Aldeyra Therapeutics, Inc. (ALDX) is a publicly traded company in the Unknown sector. Across all available filings, 21 corporate insiders have executed 122 transactions totaling $81.8M, demonstrating a bullish sentiment with $68.9M in net insider flow. The most recent transaction on Aug 13, 2025 involved a purchase of 2,500 shares valued at $13.3K.
No significant insider buying has been recorded for ALDX in the recent period.
No significant insider selling has been recorded for ALDX in the recent period.
Based on recent SEC filings, insider sentiment for ALDX is bullish with an Insider Alignment Score of 92/100 and a net flow of $68.9M. Insiders are accumulating shares, which historically signals confidence in the company's future performance.
Insider trading at Aldeyra Therapeutics, Inc. (ALDX) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 21 insiders are actively trading ALDX stock, having executed 122 transactions in the past 90 days. The most active insider is Life Sciences Master Fund Ltd Perceptive (Executive), who has made 14 transactions totaling $32.8M.
Get notified when executives and directors at ALDX file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Aug 13, 2025 | Alfieri Michael | Executive | Purchase | 2,500 | $5.30 | $13.3K | |
| Aug 11, 2025 | Machatha Stephen | Executive | Sale | 22,073 | $5.15 | $113.7K | |
| Aug 12, 2024 | Greenberg Bruce | Executive | Sale | 10,834 | $4.74 | $51.4K | |
| Aug 12, 2024 | Machatha Stephen | Executive | Sale | 16,041 | $4.74 | $76.0K | |
| Apr 5, 2024 | Edelman Joseph | Executive | Purchase | 37,712 | $4.74 | $178.8K | |
| Apr 4, 2024 | Edelman Joseph | Executive | Purchase | 140,281 | $4.67 | $655.1K | Large |
| Apr 3, 2024 | Sciences Master Fund Ltd Perceptive Life | Executive | Purchase | 309,847 | $4.09 | $1.3M | Large |
| Apr 2, 2024 | Sciences Master Fund Ltd Perceptive Life | Executive | Purchase | 186,051 | $3.44 | $640.0K | Large |
| Apr 1, 2024 | Sciences Master Fund Ltd Perceptive Life | Executive | Purchase | 8,374 | $3.25 | $27.2K | |
| Mar 12, 2024 | Machatha Stephen | Executive | Sale | 11,537 | $3.16 | $36.5K | |
| Mar 12, 2024 | C. Brady Todd | Executive | Sale | 85,324 | $3.05 | $260.2K | |
| Mar 12, 2024 | Machatha Stephen | Executive | Sale | 11,537 | $3.16 | $36.5K | |
| Mar 11, 2024 | Greenberg Bruce | Executive | Sale | 13,201 | $3.41 | $45.0K | |
| Mar 11, 2024 | C. Brady Todd | Executive | Sale | 97,914 | $3.27 | $320.2K | |
| Mar 11, 2024 | Machatha Stephen | Executive | Sale | 18,231 | $3.41 | $62.2K |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Purchase(P) | 68 | $75.3M | 89.1% |
Sale(S) | 14 | $6.5M | 7.7% |
Payment(F) | 5 | $1.5M | 1.8% |
Exercise(M) | 10 | $1.2M | 1.4% |
Award(A) | 21 | $39.9K | 0.0% |
Conversion(C) | 4 | $0 | 0.0% |
Insiders at Aldeyra Therapeutics, Inc. are accumulating shares at an accelerated pace. With 21 insiders making 122 transactions totaling $75.3M in purchases versus $6.5M in sales, the net buying activity of $68.9M signals strong executive confidence. Life Sciences Master Fund Ltd Perceptive (Executive) leads the buying activity with $32.8M in transactions across all time.