ACI Worldwide CFO surrenders shares for tax payment

ACI Worldwide Chief Financial Officer Robert William Leibrock reported a routine share disposition tied to equity compensation.

Rhea-AI Filing Summary

ACI Worldwide Chief Financial Officer Robert William Leibrock reported a routine share disposition tied to equity compensation. He surrendered 1,289 shares of common stock at $42.80 per share to the issuer to cover taxes on the vesting of 4,113 restricted stock units. After this transaction, he directly holds 208,260 shares, so the tax-related disposition represents a small portion of his overall position.

Insights

Equity compensation and insider-transactions analyst

CFO surrendered shares to cover taxes on vesting RSUs.

The filing shows ACI Worldwide’s CFO, Robert William Leibrock, disposing of 1,289 common shares at $42.80 per share. A footnote explains these shares were surrendered to the issuer to pay tax liabilities arising from the vesting of 4,113 restricted stock units granted on March 6, 2026.

This is a compensation-driven event rather than an open-market sale, so it carries limited signaling value about management’s view of the stock. Following the transaction, the CFO still directly owns 208,260 shares, indicating that only a small fraction of his holdings was used to satisfy taxes.

Insider Trade Summary

Disposition: 1,289 shares

Disposition 1 txn

Insider Leibrock Robert William

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Disposition	Common Stock	1,289	$42.80	$55K

Holdings After Transaction: Common Stock — 208,260 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 surrendered: 1,289 shares Disposition price: $42.80 per share Post-transaction holdings: 208,260 shares +1 more

4 metrics

Shares surrendered 1,289 shares Disposition to issuer to pay tax liability on RSU vesting

Disposition price $42.80 per share Price per share for 1,289 surrendered shares

Post-transaction holdings 208,260 shares Common stock directly held by CFO after transaction

RSUs vesting 4,113 shares Portion of restricted stock units vesting from March 6, 2026 grant

Key Terms

restricted stock units, Disposition to issuer, tax liability, Form 4

4 terms

restricted stock units financial

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

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.

Disposition to issuer financial

"transaction_code_description": "Disposition to issuer""

tax liability financial

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

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

What insider transaction did ACIW’s CFO report on this Form 4?

ACI Worldwide’s CFO, Robert William Leibrock, reported disposing of 1,289 shares of common stock at $42.80 per share. The shares were surrendered to the issuer to cover tax liabilities from the vesting of previously granted restricted stock units.

Was the ACIW CFO’s Form 4 transaction an open-market sale?

No, the transaction was not an open-market sale. A footnote states the 1,289 shares were surrendered to ACI Worldwide to pay tax liabilities triggered by the vesting of 4,113 restricted stock units, making it a routine tax-related disposition.

How many ACIW shares does the CFO hold after this Form 4 transaction?

After the reported disposition, ACI Worldwide’s CFO directly holds 208,260 shares of common stock. This indicates the 1,289 shares surrendered for taxes represent a relatively small portion of his overall equity position in the company.

What caused the tax liability leading to the ACIW CFO’s share surrender?

The tax liability arose from the vesting of 4,113 restricted stock units that were granted to the CFO on March 6, 2026. To satisfy this obligation, he surrendered 1,289 shares of common stock back to ACI Worldwide instead of paying taxes in cash.

What does the transaction code on the ACIW Form 4 indicate?

The Form 4 uses transaction code D, described as a disposition to issuer. Combined with the footnote, this shows the CFO’s 1,289-share transaction was a surrender to ACI Worldwide for tax withholding on vested restricted stock units, not a discretionary market trade.

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Accepted by SEC EDGAR 06/08/2026 - 05:10 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)
06/06/2026

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	06/06/2026		D		1,289(1)	D	$42.8	208,260	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	06/08/2026
	** 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)