ACI Worldwide (ACIW) CFO reports tax-related surrender of 2,155 shares

Rhea-AI Filing Summary

ACI Worldwide, Inc. reported an insider stock transaction by its Chief Financial Officer, Robert William Leibrock. On 12/24/2025, he disposed of 2,155 shares of common stock at a price of $48.87 per share. According to the explanation, these shares were surrendered to cover the tax liability triggered by the vesting of 6,855 shares, representing one twelfth of restricted stock units granted on September 24, 2025.

After this tax-related share surrender, Leibrock beneficially owns 162,343 shares of ACI Worldwide common stock in direct ownership.

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

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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^*

Leibrock Robert William

(Last) (First) (Middle)

6060 COVENTRY DRIVE

(Street)

ELKHORN NE 68022

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ACI WORLDWIDE, INC. [ ACIW ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/24/2025

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
Common Stock	12/24/2025		D		2,155(1)	D	$48.87	162,343	D

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. Represents shares surrendered by the reporting person to pay the tax liability due upon the vesting of 6,855 shares, representing one twelfth of the restricted stock units granted on September 24, 2025.

	Robert William Leibrock	12/30/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did ACI Worldwide (ACIW) disclose in this filing?

The filing shows that Chief Financial Officer Robert William Leibrock disposed of 2,155 shares of ACI Worldwide common stock on 12/24/2025 at $48.87 per share.

Why did ACI Worldwide CFO Robert William Leibrock dispose of 2,155 ACIW shares?

The 2,155 shares were surrendered to pay tax liability arising from the vesting of 6,855 restricted stock units that were granted on September 24, 2025.

How many ACI Worldwide (ACIW) shares does the CFO own after this transaction?

Following the reported transaction, Robert William Leibrock beneficially owns 162,343 shares of ACI Worldwide common stock, held in direct ownership.

What is the role of the insider involved in this ACIW stock transaction?

The reporting person, Robert William Leibrock, serves as the Chief Financial Officer of ACI Worldwide, Inc.

Was this ACI Worldwide insider transaction part of a derivative or non-derivative security activity?

This transaction involved non-derivative securities, specifically common stock, reported in Table I for securities acquired, disposed of, or beneficially owned.

Did this ACIW filing report any derivative securities activity for the CFO?

Table II for derivative securities is present but shows no specific derivative transactions; the detailed activity disclosed relates to common stock in Table I.