Douglas Richard insider trades
Douglas Richard has filed 23 Form 4s with the SEC that we hold, for Maxcyte, INC. (MXCT) (Director), Novavax INC (NVAX) (Director) and Aldeyra Therapeutics, Inc. (ALDX) (Director). Across all of them we count 4 purchases worth $777.2K and 0 sales worth $0 reported on Form 4. In the last 12 months: 1 purchase ($98.0K) and 0 sales ($0). The largest single trade was a purchase of 80,000 shares of Maxcyte, INC. worth $345.6K, dated 2023-03-29. The first filing on our record is dated 2021-08-11 and the latest 2026-06-23.
Maxcyte, INC. (MXCT)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2021-11-22 | P, purchase reported on Form 4 | 20,000 | $222.4K | 2021-11-23 |
| 2023-03-29 | P, purchase reported on Form 4 | 80,000 | $345.6K | 2023-03-30 |
| 2025-08-13 | P, purchase reported on Form 4 | 80,000 | $111.2K | 2025-08-13 |
Novavax INC (NVAX)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Aldeyra Therapeutics, Inc. (ALDX)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2026-03-19 | P, purchase reported on Form 4 | 70,000 | $98.0K | 2026-03-20 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1021015) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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