Adaptin Bio, Inc.
APTN- Exchange
- OTC
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001938571
No open-market purchases or sales by Adaptin Bio, Inc. insiders were filed in the last 90 days; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.
Holders of 5% or more of APTN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Adaptin Bio, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Roberts Michael J | 13D | 26.70%2.16M shares | New | Feb 18, 20251 filing | Feb 18, 2025 | SEC |
| Pedder Simon | 13D | 11.50%928.6K shares | New | Feb 18, 20251 filing | Feb 18, 2025 | 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
2 Schedule 13D and 13G filings on Adaptin Bio, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Feb 18, 20256:47 PM ET | Roberts Michael J | 13D | 26.70%2.16M shares | New | Feb 11, 2025 | SEC |
| Feb 18, 20256:45 PM ET | Pedder Simon | 13D | 11.50%928.6K shares | New | Feb 11, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Adaptin Bio, Inc. shares.
No Form 144 notices for Adaptin Bio, Inc. are on file.