| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $523,550 | 3 | 100 |
Sells | $0 | 0 | 0 |
| Brady Todd C | President and CEO | 1 | $418,450 | 0 | $0 | $418,450 |
| DOUGLAS RICHARD | director | 1 | $98,000 | 0 | $0 | $98,000 |
| Alfieri Michael | Principal Financial Officer | 1 | $7,100 | 0 | $0 | $7,100 |
Aldeyra Therapeutics, Inc., a biotechnology company, discovers and develops therapies designed to treat immune-mediated diseases. Its lead product candidate is reproxalap, a reactive aldehyde species (RASP) modulator, which is in Phase III clinical trial for the treatment of dry eye disease and allergic conjunctivitis; and ADX-2191, a dihydrofolate reductase inhibitor for the treatment of primary vitreoretinal lymphoma and retinitis pigmentosa. The company also develops ADX-629, an orally administered RASP modulator that is in Phase 2 clinical …
Over the last 12 months, insiders at Aldeyra The have bought $523,550 and sold $0 worth of Aldeyra The stock.
On average, over the past 5 years, insiders at Aldeyra The have bought $2.22M and sold $3.42M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Brady Todd C (President and CEO) — $418,450. DOUGLAS RICHARD (director) — $98,000. Alfieri Michael (Principal Financial Officer) — $7,100.
The last purchase of 250,000 shares for transaction amount of $418,450 was made by Brady Todd C (President and CEO) on 2026‑06‑03.
| 2026-06-03 | Brady Todd C | President and CEO | 250,000 0.373% | $1.67 | $418,450 | -18.28% | ||
| 2026-03-19 | DOUGLAS RICHARD | director | 70,000 0.089% | $1.40 | $98,000 | -13.39% | ||
| 2026-03-18 | Alfieri Michael | Principal Financial Officer | 5,000 0.0083% | $1.42 | $7,100 | +11.97% | ||
| 2025-08-13 | Alfieri Michael | Principal Financial Officer | 2,500 0.0041% | $5.30 | $13,250 | -11.55% | ||
| 2025-08-11 | Sale | Machatha Stephen | Chief Development Officer | 22,073 0.0362% | $5.15 | $113,713 | -8.76% | |
| 2025-04-03 | Sale | PERCEPTIVE ADVISORS LLC | 10 percent owner | 3.4M 5.6943% | $1.42 | $4.83M | +249.65% | |
| 2024-08-12 | Sale | Machatha Stephen | Chief Development Officer | 16,041 0.0272% | $4.74 | $75,975 | +8.84% | |
| 2024-08-12 | Sale | Greenberg Bruce | See Remarks | 10,834 0.0184% | $4.74 | $51,313 | +8.84% | |
| 2024-04-05 | PERCEPTIVE ADVISORS LLC | 10 percent owner | 37,712 0.0643% | $4.74 | $178,755 | +6.46% | ||
| 2024-04-04 | PERCEPTIVE ADVISORS LLC | 10 percent owner | 140,281 0.2374% | $4.67 | $655,112 | +7.26% | ||
| 2024-04-03 | PERCEPTIVE ADVISORS LLC | 10 percent owner | 309,847 0.5185% | $4.09 | $1.27M | +20.96% | ||
| 2024-04-02 | PERCEPTIVE ADVISORS LLC | 10 percent owner | 186,051 0.3061% | $3.44 | $640,015 | +41.41% | ||
| 2024-04-01 | PERCEPTIVE ADVISORS LLC | 10 percent owner | 8,374 0.0141% | $3.25 | $27,216 | +53.52% | ||
| 2024-03-12 | Sale | Brady Todd C | President and CEO | 85,324 0.147% | $3.05 | $260,238 | +62.13% | |
| 2024-03-12 | Sale | Machatha Stephen | Chief Development Officer | 11,537 0.0206% | $3.16 | $36,503 | +62.13% | |
| 2024-03-11 | Sale | Brady Todd C | President and CEO | 97,914 0.1675% | $3.27 | $320,521 | +49.85% | |
| 2024-03-11 | Sale | Machatha Stephen | Chief Development Officer | 18,231 0.0324% | $3.41 | $62,102 | +49.85% | |
| 2024-03-11 | Sale | Greenberg Bruce | See Remarks | 13,201 0.0235% | $3.41 | $44,968 | +49.85% | |
| 2023-10-18 | Sale | PERCEPTIVE ADVISORS LLC | 10 percent owner | 306,499 0.5276% | $1.74 | $533,308 | +112.14% | |
| 2023-10-16 | Sale | PERCEPTIVE ADVISORS LLC | 10 percent owner | 2.45M 3.6657% | $1.60 | $3.92M | +98.63% |
| Brady Todd C | President and CEO | 1721298 2.8533% | $1.07M | 12 | 2 | +8.57% |
| DOUGLAS RICHARD | director | 195000 0.3232% | $121,017.00 | 8 | 0 | +43% |
| Alfieri Michael | Principal Financial Officer | 7500 0.0124% | $4,654.50 | 2 | 0 | <0.0001% |
| EDELMAN JOSEPH | 11350085 18.8145% | $7.04M | 9 | 0 | +19.39% | |
| PERCEPTIVE ADVISORS LLC | 10 percent owner | 5875851 9.7401% | $3.65M | 18 | 3 | +8.06% |
| Reed Joshua | Chief Financial Officer | 35774 0.0593% | $22,201.34 | 1 | 0 | +5.74% |
| JOYCE MARTIN JOSEPH | 23967 0.0397% | $14,873.92 | 5 | 0 | +39.89% | |
| Bronstein Ben | director | 18644 0.0309% | $11,570.47 | 3 | 0 | +4.27% |
| Clark David J | Chief Medical Officer | 17878 0.0296% | $11,095.09 | 1 | 0 | +8.52% |
| Clarke C. Boyd | director | 15500 0.0257% | $9,619.30 | 2 | 0 | +69.28% |
| Phillips Gary M. | director | 9375 0.0155% | $5,818.13 | 1 | 0 | +20.83% |
| Walker Neal | director | 6250 0.0104% | $3,878.75 | 1 | 0 | +20.83% |
| McMullin David | Chief Commerical Officer | 6148 0.0102% | $3,815.45 | 1 | 0 | +5.74% |
| Tulipano Stephen J | Chief Financial Officer | 3333 0.0055% | $2,068.46 | 1 | 0 | +0.98% |
| Miller-Rich Nancy | director | 922 0.0015% | $572.19 | 2 | 0 | <0.0001% |
$2,542,362 | 111 | 11.81% | $36.83M | |
$156,891,025 | 80 | -24.91% | $36.3M | |
Aldeyra Therapeutics, Inc. (ALDX) | $84,911,583 | 59 | 17.82% | $37.44M |
$693,326 | 47 | -16.24% | $40.24M | |
$6,204,522 | 45 | 1.91% | $36.5M |
| Increased Positions | 61 | +39.35% | 6M | +15.53% |
| Decreased Positions | 66 | -42.58% | 4M | -9.14% |
| New Positions | 23 | New | 3M | New |
| Sold Out Positions | 12 | Sold Out | 541,678 | Sold Out |
| Total Postitions | 150 | -3.23% | 42M | +6.39% |
| Knoll Capital Management, Llc | $25,571.00 | 9.13% | 5.48M | 0 | 0% | 2025-09-30 |
| Perceptive Advisors Llc | $24,388.00 | 8.7% | 5.22M | +1M | +28.89% | 2025-09-30 |
| Blackrock, Inc. | $17,769.00 | 6.34% | 3.8M | -47,181 | -1.23% | 2025-09-30 |
| Vanguard Group Inc | $16,774.00 | 5.99% | 3.59M | +90,276 | +2.58% | 2025-09-30 |
| Ardsley Advisory Partners Lp | $8,873.00 | 3.17% | 1.9M | -150,000 | -7.32% | 2025-09-30 |
| Aqr Capital Management Llc | $7,030.00 | 2.51% | 1.51M | +31,548 | +2.14% | 2025-09-30 |
| D. E. Shaw & Co., Inc. | $6,444.00 | 2.3% | 1.38M | +892,171 | +182.94% | 2025-09-30 |
| Kingdon Capital Management, L.L.C. | $6,219.00 | 2.22% | 1.33M | 0 | 0% | 2025-09-30 |
| Geode Capital Management, Llc | $5,494.00 | 1.96% | 1.18M | +29,823 | +2.6% | 2025-09-30 |
| Kennedy Capital Management Llc | $5,194.00 | 1.85% | 1.11M | +425,245 | +61.9% | 2025-09-30 |