Protagenic Therapeutics, Inc.
PTIX- Exchange
- OTC
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001022899
In the last 90 days, Protagenic Therapeutics, Inc. insiders filed 7 open-market purchases and 0 sales; 2 institutions reported holding it in 13F filings for Q2 2026, worth $25.4K in total; no superinvestor holds it.
Holders of 5% or more of PTIX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Protagenic Therapeutics, Inc., largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Protagenic Therapeutics, Inc. on Schedule 13D or 13G.
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
3 Schedule 13D and 13G filings on Protagenic Therapeutics, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 25, 20254:07 PM ET | Bigger Capital Fund L Pand 2 others | 13G/A | 0.00%0 shares | −5.75 ppfrom 5.75%Below 5% | Aug 22, 2025 | SEC |
| Jul 8, 20254:20 PM ET | Bigger Capital Fund L Pand 2 others | 13G | 5.75%50.0K shares | New | Jul 2, 2025 | SEC |
| Feb 14, 20255:06 PM ET | Armistice Capital, LLCand 1 other | 13G/A | 3.41%240.0K shares | –Below 5% | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Protagenic Therapeutics, Inc. shares.
No Form 144 notices for Protagenic Therapeutics, Inc. are on file.