Aldeyra Therapeutics, Inc.
ALDX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001341235
No open-market purchases or sales by Aldeyra Therapeutics, Inc. insiders were filed in the last 90 days; 107 institutions reported holding it in 13F filings for Q2 2026, worth $77.7M in total; no superinvestor holds it.
Holders of 5% or more of ALDX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Aldeyra Therapeutics, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| AQR Capital Management LLC | 13G | 6.22%3.75M shares | New | Aug 12, 20261 filing | Aug 12, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
18 Schedule 13D and 13G filings on Aldeyra Therapeutics, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 12, 202610:48 AM ET | AQR Capital Management LLCand 1 other | 13G | 6.22%3.75M shares | New | Jun 30, 2026 | SEC |
| Jul 27, 20264:25 PM ET | BlackRock, Inc. | 13G/A | 1.70%1.05M shares | –Below 5% | Jun 30, 2026 | SEC |
| May 15, 20264:00 PM ET | Perceptive Advisors LLCand 2 others | 13G/A | 0.00%0 shares | −7.00 ppfrom 7.00%Below 5% | Mar 31, 2026 | SEC |
| Mar 26, 20263:26 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 20264:00 PM ET | Perceptive Advisors LLCand 2 others | 13G/A | 7.00%4.19M shares | −1.70 ppfrom 8.70% | Dec 31, 2025 | SEC |
| Nov 14, 20254:00 PM ET | Perceptive Advisors LLCand 2 others | 13G/A | 8.70%5.22M shares | +1.90 ppfrom 6.80% | Sep 30, 2025 | SEC |
| Aug 14, 20254:21 PM ET | Perceptive Advisors LLCand 2 others | 13G/A | 6.80%4.05M shares | −1.40 ppfrom 8.20% | Jun 30, 2025 | SEC |
| Apr 7, 20256:52 PM ET | Perceptive Advisors LLCand 2 others | 13G/A | 8.20%4.88M shares | – | Apr 3, 2025 | SEC |
| Feb 14, 2023 | Perceptive Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 3, 2023 | State Street Corp | 13G/AOld format | – | – | – | SEC |
| Jul 8, 20224:56 PM ET | BlackRock Inc. | 13GOld format | – | – | – | SEC |
| Feb 14, 2022 | Perceptive Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | State Street Corp | 13GOld format | – | New | – | SEC |
| Feb 4, 20224:12 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
| Jan 4, 2022 | Domain Partners VI, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Perceptive Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | 683 Capital Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Prosight Management, LP | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Aldeyra Therapeutics, Inc. shares.
No Form 144 notices for Aldeyra Therapeutics, Inc. are on file.