Eccher James 4

4 · OLD SECOND BANCORP INC · Filed Mar 4, 2026

Form 4

Period: 2026-03-02

DirectorCHAIRMAN AND CEO

Transactions

Award
Old Second Bancorp, Inc. Common Stock
[F1]
2026-03-02+43,818→ 391,237 total
Tax Payment
Old Second Bancorp, Inc. Common Stock
[F2][F3]
2026-03-02$19.91/sh−12,838$255,605→ 378,399 total

Holdings

Footnotes (3)

[F1]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.
[F2]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]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.

Signature

/s/ Shirley Cantrell, Attorney-in-Fact|2026-03-04

Documents

1 file