Michael Alfieri insider trades: Aldeyra Therapeutics (ALDX) stock purchases
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Michael reports to the SEC
Open-market buys and sales
2 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 13, 2025 | ALDX | ↑ Buy | 2,500 | $5.30 | $13K | Direct | Aug 15, 2025 (2d) |
| Sep 13, 2018 | GNCA | ↑ Buy | 10,000 | $0.54 | $5K | Direct | Sep 14, 2018 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ALDX insiders
Open-market trades in the last 12 months
About Michael Alfieri's insider trades
Michael Alfieri is Principal Financial Officer at Aldeyra Therapeutics (ALDX). Since Sep 13, 2018, Michael has reported 2 open-market purchases worth $19K and no sales on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ALDX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.