ALDEYRA THERAPEUTICS INC

Ticker: ALDX CUSIP: 01438T106 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q2 2018

Shares 39,215 Value ($000) $312 Avg Close $7.98 Range $6.80 - $9.30

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	39,215	$312	$7.98	$6.80 - $9.30