ALDX insider buying – Aldeyra Therapeutics, Inc.
43 insider purchases since 2016 worth $74.3M by 12 different insiders. Last 12 months: 3 purchases, $644,400. Most recent filing: 2026-11-13.
Small company Public float $232M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 26 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC 10% Owner | $29.0M 6× · 5,431,308 sh | 2016-05-26 2022-08-09 | – | 11,350,085 shares as of 2022-08-11 | Holds - never sold |
| PERCEPTIVE LIFE SCIENCES MASTER FUND LTD 10% Owner | $28.2M 9× · 3,866,102 sh | 2017-02-14 2024-04-01 | 2× · $9.3M last 2025-04-03 | 5,875,851 shares as of 2025-04-07 | Sold part |
| EDELMAN JOSEPH 10% Owner | $15.1M 4× · 1,738,514 sh | 2021-01-19 2024-04-04 | – | 9,275,851 shares as of 2024-04-08 | Holds - never sold |
| Brady Todd C CEO | $1.0M 9× · 374,601 sh | 2017-02-17 2026-06-03 | 1× · $580,417 last 2024-03-11 | 1,721,298 shares as of 2026-06-05 | Holds (sold earlier) |
| DOUGLAS RICHARD Director | $764,700 7× · 395,000 sh | 2017-02-17 2026-11-11 | – | 195,000 shares as of 2026-03-20 | Holds - never sold |
| JOYCE MARTIN JOSEPH Director | $35,042 2× · 8,767 sh | 2017-02-17 2022-06-23 | – | 23,967 shares as of 2022-06-27 | Holds - never sold |
| Clark David J Officer | $25,300 1× · 5,000 sh | 2019-09-06 2019-09-06 | – | 17,878 shares as of 2019-09-10 | Holds - never sold |
| McMullin David Officer | $20,260 1× · 4,329 sh | 2019-09-05 2019-09-05 | – | 255,183 shares as of 2020-03-06 | Holds - never sold |
| Reed Joshua CFO | $15,072 1× · 3,200 sh | 2019-09-05 2019-09-05 | – | 274,825 shares as of 2022-04-01 | Holds - never sold |
| Tulipano Stephen J CFO | $14,998 1× · 3,333 sh | 2017-02-17 2017-02-17 | – | 8,563 shares as of 2018-03-08 | Holds - never sold |
| Alfieri Michael Officer | $13,250 1× · 2,500 sh | 2025-08-13 2025-08-13 | – | 7,500 shares as of 2026-03-19 | Holds - never sold |
| Miller-Rich Nancy Director | $10,447 1× · 922 sh | 2021-05-03 2021-05-03 | – | 922 shares as of 2024-10-21 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 3 | $644,400 | 2 | – | – |
| 2025 | 1 | $13,250 | 1 | 2 | $4.9M |
| 2024 | 3 | $2.8M | 3 | 4 | $806,429 |
| 2023 | 0 | – | – | 1 | $4.5M |
| 2022 | 11 | $8.5M | 5 | – | – |
| 2021 | 3 | $37.2M | 3 | – | – |
| 2020 | 2 | $13.7M | 2 | – | – |
| 2019 | 12 | $773,568 | 5 | 1 | $968,397 |
| 2017 | 7 | $7.1M | 5 | – | – |
| 2016 | 1 | $3.5M | 1 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-11-13 | DOUGLAS RICHARD | Director | 200,000 | $0.64 | $128,900 | +103% | SEC |
| 2026-06-05 | Brady Todd C | CEO | 250,000 | $1.67 | $417,500 | +17.0% | SEC |
| 2026-03-20 | DOUGLAS RICHARD | Director | 70,000 | $1.40 | $98,000 | +56.0% | SEC |
| 2025-08-15 | Alfieri Michael | Officer | 2,500 | $5.30 | $13,250 | SEC | |
| 2024-10-21 | Miller-Rich Nancy | Director | 922 | $11.33 | $10,447 | SEC | |
| 2024-04-08 | EDELMAN JOSEPH | 10% Owner | 177,993 | $4.68 | $833,867 | +2.0% | SEC |
| 2024-04-03 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 504,272 | $3.84 | $1.9M | +5.9% | SEC |
| 2022-08-11 | PERCEPTIVE ADVISORS LLC | 10% Owner | 115,000 | $7.55 | $867,750 | +1.0% | SEC |
| 2022-08-10 | EDELMAN JOSEPH | 10% Owner | 97,000 | $7.24 | $702,280 | +0.9% | SEC |
| 2022-08-09 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 141,000 | $6.95 | $979,950 | +1.3% | SEC |
| 2022-08-08 | EDELMAN JOSEPH | 10% Owner | 95,100 | $6.17 | $586,767 | +0.9% | SEC |
| 2022-08-05 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 100,000 | $5.84 | $584,000 | +0.9% | SEC |
| 2022-08-04 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 412,406 | $5.59 | $2.3M | +4.0% | SEC |
| 2022-08-03 | PERCEPTIVE ADVISORS LLC | 10% Owner | 144,185 | $5.05 | $728,134 | +1.4% | SEC |
| 2022-08-02 | PERCEPTIVE ADVISORS LLC | 10% Owner | 222,123 | $5.03 | $1.1M | +2.2% | SEC |
| 2022-08-01 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 119,392 | $5.00 | $596,960 | +1.2% | SEC |
| 2022-06-27 | JOYCE MARTIN JOSEPH | Director | 4,323 | $3.48 | $15,044 | +22.0% | SEC |
| 2022-06-27 | Brady Todd C | CEO | 17,700 | $3.36 | $59,472 | +1.5% | SEC |
| 2021-05-04 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 1,200,000 | $12.50 | $15.0M | +13.8% | SEC |
| 2021-01-21 | EDELMAN JOSEPH | 10% Owner | 1,368,421 | $9.50 | $13.0M | +18.7% | SEC |
| 2021-01-11 | PERCEPTIVE ADVISORS LLC | 10% Owner | 1,050,000 | $8.76 | $9.2M | +16.7% | SEC |
| 2020-07-13 | PERCEPTIVE ADVISORS LLC | 10% Owner | 3,200,000 | $4.25 | $13.6M | +103.7% | SEC |
| 2020-03-17 | DOUGLAS RICHARD | Director | 40,000 | $2.75 | $110,000 | +47.1% | SEC |
| 2019-12-18 | Brady Todd C | CEO | 20,000 | $5.10 | $102,000 | +3.2% | SEC |
| 2019-10-02 | Brady Todd C | CEO | 8,710 | $5.68 | $49,473 | +1.4% | SEC |
| 2019-09-25 | Brady Todd C | CEO | 8,680 | $5.81 | $50,431 | +1.4% | SEC |
| 2019-09-20 | Brady Todd C | CEO | 14,288 | $5.91 | $84,442 | +2.4% | SEC |
| 2019-09-17 | DOUGLAS RICHARD | Director | 5,000 | $6.00 | $30,000 | +6.2% | SEC |
| 2019-09-17 | Brady Todd C | CEO | 13,000 | $5.85 | $75,990 | +2.2% | SEC |
| 2019-09-13 | DOUGLAS RICHARD | Director | 20,000 | $5.89 | $117,800 | +33.3% | SEC |
| 2019-09-11 | DOUGLAS RICHARD | Director | 20,000 | $5.00 | $100,000 | +50.0% | SEC |
| 2019-09-11 | Brady Todd C | CEO | 20,000 | $5.14 | $102,800 | +3.6% | SEC |
| 2019-09-10 | Clark David J | Officer | 5,000 | $5.06 | $25,300 | +38.8% | SEC |
| 2019-09-09 | Reed Joshua | CFO | 3,200 | $4.71 | $15,072 | +9.8% | SEC |
| 2019-09-09 | McMullin David | Officer | 4,329 | $4.68 | $20,260 | +238.0% | SEC |
| 2017-09-21 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 200,000 | $7.25 | $1.4M | +6.9% | SEC |
| 2017-07-05 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 296,007 | $4.60 | $1.4M | +11.4% | SEC |
| 2017-02-21 | Tulipano Stephen J | CFO | 3,333 | $4.50 | $14,998 | SEC | |
| 2017-02-21 | JOYCE MARTIN JOSEPH | Director | 4,444 | $4.50 | $19,998 | +32.9% | SEC |
| 2017-02-21 | DOUGLAS RICHARD | Director | 40,000 | $4.50 | $180,000 | SEC |
Showing the latest 40 of 43 purchases.
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2025-08-13 | Machatha Stephen | Officer | 22,073 | $5.15 | $113,676 | Sale | SEC |
| 2025-04-07 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 3,400,000 | $1.42 | $4.8M | Sale | SEC |
| 2024-08-14 | Machatha Stephen | Officer | 16,041 | $4.74 | $76,034 | Sale | SEC |
| 2024-08-14 | Greenberg Bruce | Officer | 10,834 | $4.74 | $51,353 | Sale | SEC |
| 2024-03-12 | Machatha Stephen | Officer | 29,768 | $3.31 | $98,625 | Sale | SEC |
| 2024-03-12 | Brady Todd C | CEO | 183,238 | $3.17 | $580,417 | Sale | SEC |
| 2023-10-18 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10% Owner | 2,756,499 | $1.62 | $4.5M | Sale | SEC |
| 2019-03-28 | TREU JESSE I | Director | 96,743 | $10.01 | $968,397 | Sale | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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