UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)*

Engility Holdings, Inc.

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

29286C 107

(CUSIP Number)

David J. Sorkin, Esq.

Kohlberg Kravis Roberts & Co. L.P.

9 West 57th Street, Suite 4200

New York, New York 10019

Telephone: (212) 750-8300

with a copy to:

Sebastian Tiller, Esq.

Simpson Thacher & Bartlett LLP

425 Lexington Avenue

New York, New York 10017

Telephone: (212) 455-2000

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

January 14, 2019

(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 §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g) check the following box. ☐

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7(b) 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. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR 2006 Fund L.P.

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 BOX 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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR Associates 2006 L.P.

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 BOX 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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR 2006 GP 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 BOX 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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	OO

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR Fund Holdings L.P.

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 BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Cayman Islands

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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR Fund Holdings GP Limited

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 BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Cayman Islands

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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	CO

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR Group Holdings Corp.

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 BOX 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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	CO

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR & Co. Inc.

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 BOX 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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	CO

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	KKR 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 BOX 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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	OO

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Henry R. Kravis

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 BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States

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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

SCHEDULE 13D

CUSIP No. 29286C 107

1	NAME OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	George R. Roberts

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 BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States

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 BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

This Amendment No. 3 (this “Amendment No. 3”) amends and supplements the Schedule 13D filed on March 5, 2015, as amended by Amendment No. 1 to the Schedule 13D filed on April 6, 2018, as amended by Amendment No. 2 to the Schedule 13D filed on September 11, 2018 (as so amended, the “Schedule 13D”) by the Reporting Persons (as defined below), relating to the shares of common stock, par value $0.01 (the “Common Stock”), of Engility Holdings, Inc., a Delaware corporation (the “Issuer”). Each Item below amends and supplements the information disclosed under the corresponding Item of the Schedule 13D. Except as specifically provided herein, this Amendment No. 3 does not modify any of the information previously reported in the Schedule 13D. Capitalized terms used but not defined in this Amendment No. 3 shall have the same meanings herein as are ascribed to such terms in the Schedule 13D.

This statement on Schedule 13D is being filed by:

(i)

KKR 2006 Fund L.P., a Delaware limited partnership (“KKR 2006 Fund”);

(ii)

KKR Associates 2006 L.P., a Delaware limited partnership (“KKR Associates”);

(iii)

KKR 2006 GP LLC, a Delaware limited liability company (“KKR 2006 GP”);

(iv)

KKR Fund Holdings L.P., a Cayman Islands exempted limited partnership (“KKR Fund Holdings”);

(v)

KKR Fund Holdings GP Limited, a Cayman Islands limited company (“KKR Fund Holdings GP”);

(vi)

KKR Group Holdings Corp., a Delaware corporation (“KKR Group Holdings”);

(vii)

KKR & Co. Inc., a Delaware corporation (“KKR & Co.”);

(viii)

KKR Management LLC, a Delaware limited liability company (“KKR Management”);

(ix)

Henry R. Kravis, a United States citizen; and

(x)

George R. Roberts, a United States citizen (the persons and entities listed in items (i) through (x) are collectively referred to herein as the “Reporting Persons”).

Item 4.

Purpose of Transaction.

Item 4 of the Schedule 13D is hereby amended and supplemented by the following:

Item 6 of the Schedule 13D is incorporated herein by reference.

Item 5.

Interest in Securities of the Issuer.

Item 5 of the Schedule 13D is hereby amended and restated as follows:

(a)-(b) None of the Reporting Persons and, to the knowledge of each Reporting Person each other person described in Item 2 hereof, beneficially owns any shares of Common Stock.

(c) Except as set forth in this Amendment No. 3, none of the Reporting Persons and, to the knowledge of each Reporting Person each other person described in Item 2 hereof, has effected any transactions in shares of Common Stock in the past 60 days.

(d) Not applicable.

(e) As of January 14, 2019, the Reporting Persons ceased to be the beneficial owners of more than five percent of the outstanding shares of Common Stock.

Item 6.

Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Item 6 of the Schedule 13D is hereby supplemented by the following:

On January 14, 2019, Science Applications International Corporation (“SAIC”) acquired the Issuer pursuant to that certain Agreement and Plan of Merger entered into by and among the Issuer, SAIC and Raptors Merger Sub, Inc., a direct wholly-owned subsidiary of SAIC (“Merger Sub”), dated as of September 9, 2018 (the “Merger Agreement”). In accordance with the Merger Agreement, Merger Sub merged with and into the Issuer, with the Issuer surviving such merger as a wholly-owned subsidiary of SAIC (the “Merger”). Pursuant to the terms of the Merger Agreement, each outstanding share of Common Stock issued and outstanding immediately prior to the effective time of the Merger (other than shares owned by the Issuer or any of its subsidiaries), automatically converted into the right to receive 0.450 validly issued, fully paid and non-assessable shares of SAIC common stock.

New Birch Partners, LP (f/k/a Birch Partners, LP) (“Birch Partners”) directly owned 17,920,892 shares of Common Stock prior to the closing of the Merger. Each of KKR 2006 Fund, OPERF Co-Investment LLC, KKR Partners III, L.P. and 8 North America Investor L.P. held limited partnership interests in Birch Partners and KKR 2006 Fund held membership interests in Birch GP, LLC, the general partner of Birch Partners. Immediately prior to the closing of the Merger, each of Birch Partners, and Birch GP, LLC dissolved, and Birch Partners distributed its rights and interests in the shares of Common Stock it held to its limited partners.

In connection with the completion of the Merger, the Stockholders Agreement, dated February 26, 2015, as amended, by and among the Issuer, Birch Partners, and for the limited purposes set forth therein, the KKR Investors and GA Investors, terminated pursuant to its terms.

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: January 16, 2019

	KKR 2006 FUND, L.P.

	By: KKR Associates 2006 L.P., its general partner

	By: KKR 2006 GP LLC, its general partner

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Chief Financial Officer

	KKR ASSOCIATES 2006 L.P.

	By: KKR 2006 GP LLC, its general partner

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Chief Financial Officer

	KKR 2006 GP LLC

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Chief Financial Officer

	KKR FUND HOLDINGS L.P.

	By: KKR Group Holdings Corp., a general partner

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Chief Financial Officer

	KKR FUND HOLDINGS GP LIMITED

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Director

	KKR GROUP HOLDINGS CORP.

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Chief Financial Officer

	KKR & CO. INC.

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Chief Financial Officer

	KKR MANAGEMENT LLC

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact for William J. Janetschek, Chief Financial Officer

	HENRY R. KRAVIS

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact

	GEORGE R. ROBERTS

	By:	/s/ Terence Gallagher
	Name:	Terence Gallagher
	Title:	Attorney-in-fact

Engility Holdings, Inc. SC 13D/A