ARCHROCK INC

Ticker: AROC CUSIP: 03957W106 Class: Common Stock

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q2 2021

Shares 79,175 Value ($000) $705 Avg Close $7.34 Range $6.72 - $7.82

Q1 2021

Shares 684,996 Value ($000) $6,501 Avg Close $7.60 Range $6.54 - $8.42

Q4 2020

Shares 919,774 Value ($000) $7,965 Avg Close $5.56 Range $3.93 - $7.25

Q3 2020

Shares 1,055,302 Value ($000) $5,678 Avg Close $4.88 Range $3.87 - $5.78

Q2 2020

Shares 966,326 Value ($000) $6,271 Avg Close $3.81 Range $2.25 - $5.44

Q1 2020

Shares 961,935 Value ($000) $3,617 Avg Close $5.11 Range $1.49 - $7.31

Q4 2019

Shares 1,006,113 Value ($000) $10,101 Avg Close $6.50 Range $5.68 - $7.13

Q3 2019

Shares 1,417,489 Value ($000) $14,132 Avg Close $6.85 Range $5.58 - $7.80

Q2 2019

Shares 1,510,555 Value ($000) $16,012 Avg Close $6.66 Range $5.99 - $7.34

Q1 2019

Shares 1,675,693 Value ($000) $16,388 Avg Close $6.39 Range $4.81 - $7.25

Q4 2018

Shares 1,453,918 Value ($000) $10,890 Avg Close $6.68 Range $4.86 - $8.37

Q3 2018

Shares 1,433,088 Value ($000) $17,484 Avg Close $8.22 Range $7.57 - $8.91

Q2 2018

Shares 1,540,842 Value ($000) $18,490 Avg Close $7.14 Range $5.29 - $8.20

Q1 2018

Shares 1,587,282 Value ($000) $13,889 Avg Close $6.09 Range $5.43 - $6.93

Q4 2017

Shares 1,641,069 Value ($000) $17,231 Avg Close $6.83 Range $5.85 - $8.14

Q3 2017

Shares 1,663,945 Value ($000) $20,883 Avg Close $6.77 Range $5.19 - $8.04

Q2 2017

Shares 1,667,426 Value ($000) $19,009 Avg Close $7.06 Range $5.94 - $8.35

Q1 2017

Shares 1,205,570 Value ($000) $14,949 Avg Close $8.56 Range $7.07 - $10.04

Q4 2016

Shares 1,209,603 Value ($000) $15,967 Avg Close $7.80 Range $6.49 - $9.05

Q3 2016

Shares 1,032,340 Value ($000) $13,503 Avg Close $6.44 Range $4.92 - $7.92

Q2 2016

Shares 1,052,339 Value ($000) $9,913 Avg Close $4.66 Range $3.28 - $5.93

Q1 2016

Shares 1,008,451 Value ($000) $8,068 Avg Close $3.21 Range $2.00 - $4.79

Q4 2015

Shares 606,526 Value ($000) $4,561 Avg Close $8.04 Range $4.02 - $13.56

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2021	79,175	$705	$7.34	$6.72 - $7.82
Q1 2021	684,996	$6,501	$7.60	$6.54 - $8.42
Q4 2020	919,774	$7,965	$5.56	$3.93 - $7.25
Q3 2020	1,055,302	$5,678	$4.88	$3.87 - $5.78
Q2 2020	966,326	$6,271	$3.81	$2.25 - $5.44
Q1 2020	961,935	$3,617	$5.11	$1.49 - $7.31
Q4 2019	1,006,113	$10,101	$6.50	$5.68 - $7.13
Q3 2019	1,417,489	$14,132	$6.85	$5.58 - $7.80
Q2 2019	1,510,555	$16,012	$6.66	$5.99 - $7.34
Q1 2019	1,675,693	$16,388	$6.39	$4.81 - $7.25
Q4 2018	1,453,918	$10,890	$6.68	$4.86 - $8.37
Q3 2018	1,433,088	$17,484	$8.22	$7.57 - $8.91
Q2 2018	1,540,842	$18,490	$7.14	$5.29 - $8.20
Q1 2018	1,587,282	$13,889	$6.09	$5.43 - $6.93
Q4 2017	1,641,069	$17,231	$6.83	$5.85 - $8.14
Q3 2017	1,663,945	$20,883	$6.77	$5.19 - $8.04
Q2 2017	1,667,426	$19,009	$7.06	$5.94 - $8.35
Q1 2017	1,205,570	$14,949	$8.56	$7.07 - $10.04
Q4 2016	1,209,603	$15,967	$7.80	$6.49 - $9.05
Q3 2016	1,032,340	$13,503	$6.44	$4.92 - $7.92
Q2 2016	1,052,339	$9,913	$4.66	$3.28 - $5.93
Q1 2016	1,008,451	$8,068	$3.21	$2.00 - $4.79
Q4 2015	606,526	$4,561	$8.04	$4.02 - $13.56