02 | Pilmer Donald | EVP | Grant | 9K | $0.00 | $0 | 67K |
| 2026-03-02 | Gartelmann Richard A JR | EVP | Tax withholding | 2K | $19.91 | $31K | 30K |
| 2026-03-02 | Gartelmann Richard A JR | EVP | Grant | 5K | $0.00 | $0 | 27K |
| 2026-03-02 | Eccher James | CHAIRMAN AND CEO | Tax withholding | 13K | $19.91 | $256K | 378K |
| 2026-03-02 | Eccher James | CHAIRMAN AND CEO | Grant | 44K | $0.00 | $0 | 391K |
| 2026-03-02 | COLLINS GARY S | VICE CHAIRMAN | Tax withholding | 4K | $19.91 | $84K | 16K |
| 2026-03-02 | COLLINS GARY S | VICE CHAIRMAN | Grant | 14K | $0.00 | $0 | 5K |
| 2026-03-02 | ADAMS BRADLEY S. | CFO & COO | Tax withholding | 5K | $19.91 | $91K | 160K |
| 2026-03-02 | ADAMS BRADLEY S. | CFO & COO | Grant | 16K | $0.00 | $0 | 165K |
| 2026-02-21 | Williams John JR | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | Pilmer Donald | EVP | Tax withholding | 2K | $20.57 | $37K | 45K |
| 2026-02-21 | Temple Rocks Patti | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | YORK JILL E | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | MCLEAN HUGH H | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | Lyons Billy J Jr. | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | Kotche Keith | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | KLAESER DENNIS L | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | Gartelmann Richard A JR | EVP | Tax withholding | 894 | $20.57 | $18K | 24K |
| 2026-02-21 | Finn Barry | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | Eccher James | CHAIRMAN AND CEO | Tax withholding | 8K | $20.57 | $155K | 213K |
| 2026-02-21 | COLLINS GARY S | VICE CHAIRMAN | Tax withholding | 3K | $20.57 | $57K | 46K |
| 2026-02-21 | BONIFAS EDWARD | Director | Tax withholding | 3K | $20.57 | $63K | 11K |
| 2026-02-21 | ADAMS BRADLEY S. | CFO & COO | Tax withholding | 3K | $20.57 | $60K | 94K |
| 2026-02-18 | Campbell Darin Patrick | President, Powersports Lending | Sell | 35K | $20.94 | $733K | 275K |
| 2026-02-17 | Williams John JR | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | Pilmer Donald | EVP | Grant | 11K | $0.00 | $0 | 50K |
| 2026-02-17 | Temple Rocks Patti | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | YORK JILL E | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | MCLEAN HUGH H | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | Lyons Billy J Jr. | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | Kotche Keith | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | KLAESER DENNIS L | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | Gartelmann Richard A JR | EVP | Grant | 6K | $0.00 | $0 | 26K |
| 2026-02-17 | Finn Barry | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | Eccher James | CHAIRMAN AND CEO | Grant | 54K | $0.00 | $0 | 238K |
| 2026-02-17 | Campbell Darin Patrick | President, Powersports Lending | Grant | 11K | $0.00 | $0 | 11K |
| 2026-02-17 | COLLINS GARY S | VICE CHAIRMAN | Grant | 9K | $0.00 | $0 | 54K |
| 2026-02-17 | BONIFAS EDWARD | Director | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-17 | ADAMS BRADLEY S. | CFO & COO | Grant | 25K | $0.00 | $0 | 103K |
| 2026-02-13 | Campbell Darin Patrick | President, Powersports Lending | Sell | 91 | $20.70 | $2K | 310K |
| 2026-02-09 | YORK JILL E | Director | Small acquisition | 14 | $21.21 | $300 | 4K |
| 2026-02-09 | Lyons Billy J Jr. | Director | Grant | 23 | $21.21 | $488 | 17K |
| 2026-02-05 | Gartelmann Richard A JR | EVP | Sell | 2K | $20.98 | $42K | 25K |
| 2026-01-15 | Ladowicz John | Director | Sell | 2K | $20.96 | $39K | 145K |
| 2026-01-15 | Ladowicz John | Director | Sell | 3K | $20.94 | $61K | 147K |
| 2025-12-31 | Pilmer Donald | EVP | Other transaction | 15 | $0.00 | $0 | 4K |
| 2025-12-31 | Gartelmann Richard A JR | EVP | Other transaction | 47 | $0.00 | $0 | 13K |
| 2025-12-31 | Eccher James | CHAIRMAN AND CEO | Other transaction | 24 | $0.00 | $0 | 6K |
| 2025-12-31 | Eccher James | CHAIRMAN AND CEO | Other transaction | 125 | $0.00 | $0 | 33K |
| 2025-12-31 | COLLINS GARY S | VICE CHAIRMAN | Other transaction | 40 | $0.00 | $0 | 7K |
| 2025-12-31 | ADAMS BRADLEY S. | CFO & COO | Grant | 39 | $0.00 | $0 | 10K |
| 2025-12-09 | Ladowicz John | Director | Sell | 13K | $20.00 | $250K | 150K |
| 2025-11-26 | Ladowicz John | Director | Sell | 13K | $19.01 | $250K | 162K |
| 2025-11-10 | YORK JILL E | Director | Small acquisition | 16 | $18.35 | $298 | 4K |
| 2025-11-10 | Lyons Billy J Jr. | Director | Grant | 27 | $18.35 | $495 | 17K |
| 2025-10-31 | Campbell Darin Patrick | President, Powersports Lending | Sell | 31K | $17.89 | $557K | 0 |
| 2025-10-30 | Campbell Darin Patrick | President, Powersports Lending | Sell | 26K | $18.27 | $482K | 31K |
| 2025-09-30 | Pilmer Donald | EVP | Other transaction | 14 | $0.00 | $0 | 4K |
| 2025-09-30 | Pilmer Donald | EVP | Other transaction | 1 | $0.00 | $0 | 182 |
| 2025-09-30 | Gartelmann Richard A JR | EVP | Other transaction | 44 | $0.00 | $0 | 13K |
| 2025-09-30 | Eccher James | CHAIRMAN AND CEO | Other transaction | 134 | $0.00 | $0 | 33K |
| 2025-09-30 | Eccher James | CHAIRMAN AND CEO | Other transaction | 22 | $0.00 | $0 | 6K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON4 Form 144 notices on file for OSBC worth $3.6M at the prices reported; 4 in the last 90 days worth $3.6M. Latest: COLLINS GARY S filed on 2026-09-23 to sell 20,000 shares ($493K) from 2026-09-23.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-09-23 | COLLINS GARY SOfficer | 20K | $493K | 0.039% | 2026-09-23 | The Charles Schwab Corporation |
| 2026-09-08 | HUGH H. MCLEANDirector | 25K | $642K | 0.049% | 2026-09-08 | UBS Financial Services Inc |
| 2026-09-02 | Campbell Darin PatrickDirector | 24K | $615K | 0.047% | 2026-09-02 | Charles Schwab Corp. Inc. |
| 2026-08-11 | Eccher JamesOfficer, Director | 75K | $1.9M | 0.147% | 2026-08-11 | THE CHARLES SCHWAB CORPORATION |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON1 holder reports 5% or more of OSBC in its latest filing, on Schedule 13G (passive). The holder is Dimensional Fund Advisors LP at 5.1% of the class (2,575,752 shares), filed 2026-10-08 for an event on 2026-09-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-08 | 13G | Dimensional Fund Advisors LPinvestment adviser | 2.6M | 5.1% | 2026-09-30 |
| 2026-03-27 | 13G/Ano. 1 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding OSBC at their latest 13F. JSON6 of the 30 tracked managers held OSBC at their latest 13F, $26.2M in total at quarter-end prices. AQR Capital Management is the largest at $9.0M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 2 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 386K | $9.0M | 0.00% | -6K |
| Citadel Advisors | 2026-06-30 | 304K | $7.1M | 0.00% | +244K |
| Two Sigma Investments | 2026-06-30 | 201K | $4.7M | 0.00% | +133K |
| D. E. Shaw & Co. | 2026-06-30 | 114K | $2.7M | 0.00% | new |
| Fisher Asset Management | 2026-06-30 | 97K | $2.3M | 0.00% | 0 |
| Renaissance Technologies | 2026-06-30 | 21K | $495K | 0.00% | -69K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn FY 2025 it generated $122.3M of operating cash flow and spent $7.4M on buybacks and $12.2M on dividends.
- Cash
- $143.3M
- Equity
- $902.8M
- Total assets
- $6.87B
- Shares outstanding
- 50,875,716
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | n/a | $28.2M | n/a | 0.54 |
| Q1 FY 2026 | 2026-03-31 | n/a | $25.6M | n/a | 0.48 |
| Q4 FY 2025derived | 2025-12-31 | n/a | $28.8M | n/a | n/a |
| Q3 FY 2025 | 2025-09-30 | n/a | $9.9M | n/a | 0.18 |
| Q2 FY 2025 | 2025-06-30 | n/a | $21.8M | n/a | 0.48 |
| Q1 FY 2025 | 2025-03-31 | n/a | $19.8M | n/a | 0.43 |
| Q4 FY 2024derived | 2024-12-31 | n/a | $19.1M | n/a | n/a |
| Q3 FY 2024 | 2024-09-30 | n/a | $23.0M | n/a | 0.50 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | n/a | $80.3M | $122.3M | $4.5M | $7.4M | $12.2M |
| FY 2024 | 2024-12-31 | n/a | $85.3M | $131.5M | $10.8M | $1.0M | $9.4M |
| FY 2023 | 2023-12-31 | n/a | $91.7M | $116.4M | $12.4M | $605K | $8.9M |
| FY 2022 | 2022-12-31 | n/a | $67.4M | $97.3M | $4.3M | $455K | $8.9M |
| FY 2021 | 2021-12-31 | n/a | $20.0M | $31.0M | $2.0M | $10.4M | $4.6M |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-08-04 from the cover page.
What this page is
Old Second Bancorp in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Old Second Bancorp (OSBC), SEC CIK 357173, listed on Nasdaq, classified by the SEC as state commercial banks. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-11.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-09-23.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-08.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-10-21.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-30.JSON and CSV
- Company record
- EDGAR filing index for CIK 357173Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as state commercial banks
Other company pages
Datasets
Frequently Asked Questions
How much of OSBC is sold short?
What is OSBC's daily short volume?
Does OSBC have fails to deliver?
Are OSBC insiders buying or selling?
Have OSBC insiders filed to sell?
Who owns 5% or more of OSBC?
What did OSBC report last quarter?
Which tracked 13F managers own OSBC?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.