13G Filing: Stadium Capital Management Files Update on Builders Firstsource, Inc. (BLDR)

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. 8)

Builders FirstSource, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

12008R107

(CUSIP Number)

January 13, 2016

(Date of Event Which Requires Filing of this
Statement)

Check the appropriate box to designate the rule pursuant to which
this Schedule is filed:

[XX] Rule 13d-1(b)

[XX] Rule 13d-1(c)

[ ] Rule 13d-1(d)

* 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 the disclosures provided in a prior cover page.

The information required in 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).

Potential persons who are to respond to the collection of information
contained in this form are not required to respond unless the form displays a currently valid OMB control number.

1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

Stadium Capital Management, LLC

2. Check the Appropriate Box if a Member
of a Group (See Instructions)

(a) XX

(b) ______

3. SEC Use Only ___________________________________________________________

4. Citizenship or Place of Organization
Delaware

9. Aggregate Amount Beneficially Owned
by Each Reporting Person 6,965,874

10. Check if the Aggregate Amount in
Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented by
Amount in Row (9) 6.4%

12. Type of Reporting Person (See Instructions)
IA, OO

2. Check the Appropriate Box if
a Member of a Group (See Instructions)

(a) XX

(b) ______

3. SEC Use Only

4. Citizenship or Place of Organization
Delaware

9. Aggregate Amount Beneficially
Owned by Each Reporting Person 6,965,874

10. Check if the Aggregate Amount
in Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented
by Amount in Row (9) 6.4%

PN

1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

Alexander M. Seaver

2. Check the Appropriate Box if a Member
of a Group (See Instructions)

(a) XX

(b) ______

3. SEC Use Only ___________________________________________________________

4. Citizenship or Place of Organization
United States

9. Aggregate Amount Beneficially Owned
by Each Reporting Person 6,965,874

10. Check if the Aggregate Amount in
Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented by
Amount in Row (9) 6.4%

12. Type of Reporting Person (See Instructions)
IN

1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

Bradley R. Kent

2. Check the Appropriate Box if a Member
of a Group (See Instructions)

(a) XX

(b) ______

3. SEC Use Only ___________________________________________________________

4. Citizenship or Place of Organization
United States

9. Aggregate Amount Beneficially Owned
by Each Reporting Person 6,965,874

10. Check if the Aggregate Amount in
Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented by
Amount in Row (9) 6.4%

12. Type of Reporting Person (See Instructions)
IN

1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).

Stadium Capital Partners, L.P.

2. Check the Appropriate Box if a Member
of a Group (See Instructions)

(a) ______

(b) ______

3. SEC Use Only ___________________________________________________________

4. Citizenship or Place of Organization
California

9. Aggregate Amount Beneficially Owned
by Each Reporting Person 6,365,830

10. Check if the Aggregate Amount in
Row (9) Excludes Certain Shares (See
Instructions) ______

11. Percent of Class Represented by
Amount in Row (9) 5.8%

12. Type of Reporting Person (See Instructions)
PN

Item 1.

(a) Name of Issuer

Builders FirstSource, Inc.

(b) Address of Issuer’s Principal Executive
Offices

2001 Bryan Street, Suite 1600, Dallas, TX 75201

Item 2.

(a) The names of the persons filing
this statement are:

Stadium Capital Management, LLC (“SCM”); Stadium Capital Management GP, L.P. (“SCMGP”); Alexander M. Seaver
(“Seaver”); Bradley R. Kent (“Kent”); and Stadium Capital Partners, L.P. (“SCP”), (collectively,
the “Filers”).

(b) The principal business office of
the Filers is located at:

199 Elm Street, New Canaan, CT 06840-5321.

(c) For citizenship of Filers, see
Item 4 of the cover sheet for each Filer.

(d) This statement relates to shares
of Class A common stock of the Issuer (the “Stock”).

(e) The CUSIP number of the Issuer
is: 12008R107

Item 3. If this statement is filed
pursuant to rule 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a) [ ] Broker or dealer registered
under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section
3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined
in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered
under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [XX] An investment adviser
in accordance with section 240.13d-1(b)(1)(ii)(E).

(f) [ ] An employee benefit plan or
endowment fund in accordance with section 240.13d-1(b)(1)(ii)(F).

(g) [XX] A parent holding company
or control person in accordance with 240.13d-1(b)(1)(ii)(G) (as to Seaver and Kent).

(h) [ ] A savings association as defined
in section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813).

(i) [ ] A church plan that is excluded
from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3).

(j) [ ] Group, in accordance with section
240.13d-1(b)(1)(ii)(J).

Item 4. Ownership.

See Items 5-9 and 11 of the cover page for each Filer.

Item 5. Ownership of Five Percent
or Less of a Class

If this statement is being filed to report the fact that as of the
date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check
the following [ ].

Item 6. Ownership of More than Five
Percent on Behalf of Another Person.

SCP is an investment limited partnership, the general partner of
which is SCMGP. SCM is the general partner of SCMGP, and an investment adviser whose clients have the right to receive or the power
to direct the receipt of dividends from, or the proceeds from the sale of, the Stock. Seaver and Kent are the Managing Members
of SCM.

Item 7. Identification and Classification
of the Subsidiary Which Acquired the Security Being

Not applicable.

Item 8. Identification and Classification
of Members of the Group.

See Item 2(a) of this Schedule.

Item 9. Notice of Dissolution of Group

Not applicable.

Item 10. Certification.

The following Certification is made by SCM, Kent and Seaver.

By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and
are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were
not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

The following Certification is made by SCP and SCMGP:

By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant
in any transaction having that purpose or effect.

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 25, 2016

EXHIBIT A

AGREEMENT REGARDING JOINT FILING

OF STATEMENT ON SCHEDULE 13D OR 13G

The undersigned agree to file jointly with
the Securities and Exchange Commission (the “SEC”) any and all statements on Schedule 13D or Schedule 13G (and any amendments
or supplements thereto) required under section 13(d) of the Securities Exchange Act of 1934, as amended, in connection with purchases
by the undersigned of the common stock of Builders FirstSource, Inc. For that purpose, the undersigned hereby constitute and appoint
Stadium Capital Management, LLC, a Delaware limited liability company, as their true and lawful agent and attorney-in-fact, with
full power and authority for and on behalf of the undersigned to prepare or cause to be prepared, sign, file with the SEC and furnish
to any other person all certificates, instruments, agreements and documents necessary to comply with section 13(d) and section
16(a) of the Securities Exchange Act of 1934, as amended, in connection with said purchases, and to do and perform every act necessary
and proper to be done incident to the exercise of the foregoing power, as fully as the undersigned might or could do if personally
present.

Dated: February 13, 2014