OSBC (OSBC) CEO James Eccher receives 54,010 RSUs, with tax shares withheld

Rhea-AI Filing 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.

Insider Trade Summary

5 transactions reported

Mixed 5 txns

Insider Eccher James

Role CHAIRMAN AND CEO

Type	Security	Shares	Price	Value
Tax Withholding	Restricted Stock Units	7,515	$20.57	$155K
Grant/Award	Restricted Stock Units	54,010	$0.00	--
holding	Old Second Bancorp, Inc. Common Stock	--	--	--
holding	Old Second Bancorp, Inc. Common Stock	--	--	--
holding	Old Second Bancorp, Inc. Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 213,290 shares (Direct); Old Second Bancorp, Inc. Common Stock — 347,419 shares (Direct); Old Second Bancorp, Inc. Common Stock — 33,018 shares (Indirect, By 401-K)

Footnotes (1)

1. Each restricted stock unit represents a contingent right to receive one share of common stock. The reporting person was granted 54,010 restricted stock units on the date of the grant, 27,005 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 27,005 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person in 3 to 5 business days from the date of vesting. Represents shares withheld by the issuer to satisfy applicable tax withholding obligations in connection with the vesting of 25,038 previously reported time-based restricted stock units, the remaining shares of which were issued and added to the reporting person's common stock holdings. Included in this total are 148 shares held jointly with spouse, 17,523 shares held outright in Mr. Eccher's name and 329,748 shares held in a brokerage account.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Eccher James

(Last) (First) (Middle)

37 S. RIVER ST.

(Street)

AURORA IL 60506

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
OLD SECOND BANCORP INC [ OSBC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHAIRMAN AND CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/17/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Restricted Stock Units	02/17/2026		A		54,010(1)	A	$0	238,328	D
Restricted Stock Units	02/21/2026		F		7,515(2)	D	$20.57	213,290	D
Old Second Bancorp, Inc. Common Stock								347,419(3)	D
Old Second Bancorp, Inc. Common Stock								33,018	I	By 401-K
Old Second Bancorp, Inc. Common Stock								6,335	I	By Profit Sharing

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of common stock. The reporting person was granted 54,010 restricted stock units on the date of the grant, 27,005 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 27,005 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person in 3 to 5 business days from the date of vesting.

2. Represents shares withheld by the issuer to satisfy applicable tax withholding obligations in connection with the vesting of 25,038 previously reported time-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 148 shares held jointly with spouse, 17,523 shares held outright in Mr. Eccher's name and 329,748 shares held in a brokerage account.

	/s/ Shirley Cantrell, Attorney-in-Fact	02/24/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transactions did OSBC CEO James Eccher report on this Form 4?

James Eccher reported a grant of 54,010 restricted stock units and a withholding of 7,515 shares of Old Second Bancorp common stock to satisfy tax obligations related to previously vesting restricted stock units.

How are James Eccher’s new OSBC restricted stock units structured?

Eccher received 54,010 restricted stock units, with 27,005 time-based units vesting on the third anniversary of the grant and 27,005 performance-based units that may vest between 0% and 175% based on compensation committee–approved performance metrics.

What does the 7,515-share disposition on OSBC’s Form 4 represent?

The 7,515 shares represent stock withheld by Old Second Bancorp to satisfy tax withholding obligations related to the vesting of 25,038 previously reported time-based restricted stock units, with the remaining vested shares added to Eccher’s common stock holdings.

When will James Eccher receive shares from his new OSBC restricted stock units?

For vested units, shares will be delivered to James Eccher within 3 to 5 business days from each vesting date, according to the Form 4 footnote describing the settlement timing of restricted stock units.

How much of Eccher’s OSBC award is performance-based versus time-based?

Of the 54,010 restricted stock units, 27,005 are time-based and vest on the third anniversary of the grant, while 27,005 are performance-based and may vest between 0% and 175% depending on compensation committee–approved performance criteria.

What portion of James Eccher’s OSBC holdings are described in the Form 4 footnotes?

The filing notes that his holdings include 148 shares held jointly with his spouse, 17,523 shares held outright in his name, and 329,748 shares in a brokerage account, all counted within his reported total common stock position.