ACI Worldwide CFO surrenders 1,905 shares

ACIW’s CFO surrendered shares back to the company to cover taxes on recently vested restricted stock units.

Rhea-AI Filing Summary

ACI WORLDWIDE, INC. (ACIW) reported that its Chief Financial Officer, Robert William Leibrock, surrendered 1,905 shares of common stock to the issuer on September 6, 2026 at $52.95 per share. The shares were withheld to satisfy tax liability upon vesting of 4,113 restricted stock units, and he now holds 203,901 shares directly.

Insider Trade Summary

Disposition: 1,905 shares

Disposition 1 txn

Insider Leibrock Robert William

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Disposition	Common Stock F1	1,905	$52.95	$101K

Holdings After Transaction: Common Stock — 203,901 shares (Direct)

Footnotes (1)

1. F1. Represents shares surrendered by the reporting person to pay the tax liability due upon the vesting of 4,113 shares, representing one twelfth of the restricted stock units granted on March 6, 2026.

Key Figures

Shares disposed: 1,905 shares Price per share: $52.95 per share Shares held after transaction: 203,901 shares +2 more

5 metrics

Shares disposed 1,905 shares Shares surrendered to issuer on September 6, 2026

Price per share $52.95 per share Disposition to issuer used to pay tax liability

Shares held after transaction 203,901 shares Directly owned by CFO after September 6, 2026 transaction

RSUs vested 4,113 shares Portion of restricted stock units granted on March 6, 2026 that vested

Grant fraction represented by vesting One twelfth Vested RSUs are one twelfth of the March 6, 2026 RSU grant

Key Terms

Disposition to issuer, restricted stock units, tax liability

3 terms

Disposition to issuer financial

"reported as a disposition to issuer of 1,905 shares"

restricted stock units financial

"upon the vesting of 4,113 shares, representing one twelfth of the restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax liability financial

"shares surrendered by the reporting person to pay the tax liability due"

FAQ

What insider transaction did ACIW disclose for its CFO Robert William Leibrock?

ACI WORLDWIDE, INC. disclosed that CFO Robert William Leibrock surrendered 1,905 shares of common stock to the issuer on September 6, 2026 to cover tax liability from vesting restricted stock units.

How many ACIW shares did the CFO surrender and at what price?

The CFO surrendered 1,905 shares of ACIW common stock at $52.95 per share, in a disposition to the issuer used to pay tax liability related to vesting restricted stock units.

Why did the ACIW CFO dispose of 1,905 shares?

According to the filing, the 1,905 shares were surrendered by the CFO to pay the tax liability due upon the vesting of 4,113 shares that represent one twelfth of a restricted stock unit grant made on March 6, 2026.

How many ACIW shares does the CFO hold after this transaction?

After the reported disposition, CFO Robert William Leibrock directly holds 203,901 shares of ACI WORLDWIDE, INC. common stock, as stated in the Form 4 filing.

Was the ACIW CFO’s share surrender part of a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not affirmed, and no footnote states that the transaction was made under a Rule 10b5-1 trading plan.

What award was linked to the ACIW CFO’s tax withholding transaction?

The tax-related share surrender is linked to the vesting of 4,113 restricted stock units, described as one twelfth of the restricted stock units granted on March 6, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/09/2026 - 06:41 PM Accepted by SEC EDGAR 09/09/2026 - 06:40 PM Learn about SEC filing dates

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 NEBRASKA 68022

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/06/2026

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

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

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

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	09/06/2026		D		1,905(1)	D	$52.95	203,901	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 4,113 shares, representing one twelfth of the restricted stock units granted on March 6, 2026.

Remarks:

	Robert William Leibrock	09/09/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)