TWILIO INC

Ticker: TWLO CUSIP: 90138F102 Class: Common Stock

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q2 2019

Shares 1,620 Value ($000) $221 Avg Close $133.15 Range $118.48 - $151.00

Q1 2019

Shares 66,301 Value ($000) $8,565 Avg Close $112.62 Range $80.13 - $136.00

Q4 2018

Shares 84,615 Value ($000) $7,556 Avg Close $81.24 Range $62.43 - $100.47

Q3 2018

Shares 193,470 Value ($000) $16,693 Avg Close $73.11 Range $54.50 - $88.88

Q2 2018

Shares 170,705 Value ($000) $9,563 Avg Close $49.53 Range $36.07 - $62.34

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	1,620	$221	$133.15	$118.48 - $151.00
Q1 2019	66,301	$8,565	$112.62	$80.13 - $136.00
Q4 2018	84,615	$7,556	$81.24	$62.43 - $100.47
Q3 2018	193,470	$16,693	$73.11	$54.50 - $88.88
Q2 2018	170,705	$9,563	$49.53	$36.07 - $62.34