Insider Trading Arrangements |
12 Months Ended | ||
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Mar. 31, 2025
shares
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| Trading Arrangements, by Individual [Table] | |||
| Material Terms of Trading Arrangement [Text Block] |
March 6, 2024, , the , entered into a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. The plan provided for the purchase of 315,000 shares of Cyanotech common stock, which began on July 3, 2024. On , the plan completed the aggregate purchase of 315,000 shares and was in accordance with its terms.
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| Trading Arrangement, Securities Aggregate Available Amount | 315,000 | ||
| Non-Rule 10b5-1 Arrangement Adopted [Flag] | false | ||
| Rule 10b5-1 Arrangement Adopted [Flag] | false | ||
| Non-Rule 10b5-1 Arrangement Terminated [Flag] | false | ||
| Trading Arrangement, Individual Name | Michael Davis | ||
| Trading Arrangement, Individual Title | Chairman of the Company’s Board of Directors | ||
| Rule 10b5-1 Arrangement Terminated [Flag] | true | ||
| Trading Arrangement Termination Date | October 1, 2024 |