TETRA TECHNOLOGIES INC DEL

Ticker: TTI CUSIP: 88162F105 Class: Common Stock

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

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

Q3 2016

Shares 1,527,341 Value ($000) $9,332 Avg Close $6.08 Range $5.33 - $6.77

Q2 2016

Shares 1,557,042 Value ($000) $9,918 Avg Close $6.16 Range $4.65 - $7.75

Q1 2016

Shares 1,588,795 Value ($000) $10,089 Avg Close $5.86 Range $4.62 - $7.81

Q4 2015

Shares 1,609,337 Value ($000) $12,102 Avg Close $7.78 Range $5.66 - $9.44

Q3 2015

Shares 1,693,061 Value ($000) $10,006 Avg Close $6.34 Range $4.62 - $7.76

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2016	1,527,341	$9,332	$6.08	$5.33 - $6.77
Q2 2016	1,557,042	$9,918	$6.16	$4.65 - $7.75
Q1 2016	1,588,795	$10,089	$5.86	$4.62 - $7.81
Q4 2015	1,609,337	$12,102	$7.78	$5.66 - $9.44
Q3 2015	1,693,061	$10,006	$6.34	$4.62 - $7.76