Builders FirstSource (BLDR) DEFA14A Additional proxy soliciting materials

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.    )

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☐	Preliminary Proxy Statement
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☐	Definitive Proxy Statement
☒	Definitive Additional Materials
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Builders FirstSource, Inc.
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Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting

to be held on May 22, 2019, for Builders FirstSource, Inc.

This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. To view the proxy statement and annual report, go towww.proxydocs.com/BLDR. To submit your proxy while visiting this site, you will need the 12 digit control number in the box below.

Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. We have chosen to use these procedures for our 2019 Annual Meeting and need YOUR participation.

If you want to receive a paper or e-mail copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year’s annual meeting, please make this request on or before May 10, 2019.

Proxy Materials Available to View or Receive:

1. Proxy Statement     2. Annual Report

Printed materials may be requested by one of the following methods:

You must use the 12 digit control number located in the shaded gray box below.		*  If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions or other inquiries should be included with your e-mail requesting material.

ACCOUNT NO. SHARES

Builders FirstSource, Inc. Notice of Annual Meeting

	Date:     Wednesday, May 22, 2019
	Time:     9:00 A.M. (Central Daylight Time)
	Place:    2001 Bryan Street, Suite 1600, Dallas, Texas 75201

The purpose of the Annual Meeting is to take action on the following proposals:

The Board of Directors recommends that you vote “FOR” each of the nominees listed below.

1. Election of Directors

01 Daniel Agroskin

02 Floyd F. Sherman

03 M. Chad Crow

The Board of Directors recommends that you vote “FOR” the following.

2. Proposal 2 – Advisory vote on the compensation of the named executive officers.

3. Proposal 3 – Ratification of the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm for the year 2019.