BUILDERS FIRSTSOURCE INC

Ticker: BLDR CUSIP: 12008R107 Class: EQTY

Horizon Investment Services, LLC's Holding History (CIK: 0001426940)

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

Q2 2018

Shares 10,533 Value ($000) $193 Avg Close $19.12 Range $17.74 - $20.79

Q1 2018

Shares 32,177 Value ($000) $638 Avg Close $21.18 Range $19.15 - $23.28

Q4 2017

Shares 31,452 Value ($000) $685 Avg Close $18.96 Range $16.52 - $22.08

Q3 2017

Shares 24,759 Value ($000) $445 Avg Close $16.13 Range $14.39 - $18.08

Q2 2017

Shares 28,958 Value ($000) $444 Avg Close $14.94 Range $13.33 - $16.50

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	10,533	$193	$19.12	$17.74 - $20.79
Q1 2018	32,177	$638	$21.18	$19.15 - $23.28
Q4 2017	31,452	$685	$18.96	$16.52 - $22.08
Q3 2017	24,759	$445	$16.13	$14.39 - $18.08
Q2 2017	28,958	$444	$14.94	$13.33 - $16.50