<SEC-DOCUMENT>0000921895-22-001046-index.html : 20220401
<SEC-HEADER>0000921895-22-001046.hdr.sgml : 20220401
<ACCEPTANCE-DATETIME>20220401172522
ACCESSION NUMBER:		0000921895-22-001046
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20220401
DATE AS OF CHANGE:		20220401

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACI WORLDWIDE, INC.
		CENTRAL INDEX KEY:			0000935036
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				470772104
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-45029
		FILM NUMBER:		22799468

	BUSINESS ADDRESS:	
		STREET 1:		3520 KRAFT ROAD, SUITE 300
		CITY:			NAPLES
		STATE:			FL
		ZIP:			34105
		BUSINESS PHONE:		239-403-4600

	MAIL ADDRESS:	
		STREET 1:		3520 KRAFT ROAD, SUITE 300
		CITY:			NAPLES
		STATE:			FL
		ZIP:			34105

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TRANSACTION SYSTEMS ARCHITECTS INC
		DATE OF NAME CHANGE:	19950109

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Starboard Value LP
		CENTRAL INDEX KEY:			0001517137
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		777 THIRD AVENUE, 18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		(212) 845-7977

	MAIL ADDRESS:	
		STREET 1:		777 THIRD AVENUE, 18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>sc13da306297289_04012022.htm
<DESCRIPTION>AMENDMENT NO. 3 TO THE SCHEDULE 13D
<TEXT>
Document 1 - file: sc13da306297289_04012022.htm

</DOCUMENT>
</SEC-DOCUMENT>