Aspen Neuroscience, Inc.
ASPE- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0002124080
In the last 90 days, Aspen Neuroscience, Inc. insiders filed 3 open-market purchases and 0 sales; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.
Holders of 5% or more of ASPE
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Aspen Neuroscience, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| ARCH Venture Fund X, L.P. | 13D | 12.90%3.75M shares | New | Nov 9, 20261 filing | Nov 9, 2026 | SEC |
| OrbiMed Advisors LLC | 13D | 12.30%3.59M shares | New | Nov 6, 20261 filing | Nov 6, 2026 | SEC |
| FMR LLC | 13G | 11.20%3.25M shares | New | Nov 6, 20261 filing | Nov 6, 2026 | SEC |
| Gilead Sciences, Inc. | 13G | 9.90%2.88M shares | New | Nov 6, 20261 filing | Nov 6, 2026 | SEC |
| Qatar Investment Authority | 13G | 6.70%1.93M shares | New | Nov 3, 20261 filing | Nov 3, 2026 | SEC |
| Frazier Life Sciences X, L.P. | 13G | 5.80%1.67M shares | New | Nov 9, 20261 filing | Nov 9, 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
6 Schedule 13D and 13G filings on Aspen Neuroscience, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 9, 20267:28 PM ET | ARCH Venture Fund X, L.P.and 12 others | 13D | 12.90%3.75M shares | New | Nov 2, 2026 | SEC |
| Nov 9, 20264:43 PM ET | Frazier Life Sciences X, L.P.and 4 others | 13G | 5.80%1.67M shares | New | Nov 2, 2026 | SEC |
| Nov 6, 20266:38 PM ET | OrbiMed Advisors LLCand 1 other | 13D | 12.30%3.59M shares | New | Nov 2, 2026 | SEC |
| Nov 6, 20265:34 PM ET | Gilead Sciences, Inc. | 13G | 9.90%2.88M shares | New | Oct 30, 2026 | SEC |
| Nov 6, 20269:45 AM ET | FMR LLCand 1 other | 13G | 11.20%3.25M shares | New | Oct 30, 2026 | SEC |
| Nov 3, 20269:17 AM ET | Qatar Investment Authority | 13G | 6.70%1.93M shares | New | Oct 30, 2026 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Aspen Neuroscience, Inc. shares.
No Form 144 notices for Aspen Neuroscience, Inc. are on file.