Aldeyra Therapeutics (ALDX) stock: insider trades, news & valuation
Net buyingShare price and insider trades
Aldeyra Therapeutics insider trading at a glance (Oct 9, 2026): in the past 12 months, 2 insiders bought $516K and 0 sold $0 of ALDX stock on the open market.
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ALDX insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | $418K | 1 | — | 0 |
| Q1 2026 | $105K | 2 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 2 Aldeyra Therapeutics, Inc. insiders reported open-market purchases totaling $516K, while 0 insiders reported sales totaling $0.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Jun 5SEC | Todd C BradyCEO, President | Buy | 250,0001,721,298 held (+17%) | $1.67 | $418K | -45.1% | — |
| Mar 20SEC | Richard DouglasDirector | Buy | 70,000195,000 held (+56%) | $1.40 | $98K | -34.6% | — |
| Mar 19SEC | Michael AlfieriPrincipal Financial Officer | Buy | 5,0007,500 held (+200%) | $1.42 | $7K | -35.5% | — |
Insiders at Aldeyra Therapeutics, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Todd C BradyCEO, President | $418K | — | Jun 5, 2026 | — |
| Richard DouglasDirector | $98K | — | Mar 20, 2026 | — |
| Michael AlfieriPrincipal Financial Officer | $7K | — | Mar 19, 2026 | — |
ALDX stock: common questions
Are Aldeyra Therapeutics, Inc. insiders buying ALDX stock?
In the past 12 months, 2 insiders reported open-market purchases of ALDX worth $516K. The latest was CEO, President Todd C Brady bought $418K of ALDX at $1.67 — first open-market purchase in our records.
Are Aldeyra Therapeutics, Inc. insiders selling ALDX stock?
0 insiders reported sales worth $0 over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ALDX's 52-week range?
Over the past year ALDX has traded between $0.92 and $5.67. It last closed at $0.92 on Oct 9, 2026.