CYAN
insider transactionsCYANOTECH CORP — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
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Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
CFO, VP Fin & Admin, Treasurer
$0
50.0K sh
Own New
-
Grant·A
Director
$0
50.0K sh
Own +29%
-
Grant·A
Director
$0
50.0K sh
Own +33%
-
Grant·A
Director,TenPercentOwner
$0
50.0K sh
Own +3%
-
Exercise·M
VP, Quality, Regulatory & Govt
$0
1.4K sh
Own New
-
Other·F
VP, Quality, Regulatory & Govt
$212
518 sh · $0.41
Own -5%
-
Exercise·M
VP, Quality, Regulatory & Govt
$0
1.4K sh
Own +16%
-
Exercise·M
VP, Operations
$0
1.6K sh
Own New
-
Other·F
VP, Operations
$253
617 sh · $0.41
Own -2%
-
Exercise·M
VP, Operations
$0
1.6K sh
Own +6%
-
Exercise·M
President and CEO
$0
2.1K sh
Own +3%
-
Exercise·M
President and CEO
$0
2.1K sh
Own +44%
-
Exercise·M
VP, HR, Secretary
$0
1.5K sh
Own New
-
Other·F
VP, HR, Secretary
$215
525 sh · $0.41
Own -5%
-
Exercise·M
VP, HR, Secretary
$0
1.5K sh
Own +19%
-
Exercise·M
Other
$0
1.6K sh
Own New
-
Other·F
Other
$243
592 sh · $0.41
Own -0%
-
Exercise·M
Other
$0
1.6K sh
Own +1%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Sep 12, 2025 | Miyashiro Jennifer A.S. KEY | Grant A | 50.0K | $0 |
| Aug 28, 2025 | Vied David L | Grant A | 50.0K | $0 |
| Aug 28, 2025 | MULDER DAVID M | Grant A | 50.0K | $0 |
| Aug 28, 2025 | DAVIS MICHAEL A / | Grant A | 50.0K | $0 |
| Jul 29, 2025 | Johansen Jennifer M. | Exercise M | 1.4K | $0 |
| Jul 29, 2025 | Johansen Jennifer M. | Other F | 518 | $212 |
| Jul 29, 2025 | Johansen Jennifer M. | Exercise M | 1.4K | $0 |
| Jul 29, 2025 | Jensen Glenn | Exercise M | 1.6K | $0 |
| Jul 29, 2025 | Jensen Glenn | Other F | 617 | $253 |
| Jul 29, 2025 | Jensen Glenn | Exercise M | 1.6K | $0 |
| Jul 29, 2025 | Custer Matthew Keith KEY | Exercise M | 2.1K | $0 |
| Jul 29, 2025 | Custer Matthew Keith KEY | Exercise M | 2.1K | $0 |
| Jul 29, 2025 | Nordin Amy Beth | Exercise M | 1.5K | $0 |
| Jul 29, 2025 | Nordin Amy Beth | Other F | 525 | $215 |
| Jul 29, 2025 | Nordin Amy Beth | Exercise M | 1.5K | $0 |
| Jul 29, 2025 | Cysewski Gerald R | Exercise M | 1.6K | $0 |
| Jul 29, 2025 | Cysewski Gerald R | Other F | 592 | $243 |
| Jul 29, 2025 | Cysewski Gerald R | Exercise M | 1.6K | $0 |
About CYAN insider trading
This page tracks insider transactions for CYANOTECH CORP (CYAN) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.