(ONB)

Role: 10%+ Owner
Signature: /s/ Daniel C. Reardon (Co-CEO and Trustee of Otto Bremer Trust)
Issuer symbol: ONB
Transactions as of: 26 Feb 2026
Net transactions value: -$49,999,993
Form type: 4
Filing time: 02 Mar 2026, 16:22:13 UTC
Previous filing: 07 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Otto Bremer Trust	10%+ Owner	30 E 7TH ST STE 2900, ST. PAUL	/s/ Daniel C. Reardon (Co-CEO and Trustee of Otto Bremer Trust)	02 Mar 2026	0002064726

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ONB	Common Stock	Sale	$49,999,993	-1,926,782	-4.5%	$25.95	41,210,548	26 Feb 2026	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id	Content
F1	Shares of common stock of the Issuer (the "Shares") sold pursuant to an agreement between the Issuer and the trustees of the Reporting Person (the "Trustees"), at a purchase price of $25.95 per Share, which per Share price was agreed upon between the Issuer and the Trustees on February 11, 2026, based on the range of intraday trading prices for the Issuer's common stock on the NASDAQ Stock Exchange on that date. The sale of the Shares closed on February 26, 2026. The Shares were sold for investment portfolio diversification purposes of the Reporting Person.
F2	The Reporting Person has three Trustees. Any action by the Reporting Person with respect to the shares of Common Stock may be taken only by majority vote of the Trustees and, therefore, no Trustee individually has voting or dispositive power with respect to the shares.

Content

Shares of common stock of the Issuer (the "Shares") sold pursuant to an agreement between the Issuer and the trustees of the Reporting Person (the "Trustees"), at a purchase price of $25.95 per Share, which per Share price was agreed upon between the Issuer and the Trustees on February 11, 2026, based on the range of intraday trading prices for the Issuer's common stock on the NASDAQ Stock Exchange on that date. The sale of the Shares closed on February 26, 2026. The Shares were sold for investment portfolio diversification purposes of the Reporting Person.

The Reporting Person has three Trustees. Any action by the Reporting Person with respect to the shares of Common Stock may be taken only by majority vote of the Trustees and, therefore, no Trustee individually has voting or dispositive power with respect to the shares.

Remarks:

Solely for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the Reporting Person may be deemed to be a director-by-deputization by virtue of the Reporting Person's one-time contractual right to designate a Trustee for appointment to the board of directors of the Issuer pursuant to the Investor Agreement by and between the Trustees and the Issuer, dated November 25, 2024, under which the Issuer appointed one of the Trustees as a director of the Issuer, effective May 1, 2025, to serve in accordance with the corporate governance guidelines and standards applicable to all Issuer directors.