ALDX SEC Form 4 filings
Aldeyra Therapeutics, Inc. Latest Insider Trading Activity
Our insider trading activity tracker for Aldeyra Therapeutics, Inc. shows 13 total open-market insider transactions for ALDX over the past 2,565 days. The most recent displayed transaction was on June 3, 2026, when Brady Todd C (Aldeyra Therapeutics, Inc. President and CEO) reported a purchase of 250,000 shares at $1.67 per share. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
Insider Trading For ALDX Charted on Daily Candles. Scroll left or zoom out to load earlier candles (up to 2 years).
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ALDX | 2026-06-05 | 2026-06-03 | Aldeyra Therapeutics, Inc. | Brady Todd C | President and CEO | Buy | 1 | 250,000 | $1.67 | $417,500.00 | 14.52% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ALDX | 2025-08-15 | 2025-08-13 | Aldeyra Therapeutics, Inc. | Alfieri Michael | Principal Financial Officer | Buy | 1 | 2,500 | $5.30 | $13,250.00 | 100.00% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting ALDX | 2024-08-14 | 2024-08-12 | Aldeyra Therapeutics, Inc. | Greenberg Bruce | Officer | Sell | 1 | 10,834 | $4.74 | $51,353.16 | 7.90% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting ALDX | 2024-04-17 | 2024-03-12 | Aldeyra Therapeutics, Inc. | Machatha Stephen | Chief Development Officer | Sell | 1 | 11,537 | $3.16 | $36,456.92 | 4.36% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting ALDX | 2024-03-12 | 2024-03-12 | Aldeyra Therapeutics, Inc. | Machatha Stephen | Chief Development Officer | Sell | 2 | 29,768 | $3.31 | $98,624.63 | 5.63% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ALDX | 2019-09-16 | 2019-09-12 | Aldeyra Therapeutics, Inc. | Joyce Martin Joseph | Director | Buy | 1 | 1,700 | $5.86 | $9,962.00 | 8.65% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ALDX | 2019-09-13 | 2019-09-12 | Aldeyra Therapeutics, Inc. | Douglas Richard | Director | Buy | 2 | 20,000 | $5.89 | $117,800.00 | 13.33% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ALDX | 2019-09-11 | 2019-09-10 | Aldeyra Therapeutics, Inc. | Douglas Richard | Director | Buy | 2 | 20,000 | $5.00 | $100,000.00 | 18.18% | View Filing |
| ESPP: Employee share purchase program ALDX | 2019-09-10 | 2019-09-06 | Aldeyra Therapeutics, Inc. | Clark David J | Chief Medical Officer | Buy | 1 | 5,000 | $5.06 | $25,300.00 | 27.97% | View Filing |
| ESPP: Employee share purchase program ALDX | 2019-09-09 | 2019-09-05 | Aldeyra Therapeutics, Inc. | Mcmullin David | Chief Commerical Officer | Buy | 1 | 4,329 | $4.68 | $20,259.72 | 70.41% | View Filing |
⚠️ THE SAMPLE ABOVE IS DEFERRED BY 6 HOURS ⚠️
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