Cyanotech Corp
CYAN- Exchange
- OTC
- Industry
- Medicinal Chemicals & Botanical Products
- SEC CIK
- 0000768408
No open-market purchases or sales by Cyanotech Corp 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 CYAN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Cyanotech Corp, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Cyanotech Corp 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
11 Schedule 13D and 13G filings on Cyanotech Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 3, 2024 | Davis Michael A | 13D/AOld format | – | – | – | SEC |
| Sep 12, 2024 | Davis Michael A | 13D/AOld format | – | – | – | SEC |
| Sep 6, 2024 | Davis Michael A | 13D/AOld format | – | – | – | SEC |
| Aug 15, 2024 | Davis Michael A | 13D/AOld format | – | – | – | SEC |
| Jul 26, 2024 | Davis Michael A | 13D/AOld format | – | – | – | SEC |
| Dec 20, 2023 | Davis Michael A | 13D/AOld format | – | – | – | SEC |
| Aug 30, 2023 | Ginungagap Foundation | 13D/AOld format | – | – | – | SEC |
| Aug 29, 2023 | Davis Michael A | 13D/AOld format | – | – | – | SEC |
| Aug 29, 2023 | Ginungagap Foundation | 13DOld format | – | New | – | SEC |
| Apr 2, 2021 | Meridian OHC Partners, LP | 13D/AOld format | – | – | – | SEC |
| Mar 10, 2021 | Wells Fargo & Company | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Cyanotech Corp shares.
No Form 144 notices for Cyanotech Corp are on file.