Stocks · Health care · Pharmaceutical Preparations

Aldeyra Therapeutics, Inc.

ALDX Clue Score53
United States Fiscal year ends December CIK 0001341235
$0.92 -3.31% Close, 9 Oct 2026

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
0.92 on 9 Oct 2026
6 3 1 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $5.25 14 Oct 2025 $5.34 15 Oct 2025 $5.66 16 Oct 2025 $5.39 17 Oct 2025 $5.26 20 Oct 2025 $5.44 21 Oct 2025 $5.51 22 Oct 2025 $5.19 23 Oct 2025 $5.18 24 Oct 2025 $5.24 27 Oct 2025 $5.23 28 Oct 2025 $5.14 29 Oct 2025 $5.06 30 Oct 2025 $5.03 31 Oct 2025 $5.07 3 Nov 2025 $5.23 4 Nov 2025 $4.92 5 Nov 2025 $4.93 6 Nov 2025 $4.81 7 Nov 2025 $4.69 10 Nov 2025 $5.13 11 Nov 2025 $5.23 12 Nov 2025 $5.30 13 Nov 2025 $5.02 14 Nov 2025 $5.05 17 Nov 2025 $4.95 18 Nov 2025 $4.91 19 Nov 2025 $4.86 20 Nov 2025 $4.73 21 Nov 2025 $4.96 24 Nov 2025 $5.23 25 Nov 2025 $5.26 26 Nov 2025 $5.59 28 Nov 2025 $5.48 1 Dec 2025 $5.24 2 Dec 2025 $4.87 3 Dec 2025 $4.87 4 Dec 2025 $4.88 5 Dec 2025 $4.70 8 Dec 2025 $4.95 9 Dec 2025 $4.79 10 Dec 2025 $4.79 11 Dec 2025 $4.59 12 Dec 2025 $4.54 15 Dec 2025 $3.99 16 Dec 2025 $5.31 17 Dec 2025 $5.25 18 Dec 2025 $5.01 19 Dec 2025 $4.96 22 Dec 2025 $5.54 23 Dec 2025 $5.05 24 Dec 2025 $5.28 26 Dec 2025 $5.31 29 Dec 2025 $5.17 30 Dec 2025 $5.15 31 Dec 2025 $5.18 2 Jan 2026 $4.67 5 Jan 2026 $4.24 6 Jan 2026 $4.06 7 Jan 2026 $4.16 8 Jan 2026 $4.18 9 Jan 2026 $4.11 12 Jan 2026 $4.13 13 Jan 2026 $4.14 14 Jan 2026 $4.24 15 Jan 2026 $4.41 16 Jan 2026 $4.63 20 Jan 2026 $4.75 21 Jan 2026 $4.99 22 Jan 2026 $5.22 23 Jan 2026 $5.19 26 Jan 2026 $5.23 27 Jan 2026 $5.54 28 Jan 2026 $5.42 29 Jan 2026 $5.32 30 Jan 2026 $5.36 2 Feb 2026 $5.43 3 Feb 2026 $5.41 4 Feb 2026 $5.22 5 Feb 2026 $5.09 6 Feb 2026 $5.53 9 Feb 2026 $5.56 10 Feb 2026 $5.48 11 Feb 2026 $5.32 12 Feb 2026 $5.25 13 Feb 2026 $5.28 17 Feb 2026 $5.15 18 Feb 2026 $5.02 19 Feb 2026 $5.08 20 Feb 2026 $4.95 23 Feb 2026 $4.99 24 Feb 2026 $5.21 25 Feb 2026 $5.49 26 Feb 2026 $5.50 27 Feb 2026 $5.46 2 Mar 2026 $5.62 3 Mar 2026 $5.11 4 Mar 2026 $5.20 5 Mar 2026 $4.65 6 Mar 2026 $4.80 9 Mar 2026 $5.26 10 Mar 2026 $5.01 11 Mar 2026 $4.94 12 Mar 2026 $4.67 13 Mar 2026 $4.13 16 Mar 2026 $4.23 17 Mar 2026 $1.24 18 Mar 2026 $1.42 19 Mar 2026 $1.83 20 Mar 2026 $1.81 23 Mar 2026 $2.23 24 Mar 2026 $1.87 25 Mar 2026 $1.85 26 Mar 2026 $1.84 27 Mar 2026 $1.77 30 Mar 2026 $1.68 31 Mar 2026 $1.69 1 Apr 2026 $1.68 2 Apr 2026 $1.66 6 Apr 2026 $1.54 7 Apr 2026 $1.52 8 Apr 2026 $1.57 9 Apr 2026 $1.59 10 Apr 2026 $1.78 13 Apr 2026 $1.80 14 Apr 2026 $1.79 15 Apr 2026 $1.83 16 Apr 2026 $1.80 17 Apr 2026 $1.80 20 Apr 2026 $1.78 21 Apr 2026 $1.68 22 Apr 2026 $1.70 23 Apr 2026 $1.60 24 Apr 2026 $1.55 27 Apr 2026 $1.58 28 Apr 2026 $1.57 29 Apr 2026 $1.50 30 Apr 2026 $1.52 1 May 2026 $1.59 4 May 2026 $1.62 5 May 2026 $1.72 6 May 2026 $1.74 7 May 2026 $1.73 8 May 2026 $1.73 11 May 2026 $1.76 12 May 2026 $1.71 13 May 2026 $1.70 14 May 2026 $1.66 15 May 2026 $1.68 18 May 2026 $1.60 19 May 2026 $1.54 20 May 2026 $1.55 21 May 2026 $1.59 22 May 2026 $1.55 26 May 2026 $1.78 27 May 2026 $1.71 28 May 2026 $1.75 29 May 2026 $1.75 1 Jun 2026 $1.66 2 Jun 2026 $1.64 3 Jun 2026 $1.86 4 Jun 2026 $1.76 5 Jun 2026 $1.63 8 Jun 2026 $1.74 9 Jun 2026 $1.72 10 Jun 2026 $1.69 11 Jun 2026 $1.71 12 Jun 2026 $1.76 15 Jun 2026 $1.76 16 Jun 2026 $1.78 17 Jun 2026 $1.83 18 Jun 2026 $1.96 22 Jun 2026 $2.05 23 Jun 2026 $2.02 24 Jun 2026 $1.90 25 Jun 2026 $1.80 26 Jun 2026 $1.83 29 Jun 2026 $2.05 30 Jun 2026 $2.13 1 Jul 2026 $2.43 2 Jul 2026 $2.27 6 Jul 2026 $2.28 7 Jul 2026 $2.23 8 Jul 2026 $2.13 9 Jul 2026 $2.30 10 Jul 2026 $2.07 13 Jul 2026 $1.93 14 Jul 2026 $1.93 15 Jul 2026 $1.92 16 Jul 2026 $1.72 17 Jul 2026 $1.69 20 Jul 2026 $1.70 21 Jul 2026 $1.75 22 Jul 2026 $1.70 23 Jul 2026 $1.55 24 Jul 2026 $1.52 27 Jul 2026 $1.59 28 Jul 2026 $1.58 29 Jul 2026 $1.61 30 Jul 2026 $1.60 31 Jul 2026 $1.54 3 Aug 2026 $1.53 4 Aug 2026 $1.55 5 Aug 2026 $1.60 6 Aug 2026 $1.59 7 Aug 2026 $1.55 10 Aug 2026 $1.51 11 Aug 2026 $1.51 12 Aug 2026 $1.52 13 Aug 2026 $1.44 14 Aug 2026 $1.56 17 Aug 2026 $1.56 18 Aug 2026 $1.55 19 Aug 2026 $1.58 20 Aug 2026 $1.50 21 Aug 2026 $1.52 24 Aug 2026 $1.52 25 Aug 2026 $1.55 26 Aug 2026 $1.56 27 Aug 2026 $1.54 28 Aug 2026 $1.49 31 Aug 2026 $1.48 1 Sep 2026 $1.49 2 Sep 2026 $1.49 3 Sep 2026 $1.48 4 Sep 2026 $1.48 8 Sep 2026 $1.54 9 Sep 2026 $1.50 10 Sep 2026 $1.46 11 Sep 2026 $1.34 14 Sep 2026 $1.46 15 Sep 2026 $1.37 16 Sep 2026 $1.37 17 Sep 2026 $1.38 18 Sep 2026 $1.36 21 Sep 2026 $1.35 22 Sep 2026 $1.40 23 Sep 2026 $1.35 24 Sep 2026 $1.22 25 Sep 2026 $1.21 28 Sep 2026 $1.16 29 Sep 2026 $1.32 30 Sep 2026 $1.23 1 Oct 2026 $1.29 2 Oct 2026 $1.17 5 Oct 2026 $0.92 6 Oct 2026 $0.92 7 Oct 2026 $0.96 8 Oct 2026 $0.95 9 Oct 2026 $0.92 Alfieri Michael Principal Financial Officer Bought $7.10K 18 Mar 2026 · at $1.42 · 200% of stake DOUGLAS RICHARD Director Bought $98.00K 19 Mar 2026 · at $1.40 · 56.0% of stake Brady Todd C President and CEO Bought $418.45K 3 Jun 2026 · at $1.67 · 17.0% of stake
3 buys0 sales at will0 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Net income
$33.85M
Free cash flow
$33.35M
Return on equity
-76.5%
Return on capital
-46.8%
Debt to equity
0.34

Revenue and profit

Fiscal years, as filed with the SEC · point at a year for the detail
Full statements →
0K -38M FY20 Fiscal year 2020 Revenue $0.00 Net income $37.55M Margin n/a 0K -58M FY21 Fiscal year 2021 Revenue $0.00 Net income $57.78M Margin n/a 0K -62M FY22 Fiscal year 2022 Revenue $0.00 Net income $62.02M Margin n/a 0K -38M FY23 Fiscal year 2023 Revenue $0.00 Net income $37.54M Margin n/a 0K -56M FY24 Fiscal year 2024 Revenue $0.00 Net income $55.85M Margin n/a 0K -34M FY25 Fiscal year 2025 Revenue $0.00 Net income $33.85M Margin n/a
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
3 Jun 2026 Brady Todd C
President and CEO
Bought $418.45K 17.0%
19 Mar 2026 DOUGLAS RICHARD
Director
Bought $98.00K 56.0%
18 Mar 2026 Alfieri Michael
Principal Financial Officer
Bought $7.10K 200%
13 Aug 2025 Alfieri Michael
Principal Financial Officer
Bought $13.25K opened
11 Aug 2025 Machatha Stephen
Chief Development Officer
Sold at will $113.71K 9.1%
3 Apr 2025 PERCEPTIVE ADVISORS LLC
10% owner
Sold at will $4.83M 36.7%