TERMINATION OF REGISTRATION
BMC Stock Holdings, Inc., a Delaware corporation (the Registrant), is filing these post-effective amendments (these
Post-Effective Amendments) to the following Registration Statements on Form S-8 (collectively, the Registration Statements) to withdraw and deregister any and all unissued and unsold
securities and obligations of the Registrant that had been registered but remain unsold or otherwise unissued under such Registration Statements as of the date hereof:
(a) Registration Statement on Form S-8 filed with the Securities Exchange Commission (SEC)
on August 14, 2013, registering 1,800,000 of the Registrants common stock, par value $0.01 per share (the Registrants Common Stock), which were reserved for issuance under the Stock Building Supply Holdings, Inc. 2013
Incentive Compensation Plan (the 2013 Plan) (File No. 333-190611) (the First Registration Statement);
(b) Registration Statement on Form S-8 filed with the SEC on March 23, 2016, registering
3,800,000 of the Registrants Common Stock, which were reserved for issuance under the 2013 Plan (File No. 333-210336) (the Second Registration Statement and, together with the First
Registration Statement, the 2013 Plan Registration Statements);
(c) Post-Effective Amendment No. 1 to the 2013 Plan
Registration Statements filed with the SEC on May 21, 2020, providing that the 2013 Registration Statements also covered 3,634,203 shares of Registrants Common Stock as provided therein (File
No. 333-190611);
(d) Post-Effective Amendment No. 1 to the 2013 Plan Registration
Statements filed with the SEC on May 21, 2020 providing that the 2013 Registration Statements also covered 3,634,203 shares of Registrants Common Stock as provided therein (File
No. 333-210336); and
(e) Registration Statement on Form
S-8 filed with the SEC on May 21, 2020, registering 2,650,000 of the Registrants Common Stock, which were reserved for issuance under the BMC Stock Holdings, Inc. 2020 Incentive Compensation Plan on
the Registration Statement on Form S-8 (File No. 333-238573).
On January 1, 2021, as previously announced, Boston Merger Sub I Inc. (Merger Sub), a Delaware corporation and a direct wholly-owned subsidiary of Builders FirstSource, Inc., a Delaware corporation (Builders FirstSource), merged with and into the Registrant (the Merger), with the Registrant surviving the
Merger as a direct, wholly-owned subsidiary of Builders FirstSource, pursuant to an Agreement and Plan of Merger, dated as of August 26, 2020, by and among the Registrant, Builders FirstSource, and Merger
Sub. As a result of the Merger, the Registrant has terminated any and all offers and sales of its securities pursuant to the Registration Statements. In accordance with an undertaking made by the Registrant in its Registration Statements to remove
from registration, by means of post-effective amendments, any securities of the Registrant that remain unsold at the termination of the offers and sales of such securities, the Registrant hereby removes from registration any and all securities
registered under the Registration Statements that remained unsold as of the date hereof.