Sec Form 4/A Filing - STREET PAUL S @ BMC STOCK HOLDINGS, INC. - 2015-12-01

FORM 4/A Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person STREET PAUL S 2. Issuer Name and Ticker or Trading Symbol BMC STOCK HOLDINGS, INC. [ BMCH] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) C/O BMC STOCK HOLDINGS, INC., 980 HAMMOND DRIVE NE, SUITE 500 3. Date of Earliest Transaction (MM/DD/YY) 12/01/2015 (Street) ATLANTA, GA30328 4. If Amendment, Date Original Filed (MM/DD/YY) 12/03/2015 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/01/2015 A 1,570 A 556,056 D Common Stock 10/01/2016 F 8,954 D $ 17.73 ( 3 ) 547,102 D Common Stock 10/01/2016 F 775 D $ 17.73 ( 4 ) 546,327 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other STREET PAUL S C/O BMC STOCK HOLDINGS, INC. 980 HAMMOND DRIVE NE, SUITE 500 ATLANTA, GA30328 See Remarks Signatures By: /s/ Paul M. Street 11/10/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of June 2, 2015, between Building Materials Holding Corporation ("BMC") and Stock Building Supply Holdings, Inc. ("SBS"), BMC merged with and into SBS (the "Merger"), with SBS surviving the Merger. Following the Merger, SBS amended its name to BMC Stock Holdings, Inc. Pursuant to the terms of the Merger Agreement, (i) each then-outstanding BMC restricted stock unit was converted into an SBS restricted stock unit award with respect to 0.5231 shares of SBS common stock and (ii) each then-outstanding share of BMC common stock was converted into the right to receive 0.5231 shares of SBS common stock and cash in lieu of fractional shares of SBS common stock. ( 2 )Pursuant to the Merger Agreement, BMC restricted stock units owned by the reporting person immediately prior to the merger were converted into SBS restricted stock units issued pursuant to the Merger Agreement. The SBS restricted stock units reflected herein are performance-based units that vested on October 1, 2016. ( 3 )On December 3, 2015, the reporting person reported the grant of 25,109 restricted stock units, which vested on October 1, 2016. Reflects shares withheld to pay tax withholding requirements on the vesting of such previously granted restricted stock units. ( 4 )Reflects shares withheld to pay tax withholding requirements on the vesting of the previously granted restricted stock units described in footnote (2) herein.

Remarks: General Counsel and Corporate SecretaryAmended Form 4 being filed for reporting person to include a grant of shares that was never disclosed and to correct and reflect additional shares withheld for taxes.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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