Old Second Bancorp Inc (OSBC) shareholders
OSBCNasdaqState Commercial BanksFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 4, 2026Score 15/3011% above fair value
$25.10−0.01 (-0.04%)
Close on Nov 13, 2026Market cap $1.28BP/E 11.8Yield 1.00%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
76.3%
39M of 51M shares
Institutional holders
184
20 new, 20 sold out
Net institutional buying
1M
In Q2 2026
Insider trades, 12 months
2 buys · 20 sales
Net sold $7.29M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 3,503,897 | 7.80% | 13G (passive) amendment | Dec 31, 2023 |
| Dimensional Fund Advisors LP | 2,575,752 | 5.10% | 13G (passive) | Sep 30, 2026 |
| Vanguard Capital Management | 2,562,549 | 5.03% | 13G (passive) | Sep 30, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of OSBC | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,298,683 | 8.45% | $100.25M | +172,439 | 0.00% |
| Dimensional Fund Advisors LP | 2,498,671 | 4.91% | $58.27M | +109,809 | 0.01% |
| Vanguard Capital Management LLC | 2,179,877 | 4.28% | $50.83M | −71,972 | 0.00% |
| State Street Corp | 1,839,202 | 3.62% | $42.89M | +239,900 | 0.00% |
| Davis Asset Management, L.P. | 1,800,000 | 3.54% | $41.98M | – | 1.06% |
| American Century Companies Inc | 1,783,820 | 3.51% | $41.60M | +192,877 | 0.02% |
| Goldman Sachs Group Inc | 1,624,852 | 3.19% | $37.89M | −66,671 | 0.00% |
| FJ Capital Management LLC | 1,460,413 | 2.87% | $34.06M | −44,689 | 4.42% |
| Boston Partners | 1,415,165 | 2.78% | $32.92M | −28,724 | 0.03% |
| Geode Capital Management, LLC | 1,349,432 | 2.65% | $31.47M | +67,421 | 0.00% |
| Kennedy Capital Management LLC | 1,236,983 | 2.43% | $28.85M | −31,507 | 0.51% |
| Banc Funds Co LLC | 1,034,143 | 2.03% | $24.12M | +5,000 | 3.98% |
| Manufacturers Life Insurance Company, The | 872,651 | 1.72% | $20.35M | −6,019 | 0.02% |
| Vanguard Portfolio Management LLC | 819,368 | 1.61% | $19.11M | +106,935 | 0.00% |
| Stieven Capital Advisors, L.P. | 815,328 | 1.60% | $19.01M | +41,800 | 3.63% |
| River Street Advisors LLC | 779,008 | 1.53% | $18.17M | +32,348 | 5.35% |
| Alliancebernstein L.P. | 641,845 | 1.26% | $12.94M | −49,000 | 0.00% |
| JPMorgan Chase & Co | 555,602 | 1.09% | $12.90M | −145,351 | 0.00% |
| Northern Trust Corp | 555,408 | 1.09% | $12.95M | −208,933 | 0.00% |
| Wellington Management Group Llp | 544,345 | 1.07% | $12.69M | −313,440 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 184 | 39M | 76.3% | 20 / 78 | 46 / 20 | 3M | 2M |
| Q1 2026 | 188 | 38M | 74.3% | 25 / 58 | 66 / 17 | 6M | 3M |
| Q4 2025 | 185 | 37M | 73.2% | 22 / 77 | 60 / 30 | 4M | 4M |
| Q3 2025 | 197 | 37M | 72.5% | 32 / 85 | 49 / 16 | 5M | 1M |
| Q2 2025 | 183 | 33M | 64.3% | 15 / 73 | 66 / 24 | 2M | 2M |
| Q1 2025 | 192 | 33M | 64.6% | 24 / 59 | 70 / 9 | 4M | 3M |
| Q4 2024 | 180 | 32M | 63.4% | 27 / 76 | 44 / 21 | 3M | 4M |
| Q3 2024 | 175 | 33M | 64.6% | 34 / 66 | 49 / 11 | 8M | 3M |
| Q2 2024 | 153 | 32M | 62.6% | 23 / 61 | 43 / 18 | 3M | 3M |
| Q1 2024 | 151 | 32M | 62.2% | 17 / 56 | 52 / 25 | 2M | 2M |
| Q4 2023 | 160 | 32M | 62.5% | 27 / 60 | 41 / 10 | 4M | 2M |
| Q3 2023 | 145 | 30M | 58.8% | 19 / 53 | 40 / 7 | 2M | 1M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
219 funds held OSBC in Q2 2026, 44% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of OSBC | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 1,535,474 | 3.02% | $35.81M | 0.00% | Jun 30, 2026 |
| Avantis U.S. Small Cap Value ETF | 1,424,241 | 2.80% | $30.36M | 0.11% | May 31, 2026 |
| iShares Russell 2000 ETF | 1,324,596 | 2.60% | $30.89M | 0.04% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 593,411 | 1.17% | $13.84M | 0.01% | Jun 30, 2026 |
| State Street(R) SPDR(R) S&P(R) Regional Banking ETF | 570,885 | 1.12% | $13.31M | 0.28% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 549,405 | 1.08% | $13.89M | 0.04% | Jul 31, 2026 |
| iShares Russell 2000 Value ETF | 467,688 | 0.92% | $10.91M | 0.08% | Jun 30, 2026 |
| Regional Bank Fund | 450,953 | 0.89% | $11.40M | 1.19% | Jul 31, 2026 |
| Goldman Sachs Small Cap Value Fund | 416,551 | 0.82% | $8.88M | 0.94% | May 31, 2026 |
| Vanguard Strategic Small-Cap Equity Fund | 367,820 | 0.72% | $8.58M | 0.27% | Jun 30, 2026 |
| U.S. Small Cap Value Portfolio | 366,649 | 0.72% | $9.27M | 0.05% | Jul 31, 2026 |
| Boston Partners Small Cap Value Fund II | 324,461 | 0.64% | $6.92M | 0.85% | May 31, 2026 |
| U.S. Targeted Value Portfolio | 312,302 | 0.61% | $7.90M | 0.05% | Jul 31, 2026 |
| Dimensional U.S. Targeted Value ETF | 281,794 | 0.55% | $7.13M | 0.05% | Jul 31, 2026 |
| Fidelity Extended Market Index Fund | 274,237 | 0.54% | $5.85M | 0.01% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Gary S. Collins | VICE CHAIRMAN, Director | 97,573 | 0.19% | Oct 1, 2026 |
| James Eccher | CHAIRMAN AND CEO, Director | 228,237 | 0.45% | Oct 1, 2026 |
| Darin Patrick Campbell | President, Powersports Lending, Director | 250,589 | 0.49% | Sep 3, 2026 |
| Richard A. Gartelmann JR | EVP | 33,977 | 0.07% | Oct 1, 2026 |
| Donald Pilmer | EVP | 45,180 | 0.09% | Oct 1, 2026 |
| Bradley S. Adams | CFO & COO | 95,201 | 0.19% | Oct 1, 2026 |
| Billy J. Lyons Jr. | Director | 20,140 | 0.04% | Nov 10, 2026 |
| John Williams JR | Director | 46,955 | 0.09% | Oct 21, 2026 |
| Jill E. York | Director | 18,507 | 0.04% | Oct 21, 2026 |
| Hugh H. McLean | Director | 285,351 | 0.56% | Oct 20, 2026 |
| Barry Finn | Director | 88,737 | 0.17% | Oct 20, 2026 |
| Rocks Patti Temple | Director | 39,030 | 0.08% | Oct 20, 2026 |
| Edward Bonifas | Director | 175,331 | 0.34% | Oct 20, 2026 |
| Dennis L. Klaeser | Director | 49,657 | 0.10% | Oct 20, 2026 |
| Keith Kotche | Director | 187,461 | 0.37% | Oct 20, 2026 |
| John Ladowicz | Director | 182,878 | 0.36% | Jan 16, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Billy J. Lyons Jr. Director | Nov 9, 2026 | Buy | +23 | $24.88 | $572 | 20,140 |
| Richard A. Gartelmann JR EVP | Sep 30, 2026 | Other | +35 | – | – | 12,683 |
| Donald Pilmer EVP | Sep 30, 2026 | Other | +11 | – | – | 4,048 |
| Bradley S. Adams CFO & COO | Sep 30, 2026 | Other | +28 | – | – | 10,221 |
| James Eccher CHAIRMAN AND CEO, Director | Sep 30, 2026 | Other | +92 | – | – | 33,590 |
| James Eccher CHAIRMAN AND CEO, Director | Sep 30, 2026 | Other | +17 | – | – | 6,395 |
| Gary S. Collins VICE CHAIRMAN, Director | Sep 30, 2026 | Other | +30 | – | – | 7,125 |
| Gary S. Collins VICE CHAIRMAN, Director | Sep 23, 2026 | Sale | −16,000 | $24.69 | $395.04K | 14,136 |
| Hugh H. McLean Director | Sep 8, 2026 | Sale | −25,000 | $25.63 | $640.75K | 135,351 |
| Gary S. Collins VICE CHAIRMAN, Director | Sep 4, 2026 | Sale | −5,000 | $25.71 | $128.55K | 53,136 |
| Hugh H. McLean Director | Sep 3, 2026 | Sale | −25,000 | $25.73 | $643.25K | 135,351 |
| Darin Patrick Campbell President, Powersports Lending, Director | Sep 2, 2026 | Sale | −24,000 | $25.53 | $612.72K | 250,589 |
| James Eccher CHAIRMAN AND CEO, Director | Aug 12, 2026 | Sale(10b5-1 plan) | −19,313 | $25.61 | $494.61K | 303,399 |
| James Eccher CHAIRMAN AND CEO, Director | Aug 11, 2026 | Sale(10b5-1 plan) | −55,687 | $25.46 | $1.42M | 322,712 |
| Jill E. York Director | Aug 10, 2026 | Small purchase | +11.88 | $25.38 | $302 | 4,320 |
| Billy J. Lyons Jr. Director | Aug 10, 2026 | Award | +20 | $25.38 | $508 | 20,117 |
| James Eccher CHAIRMAN AND CEO, Director | Jun 30, 2026 | Other | +21 | – | – | 6,378 |
| James Eccher CHAIRMAN AND CEO, Director | Jun 30, 2026 | Other | +111 | – | – | 33,498 |
| Gary S. Collins VICE CHAIRMAN, Director | Jun 30, 2026 | Other | +37 | – | – | 7,095 |
| Richard A. Gartelmann JR EVP | Jun 30, 2026 | Other | +42 | – | – | 12,648 |
| Bradley S. Adams CFO & COO | Jun 30, 2026 | Other | +34 | – | – | 10,193 |
| Donald Pilmer EVP | Jun 30, 2026 | Other | +14 | – | – | 4,037 |
| Donald Pilmer EVP | Jun 30, 2026 | Other | +1 | – | – | 184 |
| Gary S. Collins VICE CHAIRMAN, Director | May 22, 2026 | Sale | −5,120 | $21.12 | $108.13K | 58,136 |
| Gary S. Collins VICE CHAIRMAN, Director | May 21, 2026 | Sale | −10,000 | $21.12 | $211.20K | 63,256 |
| Jill E. York Director | May 11, 2026 | Small purchase | +14.377 | $20.90 | $300 | 4,320 |
| Billy J. Lyons Jr. Director | May 11, 2026 | Buy | +24 | $20.90 | $502 | 20,097 |
| Donald Pilmer EVP | May 11, 2026 | Sale | −25,000 | $20.75 | $518.75K | 48,054 |
| Gary S. Collins VICE CHAIRMAN, Director | May 8, 2026 | Sale | −10,000 | $21.24 | $212.40K | 30,136 |
| Gary S. Collins VICE CHAIRMAN, Director | May 8, 2026 | Sale | −5,000 | $21.23 | $106.15K | 73,256 |
| James Eccher CHAIRMAN AND CEO, Director | Mar 31, 2026 | Other | +22 | – | – | 6,357 |
| James Eccher CHAIRMAN AND CEO, Director | Mar 31, 2026 | Other | +369 | – | – | 33,387 |
| Richard A. Gartelmann JR EVP | Mar 31, 2026 | Other | +43 | – | – | 12,606 |
| Bradley S. Adams CFO & COO | Mar 31, 2026 | Other | +35 | – | – | 10,159 |
| Gary S. Collins VICE CHAIRMAN, Director | Mar 31, 2026 | Other | +253 | – | – | 7,058 |
| Donald Pilmer EVP | Mar 31, 2026 | Other | +1 | – | – | 183 |
| Donald Pilmer EVP | Mar 31, 2026 | Other | +13 | – | – | 4,023 |
| Gary S. Collins VICE CHAIRMAN, Director | Mar 20, 2026 | Sale | −22,154 | $19.38 | $429.34K | 40,136 |
| Bradley S. Adams CFO & COO | Mar 2, 2026 | Award | +15,657 | – | – | 164,988 |
| Bradley S. Adams CFO & COO | Mar 2, 2026 | Tax withholding | −4,587 | $19.91 | $91.33K | 160,401 |
| James Eccher CHAIRMAN AND CEO, Director | Mar 2, 2026 | Tax withholding | −12,838 | $19.91 | $255.60K | 378,399 |
| James Eccher CHAIRMAN AND CEO, Director | Mar 2, 2026 | Award | +43,818 | – | – | 391,237 |
| Richard A. Gartelmann JR EVP | Mar 2, 2026 | Tax withholding | −1,537 | $19.91 | $30.60K | 29,551 |
| Richard A. Gartelmann JR EVP | Mar 2, 2026 | Award | +4,523 | – | – | 26,565 |
| Donald Pilmer EVP | Mar 2, 2026 | Award | +9,201 | – | – | 66,573 |
| Donald Pilmer EVP | Mar 2, 2026 | Tax withholding | −2,720 | $19.91 | $54.16K | 73,054 |
| Gary S. Collins VICE CHAIRMAN, Director | Mar 2, 2026 | Award | +14,432 | – | – | 5,462 |
| Gary S. Collins VICE CHAIRMAN, Director | Mar 2, 2026 | Tax withholding | −4,228 | $19.91 | $84.18K | 15,666 |
| John Williams JR Director | Feb 21, 2026 | Other | +3,077 | – | – | 36,830 |
| John Williams JR Director | Feb 21, 2026 | Other | −3,077 | – | – | 10,595 |
| Jill E. York Director | Feb 21, 2026 | Other | +3,077 | – | – | 3,077 |
| Jill E. York Director | Feb 21, 2026 | Other | −3,077 | – | – | 10,595 |
| Keith Kotche Director | Feb 21, 2026 | Other | +3,077 | – | – | 187,461 |
| Keith Kotche Director | Feb 21, 2026 | Other | −3,077 | – | – | 10,595 |
| Billy J. Lyons Jr. Director | Feb 21, 2026 | Other | +3,077 | – | – | 20,073 |
| Billy J. Lyons Jr. Director | Feb 21, 2026 | Other | −3,077 | – | – | 10,595 |
| Rocks Patti Temple Director | Feb 21, 2026 | Other | +3,077 | – | – | 20,351 |
| Rocks Patti Temple Director | Feb 21, 2026 | Other | −3,077 | – | – | 10,595 |
| Barry Finn Director | Feb 21, 2026 | Other | +3,077 | – | – | 88,737 |
| Barry Finn Director | Feb 21, 2026 | Other | −3,077 | – | – | 10,595 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
6.50%
3M shares short
Days to cover
5.2
At 1M shares a day
Change since last report
+4.9%
From 3M shares
Short volume, 20 days
51.4%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Old Second Bancorp's stock actually held short. Settlement fails (shares not delivered on time) peaked at 24,252 shares on Oct 9, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Gary S. Collins Officer | Sep 23, 2026 | 20,000 | $493.00K | Sep 23, 2026 | Restricted Stock Units |
| Hugh H. McLean Director | Sep 8, 2026 | 25,000 | $641.91K | Sep 8, 2026 | Qualifying Director Owned Shares Open Market Purchase |
| Darin Patrick Campbell Director | Sep 2, 2026 | 24,000 | $615.36K | Sep 2, 2026 | Corporate Action |
| James Eccher Officer, Director | Aug 11, 2026 | 75,000 | $1.90M | Aug 11, 2026 | RSU'S ACQUIRED BETWEEN: 03/13/18 - 3/4/25 |
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