ALDXHealthcareMicro-Cap
Aldeyra Therapeutics, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Aldeyra Therapeutics, Inc. (ALDX), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are ALDX insiders buying or selling?
Aldeyra Therapeutics, Inc. insiders reported 38 open-market buys ($63.7M) and 11 sells ($11.3M) across 49 Form 4 filings — a net buying position of $52.4M.
Source: SEC EDGAR Form 4
Key Statistics (as of Jun 5, 2026)
Total Form 4 filings
49
SEC EDGAR
Insider filers
13
Insider buys (38)
$63.7M
Insider sells (11)
$11.3M
Insider sentiment
Net buyingNet insider flow of $52.4M in net buying. 1 insider buy in the last 90 days.
Recent ALDX insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 5, 2026 | Todd C Brady | President and CEO | Purchase | 250.0K | $1.67 | $418.4K |
| Mar 20, 2026 | DOUGLAS RICHARD | Director | Purchase | 70.0K | $1.40 | $98.0K |
| Mar 19, 2026 | Michael Alfieri | Principal Financial Officer | Purchase | 5.0K | $1.42 | $7.1K |
| Aug 15, 2025 | Michael Alfieri | Principal Financial Officer | Purchase | 2.5K | $5.30 | $13.3K |
| Aug 13, 2025 | Stephen Machatha | Chief Development Officer | Sale | 22.1K | $5.15 | $113.7K |
| Apr 7, 2025 | Joseph Edelman | 10% Owner | Sale | 3.4M | $1.42 | $4.8M |
| Oct 22, 2024 | Nancy Miller-Rich | Director | Purchase | 922 | $11.33 | $10.4K |
| Aug 14, 2024 | Stephen Machatha | Chief Development Officer | Sale | 16.0K | $4.74 | $76.0K |
| Aug 14, 2024 | Bruce Greenberg | Interim Chief Financial Officer | Sale | 10.8K | $4.74 | $51.3K |
| Apr 17, 2024 | Stephen Machatha | Chief Development Officer | Sale | 11.5K | $3.16 | $36.5K |
| Apr 17, 2024 | Bruce Greenberg | Interim Chief Financial Officer | Sale | 13.2K | $3.41 | $45.0K |
| Apr 8, 2024 | Joseph Edelman | 10% Owner | Purchase | 178.0K | $4.68 | $833.9K |
| Apr 3, 2024 | Joseph Edelman | 10% Owner | Purchase | 504.3K | $3.84 | $1.9M |
| Mar 13, 2024 | Bruce Greenberg | Interim Chief Financial Officer | Sale | 13.2K | $3.41 | $45.0K |
| Mar 13, 2024 | Stephen Machatha | Chief Development Officer | Sale | 29.8K | $3.31 | $98.6K |
| Mar 13, 2024 | Todd C Brady | President and CEO | Sale | 183.2K | $3.17 | $580.8K |
| Oct 18, 2023 | Joseph Edelman | 10% Owner | Sale | 2.8M | $1.62 | $4.5M |
| Aug 11, 2022 | Joseph Edelman | 10% Owner | Purchase | 115.0K | $7.55 | $867.8K |
| Aug 10, 2022 | Joseph Edelman | 10% Owner | Purchase | 97.0K | $7.24 | $702.3K |
| Aug 9, 2022 | Joseph Edelman | 10% Owner | Purchase | 141.0K | $6.95 | $980.0K |
| Aug 8, 2022 | Joseph Edelman | 10% Owner | Purchase | 95.1K | $6.17 | $586.8K |
| Aug 5, 2022 | Joseph Edelman | 10% Owner | Purchase | 100.0K | $5.84 | $584.0K |
| Aug 4, 2022 | Joseph Edelman | 10% Owner | Purchase | 412.4K | $5.59 | $2.3M |
| Aug 3, 2022 | Joseph Edelman | 10% Owner | Purchase | 144.2K | $5.05 | $728.1K |
| Aug 2, 2022 | Joseph Edelman | 10% Owner | Purchase | 222.1K | $5.03 | $1.1M |
Showing the 25 most recent of 49 Form 4 filings for Aldeyra Therapeutics, Inc..
Most active ALDX insiders
- Joseph Edelman17 filings
- Todd C Brady10 filings
- DOUGLAS RICHARD5 filings
- Stephen Machatha4 filings
- Bruce Greenberg3 filings
Ask anything about ALDX insider activity
Use Trabud's AI agent to query Aldeyra Therapeutics, Inc.'s Form 4 history in plain English — "Show me ALDX CEO purchases this year" or compare it against any other ticker.
Open the AI agentALDX insider trading FAQ
Are Aldeyra Therapeutics, Inc. insiders buying or selling?
Across 49 SEC Form 4 filings, Aldeyra Therapeutics, Inc. (ALDX) insiders reported 38 open-market purchases totaling $63.7M and 11 sales totaling $11.3M. That is a net buying position of $52.4M.
How many insiders trade ALDX stock?
13 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Aldeyra Therapeutics, Inc.. The most recent filing was accepted on Jun 5, 2026.
Where does Trabud get ALDX insider trading data?
All ALDX insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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