BUILDERS FIRSTSOURCE INC

Ticker: BLDR CUSIP: 12008R107 Class: EQTY

WHITEBOX ADVISORS LLC's Holding History (CIK: 0001257391)

Note: Option positions (PUT/CALL) are excluded.

Q4 2015

Shares 184,212 Value ($000) $2,041 Avg Close $12.71 Range $10.02 - $15.72

Q3 2015

Shares 15,720 Value ($000) $199 Avg Close $14.20 Range $11.98 - $16.69

Q2 2015

Shares 217,524 Value ($000) $2,793 Avg Close $12.20 Range $6.54 - $14.24

Q4 2014

Shares 177,734 Value ($000) $1,221 Avg Close $5.98 Range $4.85 - $6.98

Q3 2014

Shares 263,363 Value ($000) $1,435 Avg Close $6.51 Range $5.10 - $7.92

Q2 2014

Shares 245,306 Value ($000) $1,835 Avg Close $7.79 Range $6.92 - $9.40

Q1 2014

Shares 112,674 Value ($000) $1,025 Avg Close $8.12 Range $7.14 - $9.16

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	184,212	$2,041	$12.71	$10.02 - $15.72
Q3 2015	15,720	$199	$14.20	$11.98 - $16.69
Q2 2015	217,524	$2,793	$12.20	$6.54 - $14.24
Q4 2014	177,734	$1,221	$5.98	$4.85 - $6.98
Q3 2014	263,363	$1,435	$6.51	$5.10 - $7.92
Q2 2014	245,306	$1,835	$7.79	$6.92 - $9.40
Q1 2014	112,674	$1,025	$8.12	$7.14 - $9.16