Leidos Holdings, Inc.
1750 Presidents Street
Reston, VA 20190

Leidos and its subsidiaries have approximately 47,000 employees in offices in 40 countries.

Computershare
P.O. Box 505000
Louisville, KY 40233-5000

Courier Delivery:
462 South 4th Street Suite 1600
Louisville, KY 40202

855-894-LDOS (5367)
201-680-6961 (International)

Deloitte & Touche LLP
1750 Tysons Boulevard, #800
McLean, VA
Phone: 703-251-1000

Leidos' fiscal year ends on the Friday closest to December 31 in each year.

Yes. Leidos Holdings, Inc's common shares are traded on the New York Stock Exchange (NYSE) under the ticker symbol, LDOS.

If your shares are registered directly in your name with Leidos’ Registrar and Transfer Agent, Computershare, you are considered a stockholder of record with respect to those shares. If your shares are held in a brokerage account or financial institution, you are considered the beneficial owner of those shares. This is also known as holding shares in “street name.” If you are a stockholder of record, all of your communications and statements will be provided by Computershare. If you hold shares in street name, your broker or financial institution will distribute communications and/or statements.

Archived conference calls are available on the Events Calendar page of Leidos' Investor website.

Yes, Leidos' dividend history can be found here.

Stockholders who hold directly registered shares in a Computershare Common Stock or ESPP account may elect to reinvest cash dividends to acquire additional shares of Leidos common stock. A dividend reinvestment election can be submitted by accessing your Computershare account online (www.computershare.com/leidos) or contacting Computershare via phone (855-894-5367). This election must be made no later than the dividend record date to be in effect when the dividend is paid.

Leidos' CUSIP number is 525327 102

Leidos stock is not sold directly by the company. Please contact your broker to purchase Leidos shares.

Leidos Tax Basis Information

IRS Form 8937 provides tax basis information for Leidos stockholders who acquired their holdings through Lockheed Martin’s August 2016 exchange offer involving shares of Abacus Innovations Corporation (“Splitco”) common stock that were subsequently exchanged for shares of Leidos Holdings, Inc. common stock. These IRS filings are made available to stockholders for informational purposes only, in accordance with Section 6045B of the Internal Revenue Code of 1986, as amended, and corresponding Treasury Regulations. Stockholders are urged to consult their own tax advisors regarding their particular circumstances.

IRS Form 8937

Splitco Tax Basis Information

To determine the tax basis of shares of Splitco common stock received by former Lockheed Martin shareholders that participated in the August 2016 exchange, former Splitco shareholders are directed to the Internal Revenue Service Form 8937 published by Lockheed Martin Corporation (“Lockheed Martin”) on its website or by clicking on the link below:

Exchange Offer Tax Information

General Stockholder - Questions and Answers

Final Information Statement

2013 Leidos Tax Basis Information

Form 8937