OLD SECOND BANCORP INC

OSBC

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001598917-26-000006
Filing date: Mar 4, 2026
Earliest execution date: Mar 2, 2026
Reporting Owners: ADAMS BRADLEY S. (CFO)

Summary

Type

Sell

Net shares

+11,070

% of shares

4.53%

Amount (USD)

$91,327

Insider confidence score

87.5 out of 100

Positive

  • Very large buy (≥2.5% of shares)
  • Significant buy amount ($50K+)

Stock transactions

Transaction 1

Security

Old Second Bancorp, Inc. Common Stock

Action

Grant

Date

2026-03-02

Code

A

Net shares

+15,657.0

Acquired/Disposed

Acquired

Shares Owned Before

149,331.0

Shares Owned After

164,988.0

Transaction 2

Security

Old Second Bancorp, Inc. Common Stock

Action

Tax_withhold

Date

2026-03-02

Code

F

Net shares

-4,587.0

Price per Share

$19.91

Amount (USD)

$91,327.17

Acquired/Disposed

Disposed

Shares Owned Before

164,988.0

Shares Owned After

160,401.0

Filing's footnotes

1. 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.

2. 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.

3. 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,

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.