NASDAQ:CYAN

Cyanotech Stock Insider Trading

Consumer Defensive > Packaged Foods

Buy CYAN

*Your capital is at risk

$0.440

+0 (+0%)

At Close: Jun 03, 2026

Cyanotech Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 98.28. In total, the insiders bought 1.2M and sold 11.38K CYAN shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	98.28
● Buy	1.2M shares
● Sell	11.38K shares
77% Buy Activity Negligible or No Correlation
Sell Signal Low Confidence Mar 24, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 98.28. Confidence increased due to high data reliability score of 90.

Historical Insider Trades

Date	Type	Person	Role	Amount
Sep 12, 2025 Buy	Cyanotech Common Stock Options A-Award	Miyashiro Jennifer A.s. CFO, Vp Fin & Admin, Treasurer	C-Suite Officer	50 000 Value: $14.5K
Sep 12, 2025 Buy	Cyanotech Common Stock Options A-Award	Miyashiro Jennifer A.s. CFO, Vp Fin & Admin, Treasurer	C-Suite Officer	50 000 Value: $14.5K
Aug 28, 2025 Buy	Cyanotech Corporation Common Stock A-Award	Mulder David M Director	Director	50 000 Value: $14.0K
Aug 28, 2025 Buy	Cyanotech Corporation Common Stock A-Award	Vied David L Director	Director	50 000 Value: $14.0K
Aug 28, 2025 Buy	Cyanotech Corporation Common Stock A-Award	Davis Michael A /	Director	50 000 Value: $14.0K
Aug 28, 2025 Buy	Cyanotech Corporation Common Stock A-Award	Davis Michael A /	Director	50 000 Value: $14.0K
Aug 28, 2025 Buy	Cyanotech Corporation Common Stock A-Award	Vied David L Director	Director	50 000 Value: $14.0K
Aug 28, 2025 Buy	Cyanotech Corporation Common Stock A-Award	Mulder David M Director	Director	50 000 Value: $14.0K
Aug 21, 2025 Buy	Common Stock J-Other	Miyashiro Jennifer A.s. Officer	Officer	0 Value: $0
Aug 21, 2025 Buy	Common Stock J-Other	Miyashiro Jennifer A.s. Officer	Officer	0 Value: $0
Jul 29, 2025 Buy	Restricted Stock Units M-Exempt	Custer Matthew Keith President And CEO	CEO / President	2 075 Value: $789
Jul 29, 2025 Buy	Common Stock M-Exempt	Custer Matthew Keith President And CEO	CEO / President	2 075 Value: $789
Jul 29, 2025 Buy	Common Stock M-Exempt	Nordin Amy Beth Vp, Hr, Secretary	Officer	1 502 Value: $571
Jul 29, 2025 Sell	Common Stock F-InKind	Nordin Amy Beth Vp, Hr, Secretary	Officer	525 Value: $213
Jul 29, 2025 Buy	Restricted Stock Units M-Exempt	Nordin Amy Beth Vp, Hr, Secretary	Officer	1 502 Value: $571
Jul 29, 2025 Buy	Common Stock M-Exempt	Johansen Jennifer M. Vp, Quality, Regulatory & Govt	Officer	1 380 Value: $524
Jul 29, 2025 Sell	Common Stock F-InKind	Johansen Jennifer M. Vp, Quality, Regulatory & Govt	Officer	518 Value: $210
Jul 29, 2025 Buy	Restricted Stock Units M-Exempt	Johansen Jennifer M. Vp, Quality, Regulatory & Govt	Officer	1 380 Value: $524
Jul 29, 2025 Buy	Common Stock M-Exempt	Cysewski Gerald R Chief Scientific Officer	Officer	1 577 Value: $599
Jul 29, 2025 Sell	Common Stock F-InKind	Cysewski Gerald R Chief Scientific Officer	Officer	592 Value: $240
Jul 29, 2025 Buy	Restricted Stock Units M-Exempt	Cysewski Gerald R Chief Scientific Officer	Officer	1 577 Value: $599
Jul 29, 2025 Buy	Common Stock M-Exempt	Jensen Glenn Vp, Operations	Officer	1 642 Value: $624
Jul 29, 2025 Sell	Common Stock F-InKind	Jensen Glenn Vp, Operations	Officer	617 Value: $250
Jul 29, 2025 Buy	Restricted Stock Units M-Exempt	Jensen Glenn Vp, Operations	Officer	1 642 Value: $624
Jul 29, 2025 Buy	Restricted Stock Units M-Exempt	Jensen Glenn Vp, Operations	Officer	1 642 Value: $624

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT CYANOTECH CORPORATION

Cyanotech Corporation engages in the cultivation, production, and sale of natural products derived from microalgae worldwide. The company's products include BioAstin Hawaiian Astaxanthin, a dietary antioxidant to enhance skin, and to support eye, joint and immune health, as well as used as a human dietary supplement and dietary ingredient; and Hawaiian Spirulina Pacifica, a nutrient-rich dietary supplement, which is used for extra energy, strengt...

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