OLD SECOND BANCORP INC

OSBC

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001840027-26-000008
Filing date: Mar 4, 2026
Earliest execution date: Mar 2, 2026
Reporting Owners: Gartelmann Richard A JR (EVP)

Summary

Type

Sell

Net shares

+2,986

% of shares

3.43%

Amount (USD)

$30,601

Insider confidence score

83.8 out of 100

Positive

  • Very large buy (≥2.5% of shares)

Negative

  • Small buy amount (<$50K)

Stock transactions

Transaction 1

Security

Old Second Bancorp, Inc. Common Stock

Action

Grant

Date

2026-03-02

Code

A

Net shares

+4,523.0

Acquired/Disposed

Acquired

Shares Owned Before

22,042.0

Shares Owned After

26,565.0

Transaction 2

Security

Old Second Bancorp, Inc. Common Stock

Action

Tax_withhold

Date

2026-03-02

Code

F

Net shares

-1,537.0

Price per Share

$19.91

Amount (USD)

$30,601.67

Acquired/Disposed

Disposed

Shares Owned Before

31,088.0

Shares Owned After

29,551.0

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 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.

2. 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.

3. 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.

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.