CNS Pharmaceuticals, Inc.
CNSP- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001729427
In the last 90 days, CNS Pharmaceuticals, Inc. insiders filed 1 open-market purchase and 0 sales; 11 institutions reported holding it in 13F filings for Q2 2026, worth $1.34M in total; no superinvestor holds it.
Holders of 5% or more of CNSP
Holders whose latest Schedule 13D or 13G filing reports 5% or more of CNS Pharmaceuticals, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Stonepine Capital Management, LLC | 13G/A | 9.90%159.8K shares | +2.00 ppfrom 7.90% | Nov 4, 20253 filings | May 15, 2026 | SEC |
| Ikarian Capital, LLC | 13G/A | 9.90%147.3K shares | +4.20 ppfrom 5.70% | Apr 17, 20262 filings | Aug 14, 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
7 Schedule 13D and 13G filings on CNS Pharmaceuticals, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20269:25 PM ET | Ikarian Capital, LLCand 1 other | 13G/A | 9.90%147.3K shares | +4.20 ppfrom 5.70% | Jun 30, 2026 | SEC |
| May 15, 20265:10 PM ET | Stonepine Capital Management, LLCand 3 others | 13G/A | 9.90%159.8K shares | +2.00 ppfrom 7.90% | Mar 31, 2026 | SEC |
| Apr 17, 20264:57 PM ET | Ikarian Capital, LLCand 1 other | 13G | 5.70%45.8K shares | New | Dec 31, 2025 | SEC |
| Feb 13, 20265:02 PM ET | Stonepine Capital Management, LLCand 3 others | 13G/A | 7.90%48.8K shares | +2.30 ppfrom 5.60% | Dec 31, 2025 | SEC |
| Nov 14, 20256:40 PM ET | Armistice Capital, LLCand 1 other | 13G/A | 4.99%30.2K shares | −5.00 ppfrom 9.99%Below 5% | Sep 30, 2025 | SEC |
| Nov 4, 202512:19 PM ET | Stonepine Capital Management, LLCand 3 others | 13G | 5.60%32.2K shares | New | Oct 29, 2025 | SEC |
| Aug 14, 20258:56 PM ET | Armistice Capital, LLCand 1 other | 13G | 9.99%561.1K shares | New | Jun 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell CNS Pharmaceuticals, Inc. shares.
No Form 144 notices for CNS Pharmaceuticals, Inc. are on file.