ALDEYRA THERAPEUTICS INC

Ticker: ALDX CUSIP: 01438T106 Class: Common Stock

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q2 2019

Shares 218,042 Value ($000) $1,308 Avg Close $7.53 Range $4.99 - $9.22

Q1 2019

Shares 218,636 Value ($000) $1,974 Avg Close $8.50 Range $6.81 - $12.79

Q4 2018

Shares 217,147 Value ($000) $1,802 Avg Close $10.25 Range $7.15 - $13.99

Q3 2018

Shares 218,081 Value ($000) $3,010 Avg Close $8.11 Range $6.75 - $16.70

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	218,042	$1,308	$7.53	$4.99 - $9.22
Q1 2019	218,636	$1,974	$8.50	$6.81 - $12.79
Q4 2018	217,147	$1,802	$10.25	$7.15 - $13.99
Q3 2018	218,081	$3,010	$8.11	$6.75 - $16.70