MD
Michael A / Davis
Director10% Owner
Michael A / DavisDirector10% Owner
Michael A / Davis insider trades: Cyanotech (CYAN) stock purchases
Director, Cyanotech Last trade Oct 1, 2024 101 Form 4 filings
$0
Sold, last 12 months
0 sales
$0
Bought, last 12 months
0 buys
72
Open-market trades
since 2010
2
Companies
last trade 2024
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Michael reports to the SEC
CYANCyanotech
Director · last filing Sep 2, 2025
+$2.4M
CYAN)Cyanotech
Director · last filing Mar 16, 2011
+$57K
Open-market buys and sales
72 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 1, 2024 | CYAN | ↑ Buy | 5,000 | $0.76 | $4K | By self as trustee of the Michael Arlen | Oct 3, 2024 (2d) |
| Sep 30, 2024 | CYAN | ↑ Buy | 10,000 | $0.77 | $8K | By self as trustee of the Michael Arlen | Oct 1, 2024 (1d) |
| Sep 26, 2024 | CYAN | ↑ Buy | 10,000 | $0.77 | $8K | By self as trustee of the Michael Arlen | Sep 27, 2024 (1d) |
| Sep 24, 2024 | CYAN | ↑ Buy | 10,000 | $0.75 | $8K | By self as trustee of the Michael Arlen | Sep 25, 2024 (1d) |
| Sep 20, 2024 | CYAN | ↑ Buy | 10,000 | $0.76 | $8K | By self as trustee of the Michael Arlen | Sep 23, 2024 (3d) |
| Sep 18, 2024 | CYAN | ↑ Buy | 10,000 | $0.76 | $8K | By self as trustee of the Michael Arlen | Sep 19, 2024 (1d) |
| Sep 16, 2024 | CYAN | ↑ Buy | 10,000 | $0.82 | $8K | By self as trustee of the Michael Arlen | Sep 17, 2024 (1d) |
| Sep 12, 2024 | CYAN | ↑ Buy | 10,000 | $0.83 | $8K | By self as trustee of the Michael Arlen | Sep 13, 2024 (1d) |
| Sep 10, 2024 | CYAN | ↑ Buy | 10,000 | $0.83 | $8K | By self as trustee of the Michael Arlen | Sep 11, 2024 (1d) |
| Sep 6, 2024 | CYAN | ↑ Buy | 10,000 | $0.84 | $8K | By self as trustee of the Michael Arlen | Sep 9, 2024 (3d) |
| Sep 4, 2024 | CYAN | ↑ Buy | 10,000 | $0.82 | $8K | By self as trustee of the Michael Arlen | Sep 5, 2024 (1d) |
| Aug 30, 2024 | CYAN | ↑ Buy | 10,000 | $0.77 | $8K | By self as trustee of the Michael Arlen | Sep 3, 2024 (4d) |
| Aug 28, 2024 | CYAN | ↑ Buy | 10,000 | $0.80 | $8K | By self as trustee of the Michael Arlen | Aug 29, 2024 (1d) |
| Aug 26, 2024 | CYAN | ↑ Buy | 10,000 | $0.81 | $8K | By self as trustee of the Michael Arlen | Aug 27, 2024 (1d) |
| Aug 22, 2024 | CYAN | ↑ Buy | 10,000 | $0.76 | $8K | By self as trustee of the Michael Arlen | Aug 23, 2024 (1d) |
| Aug 20, 2024 | CYAN | ↑ Buy | 10,000 | $0.88 | $9K | By self as trustee of the Michael Arlen | Aug 21, 2024 (1d) |
| Aug 16, 2024 | CYAN | ↑ Buy | 10,000 | $0.80 | $8K | By self as trustee of the Michael Arlen | Aug 19, 2024 (3d) |
| Aug 14, 2024 | CYAN | ↑ Buy | 10,000 | $0.72 | $7K | By self as trustee of the Michael Arlen | Aug 15, 2024 (1d) |
| Aug 12, 2024 | CYAN | ↑ Buy | 10,000 | $0.77 | $8K | By self as trustee of the Michael Arlen | Aug 13, 2024 (1d) |
| Aug 8, 2024 | CYAN | ↑ Buy | 10,000 | $0.72 | $7K | By self as trustee of the Michael Arlen | Aug 9, 2024 (1d) |
| Aug 6, 2024 | CYAN | ↑ Buy | 10,000 | $0.79 | $8K | By self as trustee of the Michael Arlen | Aug 7, 2024 (1d) |
| Aug 2, 2024 | CYAN | ↑ Buy | 10,000 | $0.81 | $8K | By self as trustee of the Michael Arlen | Aug 5, 2024 (3d) |
| Jul 31, 2024 | CYAN | ↑ Buy | 10,000 | $0.77 | $8K | By self as trustee of the Michael Arlen | Aug 1, 2024 (1d) |
| Jul 29, 2024 | CYAN | ↑ Buy | 10,000 | $0.64 | $6K | By self as trustee of the Michael Arlen | Jul 30, 2024 (1d) |
| Jul 25, 2024 | CYAN | ↑ Buy | 10,000 | $0.62 | $6K | By self as trustee of the Michael Arlen | Jul 26, 2024 (1d) |
| Jul 23, 2024 | CYAN | ↑ Buy | 10,000 | $0.58 | $6K | By self as trustee of the Michael Arlen | Jul 24, 2024 (1d) |
| Jul 19, 2024 | CYAN | ↑ Buy | 10,000 | $0.58 | $6K | By self as trustee of the Michael Arlen | Jul 22, 2024 (3d) |
| Jul 17, 2024 | CYAN | ↑ Buy | 10,000 | $0.58 | $6K | By self as trustee of the Michael Arlen | Jul 18, 2024 (1d) |
| Jul 15, 2024 | CYAN | ↑ Buy | 10,000 | $0.54 | $5K | By self as trustee of the Michael Arlen | Jul 16, 2024 (1d) |
| Jul 11, 2024 | CYAN | ↑ Buy | 10,000 | $0.42 | $4K | By self as trustee of the Michael Arlen | Jul 12, 2024 (1d) |
| Jul 9, 2024 | CYAN | ↑ Buy | 10,000 | $0.35 | $4K | By self as trustee of the Michael Arlen | Jul 10, 2024 (1d) |
| Jul 5, 2024 | CYAN | ↑ Buy | 10,000 | $0.39 | $4K | By self as trustee of the Michael Arlen | Jul 8, 2024 (3d) |
| Dec 15, 2023 | CYAN | ↑ Buy | 400,000 | $1.00 | $400K | By self as trustee of the Michael Arlen | Dec 19, 2023 (4d) |
| Dec 1, 2023 | CYAN | ↑ Buy | 39,455 | $0.90 | $36K | By self as trustee of the Michael Arlen | Dec 4, 2023 (3d) |
| Sep 15, 2023 | CYAN | ↑ Buy | 3,245 | $0.84 | $3K | By self as trustee of the Michael Arlen | Sep 18, 2023 (3d) |
| Sep 14, 2023 | CYAN | ↑ Buy | 5,498 | $0.83 | $5K | By self as trustee of the Michael Arlen | Sep 14, 2023 (0d) |
| Sep 12, 2023 | CYAN | ↑ Buy | 399 | $0.82 | $326 | By self as trustee of the Michael Arlen | Sep 12, 2023 (0d) |
| Sep 8, 2023 | CYAN | ↑ Buy | 20,453 | $0.75 | $15K | By self as trustee of the Michael Arlen | Sep 8, 2023 (0d) |
| Sep 6, 2023 | CYAN | ↑ Buy | 18,520 | $0.67 | $12K | By self as trustee of the Michael Arlen | Sep 7, 2023 (1d) |
| Nov 30, 2021 | CYAN | ↑ Buy | 18,000 | $3.51 | $63K | By self as trustee for Nettizanne Johnst | Dec 1, 2021 (1d) |
| Nov 30, 2021 | CYAN | ↑ Buy | 18,000 | $3.51 | $63K | By self as trustee for Nyracai Johnstone | Dec 1, 2021 (1d) |
| Nov 23, 2020 | CYAN | ↑ Buy | 21,845 | $2.58 | $56K | By self as trustee for Nyracai Johnstone | Nov 25, 2020 (2d) |
| Nov 23, 2020 | CYAN | ↑ Buy | 20,000 | $2.58 | $52K | By self as trustee for Nettizanne Johnst | Nov 25, 2020 (2d) |
| Sep 10, 2020 | CYAN | ↑ Buy | 1,816 | $2.90 | $5K | By self as trustee for Nettizanne Johnst | Sep 11, 2020 (1d) |
| Sep 10, 2020 | CYAN | ↑ Buy | 650 | $2.86 | $2K | By self as trustee for Nyracai Johnstone | Sep 11, 2020 (1d) |
| Sep 8, 2020 | CYAN | ↑ Buy | 4,896 | $2.78 | $14K | By self as trustee for Nyracai Johnstone | Sep 9, 2020 (1d) |
| Sep 8, 2020 | CYAN | ↑ Buy | 1,268 | $2.63 | $3K | By self as trustee for Nettizanne Johnst | Sep 9, 2020 (1d) |
| Sep 2, 2020 | CYAN | ↑ Buy | 10,000 | $2.74 | $27K | By self as trustee for Nettizanne Johnst | Sep 4, 2020 (2d) |
| Sep 2, 2020 | CYAN | ↑ Buy | 6,691 | $2.73 | $18K | By self as trustee for Nyracai Johnstone | Sep 4, 2020 (2d) |
| Sep 1, 2020 | CYAN | ↑ Buy | 6,916 | $2.43 | $17K | By self as trustee for Nettizanne Johnst | Sep 2, 2020 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Michael A / Davis's insider trades
Michael A / Davis is a director at Cyanotech (CYAN). Since Aug 18, 2010, Michael has reported 72 open-market purchases worth $2.4M and no sales on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (35 filings), gifts (5 filings), option exercises (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every CYAN insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.