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Old Second Bancorp Inc Form 4 Filings

OSBC NASDAQ

Every Form 4 that Old Second Bancorp Inc (OSBC) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.

A Form 4 covers the transactions officers, directors and large holders report, so if you follow OSBC and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full OSBC filings page.

Rhea-AI Summary

James Eccher reported acquisition or exercise transactions in this Form 4 filing. Old Second Bancorp Inc. Chairman and CEO James Eccher reported 17 shares allocated during the third quarter pursuant to the Profit Sharing Plan and Trust and 92 shares pursuant to the Employee Savings Plan & Trust. The plan trustees provided information as of September 30, 2026. Reported post-allocation positions were 6,395 shares through Profit Sharing and 33,590 shares through the 401-K. Eccher also reported 303,399 directly held common shares, including 148 held jointly with his spouse and 303,251 in a brokerage account, plus 188,252 restricted stock units.

Rhea-AI Summary

Old Second Bancorp Inc. CFO & COO Bradley S. Adams reported an acquisition of 28 common shares on September 30, 2026. The shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust and held indirectly through the 401-k Plan; the reported post-transaction position in that plan was 10,221 shares. Adams also reported 160,401 directly held common shares, including 75,300 held jointly with his spouse with a broker and 85,101 held jointly with his spouse outright, plus 84,980 restricted stock units.

Rhea-AI Summary

Old Second Bancorp Inc. EVP Richard A. Gartelmann Jr. reported an acquisition of 35 common shares allocated during the third quarter to a 401-K under the Old Second Bancorp, Inc. Employee Savings Plan & Trust. The Plan Trustee provided the information as of September 30, 2026. His reported holdings after the transaction included 12,683 common shares through the 401-K, 29,551 directly held common shares and 21,294 restricted stock units.

Rhea-AI Summary

Old Second Bancorp Inc. (OSBC) EVP Donald Pilmer reported an acquisition of 11 common shares allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. The 401-K Plan held 4,048 shares following the transaction. Other reported positions as of September 30, 2026 included 184 shares by the Profit Sharing Plan, 1,450 shares in his spouse’s IRA, where Pilmer is listed as a beneficiary, 48,054 directly held common shares, and 39,498 restricted stock units.

Rhea-AI Summary

Old Second Bancorp Inc. vice chairman and director Gary S. Collins acquired 30 common shares allocated during the third quarter under the Old Second Bancorp, Inc. Employee Savings Plan & Trust. After the allocation, 7,125 shares were held indirectly through his 401(k). As of September 30, 2026, his reported holdings also included 14,136 common shares directly, 53,136 shares through an IRA, and 37,312 restricted stock units directly.

Rhea-AI Summary

At Old Second Bancorp Inc. (OSBC), Vice Chairman and director Gary S. Collins reported selling 16,000 common shares on September 23, 2026, at a weighted-average price of $24.6925 per share; reported sale prices ranged from $24.575 to $24.75. His reported holdings afterward included 14,136 directly held common shares, 7,095 shares through a 401-K, 53,136 shares through IRAs, and 37,312 restricted stock units. No Rule 10b5-1 plan is reported.

Rhea-AI Summary

OLD SECOND BANCORP INC (OSBC) director and vice chairman Gary S. Collins reported selling 5,000 shares of Old Second Bancorp, Inc. common stock on September 4, 2026 at $25.705 per share in an open-market or private transaction through an indirect IRA account. Following this sale, he indirectly holds 53,136.085 shares in the IRA and 7,095 shares through a 401-K plan, and directly holds 37,312 Restricted Stock Units; no Rule 10b5-1 trading plan is reported.

Rhea-AI Summary

OLD SECOND BANCORP INC (OSBC) director Hugh H. McLean reported selling 25,000 shares of Old Second Bancorp, Inc. Common Stock on September 8, 2026, in an open-market transaction at a weighted average price of $25.6307 per share. Following this sale, he directly holds 135,351 shares.

Rhea-AI Summary

OLD SECOND BANCORP INC (OSBC) director Hugh H. McLean filed an amended insider report that removes a previously reported sale of 25,000 shares of Old Second Bancorp common stock. The broker reversed the sale on September 4, 2026 through its broker error account after determining that it had not timely filed the required Form 144, and McLean did not receive any proceeds.

The amendment deletes the prior sale entry and now reflects corrected holdings of 160,351 shares of Old Second Bancorp common stock and 10,595 Restricted Stock Units held directly. No transactions under a Rule 10b5-1 trading plan are reported.

Rhea-AI Summary

OLD SECOND BANCORP INC (OSBC) director Hugh H. McLean reported selling 25,000 shares of Old Second Bancorp, Inc. common stock on September 3, 2026, at $25.727 per share in an open-market or private transaction. After this activity and an internal transfer of 3,077 shares to his brokerage account, he directly holds 135,351 common shares and 10,595 Restricted Stock Units.

Rhea-AI Summary

OLD SECOND BANCORP INC (OSBC) director and officer Darin Patrick Campbell reported selling 24,000 shares of Old Second Bancorp, Inc. common stock on September 2, 2026 in an open-market or private sale at a weighted average price of $25.533 per share, with individual sale prices ranging from $25.50 to $25.60. After this sale, he directly held 250,589 shares of common stock and 10,562 shares of restricted stock. No Rule 10b5-1 trading plan is reported for this sale.

Rhea-AI Summary

Old Second Bancorp, Inc. director and Chairman/CEO James Eccher reported a sale of 19,313 shares of common stock on August 12, 2026 in an open-market transaction under a Rule 10b5-1 trading plan adopted on May 1, 2026. The weighted average sale price was $25.6149 per share, with individual trades between $25.48 and $25.79. Following this sale, Eccher directly holds 303,399 shares, including 303,251 shares in a brokerage account and 148 shares held jointly with his spouse.

Rhea-AI Summary

Old Second Bancorp, Inc. Chairman and CEO James Eccher reported selling 55,687 shares of common stock on August 11, 2026 at a weighted average price of $25.4595 per share, with trades ranging from $25.30 to $25.6050. The sales were effected under a Rule 10b5-1 trading plan adopted on May 1, 2026. Following the sale, he reported 322,712 directly held shares, additional indirect holdings of 33,498 shares via a 401(k) and 6,378 via a profit-sharing plan, and 188,252 Restricted Stock Units.

Rhea-AI Summary

OLD SECOND BANCORP INC director Billy J. Lyons Jr. reported an acquisition of 20 shares of Old Second Bancorp, Inc. common stock on 2026-08-10 as a grant or award at $25.38 per share, bringing his direct common stock holdings to 20,117 shares. A footnote states this total includes 8,687 shares held with a broker and 11,430 shares held in his name outright. He also reports a direct holding of 10,595 Restricted Stock Units, which are tracked separately from the common shares.

Rhea-AI Summary

OLD SECOND BANCORP INC executive Bradley S. Adams, the CFO and COO, reported updated share holdings on a Form 4. The filing shows a small 34-share transaction coded “J,” described as an other acquisition or disposition, allocated during the second quarter under the Old Second Bancorp, Inc. Salary & Savings Plan and reported by the plan trustee as of June 30, 2026.

After this plan-related activity, Adams directly holds 84,980 Restricted Stock Units and 160,401 shares of Old Second Bancorp common stock. Footnotes state this common stock figure includes 75,300 shares held jointly with his spouse through a broker and 85,101 shares held jointly with his spouse outright. In addition, he indirectly holds 10,193 shares through the 401-k Salary & Savings Plan. The transactions are routine reporting and do not reflect any open-market buying or selling.

Rhea-AI Summary

OLD SECOND BANCORP INC vice chairman Gary S. Collins filed an update to his share holdings, highlighting routine plan-related activity. The filing shows 37 Old Second Bancorp, Inc. common shares were allocated to his 401(k) during the second quarter under the company’s Employee Salary and Savings Plan, bringing that indirect 401(k) position to 7,095 shares as of June 30, 2026. Collins also reports 30,136 common shares held directly in a brokerage account and 58,136.085 common shares held indirectly through IRAs, along with 37,312 restricted stock units.

Rhea-AI Summary

OLD SECOND BANCORP INC executive Donald Pilmer reported updated share holdings, including small benefit-plan allocations. As of the reported date, he held 39,498 Restricted Stock Units directly and 48,054 shares of Old Second Bancorp common stock in a brokerage account in his name. Indirect holdings included 1,450 shares in a spouse’s IRA, 4,037 shares through a 401(k) salary and savings plan, and 184 shares through an employees profit sharing plan, with 14 and 1 shares respectively allocated during the second quarter at no stated price. These changes reflect routine plan-related adjustments rather than open-market trading.

Rhea-AI Summary

OLD SECOND BANCORP INC Chairman and CEO James Eccher reported updated holdings of company stock and equity awards. The filing shows 188,252 Restricted Stock Units held directly and 378,399 shares of Old Second Bancorp common stock held directly, including shares in a brokerage account and shares held jointly with his spouse.

In addition, plan-related activity allocated 111 shares during the second quarter under the company’s Salary and Savings Plan and 21 shares under the Employees Profit Sharing Plan, leaving indirect holdings of 33,498 shares and 6,378 shares, respectively, as of June 30, 2026. These are reported as "other" transactions rather than open-market buys or sells.

Rhea-AI Summary

OLD SECOND BANCORP INC executive Richard A. Gartelmann Jr., an EVP, reported updated holdings and a small plan-related allocation of company stock. A Form 4 entry shows 42 shares of Old Second Bancorp, Inc. common stock were allocated during the second quarter under the company’s Employee Salary and Savings Plan, based on information from the plan trustee as of June 30, 2026.

Following these updates, he directly holds 21,294 Restricted Stock Units and 29,551 shares of common stock, and indirectly holds 12,648 shares of common stock through a 401(k) plan. The filing reflects compensation and retirement-plan activity rather than open-market trading.

Rhea-AI Summary

OLD SECOND BANCORP INC director and vice chairman Gary S. Collins reported an open-market sale of 5,120 shares of Old Second Bancorp, Inc. common stock at $21.12 per share from an IRA account. The transaction is classified as an indirect sale because the shares are held in an IRA.

After this sale, the filing shows Collins indirectly holding 58,136.085 Old Second Bancorp, Inc. common shares in the IRA, 7,058 common shares through a 401‑K plan, and directly holding 30,136 common shares. He also directly holds 37,312 Restricted Stock Units, which represent additional equity-based compensation.

Rhea-AI Summary

Old Second Bancorp Inc. vice chairman and director Gary S. Collins reported an open-market sale of 10,000 shares of Old Second Bancorp common stock at $21.12 per share through an IRA. After this transaction, the IRA holds 63,256.085 shares.

The filing also shows Collins with 30,136 shares of common stock held directly, 7,058 shares held indirectly through a 401-K, and 37,312 restricted stock units as of the reported date. These additional lines reflect reported holdings rather than new purchases or sales.

Rhea-AI Summary

Old Second Bancorp Inc. director Billy J. Lyons Jr. reported a small open-market purchase of company stock. He bought 24 shares of Old Second Bancorp, Inc. common stock at a price of $20.90 per share, bringing his direct common stock holdings to 20,097 shares. He also reports holding 10,595 Restricted Stock Units.

Rhea-AI Summary

OLD SECOND BANCORP INC executive Donald Pilmer reported an open-market sale of 25,000 shares of Old Second Bancorp, Inc. common stock at an average price of $20.7518 per share. After this sale, he directly holds 48,054 common shares. The filing also shows 39,498 restricted stock units, plus indirect holdings of 1,450 shares in a spouse's IRA, 183 shares in a profit sharing plan, and 4,023 shares in a 401-K plan.

Rhea-AI Summary

OLD SECOND BANCORP INC vice chairman Gary S. Collins reported open-market sales of company stock. On May 8, 2026, he sold 15,000 shares of Old Second Bancorp common stock in two transactions at $21.225 and $21.240 per share.

After these sales, Collins held 30,136 common shares directly, plus 73,256.085 shares indirectly through an IRA. He also reported 37,312 Restricted Stock Units and 7,058 common shares held via a 401-K plan, indicating he retains a substantial stake in the company.

Rhea-AI Summary

OLD SECOND BANCORP INC CFO & COO Bradley S. Adams reported routine changes in his holdings. During the first quarter, 35 shares of Old Second Bancorp common stock were allocated to his 401(k) under the company’s Employee Salary and Savings Plan, bringing that indirect plan position to 10,159 shares as of March 31, 2026.

He also reports 160,401 common shares held directly, including 75,300 shares held jointly with his spouse through a broker and 85,101 shares held jointly outright, plus 84,980 restricted stock units.

Rhea-AI Summary

OLD SECOND BANCORP INC vice chairman Gary S. Collins reported a small internal share allocation and updated his holdings. During the first quarter, 253 shares of Old Second Bancorp, Inc. common stock were allocated to his 401(k) under the Old Second Bancorp, Inc. Salary and Savings Plan, bringing that indirect 401(k) position to 7,058 shares as of March 31, 2026.

Separate from the plan, Collins holds 40,136 common shares directly in a brokerage account and 78,256.085 shares indirectly through IRA accounts, plus 37,312 restricted stock units. The filing reflects routine benefit-plan and ownership reporting rather than open-market buying or selling.

Rhea-AI Summary

OLD SECOND BANCORP INC EVP Donald Pilmer reported routine plan-related updates to his holdings of Old Second Bancorp, Inc. Common Stock. During the first quarter, 13 shares were allocated to his 401(k) plan and 1 share to an employees profit sharing plan. After these updates, he indirectly holds 4,023 shares via the 401(k) and 183 shares via the profit sharing plan, plus 1,450 shares in his spouse's IRA and 73,054 shares directly in a brokerage account. He also directly holds 39,498 Restricted Stock Units.

Rhea-AI Summary

OLD SECOND BANCORP INC chairman and CEO James Eccher reported routine plan-related share allocations with no open-market trades. On March 31, 2026, 369 shares of Old Second Bancorp common stock were allocated to his 401-K and 22 shares to an employees profit sharing plan. Following these transactions, he indirectly holds 33,387 shares via the 401-K and 6,357 shares via the profit sharing plan, and directly holds 378,399 common shares, including 148 jointly with his spouse and 378,251 in a brokerage account, plus 188,252 restricted stock units.

Rhea-AI Summary

OLD SECOND BANCORP INC executive Richard A. Gartelmann, Jr., an EVP, reported a routine update to his equity holdings. During the first quarter, 43 shares of Old Second Bancorp common stock were allocated to his 401-K under the company’s Employee Salary and Savings Plan. After this allocation, he indirectly holds 12,606 shares in the 401-K and directly holds 29,551 shares of common stock, along with 21,294 restricted stock units. The filing reflects ongoing compensation and retirement plan activity rather than open-market trading.

Rhea-AI Summary

Old Second Bancorp vice chairman Gary S. Collins reported an open-market sale of 22,154 shares of Old Second Bancorp, Inc. Common Stock on March 20, 2026 at a weighted average price of $19.3841 per share, with trades ranging from $19.37 to $19.40.

After this sale, he holds 40,136 shares directly, plus indirect holdings of 78,256.085 shares in IRAs (including 41,000 in a Roth IRA and 37,256.085 in a traditional IRA) and 6,805 shares through a 401(k), along with 37,312 restricted stock units.

Rhea-AI Summary

Old Second Bancorp CFO & COO Bradley S. Adams reported equity transactions in Old Second Bancorp, Inc. Common Stock. He acquired 15,657 shares on March 2, 2026 as a grant/award tied to performance-based restricted stock units under the 2019 Equity Incentive Plan, after performance exceeded target levels for the applicable period.

On the same date, 4,587 shares at $19.91 per share were withheld by the issuer to cover applicable tax obligations related to the vesting of 15,657 performance-based units, with the remaining shares added to his common stock holdings. Following these transactions, he directly owned 160,401 common shares, held 10,202 shares indirectly through a 401-k plan, and held 84,980 restricted stock units.

Rhea-AI Summary

Old Second Bancorp vice chairman Gary S. Collins reported equity compensation activity in company stock. On March 2, 2026, he acquired 14,432 shares of Old Second Bancorp, Inc. common stock at $0.00 per share as a grant tied to the vesting of performance-based restricted stock units under the company’s 2019 Equity Incentive Plan. A footnote explains that earlier he had reported 8,246 units based on target performance and that actual performance above target led to an additional 6,186 shares being delivered. The company withheld 4,228 shares at $19.91 per share to cover tax obligations related to this vesting, with the remaining shares added to his common stock holdings. After these updates, he holds 46,624 shares of common stock directly, 78,256.085 shares indirectly through IRAs, 6,805 shares indirectly via a 401(k), and 37,312 restricted stock units directly.

Rhea-AI Summary

OLD SECOND BANCORP INC executive vice president Donald Pilmer reported equity compensation-related transactions in company common stock. He acquired 9,201 shares at no cost through vesting of performance-based restricted stock units tied to the 2019 Equity Incentive Plan after performance goals were achieved above target, resulting in an additional 3,945 shares beyond a previously reported target amount. To cover tax withholding on the 9,201 vested shares, 2,720 shares were withheld by the issuer at a price of $19.91 per share, with the remaining shares added to his direct common stock holdings. Following these transactions, he reports directly holding 73,054 common shares, along with indirect holdings through a 401(k) plan, a profit-sharing plan, and his spouse’s IRA, and 39,498 restricted stock units.

Rhea-AI Summary

Old Second Bancorp executive vice president Richard A. Gartelmann Jr. reported equity compensation activity in company stock. He acquired 4,523 shares of Old Second Bancorp, Inc. common stock at $0.00 per share through the vesting of performance-based restricted stock units granted under the 2019 Equity Incentive Plan. Footnotes explain that earlier he had reported 2,585 units based on target performance and that stronger results led to an additional 1,938 shares being delivered. The company withheld 1,537 shares at a price of $19.91 per share to cover tax obligations related to the vesting, rather than through an open-market sale. Following these transactions, the filing notes a mix of directly held shares, brokerage holdings, 401(k) shares, and restricted stock units.

Rhea-AI Summary

Old Second Bancorp Chairman and CEO James Eccher reported equity compensation activity in company stock. He received a grant/award of 43,818 Old Second Bancorp, Inc. common shares tied to performance-based restricted stock units, and 12,838 shares were disposed of at $19.91 per share to cover tax withholding. After these transactions, he directly owned 378,399 common shares.

Rhea-AI Summary

OLD SECOND BANCORP INC director Jill E. York reported a mix of equity award activity and tax-related share withholding. On February 17, she acquired 3,121 Restricted Stock Units (RSUs) as a grant under the Long Term Incentive Plan, with three-year cliff vesting.

On February 21, 3,077 RSUs were disposed of at $20.57 per share to cover tax liabilities upon vesting of a prior award, a non–open-market transaction. Following these events, she holds OSBC common stock both directly and indirectly, including shares held in trust with her spouse.

Rhea-AI Summary

OLD SECOND BANCORP INC director John Williams Jr. reported equity compensation and related tax withholding transactions. On February 17, 2026, he acquired 3,121 Restricted Stock Units as a grant under the Long Term Incentive Plan, which carries three-year cliff vesting. On February 21, 2026, 3,077 RSUs were disposed of through a tax-withholding disposition at $20.57 per share to cover tax liabilities. Following these transactions, he directly held 10,595 RSUs and 36,830 shares of Old Second Bancorp common stock. The common stock total includes 6,157 shares held in his name, 20,548 shares held with a brokerage, and 10,125 shares held in a trust.

Rhea-AI Summary

OLD SECOND BANCORP INC director Patti Temple Rocks reported equity compensation activity involving restricted stock units and related tax withholding. On February 17, 2026, she acquired 3,121 restricted stock units as a grant under the Old Second Bancorp, Inc. Long Term Incentive Plan, with three-year cliff vesting.

On February 21, 2026, 3,077 shares were delivered to cover tax liabilities at $20.57 per share, reducing her restricted stock unit holdings to 10,595 units held directly. Following these transactions, she also reported 20,351 shares of Old Second Bancorp common stock held directly and 18,678.85 shares held indirectly through an IRA.

Rhea-AI Summary

OLD SECOND BANCORP INC director Hugh H. McLean reported equity award activity involving restricted stock units and common stock. On February 17, 2026, he received a grant of 3,121 restricted stock units at $0.00 per unit under the company’s Long Term Incentive Plan, which carry a three-year cliff vesting schedule.

Upon vesting on the third anniversary of the prior grant, 3,077 shares of common stock were issued and added to his holdings, with a related tax-withholding disposition of 3,077 restricted stock units at $20.57 per share on February 21, 2026. Following these transactions, he directly held 10,595 restricted stock units and 157,274 shares of Old Second Bancorp, Inc. common stock.

Rhea-AI Summary

Old Second Bancorp director Billy J. Lyons Jr. received a grant of 3,121 Restricted Stock Units on February 17 under the company’s Long Term Incentive Plan, with three-year cliff vesting. On February 21, 3,077 units were disposed of to cover tax withholding at $20.57 per share. Following these transactions, he directly holds 10,595 restricted stock units and 20,073 shares of Old Second Bancorp common stock.

Rhea-AI Summary

OLD SECOND BANCORP INC director Keith Kotche reported equity compensation activity and related tax withholding. On February 17, 2026, he acquired 3,121 Restricted Stock Units at a price of $0.00 per unit as a grant/award under the Old Second Bancorp, Inc. Long Term Incentive Plan. A footnote states these restricted stock units have a three-year cliff vesting schedule.

On February 21, 2026, 3,077 Restricted Stock Units were disposed of at $20.57 per share in a tax-withholding disposition to satisfy tax obligations upon vesting. Following this tax-related disposition, Kotche directly owned 10,595 Restricted Stock Units. Separate holding entries show direct ownership of Old Second Bancorp, Inc. common stock totaling 184,384 shares as of February 17, 2026, with an additional line reflecting 3,077 shares of common stock.

Rhea-AI Summary

OLD SECOND BANCORP INC director Dennis L. Klaeser received a grant of 3,121 Restricted Stock Units under the company’s Long Term Incentive Plan, which have three-year cliff vesting. On vesting, 3,077 shares were disposed of at $20.57 per share to cover tax obligations, with the remaining shares added to his common stock holdings.

Rhea-AI Summary

OLD SECOND BANCORP INC director Barry Finn reported equity compensation activity involving restricted stock units (RSUs) and related tax withholding. On February 17, 2026, he acquired 3,121 RSUs at $0.00 per unit as a grant under the Long Term Incentive Plan, which features three-year cliff vesting.

On February 21, 2026, 3,077 RSUs were disposed of at $20.57 per share to cover tax liabilities by delivering shares. Footnotes indicate vested RSUs were issued as common stock and added to his holdings, which include shares held outright and in a brokerage account.

Rhea-AI Summary

OLD SECOND BANCORP INC director Edward Bonifas reported a mix of equity compensation activity. On February 17, 2026, he received a grant of 3,121 Restricted Stock Units at a stated price of $0.00 per unit, increasing his direct RSU holdings to 13,672 units.

On February 21, 2026, 3,077 Restricted Stock Units were disposed of at $20.57 per share in a tax-withholding disposition tied to vesting on the third anniversary of the grant, with the vested shares issued and added to his common stock holdings. After these transactions, he directly held 172,254 shares of Old Second Bancorp common stock and 13,672 RSUs, with some shares held outright in his name and some held in a trust.

Rhea-AI Summary

Old Second Bancorp vice chairman Gary S. Collins reported equity compensation changes and related tax withholding. On February 17, 2026, he received a grant of 8,858 restricted stock units, each representing a right to one share of common stock. Half of these RSUs are time-based and vest on the third anniversary of the grant date, while the other half are performance-based and may ultimately vest between 0% and 175% of the original award, depending on compensation committee–approved performance metrics.

On February 21, 2026, the issuer withheld 2,784 shares at $20.57 per share to cover tax obligations upon vesting of 8,246 previously reported time-based RSUs, with the remaining vested shares added to Collins’s common stock holdings. The filing also updates his direct and indirect ownership positions, including shares held outright, in a brokerage account, IRAs, and a 401(k).

Rhea-AI Summary

Old Second Bancorp (OSBC) chairman and CEO James Eccher reported a mix of equity award activity and tax withholding on company stock. He received a grant of 54,010 restricted stock units, split evenly between time-based awards that vest on the third anniversary of the grant date and performance-based awards that may ultimately vest between 0% and 175% of the initial performance-based units, depending on compensation committee–approved metrics. The filing also shows 7,515 shares of common stock were withheld by the issuer to cover tax obligations tied to the vesting of 25,038 previously reported time-based units, with the remaining vested shares added to his common stock holdings.

Rhea-AI Summary

OLD SECOND BANCORP INC executive vice president Donald Pilmer reported equity compensation changes and related tax withholding. On February 17, 2026, he received a grant of 11,292 restricted stock units, split between time-based awards vesting on the third anniversary and performance-based awards that may vest within a 0%–175% range based on committee-approved metrics. On February 21, 2026, 1,818 shares of common stock valued at $20.57 per share were withheld by the issuer to cover tax obligations tied to the vesting of 5,256 previously granted time-based units, with the remaining vested shares added to his common stock holdings.

Rhea-AI Summary

Old Second Bancorp EVP Richard A. Gartelmann Jr. reported equity-compensation activity involving restricted stock units tied to the company’s common stock. He received a grant of 5,912 restricted stock units, split evenly between time-based and performance-based awards.

On the same award, 894 shares were withheld at $20.57 per share to cover tax obligations when 2,585 previously reported time-based units vested, with the remaining vested shares added to his common stock holdings. Following these transactions, he holds company stock both directly and through a 401(k).

Rhea-AI Summary

Old Second Bancorp CFO & COO Bradley S. Adams reported equity compensation and related tax withholding transactions. On February 17, he received a grant of 25,428 restricted stock units (RSUs), split evenly between time-based and performance-based awards, each RSU representing one share of common stock.

On February 21, 2,923 shares of common stock valued at $20.57 per share were withheld by the issuer to cover tax obligations tied to vesting of 8,946 previously granted time-based RSUs, rather than sold in the open market.

Rhea-AI Summary

Campbell Darin Patrick reported acquisition or exercise transactions in this Form 4 filing.

OLD SECOND BANCORP INC disclosed that Darin Patrick Campbell, President of Powersports Lending and a director, received a grant of 10,562 restricted stock units on common stock. After this award, he directly holds 10,562 shares of restricted stock and 274,589 shares of common stock.

The grant is split between 5,281 time-based restricted stock units that vest on the third anniversary of the grant date and 5,281 performance-based restricted stock units. The performance-based units may vest between 0% and 175% of the original award, depending on compensation committee-approved performance metrics, with any vested shares delivered within three to five business days after vesting.