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OLD SECOND BANCORP INC

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Tapewire entity
2238
SEC CIK
0000357173
Parsed reports
600

Last 12 months

Inside the activity.

1 purchase rows · 20 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202501
Dec 202501
Jan 202602
Feb 202603
Mar 202601
Apr 202600
May 202615
Jun 202600
Jul 202600
Aug 202602
Sep 202605
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 30, 2026 Filed Oct 1, 2026 22:12 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
OtherOld Second Bancorp, Inc. Common Stock 30 $0.00 $0.00
Disclosure

SEC source: 0001184766-26-000024 · form4-10012026_061055.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 7,125

F1 · shares: These shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 9-30-26.

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September 30, 2026 Filed Oct 1, 2026 22:17 UTC OtherOld Second Bancorp, Inc. Common Stock 11 $0.00 $0.00
Disclosure

SEC source: 0001673321-26-000014 · form4-10012026_061055.xml · nonDerivative · entry 1

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K Plan

Disclosed balance after: 4,048

F1 · shares: These shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 9-30-26.

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September 30, 2026 Filed Oct 1, 2026 22:21 UTC OtherOld Second Bancorp, Inc. Common Stock 35 $0.00 $0.00
Disclosure

SEC source: 0001840027-26-000014 · form4-10012026_061027.xml · nonDerivative · entry 1

Gartelmann Richard A JR · CIK 0001840027 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 12,683

F1 · shares: These shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 9-30-26.

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September 30, 2026 Filed Oct 1, 2026 22:24 UTC OtherOld Second Bancorp, Inc. Common Stock 28 $0.00 $0.00
Disclosure

SEC source: 0001598917-26-000012 · form4-10012026_061007.xml · nonDerivative · entry 1

ADAMS BRADLEY S. · CIK 0001598917 · CFO & COO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-k Plan

Disclosed balance after: 10,221

F1 · shares: These shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 9-30-26.

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September 30, 2026 Filed Oct 1, 2026 22:27 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
OtherOld Second Bancorp, Inc. Common Stock 92 $0.00 $0.00
Disclosure

SEC source: 0001314109-26-000016 · form4-10012026_061036.xml · nonDerivative · entry 2

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 33,590

F2 · shares: These shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 9-30-26.

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September 30, 2026 Filed Oct 1, 2026 22:27 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
OtherOld Second Bancorp, Inc. Common Stock 17 $0.00 $0.00
Disclosure

SEC source: 0001314109-26-000016 · form4-10012026_061036.xml · nonDerivative · entry 1

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Profit Sharing

Disclosed balance after: 6,395

F1 · shares: These shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Profit Sharing Plan and Trust. Information herein was provided by the Plan Trustee as of 9-30-26.

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September 23, 2026 Filed Sep 23, 2026 22:34 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
SaleOld Second Bancorp, Inc. Common Stock 16,000 $24.69 $395,080.00
Disclosure

SEC source: 0001184766-26-000022 · form4-09232026_100935.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,136

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.575 to $24.75, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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September 08, 2026 Filed Sep 8, 2026 21:17 UTC SaleOld Second Bancorp, Inc. Common Stock 25,000 $25.63 $640,767.50
Disclosure

SEC source: 0001184764-26-000008 · form4-09082026_090934.xml · nonDerivative · entry 1

MCLEAN HUGH H · CIK 0001184764 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,351

F1 · price: The price reported is a weighted average price. The transactions were effected at prices ranging from $25.63 to $25.655, inclusive.

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September 04, 2026 Filed Sep 11, 2026 15:50 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
SaleOld Second Bancorp, Inc. Common Stock 5,000 $25.71 $128,525.00
Disclosure

SEC source: 0001184766-26-000020 · form4-09112026_030925.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Indirect · IRA

Disclosed balance after: 53,136.085

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September 03, 2026 Filed Sep 3, 2026 21:40 UTC SaleOld Second Bancorp, Inc. Common Stock 25,000 $25.73 $643,175.00
Disclosure

SEC source: 0001184764-26-000004 · form4-09032026_090921.xml · nonDerivative · entry 1

MCLEAN HUGH H · CIK 0001184764 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,351

F1 · balance_after: The reporting person moved 3,077 shares that were previously held in his account from within Old Second Bancorp, Inc., as reported on a Form 4 filing dated February 24, 2026, to his brokerage account. The total shown reflects the addition of the 3,077 shares when combined with the sale of 25,000 shares.

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September 02, 2026 Filed Sep 3, 2026 21:33 UTC
Campbell Darin PatrickDirector · President, Powersports Lending
SaleOld Second Bancorp, Inc. Common Stock 24,000 $25.53 $612,792.00
Disclosure

SEC source: 0002074132-26-000008 · form4-09032026_090942.xml · nonDerivative · entry 1

Campbell Darin Patrick · CIK 0002074132 · Director · President, Powersports Lending

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 250,589

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.50 to $25.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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August 12, 2026 Filed Aug 13, 2026 14:47 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
SaleOld Second Bancorp, Inc. Common Stock 19,313 $25.61 $494,700.56
Disclosure

SEC source: 0001314109-26-000014 · form4-08132026_020838.xml · nonDerivative · entry 1

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 303,399

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 1, 2026.

F2 · price: The price reported is a weighted average price. The transactions were effected at prices ranging from $25.48 to $25.79.

F3 · balance_after: Included in this total are 303,251 shares held at a brokerage firm in the reporting person's name and 148 shares held jointly with spouse outright.

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August 11, 2026 Filed Aug 12, 2026 20:52 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
SaleOld Second Bancorp, Inc. Common Stock 55,687 $25.46 $1,417,763.18
Disclosure

SEC source: 0001314109-26-000012 · form4-08122026_080819.xml · nonDerivative · entry 1

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 322,712

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 1, 2026.

F2 · price: The price reported is a weighted average price. The transactions were effected at prices ranging from $25.30 to $25.6050.

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August 10, 2026 Filed Aug 11, 2026 16:47 UTC GrantOld Second Bancorp, Inc. Common Stock 20 $25.38 $507.60
Disclosure

SEC source: 0001829064-26-000008 · form4-08112026_040824.xml · nonDerivative · entry 1

Lyons Billy J Jr. · CIK 0001829064 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,117

F1 · balance_after: Included in this total are 8,687 shares held with a broker and 11,430 shares held in Mr. Lyons' name outright.

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June 30, 2026 Filed Jul 2, 2026 14:29 UTC OtherOld Second Bancorp, Inc. Common Stock 34 $0.00 $0.00
Disclosure

SEC source: 0001598917-26-000010 · form4-07022026_020730.xml · nonDerivative · entry 1

ADAMS BRADLEY S. · CIK 0001598917 · CFO & COO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-k Plan

Disclosed balance after: 10,193

F1 · shares: Of this total, 34 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Salary & Savings Plan. Information herein was provided by the Plan Trustee as of 6-30-26.

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June 30, 2026 Filed Jul 2, 2026 14:22 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
OtherOld Second Bancorp, Inc. Common Stock 37 $0.00 $0.00
Disclosure

SEC source: 0001184766-26-000018 · form4-07022026_020753.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 7,095

F1 · shares: Of this total, 37 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the Plan Trustee as of 6-30-26.

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June 30, 2026 Filed Jul 2, 2026 14:15 UTC OtherOld Second Bancorp, Inc. Common Stock 14 $0.00 $0.00
Disclosure

SEC source: 0001673321-26-000012 · form4-07022026_020705.xml · nonDerivative · entry 2

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K Plan

Disclosed balance after: 4,037

F2 · shares: Of this total, 14 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Salary and Savings Plan. Information was provided herein by the Plan Trustee as of 6-30-26.

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June 30, 2026 Filed Jul 2, 2026 14:15 UTC OtherOld Second Bancorp, Inc. Common Stock 1 $0.00 $0.00
Disclosure

SEC source: 0001673321-26-000012 · form4-07022026_020705.xml · nonDerivative · entry 1

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By Profit Sharing Plan

Disclosed balance after: 184

F1 · shares: Of this total, 1 share was allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employees Profit Sharing Plan and Trust. Information herein was provided by the Plan Trustee as of 6-30-26.

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June 30, 2026 Filed Jul 2, 2026 14:06 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
OtherOld Second Bancorp, Inc. Common Stock 111 $0.00 $0.00
Disclosure

SEC source: 0001314109-26-000010 · form4-07022026_020721.xml · nonDerivative · entry 2

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 33,498

F2 · shares: Of this total, 111 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Salary and Savings Plan. Information was provided herein by the Plan Trustee as of 6-30-26.

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June 30, 2026 Filed Jul 2, 2026 14:06 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
OtherOld Second Bancorp, Inc. Common Stock 21 $0.00 $0.00
Disclosure

SEC source: 0001314109-26-000010 · form4-07022026_020721.xml · nonDerivative · entry 1

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Profit Sharing

Disclosed balance after: 6,378

F1 · shares: Of this total, 21 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employees Profit Sharing Plan and Trust. Information herein was provided by the Plan Trustee as of 6-30-26.

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June 30, 2026 Filed Jul 2, 2026 13:55 UTC OtherOld Second Bancorp, Inc. Common Stock 42 $0.00 $0.00
Disclosure

SEC source: 0001840027-26-000012 · form4-07022026_010737.xml · nonDerivative · entry 1

Gartelmann Richard A JR · CIK 0001840027 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 12,648

F1 · shares: Of this total, 42 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the Plan Trustee as of 6-30-26.

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May 22, 2026 Filed May 26, 2026 20:53 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
SaleOld Second Bancorp, Inc. Common Stock 5,120 $21.12 $108,134.40
Disclosure

SEC source: 0001184766-26-000016 · form4-05262026_080546.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Indirect · IRA

Disclosed balance after: 58,136.085

Read SEC document
May 21, 2026 Filed May 21, 2026 21:35 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
SaleOld Second Bancorp, Inc. Common Stock 10,000 $21.12 $211,200.00
Disclosure

SEC source: 0001184766-26-000014 · form4-05212026_090522.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Indirect · IRA

Disclosed balance after: 63,256.085

Read SEC document
May 11, 2026 Filed May 11, 2026 19:55 UTC SaleOld Second Bancorp, Inc. Common Stock 25,000 $20.75 $518,795.00
Disclosure

SEC source: 0001673321-26-000010 · form4-05112026_070554.xml · nonDerivative · entry 1

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,054

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May 11, 2026 Filed May 12, 2026 13:29 UTC PurchaseOld Second Bancorp, Inc. Common Stock 24 $20.90 $501.60
Disclosure

SEC source: 0001829064-26-000006 · form4-05122026_010520.xml · nonDerivative · entry 1

Lyons Billy J Jr. · CIK 0001829064 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,097

Read SEC document
May 08, 2026 Filed May 11, 2026 19:39 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
SaleOld Second Bancorp, Inc. Common Stock 5,000 $21.23 $106,125.00
Disclosure

SEC source: 0001184766-26-000012 · form4-05112026_070529.xml · nonDerivative · entry 2

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Indirect · IRA

Disclosed balance after: 73,256.085

Read SEC document
May 08, 2026 Filed May 11, 2026 19:39 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
SaleOld Second Bancorp, Inc. Common Stock 10,000 $21.24 $212,400.00
Disclosure

SEC source: 0001184766-26-000012 · form4-05112026_070529.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,136

Read SEC document
March 31, 2026 Filed Apr 2, 2026 13:13 UTC OtherOld Second Bancorp, Inc. Common Stock 35 $0.00 $0.00
Disclosure

SEC source: 0001598917-26-000008 · form4-04022026_010405.xml · nonDerivative · entry 1

ADAMS BRADLEY S. · CIK 0001598917 · CFO & COO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-k Plan

Disclosed balance after: 10,159

F1 · balance_after: Of this total, 35 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the Plan Trustee as of 3-31-26.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 13:08 UTC OtherOld Second Bancorp, Inc. Common Stock 1 $0.00 $0.00
Disclosure

SEC source: 0001673321-26-000008 · form4-04022026_010455.xml · nonDerivative · entry 2

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By Profit Sharing Plan

Disclosed balance after: 183

F2 · balance_after: Of this total, 1 share was allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Employees Profit Sharing Plan and Trust. Information herein was provided by the Plan Trustee as of 3-31-26.

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March 31, 2026 Filed Apr 2, 2026 13:08 UTC OtherOld Second Bancorp, Inc. Common Stock 13 $0.00 $0.00
Disclosure

SEC source: 0001673321-26-000008 · form4-04022026_010455.xml · nonDerivative · entry 1

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K Plan

Disclosed balance after: 4,023

F1 · balance_after: Of this total, 13 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Salary and Savings Plan. Information was provided herein by the Plan Trustee as of 3-31-26.

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March 31, 2026 Filed Apr 2, 2026 13:10 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
OtherOld Second Bancorp, Inc. Common Stock 253 $0.00 $0.00
Disclosure

SEC source: 0001184766-26-000010 · form4-04022026_010433.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 7,058

F1 · balance_after: Of this total, 253 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Salary and Savings Plan. Information was provided herein by the Plan Trustee as of 3-31-26.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 13:01 UTC OtherOld Second Bancorp, Inc. Common Stock 43 $0.00 $0.00
Disclosure

SEC source: 0001840027-26-000010 · form4-04022026_010440.xml · nonDerivative · entry 1

Gartelmann Richard A JR · CIK 0001840027 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 12,606

F1 · balance_after: Of this total, 43 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the Plan Trustee as of 3-31-26.

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March 31, 2026 Filed Apr 2, 2026 13:03 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
OtherOld Second Bancorp, Inc. Common Stock 22 $0.00 $0.00
Disclosure

SEC source: 0001314109-26-000008 · form4-04022026_010449.xml · nonDerivative · entry 2

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Profit Sharing

Disclosed balance after: 6,357

F2 · balance_after: Of this total, 22 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Employees Profit Sharing Plan and Trust. Information herein was provided by the Plan Trustee as of 3-31-26.

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March 31, 2026 Filed Apr 2, 2026 13:03 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
OtherOld Second Bancorp, Inc. Common Stock 369 $0.00 $0.00
Disclosure

SEC source: 0001314109-26-000008 · form4-04022026_010449.xml · nonDerivative · entry 1

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401-K

Disclosed balance after: 33,387

F1 · balance_after: Of this total, 369 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Salary and Savings Plan. Information was provided herein by the Plan Trustee as of 3-31-26.

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March 20, 2026 Filed Mar 23, 2026 18:02 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
SaleOld Second Bancorp, Inc. Common Stock 22,154 $19.38 $429,435.35
Disclosure

SEC source: 0001184766-26-000008 · form4-03232026_060354.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,136

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.37 to $19.40, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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March 02, 2026 Filed Mar 4, 2026 19:54 UTC Tax withholdingOld Second Bancorp, Inc. Common Stock 4,587 $19.91 $91,327.17
Disclosure

SEC source: 0001598917-26-000006 · form4-03042026_070349.xml · nonDerivative · entry 2

ADAMS BRADLEY S. · CIK 0001598917 · CFO & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,401

F2 · shares: Represents shares withheld by the issuer to satisfy applicable tax withholding obligations in connection with the vesting of 15,657 previously reported performance-based restricted stock units, the remaining shares of which were issued and added to the reporting person's common stock holdings.

F3 · balance_after: Included in this total are 75,300 shares held by the reporting person jointly with a spouse at a brokerage firm and 85,101 shares held jointly with spouse outright,

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March 02, 2026 Filed Mar 4, 2026 19:54 UTC GrantOld Second Bancorp, Inc. Common Stock 15,657 $0.00 $0.00
Disclosure

SEC source: 0001598917-26-000006 · form4-03042026_070349.xml · nonDerivative · entry 1

ADAMS BRADLEY S. · CIK 0001598917 · CFO & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 164,988

F1 · shares: Shares delivered to the reporting person pursuant to vesting of performance-based restricted stock units granted under the Old Second Bancorp, Inc. 2019 Equity Incentive Plan, as Amended and Restated and vested upon achievement of performance goals for the applicable performance period. The reporting person reported an acquisition of 8,946 on Form 4 filed February 21, 2023, which represented the number of shares that would be delivered if target performance was achieved during the performance period. Actual performance exceeded the target performance for the performance period which resulted in an additional grant of 6,711 shares.

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March 02, 2026 Filed Mar 4, 2026 19:51 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
Tax withholdingOld Second Bancorp, Inc. Common Stock 4,228 $19.91 $84,179.48
Disclosure

SEC source: 0001184766-26-000006 · form4-03042026_070328.xml · nonDerivative · entry 2

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,666

F2 · shares: Represents shares withheld by the issuer to satisfy applicable tax withholding obligations in connection with the vesting of 14,432 previously reported performance-based restricted stock units, the remaining shares of which were issued and added to the reporting person's common stock holdings.

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March 02, 2026 Filed Mar 4, 2026 19:51 UTC
COLLINS GARY SDirector · VICE CHAIRMAN
GrantOld Second Bancorp, Inc. Common Stock 14,432 $0.00 $0.00
Disclosure

SEC source: 0001184766-26-000006 · form4-03042026_070328.xml · nonDerivative · entry 1

COLLINS GARY S · CIK 0001184766 · Director · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,462

F1 · shares: Shares delivered to the reporting person pursuant to vesting of performance-based restricted stock units granted under the Old Second Bancorp, Inc. 2019 Equity Incentive Plan, as Amended and Restated and vested upon achievement of performance goals for the applicable performance period. The reporting person reported an acquisition of 8,246 on Form 4 filed February 21, 2023, which represented the number of shares that would be delivered if target performance was achieved during the performance period. Actual performance exceeded the target performance for the performance period which resulted in an additional grant of 6,186 shares.

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March 02, 2026 Filed Mar 4, 2026 19:46 UTC Tax withholdingOld Second Bancorp, Inc. Common Stock 1,537 $19.91 $30,601.67
Disclosure

SEC source: 0001840027-26-000008 · form4-03042026_070322.xml · nonDerivative · entry 2

Gartelmann Richard A JR · CIK 0001840027 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,551

F2 · shares: Represents shares withheld by the issuer to satisfy applicable tax withholding obligations in connection with the vesting of 4,523 previously reported performance-based restricted stock units, the remaining shares of which were issued and added to the reporting person's common stock holdings.

F3 · balance_after: Included in this total are 4,677 shares held outright in the reporting person's name and 24,874 shares held with a brokerage firm.

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March 02, 2026 Filed Mar 4, 2026 19:46 UTC GrantOld Second Bancorp, Inc. Common Stock 4,523 $0.00 $0.00
Disclosure

SEC source: 0001840027-26-000008 · form4-03042026_070322.xml · nonDerivative · entry 1

Gartelmann Richard A JR · CIK 0001840027 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,565

F1 · shares: Shares delivered to the reporting person pursuant to vesting of performance-based restricted stock units granted under the Old Second Bancorp, Inc. 2019 Equity Incentive Plan, as Amended and Restated and vested upon achievement of performance goals for the applicable performance period. The reporting person reported an acquisition of 2,585 on Form 4 filed February 21, 2023, which represented the number of shares that would be delivered if target performance was achieved during the performance period. Actual performance exceeded the target performance for the performance period which resulted in an additional grant of 1,938 shares.

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March 02, 2026 Filed Mar 4, 2026 19:48 UTC Tax withholdingOld Second Bancorp, Inc. Common Stock 2,720 $19.91 $54,155.20
Disclosure

SEC source: 0001673321-26-000006 · form4-03042026_070350.xml · nonDerivative · entry 2

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,054

F2 · shares: Represents shares withheld by the issuer to satisfy applicable tax withholding obligations in connection with the vesting of 9,201 previously reported performance-based restricted stock units, the remaining shares of which were issued and added to the reporting person's common stock holdings.

F3 · balance_after: Included in this total are 9,919 shares in the reporting person's name outright and 63,135 shares held in the reporting person's name in a brokerage account.

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March 02, 2026 Filed Mar 4, 2026 19:48 UTC GrantOld Second Bancorp, Inc. Common Stock 9,201 $0.00 $0.00
Disclosure

SEC source: 0001673321-26-000006 · form4-03042026_070350.xml · nonDerivative · entry 1

Pilmer Donald · CIK 0001673321 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,573

F1 · shares: Shares delivered to the reporting person pursuant to vesting of performance-based restricted stock units granted under the Old Second Bancorp, Inc. 2019 Equity Incentive Plan, as Amended and Restated and vested upon achievement of performance goals for the applicable performance period. The reporting person reported an acquisition of 5,256 on Form 4 filed February 21, 2023, which represented the number of shares that would be delivered if target performance was achieved during the performance period. Actual performance exceeded the target performance for the performance period which resulted in an additional grant of 3,945 shares.

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March 02, 2026 Filed Mar 4, 2026 19:38 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
Tax withholdingOld Second Bancorp, Inc. Common Stock 12,838 $19.91 $255,604.58
Disclosure

SEC source: 0001314109-26-000006 · form4-03042026_070329.xml · nonDerivative · entry 2

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 378,399

F2 · shares: Represents shares withheld by the issuer to satisfy applicable tax withholding obligations in connection with the vesting of 43,818 previously reported performance-based restricted stock units, the remaining shares of which were issued and added to the reporting person's common stock holdings.

F3 · balance_after: Included in this total are 30,980 shares held in the reporting person's name outright; 347,271 shares held with a brokerage firm and 148 shares held jointly with spouse.

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March 02, 2026 Filed Mar 4, 2026 19:38 UTC
Eccher JamesDirector · CHAIRMAN AND CEO
GrantOld Second Bancorp, Inc. Common Stock 43,818 $0.00 $0.00
Disclosure

SEC source: 0001314109-26-000006 · form4-03042026_070329.xml · nonDerivative · entry 1

Eccher James · CIK 0001314109 · Director · CHAIRMAN AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 391,237

F1 · shares: Shares delivered to the reporting person pursuant to vesting of performance-based restricted stock units granted under the Old Second Bancorp, Inc. 2019 Equity Incentive Plan, as Amended and Restated and vested upon achievement of performance goals for the applicable performance period. The reporting person reported an acquisition of 25,038 on Form 4 filed February 21, 2023, which represented the number of shares that would be delivered if target performance was achieved during the performance period. Actual performance exceeded the target performance for the performance period which resulted in an additional grant of 18,780 shares.

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February 21, 2026 Filed Feb 25, 2026 00:39 UTC
YORK JILL EDirector
Tax withholdingRestricted Stock Units 3,077 $20.57 $63,293.89
Disclosure

SEC source: 0001244438-26-000002 · form4-02252026_120205.xml · nonDerivative · entry 2

YORK JILL E · CIK 0001244438 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,595

F2 · shares: Represents shares vested upon the third anniversary of the date of grant previously reported and are now issued and added to the reporting person's common stock holdings outright.

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February 21, 2026 Filed Feb 25, 2026 00:34 UTC Tax withholdingRestricted Stock Units 3,077 $20.57 $63,293.89
Disclosure

SEC source: 0001895832-26-000002 · form4-02252026_120232.xml · nonDerivative · entry 2

Williams John JR · CIK 0001895832 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,595

F2 · shares: Represents shares vested upon the third anniversary of the date of grant previously reported and are now issued and added to the reporting person's common stock holdings outright.

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February 21, 2026 Filed Feb 25, 2026 00:24 UTC Tax withholdingRestricted Stock Units 3,077 $20.57 $63,293.89
Disclosure

SEC source: 0001184764-26-000002 · form4-02252026_120252.xml · nonDerivative · entry 2

MCLEAN HUGH H · CIK 0001184764 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,595

F2 · shares: Represents shares vested upon the third anniversary of the date of grant previously reported and are now issued and added to the reporting person's common stock holdings outright.

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February 21, 2026 Filed Feb 25, 2026 00:29 UTC Tax withholdingRestricted Stock Units 3,077 $20.57 $63,293.89
Disclosure

SEC source: 0001655300-26-000002 · form4-02252026_120210.xml · nonDerivative · entry 2

Temple Rocks Patti · CIK 0001655300 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,595

F2 · shares: Represents shares vested upon the third anniversary of the date of grant previously reported and are now issued and added to the reporting person's common stock holdings outright.

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February 21, 2026 Filed Feb 25, 2026 00:19 UTC Tax withholdingRestricted Stock Units 3,077 $20.57 $63,293.89
Disclosure

SEC source: 0001829064-26-000004 · form4-02252026_120201.xml · nonDerivative · entry 2

Lyons Billy J Jr. · CIK 0001829064 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,595

F2 · shares: Represents shares vested upon the third anniversary of the date of grant previously reported and are now issued and added to the reporting person's common stock holdings outright.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.