UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)*

APPGATE INC.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

03783X104

(CUSIP Number)

David J. Snyderman

Magnetar Capital LLC

1603 Orrington Ave.

Evanston, Illinois 60201

(847) 905-4400

(Name, Address and Telephone Number of Person Authorized
to Receive Notices and Communications)

July 2, 2024

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. x

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No. 03783X104

1	NAME OF REPORTING PERSONS MAGNETAR FINANCIAL LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) ¨ (b) ¨
3	SEC USE ONLY
4	SOURCE OF FUNDS (see instructions) OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 0
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 0

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
14	TYPE OF REPORTING PERSON (see instructions) IA, OO

CUSIP No. 03783X104

1	NAME OF REPORTING PERSONS MAGNETAR CAPITAL PARTNERS LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) ¨ (b) ¨
3	SEC USE ONLY
4	SOURCE OF FUNDS (see instructions) OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 0
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 0

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
14	TYPE OF REPORTING PERSON (see instructions) HC, PN

CUSIP No. 03783X104

1	NAME OF REPORTING PERSONS Supernova Management LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) ¨ (b) ¨
3	SEC USE ONLY
4	SOURCE OF FUNDS (see instructions) OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 0
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 0

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
14	TYPE OF REPORTING PERSON (see instructions) HC; OO

CUSIP No. 03783X104

1	NAME OF REPORTING PERSONS David J. Snyderman
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) ¨ (b) ¨
3	SEC USE ONLY
4	SOURCE OF FUNDS (see instructions) OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) ☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES OF AMERICA

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 0
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 0

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
14	TYPE OF REPORTING PERSON (see instructions) HC; IN

AMENDMENT NO. 3 TO SCHEDULE 13D

This Amendment No. 3 (the “Amendment”) amends the Schedule 13D filed by the Reporting Persons on February 14, 2024, as amended by that Schedule 13D/A filed by the Reporting Persons on April 23, 2024 and that Schedule 13D/A filed by the Reporting Persons on May 7, 2024 (the “Original Schedule 13D” and, as amended and supplemented by this Amendment, the “Schedule 13D”), with respect to the Common Stock of the Issuer. Capitalized terms used in this Amendment and not otherwise defined shall have the same meanings ascribed to them in the Original Schedule 13D.

Item 4.

Purpose of Transaction

Item 4 is hereby amended and supplemented as follows:

“As previously disclosed by the Company on the Form 8-K filed by the Company on May 6, 2024, with the Securities and Exchange Commission, on May 6, 2024 (the “Petition Date”), the Company and certain of its subsidiaries (collectively, the “Debtors”) filed voluntary petitions (the “Bankruptcy Petitions,” and the cases commenced thereby, the “Chapter 11 Cases”) for relief under Chapter 11 of the United States Bankruptcy Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”). On June 17, 2024, the Debtors filed the Second Amended Joint Prepackaged Plan of Reorganization of Appgate, Inc. and its Debtor Subsidiaries Pursuant to Chapter 11 of the Bankruptcy Code [Docket No. 150] (as may be amended, supplemented, or modified from time to time, the “Plan”) with the Bankruptcy Court. On June 18, 2024, the Bankruptcy Code confirmed the Plan and entered an Order (I) Approving the Disclosure Statement For, and Confirming, the Second Amended Joint Prepackaged Plan of Reorganization of Appgate, Inc. and its Debtor Subsidiaries Pursuant to Chapter 11 of the Bankruptcy Code and (II) Granting Related Relief [Docket No. 159] (the “Confirmation Order”). Capitalized terms used but not specifically defined herein have the meanings ascribed to them in the Plan. The Plan became effective on July 2, 2024 (the “Effective Date”).

Pursuant to the Plan, on the Effective Date, the obligations of the Debtors under the following agreements were cancelled, subject to limitations as set forth in Article IV.H of the Plan:

Amended and Restated Note Purchase Agreement, dated June 9, 2023 (as amended, restated, supplemented, or otherwise modified from time to time consistent with the terms thereof), by and among Appgate Cybersecurity, Inc. as issuer, Appgate, Inc., as parent, the guarantors party thereto, Magnetar Financial LLC, as representative of the holders, and U.S. Bank Trust Company, National Association, as collateral agent.

Amended and Restated Note Issuance Agreement, dated June 9, 2023 (as amended, restated, supplemented, or otherwise modified from time to time consistent with the terms thereof), by and among Appgate Cybersecurity, Inc. as issuer, Appgate, Inc., as parent, the guarantors party thereto, Magnetar Financial LLC, as representative of the holders, and U.S. Bank Trust Company, National Association, as collateral agent.

As a result of the transactions described above, the Reporting Person no longer beneficially owns any shares of Company Common Stock.

Item 5.

Interest in Securities of the Issuer

Item 5 is hereby amended and restated in its entirety with the following:

(a)-(b) As a result of the transactions described in Item 4, as of July 2, 2024, the Reporting Persons no longer beneficially own any shares of Common Stock. As such, the Reporting Persons no longer have any voting or dispositive power over any shares of Common Stock.

(c) Except for the transactions described in Item 4, there were no transactions in the Common Stock effected by the Reporting Persons during the past 60 days.

(d) Not applicable.

(e) As a result of the transactions described in Item 4, as of July 2, 2024, the Reporting Persons ceased to be the beneficial owner of more than five percent of the Common Stock.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: July 3, 2024

magnetar financial llc

By: Magnetar Capital Partners LP, its Sole Member

By:	/s/ Hayley Stein
	Name:	Hayley Stein
	Title:	Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC, the General Partner of Magnetar Capital Partners LP

magnetar capital partners LP

By:	/s/ Hayley Stein
	Name:	Hayley Stein
	Title:	Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC, the General Partner of Magnetar Capital Partners LP

supernova management llc

By:	/s/ Hayley Stein
	Name:	Hayley Stein
	Title:	Attorney-in-fact for David J. Snyderman, Manager

/s/ Hayley Stein
Attorney-in-fact for David J. Snyderman

Appgate, Inc. SC 13D/A