Quick Takeaways
- OSBC - OLD SECOND BANCORP INC has 21 insiders with reported activity on this page.
- Net insider value flow over the last year: -$2,845,143.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 21 Insiders of OLD SECOND BANCORP INC
- Symbol
- OSBC on Nasdaq
- Location
- Aurora, IL
What Changed
- Buy value: $415; sell value: $2,845,558.
- Net share flow: -147,197.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$2,845,143.
Buys
$415
Shares: 25
Insiders: 1
Sells
$2,845,559
Shares: 147,222
Insiders: 4
Net
-$2,845,143
Shares: -147,197
Insiders: -3
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 59,245 | $0 | $1,206,169 | -$1,206,169 |
| 3-6 | 0 | 87,977 | $0 | $1,639,390 | -$1,639,390 |
| 6-9 | 25 | 0 | $415 | $0 | +$415 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
OLD SECOND BANCORP INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| James Eccher | CHAIRMAN AND CEO, Director | $12,541,162 | Mixed | 31 Mar 2026 | ||
| Keith Acker | Director | $11,440,102 | Mixed | 01 Dec 2021 | ||
| Darin Patrick Campbell | President, Powersports Lending, Director | $5,486,288 | -$1,774,426 | -24% | Market | 18 Feb 2026 |
| Bradley S. Adams | Cfo & Coo | $5,257,976 | Mixed | 31 Mar 2026 | ||
| Keith Kotche | Director | $3,901,931 | Mixed | 17 Feb 2026 | ||
| John Ladowicz | Director | $3,741,295 | -$599,747 | -14% | Mixed | 15 Jan 2026 |
| Edward Bonifas | Director | $3,659,573 | Mixed | 21 Feb 2026 | ||
| Gary S. Collins | VICE CHAIRMAN, Director | $3,383,404 | -$429,435 | -11% | Mixed | 31 Mar 2026 |
| Hugh H. Mclean | Director | $3,360,273 | Mixed | 17 Feb 2026 | ||
| Donald Pilmer | Evp | $2,455,433 | Mixed | 31 Mar 2026 | ||
| Barry Finn | Director | $1,929,425 | Mixed | 17 Feb 2026 | ||
| Richard A. Gartelmann Jr. | Evp | $1,313,252 | -$41,950 | -3.1% | Mixed | 31 Mar 2026 |
| Dennis L. Klaeser | Director | $1,210,085 | Mixed | 17 Feb 2026 | ||
| Rocks Patti Temple | Director | $997,754 | Mixed | 17 Feb 2026 | ||
| John Williams Jr. | Director | $953,802 | Mixed | 17 Feb 2026 | ||
| William Kane | Director | $863,478 | Mixed | 21 Feb 2023 | ||
| William B. Skoglund | Director | $718,566 | Mixed | 25 Jul 2023 | ||
| Jill E. York | Director | $711,504 | Mixed | 17 Feb 2026 | ||
| Duane Suits | Director | $647,615 | Mixed | 15 Feb 2022 | ||
| Billy J. Lyons Jr. | Director | $618,997 | +$415 | +0.07% | Mixed | 17 Feb 2026 |
| James F. Tapscott | Director | Mixed | 21 Feb 2023 |
Top shareholders of OLD SECOND BANCORP INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
|
Company |
9.3%
|
4,155,906
|
$81,040,170 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
7.3%
|
3,278,388
|
$63,928,567 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
5%
|
2,260,874
|
$44,087,037 | — | 31 Dec 2025 | |
| FJ Capital Management LLC |
13F
13D/G
|
Company |
4.2%
from 13D/G
|
1,829,665
|
$35,678,468 | — | 31 Dec 2025 | |
| Davis Asset Management, L.P. |
13F
|
Company |
3.9%
|
1,745,523
|
$34,037,699 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
3.4%
|
1,539,419
|
$30,018,671 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
3.3%
|
1,470,185
|
$28,668,625 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
3%
|
1,365,448
|
$26,632,393 | — | 31 Dec 2025 | |
| KENNEDY CAPITAL MANAGEMENT LLC |
13F
|
Company |
2.8%
|
1,267,042
|
$24,707,319 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
2.8%
|
1,263,223
|
$24,632,849 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
2.2%
|
969,708
|
$18,909,306 | — | 31 Dec 2025 | |
| BANC FUNDS CO LLC |
13F
|
Company |
2%
|
905,190
|
$17,651,205 | — | 31 Dec 2025 | |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE |
13F
|
Company |
2%
|
891,878
|
$17,391,621 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
2%
|
881,576
|
$17,190,734 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1.9%
|
858,806
|
$16,746,719 | — | 31 Dec 2025 | |
| Boston Partners |
13F
|
Company |
1.8%
|
817,311
|
$15,993,994 | — | 31 Dec 2025 | |
| Stieven Capital Advisors, L.P. |
13F
|
Company |
1.7%
|
776,128
|
$15,134,496 | — | 31 Dec 2025 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
1.5%
|
686,032
|
$13,377,624 | — | 31 Dec 2025 | |
| James Eccher |
3/4/5
|
CHAIRMAN AND CEO, Director |
—
mixed-class rows
|
606,395
mixed-class rows
|
$12,541,162 | — | 31 Mar 2026 | |
| Keith Acker |
3/4/5
|
Director |
—
class O/S missing
|
801,689
|
$11,440,102 | — | 01 Dec 2021 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
1%
|
447,118
|
$8,718,811 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.98%
|
437,510
|
$8,531,445 | — | 31 Dec 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.95%
|
427,617
|
$8,338,532 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.93%
|
415,470
|
$8,101,665 | — | 31 Dec 2025 | |
| River Street Advisors LLC |
13F
|
Company |
0.82%
|
366,071
|
$7,138,388 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.77%
|
344,292
|
$6,713,693 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.76%
|
342,579
|
$6,680,292 | — | 31 Dec 2025 | |
| Gator Capital Management, LLC |
13F
|
Company |
0.75%
|
337,995
|
$6,590,902 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.7%
|
313,560
|
$6,114,420 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.64%
|
288,122
|
$5,618,404 | — | 31 Dec 2025 | |
| JACOBS ASSET MANAGEMENT, LLC |
13F
|
Company |
0.63%
|
281,477
|
$5,488,802 | — | 31 Dec 2025 | |
| Darin Patrick Campbell |
3/4/5
|
President, Powersports Lending, Director |
—
mixed-class rows
|
285,151
mixed-class rows
|
$5,486,288 | -$1,774,426 | 18 Feb 2026 | |
| Bradley S. Adams |
3/4/5
|
CFO & COO |
—
mixed-class rows
|
255,540
mixed-class rows
|
$5,257,976 | — | 31 Mar 2026 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
0.54%
|
243,192
|
$4,742,244 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.48%
|
216,511
|
$4,221,965 | — | 31 Dec 2025 | |
| Forum Financial Management, LP |
13F
|
Company |
0.47%
|
208,884
|
$4,073,247 | — | 31 Dec 2025 | |
| Keith Kotche |
3/4/5
|
Director |
—
mixed-class rows
|
194,979
mixed-class rows
|
$3,901,931 | — | 17 Feb 2026 | |
| John Ladowicz |
3/4/5
|
Director |
0.4%
|
181,013
|
$3,741,295 | -$599,747 | 15 Jan 2026 | |
| Edward Bonifas |
3/4/5
|
Director |
—
mixed-class rows
|
182,849
mixed-class rows
|
$3,659,573 | — | 21 Feb 2026 | |
| UBS Group AG |
13F
|
Company |
0.39%
|
177,102
|
$3,453,489 | — | 31 Dec 2025 | |
| Gary S. Collins |
3/4/5
|
VICE CHAIRMAN, Director |
—
mixed-class rows
|
162,762
mixed-class rows
|
$3,383,404 | -$429,435 | 31 Mar 2026 | |
| Hugh H. Mclean |
3/4/5
|
Director |
—
mixed-class rows
|
167,869
mixed-class rows
|
$3,360,273 | — | 17 Feb 2026 | |
| GREAT LAKES ADVISORS, LLC |
13F
|
Company |
0.37%
|
167,385
|
$3,264,007 | — | 31 Dec 2025 | |
| Siena Capital Partners GP, LLC |
13F
|
Company |
0.36%
|
163,038
|
$3,179,241 | — | 31 Dec 2025 | |
| Elizabeth Park Capital Advisors, Ltd. |
13F
|
Company |
0.35%
|
158,657
|
$3,093,812 | — | 31 Dec 2025 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
0.34%
|
154,715
|
$3,016,943 | — | 31 Dec 2025 | |
| BLAIR WILLIAM & CO/IL |
13F
|
Company |
0.34%
|
154,219
|
$3,007,267 | — | 31 Dec 2025 | |
| EJF Capital LP |
13F
|
Company |
0.33%
|
149,076
|
$2,906,982 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.32%
|
143,188
|
$2,792,169 | — | 31 Dec 2025 | |
| THRIVENT FINANCIAL FOR LUTHERANS |
13F
|
Company |
0.32%
|
143,119
|
$2,791,000 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for OLD SECOND BANCORP INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Bradley S. Adams | OSBC | Old Second Bancorp, Inc. Common Stock | Other | 0.35% | 35 | 10,159 | 31 Mar 2026 | By 401-k Plan | ||
| Gary S. Collins | OSBC | Old Second Bancorp, Inc. Common Stock | Other | 3.72% | 253 | 7,058 | 31 Mar 2026 | By 401-K | ||
| Donald Pilmer | OSBC | Old Second Bancorp, Inc. Common Stock | Other | 0.55% | 1 | 183 | 31 Mar 2026 | By Profit Sharing Plan | ||
| Donald Pilmer | OSBC | Old Second Bancorp, Inc. Common Stock | Other | 0.32% | 13 | 4,023 | 31 Mar 2026 | By 401-K Plan | ||
| James Eccher | OSBC | Old Second Bancorp, Inc. Common Stock | Other | 0.35% | 22 | 6,357 | 31 Mar 2026 | By Profit Sharing | ||
| James Eccher | OSBC | Old Second Bancorp, Inc. Common Stock | Other | 1.12% | 369 | 33,387 | 31 Mar 2026 | By 401-K | ||
| Richard A. Gartelmann Jr. | OSBC | Old Second Bancorp, Inc. Common Stock | Other | 0.34% | 43 | 12,606 | 31 Mar 2026 | By 401-K | ||
| Gary S. Collins | OSBC | Old Second Bancorp, Inc. Common Stock | Sale | -35.6% | $429,435 | $19.38 | -22,154 | 40,136 | 20 Mar 2026 | Direct |
| Bradley S. Adams | OSBC | Old Second Bancorp, Inc. Common Stock | Tax liability | -2.78% | -4,587 | 160,401 | 02 Mar 2026 | Direct | ||
| Bradley S. Adams | OSBC | Old Second Bancorp, Inc. Common Stock | Award | 10.5% | 15,657 | 164,988 | 02 Mar 2026 | Direct | ||
| Gary S. Collins | OSBC | Old Second Bancorp, Inc. Common Stock | Tax liability | -21.2% | -4,228 | 15,666 | 02 Mar 2026 | Direct | ||
| Gary S. Collins | OSBC | Old Second Bancorp, Inc. Common Stock | Award | 14,432 | 5,462 | 02 Mar 2026 | Direct | |||
| Donald Pilmer | OSBC | Old Second Bancorp, Inc. Common Stock | Tax liability | -3.59% | -2,720 | 73,054 | 02 Mar 2026 | Direct | ||
| Donald Pilmer | OSBC | Old Second Bancorp, Inc. Common Stock | Award | 16% | 9,201 | 66,573 | 02 Mar 2026 | Direct | ||
| Richard A. Gartelmann Jr. | OSBC | Old Second Bancorp, Inc. Common Stock | Tax liability | -4.94% | -1,537 | 29,551 | 02 Mar 2026 | Direct | ||
| Richard A. Gartelmann Jr. | OSBC | Old Second Bancorp, Inc. Common Stock | Award | 20.5% | 4,523 | 26,565 | 02 Mar 2026 | Direct | ||
| James Eccher | OSBC | Old Second Bancorp, Inc. Common Stock | Tax liability | -3.28% | -12,838 | 378,399 | 02 Mar 2026 | Direct | ||
| James Eccher | OSBC | Old Second Bancorp, Inc. Common Stock | Award | 12.6% | 43,818 | 391,237 | 02 Mar 2026 | Direct | ||
| Jill E. York | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| John Williams Jr. | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Rocks Patti Temple | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Hugh H. Mclean | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Billy J. Lyons Jr. | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Keith Kotche | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Dennis L. Klaeser | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Barry Finn | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Edward Bonifas | OSBC | Restricted Stock Units | Tax liability | -22.5% | -3,077 | 10,595 | 21 Feb 2026 | Direct | ||
| Gary S. Collins | OSBC | Restricted Stock Units | Tax liability | -5.76% | -2,784 | 45,558 | 21 Feb 2026 | Direct | ||
| James Eccher | OSBC | Restricted Stock Units | Tax liability | -3.4% | -7,515 | 213,290 | 21 Feb 2026 | Direct | ||
| Donald Pilmer | OSBC | Restricted Stock Units | Tax liability | -3.9% | -1,818 | 44,754 | 21 Feb 2026 | Direct | ||
| Richard A. Gartelmann Jr. | OSBC | Restricted Stock Units | Tax liability | -3.61% | -894 | 23,879 | 21 Feb 2026 | Direct | ||
| Bradley S. Adams | OSBC | Restricted Stock Units | Tax liability | -3.02% | -2,923 | 93,926 | 21 Feb 2026 | Direct | ||
| Darin Patrick Campbell | OSBC | Old Second Bancorp, Inc. Common Stock | Sale | -11.3% | $732,900 | $20.94 | -35,000 | 274,589 | 18 Feb 2026 | Direct |
| Jill E. York | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| John Williams Jr. | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Rocks Patti Temple | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Hugh H. Mclean | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Billy J. Lyons Jr. | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Keith Kotche | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Dennis L. Klaeser | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Barry Finn | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Edward Bonifas | OSBC | Restricted Stock Units | Award | 29.6% | 3,121 | 13,672 | 17 Feb 2026 | Direct | ||
| Gary S. Collins | OSBC | Restricted Stock Units | Award | 19.7% | 8,858 | 53,804 | 17 Feb 2026 | Direct | ||
| James Eccher | OSBC | Restricted Stock Units | Award | 29.3% | 54,010 | 238,328 | 17 Feb 2026 | Direct | ||
| Donald Pilmer | OSBC | Restricted Stock Units | Award | 29.2% | 11,292 | 50,010 | 17 Feb 2026 | Direct | ||
| Richard A. Gartelmann Jr. | OSBC | Restricted Stock Units | Award | 28.8% | 5,912 | 26,464 | 17 Feb 2026 | Direct | ||
| Bradley S. Adams | OSBC | Restricted Stock Units | Award | 32.8% | 25,428 | 102,872 | 17 Feb 2026 | Direct | ||
| Darin Patrick Campbell | OSBC | Restricted Stock | Award | 10,562 | 10,562 | 17 Feb 2026 | Direct | |||
| Darin Patrick Campbell | OSBC | Old Second Bancorp, Inc. Common Stock | Sale | -0.03% | $1,884 | $20.70 | -91 | 309,589 | 13 Feb 2026 | Direct |
| Billy J. Lyons Jr. | OSBC | Old Second Bancorp, Inc. Common Stock | Award | 0.14% | 23 | 16,996 | 09 Feb 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.