ALDEYRA THERAPEUTICS INC

Ticker: ALDX CUSIP: 01438T106 Class: Common Stock

Palo Alto Investors LP's Holding History (CIK: 0001306923)

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

Q4 2025

Shares 225,465 Value ($000) $1,168 Avg Close $5.14 Range $3.94 - $5.79

Q3 2025

Shares 225,465 Value ($000) $1,177 Avg Close $5.21 Range $3.73 - $6.17

Q2 2025

Shares 225,465 Value ($000) $864 Avg Close $2.58 Range $1.14 - $5.91

Q1 2025

Shares 225,465 Value ($000) $1,296 Avg Close $5.91 Range $4.66 - $7.20

Q4 2024

Shares 225,465 Value ($000) $1,125 Avg Close $5.13 Range $4.09 - $6.17

Q3 2024

Shares 225,465 Value ($000) $1,215 Avg Close $4.76 Range $3.10 - $6.55

Q2 2024

Shares 225,465 Value ($000) $746 Avg Close $3.92 Range $3.13 - $4.97

Q1 2024

Shares 225,465 Value ($000) $737 Avg Close $3.29 Range $2.71 - $4.34

Q4 2023

Shares 225,465 Value ($000) $791 Avg Close $3.09 Range $1.42 - $6.74

Q3 2023

Shares 160,800 Value ($000) $1,074 Avg Close $7.42 Range $5.95 - $8.46

Q2 2023

Shares 160,800 Value ($000) $1,349 Avg Close $9.85 Range $5.47 - $11.97

Q1 2023

Shares 160,800 Value ($000) $1,597 Avg Close $7.07 Range $5.75 - $10.03

Q4 2022

Shares 160,800 Value ($000) $1,119 Avg Close $5.72 Range $4.95 - $7.15

Q3 2022

Shares 160,800 Value ($000) $859 Avg Close $6.00 Range $3.68 - $7.99

Q2 2022

Shares 160,800 Value ($000) $642 Avg Close $3.44 Range $2.35 - $5.04

Q1 2022

Shares 160,800 Value ($000) $715 Avg Close $3.98 Range $3.00 - $5.31

Q4 2021

Shares 160,800 Value ($000) $643 Avg Close $7.63 Range $3.37 - $9.74

Q3 2021

Shares 160,800 Value ($000) $1,412 Avg Close $9.18 Range $7.90 - $11.45

Q2 2021

Shares 160,800 Value ($000) $1,822 Avg Close $12.02 Range $10.12 - $15.95

Q1 2021

Shares 160,800 Value ($000) $1,910 Avg Close $11.52 Range $6.47 - $14.62

Q4 2020

Shares 160,800 Value ($000) $1,103 Avg Close $7.02 Range $6.21 - $8.70

Q3 2020

Shares 118,000 Value ($000) $874 Avg Close $6.46 Range $3.96 - $7.79

Q2 2020

Shares 73,500 Value ($000) $306 Avg Close $3.65 Range $1.94 - $5.27

Q1 2020

Shares 73,500 Value ($000) $182 Avg Close $4.50 Range $1.48 - $6.57

Q4 2019

Shares 73,500 Value ($000) $427 Avg Close $5.78 Range $4.48 - $8.05

Q3 2019

Shares 73,500 Value ($000) $387 Avg Close $5.38 Range $4.31 - $6.30

Q2 2019

Shares 73,500 Value ($000) $441 Avg Close $7.53 Range $4.99 - $9.22

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	225,465	$1,168	$5.14	$3.94 - $5.79
Q3 2025	225,465	$1,177	$5.21	$3.73 - $6.17
Q2 2025	225,465	$864	$2.58	$1.14 - $5.91
Q1 2025	225,465	$1,296	$5.91	$4.66 - $7.20
Q4 2024	225,465	$1,125	$5.13	$4.09 - $6.17
Q3 2024	225,465	$1,215	$4.76	$3.10 - $6.55
Q2 2024	225,465	$746	$3.92	$3.13 - $4.97
Q1 2024	225,465	$737	$3.29	$2.71 - $4.34
Q4 2023	225,465	$791	$3.09	$1.42 - $6.74
Q3 2023	160,800	$1,074	$7.42	$5.95 - $8.46
Q2 2023	160,800	$1,349	$9.85	$5.47 - $11.97
Q1 2023	160,800	$1,597	$7.07	$5.75 - $10.03
Q4 2022	160,800	$1,119	$5.72	$4.95 - $7.15
Q3 2022	160,800	$859	$6.00	$3.68 - $7.99
Q2 2022	160,800	$642	$3.44	$2.35 - $5.04
Q1 2022	160,800	$715	$3.98	$3.00 - $5.31
Q4 2021	160,800	$643	$7.63	$3.37 - $9.74
Q3 2021	160,800	$1,412	$9.18	$7.90 - $11.45
Q2 2021	160,800	$1,822	$12.02	$10.12 - $15.95
Q1 2021	160,800	$1,910	$11.52	$6.47 - $14.62
Q4 2020	160,800	$1,103	$7.02	$6.21 - $8.70
Q3 2020	118,000	$874	$6.46	$3.96 - $7.79
Q2 2020	73,500	$306	$3.65	$1.94 - $5.27
Q1 2020	73,500	$182	$4.50	$1.48 - $6.57
Q4 2019	73,500	$427	$5.78	$4.48 - $8.05
Q3 2019	73,500	$387	$5.38	$4.31 - $6.30
Q2 2019	73,500	$441	$7.53	$4.99 - $9.22