Exhibit 10.1

AMENDMENT NO. 3 TO

AMENDED AND RESTATED FOUR YEAR CREDIT AGREEMENT

AMENDMENT (this “Amendment”) dated as of January 27, 2016 to the Amended and
Restated Four Year Credit Agreement dated as of March 11, 2011, as amended by
Amendment No. 1 dated as of April 19, 2013 and by Amendment No. 2 dated as of
October 17, 2014 (the “Credit Agreement”) among LEIDOS HOLDINGS, INC. (formerly
known as SAIC, Inc., the “Borrower”), LEIDOS, INC. (formerly known as Science
Applications International Corporation, as guarantor (the “Guarantor”), the
LENDERS party thereto (the “Lenders”) and CITIBANK, N.A., as Administrative
Agent (the “Agent”).

PRELIMINARY STATEMENTS:

(1) The Borrower and the Requisite Lenders have agreed to amend the Credit
Agreement as hereinafter set forth.

(2) Pursuant to Section 2.13 of the Credit Agreement, the Borrower has requested
that the Maturity Date be extended for one year, to March 11, 2018.

SECTION 1. Defined Terms; References. Unless otherwise specifically defined
herein, each term used herein that is defined in the Credit Agreement has the
meaning assigned to such term in the Credit Agreement. Each reference to
“hereof”, “hereunder”, “herein” and “hereby” and each other similar reference
and each reference to “this Agreement” and each other similar reference
contained in the Credit Agreement shall, after this Amendment becomes effective,
refer to the Credit Agreement as amended hereby.

SECTION 2. Amendment. The definitions of “FATCA” and “IBOR” are amended in full
to read as follows:

“FATCA” means Sections 1471 through 1474 of the Code or any amended or successor
version that is substantially comparable, any current or future regulations or
official interpretations thereof, any agreements entered into pursuant to
Section 1471(b)(1) of the Code, any intergovernmental agreement entered into in
connection with any of the foregoing and any fiscal or regulatory legislation,
rules or practices adopted pursuant to any such intergovernmental agreement.

“IBOR” shall mean, with respect to any Interest Period for a Dollar LIBOR Loan
or Foreign Currency Loan, the rate per annum determined by the Administrative
Agent as follows:

(a) in the case of a Dollar LIBOR Loan, the rate (“Dollar LIBOR”) appearing on
Reuters Page LIBOR01 (or on any successor or substitute page of Reuters, or any
successor to or substitute for Reuters, providing rate quotations comparable to
those currently provided on such page of Reuters, as determined by the
Administrative Agent from time to time for purposes of providing quotations of
interest rates applicable to deposits in the London interbank market) at

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approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period, as the rate for Dollar deposits with a
maturity comparable to such Interest Period; or

(b) in the case of a Euromarket Funded Foreign Currency Loan, the rate (“London
IBOR”) appearing on Reuters Screen LIBOR01 (or on any successor or substitute
page of Reuters, or any successor to or substitute for Reuters, providing rate
quotations comparable to those currently provided on such page of Reuters, as
determined by the Administrative Agent from time to time for purposes of
providing quotations of interest rates applicable to deposits in the London
interbank market) at approximately 11:00 A.M., London time, two Business Days
prior to the commencement of such Interest Period, as the rate for deposits in
such Foreign Currency with a maturity comparable to such Interest Period; or

(c) in the case of a Locally Funded Foreign Currency Loan, the rate (“Local
Market IBOR”) appearing on Reuters Screen LIBOR01 (or on any successor,
substitute or alternative page of Reuters, or any successor to, substitute for
or alternative to Reuters as determined by the Administrative Agent from time to
time for purposes of providing quotations of interest rates applicable to
deposits in the applicable interbank market) at approximately 11:00 A.M., local
time, two Business Days prior to the commencement of such Interest Period, as
the rate for deposits in such Foreign Currency with a maturity comparable to
such Interest Period;

provided, in each case, if IBOR shall be less than zero, such rate shall be
deemed to be zero for the purposes of this Agreement.

SECTION 3. Consent to Extension Request. Each Lender so indicating on its
signature page to this Amendment agrees to extend the Maturity Date with respect
to its Commitment for a period of one year, expiring March 11, 2018. This
agreement to extend the Maturity Date is subject in all respects to the terms of
the Credit Agreement and is irrevocable.

SECTION 4. Representations of Borrower. The Borrower represents and warrants
that (i) the representations and warranties of the Borrower set forth in Article
V of the Credit Agreement will be true on and as of the Amendment Effective Date
and (ii) no Default will have occurred and be continuing on such date.

SECTION 5. Governing Law. This Amendment shall be governed by and construed in
accordance with the laws of the State of New York.

SECTION 6. Counterparts. This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

 

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SECTION 7. Effectiveness. Each Lender that consents to the Extension Request
shall so indicate its consent by executing as indicated on the signature pages.
Section 2 of this Amendment shall become effective on the date when the
following conditions are met (the “Amendment Effective Date”):

(a) the Agent shall have received from each of the Borrower and the Requisite
Lenders a counterpart hereof signed by such party or facsimile or other written
confirmation (in form satisfactory to the Agent) that such party has signed a
counterpart hereof; and

(b) the Agent shall have received an amendment fee for the account of each
Lender that agrees to extend the Maturity Date with respect to its Commitment in
an amount equal to 0.04% of such Lender’s Commitment.

 

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly
executed as of the date first above written.

 

LEIDOS HOLDINGS, INC. By:  

/s/ Marc H. Crown

  Name: Marc H. Crown   Title: SVP and Treasurer LEIDOS, INC. By:  

/s/ Marc H. Crown

  Name: Marc H. Crown   Title: SVP and Treasurer CITIBANK, N.A., as Agent and as
a Lender By:  

/s/ Susan Olsen

  Name: Susan Olsen   Title: Vice President

 

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Consent to the forgoing Amendment: CITIBANK, N.A. By  

/s/ Susan Olsen

  Name: Susan Olsen   Title: Vice President Consent to the Extension Request:
CITIBANK, N.A. By  

/s/ Susan Olsen

  Name: Susan Olsen   Title: Vice President

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Consent to the forgoing Amendment: BANK OF AMERICA, N.A. By  

/s/ Stuart Bonomo

  Name: Stuart Bonomo   Title: Director Consent to the Extension Request: BANK
OF AMERICA, N.A. By  

/s/ Stuart Bonomo

  Name: Stuart Bonomo   Title: Director

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Consent to the forgoing Amendment: THE BANK OF NOVA SCOTIA By  

/s/ Winston Lua

  Name: Winston Lua   Title: Director Consent to the Extension Request: THE BANK
OF NOVA SCOTIA By  

/s/ Winston Lua

  Name: Winston Lua   Title: Director

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Consent to the forgoing Amendment: WELLS FARGO BANK, NATIONAL ASSOCIATION By  

/s/ Dhiren Desai

  Name: Dhiren Desai   Title: Vice President Consent to the Extension Request:
WELLS FARGO BANK, NATIONAL ASSOCIATION By  

/s/ Dhiren Desai

  Name: Dhiren Desai   Title: Vice President

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Consent to the forgoing Amendment: MORGAN STANLEY BANK, N.A. By  

/s/ Michael King

  Name: Michael King   Title: Authorized Signatory Consent to the Extension
Request: MORGAN STANLEY BANK, N.A. By  

/s/ Michael King

  Name: Michael King   Title: Authorized Signatory

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Consent to the forgoing Amendment: U.S. BANK NATIONAL ASSOCIATION By  

/s/ Lukas Coleman

  Name: Lukas Coleman   Title: Vice President Consent to the Extension Request:
U.S. BANK NATIONAL ASSOCIATION By  

/s/ Lukas Coleman

  Name: Lukas Coleman   Title: Vice President

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Consent to the forgoing Amendment: THE BANK OF TOKYO-MITSUBISHI UFJ, LTD. By  

/s/ Maria Iarriccio

  Name: Maria Iarriccio   Title: Director Consent to the Extension Request: THE
BANK OF TOKYO-MITSUBISHI UFJ, LTD. By  

/s/ Maria Iarriccio

  Name: Maria Iarriccio   Title: Director

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Consent to the forgoing Amendment: PNC BANK, NATIONAL ASSOCIATION By  

/s/ Steven Day

  Name: Steven Day   Title: AVP Consent to the Extension Request: PNC BANK,
NATIONAL ASSOCIATION By  

/s/ Steven Day

  Name: Steven Day   Title: AVP

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Consent to the forgoing Amendment: THE BANK OF NEW YORK MELLON By  

 

  Name:   Title: Consent to the Extension Request: THE BANK OF NEW YORK MELLON
By  

 

  Name:   Title:

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Consent to the forgoing Amendment: SUNTRUST BANK By  

/s/ Anika Kirs

  Name: Anika Kirs   Title: Vice President Consent to the Extension Request:
SUNTRUST BANK By  

/s/ Anika Kirs

  Name: Anika Kirs   Title: Vice President