ACI Worldwide CEO surrenders shares for tax liability

ACI Worldwide, Inc. President and CEO Thomas W. Warsop III reported a routine share disposition tied to equity compensation.

Rhea-AI Filing Summary

ACI Worldwide, Inc. President and CEO Thomas W. Warsop III reported a routine share disposition tied to equity compensation. On the transaction date, he surrendered 8,075 shares of common stock, valued at $45.03 per share, back to the company to cover tax liabilities.

The tax obligation arose from the vesting of 20,522 shares, representing one third of the restricted stock units granted on June 1, 2023. After this transaction and the inclusion of 18 shares acquired under the Employee Stock Purchase Plan, Warsop directly holds 483,017 shares of ACI Worldwide common stock.

Insider Trade Summary

Disposition: 8,075 shares

Disposition 1 txn

Insider Warsop Thomas W III

Role President and CEO

Type	Security	Shares	Price	Value
Disposition	Common Stock	8,075	$45.03	$364K

Holdings After Transaction: Common Stock — 483,017 shares (Direct)

Footnotes (2)

1. F1. Represents shares surrendered by the reporting person to pay the tax liability due upon the vesting of 20,522 shares, representing one third of the restricted stock units granted on June 1, 2023.
2. F2. The amount of securities owned has been updated to include 18 shares acquired under the Company's Employee Stock Purchase Plan.

Key Figures

Shares surrendered: 8,075 shares Implied share value: $45.03 per share Post-transaction holdings: 483,017 shares +2 more

5 metrics

Shares surrendered 8,075 shares Disposition to issuer to pay tax liability

Implied share value $45.03 per share Value used for 8,075-share disposition

Post-transaction holdings 483,017 shares Direct ownership after disposition and ESPP update

RSUs vested 20,522 shares One third of RSUs granted June 1, 2023

ESPP shares acquired 18 shares Added through Employee Stock Purchase Plan

Key Terms

Disposition to issuer, restricted stock units, Employee Stock Purchase Plan

3 terms

Disposition to issuer financial

"transaction_code_description: Disposition to issuer"

restricted stock units financial

"upon the vesting of 20,522 shares, representing one third 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.

Employee Stock Purchase Plan financial

"acquired under the Company's Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did ACIW CEO Thomas W. Warsop III report?

ACI Worldwide CEO Thomas W. Warsop III reported surrendering 8,075 common shares to the company. The shares, valued at $45.03 each, were used to pay tax liabilities triggered by restricted stock unit vesting, rather than representing an open-market sale.

Was the ACIW CEO’s Form 4 transaction an open-market sale of shares?

No, the transaction was not an open-market sale. The CEO surrendered 8,075 shares back to ACI Worldwide to satisfy tax liabilities arising from the vesting of restricted stock units, a common mechanism for handling equity award taxes.

How many ACIW restricted stock units vested for the CEO in this filing?

The filing states that 20,522 shares vested, representing one third of the restricted stock units granted on June 1, 2023. This vesting triggered a tax liability, which the CEO covered by surrendering a portion of the resulting shares to the company.

What is Thomas W. Warsop III’s ACIW shareholding after the reported transaction?

After the reported disposition, Thomas W. Warsop III directly owns 483,017 shares of ACI Worldwide common stock. This total also reflects an update for 18 additional shares acquired under the company’s Employee Stock Purchase Plan, as noted in the filing footnotes.

Why did the ACIW CEO surrender shares, and how were they valued?

He surrendered shares to pay the tax liability from restricted stock unit vesting. The 8,075 surrendered shares were valued at $45.03 per share. This method avoids paying cash taxes and is a standard approach for settling equity compensation tax obligations.

What role did the Employee Stock Purchase Plan play in the ACIW Form 4?

The filing notes that the CEO’s ownership amount was updated to include 18 shares acquired under ACI Worldwide’s Employee Stock Purchase Plan. This adjustment is reflected in his post-transaction direct ownership total of 483,017 common shares.

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

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Accepted by SEC EDGAR 06/02/2026 - 05:10 PM EDT 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^*

Warsop Thomas W III

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		D		8,075(1)	D	$45.03	483,017(2)	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 20,522 shares, representing one third of the restricted stock units granted on June 1, 2023.

2. The amount of securities owned has been updated to include 18 shares acquired under the Company's Employee Stock Purchase Plan.

Remarks:

	Thomas W Warsop, III	06/02/2026
	** 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)