Through the 90-day period concluding December 12, 2025, Aldeyra Therapeutics's top three insider stakeholders include TenPercentOwner Advisors Llc Perceptive (5.88Mn shares), Chief Development Officer Stephen Machatha (221.80K shares), Principal Financial Officer Michael Alfieri (2.50K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Advisors Llc Perceptive | 5,875,851 | 07 Apr, 2025 | |
| Todd C Brady | President And CEO | 1,471,298 | 12 Mar, 2024 |
| Joshua Reed | Chief Financial Officer | 274,825 | 01 Apr, 2022 |
| Stephen Machatha | Chief Development Officer | 221,799 | 13 Aug, 2025 |
| Bruce Greenberg | 126,382 | 14 Aug, 2024 | |
| Ben Bronstein | 28,248 | 29 Jun, 2023 | |
| Martin Joseph Joyce | 23,967 | 27 Jun, 2022 | |
| Neal Walker | 15,854 | 24 Aug, 2023 | |
| Gary M. Phillips | 14,812 | 11 Sep, 2023 | |
| Michael Alfieri | Principal Financial Officer | 2,500 | 15 Aug, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 13 Aug, 2025 | Michael Alfieri | Common Stock | A | 2,500 | $5.30 | 2,500 | D | P |
| 11 Aug, 2025 | Stephen Machatha | Common Stock | D | 22,073 | $5.15 | 221,799 | D | S |
| 03 Apr, 2025 | Advisors Llc Perceptive | - | - | 5,875,851 | I | |||
| 03 Apr, 2025 | Advisors Llc Perceptive | Common Stock | D | 3,400,000 | $1.42 | 5,875,851 | I | S |
| 12 Aug, 2024 | Bruce Greenberg | Common Stock | D | 10,834 | $4.74 | 126,382 | D | S |
| 12 Aug, 2024 | Stephen Machatha | Common Stock | D | 16,041 | $4.74 | 236,771 | D | S |
| 12 Aug, 2024 | Bruce Greenberg | - | - | 126,382 | D | |||
| 04 Apr, 2024 | Advisors Llc Perceptive | Common Stock | A | 140,281 | $4.67 | 9,238,139 | I | P |
| 05 Apr, 2024 | Advisors Llc Perceptive | Common Stock | A | 37,712 | $4.74 | 9,275,851 | I | P |
| 01 Apr, 2024 | Advisors Llc Perceptive | - | - | 8,601,960 | I | |||
| 01 Apr, 2024 | Advisors Llc Perceptive | Common Stock | A | 8,374 | $3.25 | 8,601,960 | I | P |
| 02 Apr, 2024 | Advisors Llc Perceptive | Common Stock | A | 186,051 | $3.44 | 8,788,011 | I | P |
| 02 Apr, 2024 | Advisors Llc Perceptive | - | - | 8,788,011 | I | |||
| 03 Apr, 2024 | Advisors Llc Perceptive | Common Stock | A | 309,847 | $4.09 | 9,097,858 | I | P |
| 03 Apr, 2024 | Advisors Llc Perceptive | - | - | 9,097,858 | I | |||
| 12 Mar, 2024 | Stephen Machatha | Common Stock | D | 11,537 | $3.16 | 252,812 | D | S |
| 11 Mar, 2024 | Bruce Greenberg | Common Stock | D | 13,201 | $3.41 | 130,154 | D | S |
| 11 Mar, 2024 | Stephen Machatha | Common Stock | D | 18,231 | $3.41 | 255,032 | D | S |
| 11 Mar, 2024 | Bruce Greenberg | Common Stock | D | 13,201 | $3.41 | 120,699 | D | S |
| 11 Mar, 2024 | Todd C Brady | - | - | 1,556,622 | D |