Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Cyanotech Corp (CYAN) since 2015 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Cyanotech Corp. Table 2 shows the detailed insider transactions. This company's CIK number is 768408.
Total stock buying since 2015: $1,484,434.
Total stock sales since 2015: $205,780.
Total stock option exercises since 2015: $145,180.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 0 | $0 | 0 | $0 | 26,344 | $0 |
| 2024 | 326,835 | $225,071 | 0 | $0 | 37,600 | $0 |
| 2023 | 487,570 | $470,876 | 0 | $0 | 14,498 | $0 |
| 2022 | 0 | $0 | 0 | $0 | 2,891 | $0 |
| 2021 | 36,000 | $126,180 | 15,486 | $60,650 | 21,021 | $57,280 |
| 2020 | 80,789 | $210,799 | 41,845 | $107,960 | 11,170 | $0 |
| 2019 | 0 | $0 | 10,000 | $37,170 | 42,945 | $62,400 |
| 2018 | 0 | $0 | 0 | $0 | 10,992 | $3,200 |
| 2017 | 0 | $0 | 0 | $0 | 2,000 | $3,200 |
| 2016 | 89,345 | $451,508 | 0 | $0 | 0 | $0 |
| 2015 | 0 | $0 | 0 | $0 | 5,000 | $19,100 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-07 | 0 | $0 | 0 | $0 | 8,176 | $0 |
| 2025-04 | 0 | $0 | 0 | $0 | 198 | $0 |
| 2025-02 | 0 | $0 | 0 | $0 | 17,970 | $0 |
| 2024-10 | 5,000 | $3,800 | 0 | $0 | 0 | $0 |
| 2024-09 | 100,000 | $79,400 | 0 | $0 | 0 | $0 |
| 2024-08 | 105,000 | $81,850 | 0 | $0 | 0 | $0 |
| 2024-07 | 100,000 | $54,799 | 0 | $0 | 11,599 | $0 |
| 2024-04 | 0 | $0 | 0 | $0 | 231 | $0 |
| 2024-02 | 16,835 | $5,222 | 0 | $0 | 25,770 | $0 |
| 2023-12 | 439,455 | $435,509 | 0 | $0 | 0 | $0 |
| 2023-09 | 48,115 | $35,367 | 0 | $0 | 0 | $0 |
| 2023-07 | 0 | $0 | 0 | $0 | 14,260 | $0 |
| 2023-04 | 0 | $0 | 0 | $0 | 238 | $0 |
| 2022-08 | 0 | $0 | 0 | $0 | 2,660 | $0 |
| 2022-04 | 0 | $0 | 0 | $0 | 231 | $0 |
| 2021-11 | 36,000 | $126,180 | 0 | $0 | 0 | $0 |
| 2021-07 | 0 | $0 | 0 | $0 | 4,889 | $0 |
| 2021-04 | 0 | $0 | 0 | $0 | 132 | $0 |
| 2021-03 | 0 | $0 | 15,486 | $60,650 | 16,000 | $57,280 |
| 2020-11 | 41,845 | $107,960 | 41,845 | $107,960 | 0 | $0 |
| 2020-09 | 28,944 | $78,569 | 0 | $0 | 0 | $0 |
| 2020-08 | 10,000 | $24,270 | 0 | $0 | 0 | $0 |
| 2020-07 | 0 | $0 | 0 | $0 | 2,231 | $0 |
| 2020-04 | 0 | $0 | 0 | $0 | 605 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-07-29 | Custer Matthew Keith (President and CEO) | Option Ex | 2,075 | .00 | 0 |
| 2025-07-29 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 1,502 | .00 | 0 |
| 2025-07-29 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 1,380 | .00 | 0 |
| 2025-07-29 | Jensen Glenn (VP, Operations) | Option Ex | 1,642 | .00 | 0 |
| 2025-07-29 | Cysewski Gerald R (Other) | Option Ex | 1,577 | .00 | 0 |
| 2025-04-07 | Kakuk Collette Nicole (Chief Strategic Comml Officer) | Option Ex | 33 | .00 | 0 |
| 2025-04-07 | Custer Matthew Keith (President and CEO) | Option Ex | 33 | .00 | 0 |
| 2025-04-07 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 33 | .00 | 0 |
| 2025-04-07 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 33 | .00 | 0 |
| 2025-04-07 | Jensen Glenn (VP, Operations) | Option Ex | 33 | .00 | 0 |
| 2025-04-07 | Cysewski Gerald R (Other) | Option Ex | 33 | .00 | 0 |
| 2025-02-18 | Kakuk Collette Nicole (Chief Strategic Comml Officer) | Option Ex | 3,900 | .00 | 0 |
| 2025-02-18 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 3,400 | .00 | 0 |
| 2025-02-18 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 3,200 | .00 | 0 |
| 2025-02-18 | Jensen Glenn (VP, Operations) | Option Ex | 3,570 | .00 | 0 |
| 2025-02-18 | Cysewski Gerald R (Other) | Option Ex | 3,900 | .00 | 0 |
| 2024-10-01 | Davis Michael A / (Director) | Buy | 5,000 | .76 | 3,800 |
| 2024-09-30 | Davis Michael A / (Director) | Buy | 5,000 | .76 | 3,800 |
| 2024-09-27 | Davis Michael A / (Director) | Buy | 5,000 | .77 | 3,850 |
| 2024-09-26 | Davis Michael A / (Director) | Buy | 5,000 | .77 | 3,850 |
| 2024-09-25 | Davis Michael A / (Director) | Buy | 5,000 | .77 | 3,850 |
| 2024-09-24 | Davis Michael A / (Director) | Buy | 5,000 | .73 | 3,650 |
| 2024-09-23 | Davis Michael A / (Director) | Buy | 5,000 | .77 | 3,850 |
| 2024-09-20 | Davis Michael A / (Director) | Buy | 5,000 | .77 | 3,850 |
| 2024-09-19 | Davis Michael A / (Director) | Buy | 5,000 | .74 | 3,700 |
| 2024-09-18 | Davis Michael A / (Director) | Buy | 5,000 | .78 | 3,900 |
| 2024-09-17 | Davis Michael A / (Director) | Buy | 5,000 | .73 | 3,650 |
| 2024-09-16 | Davis Michael A / (Director) | Buy | 5,000 | .82 | 4,100 |
| 2024-09-13 | Davis Michael A / (Director) | Buy | 5,000 | .82 | 4,100 |
| 2024-09-12 | Davis Michael A / (Director) | Buy | 5,000 | .83 | 4,150 |
| 2024-09-11 | Davis Michael A / (Director) | Buy | 5,000 | .83 | 4,150 |
| 2024-09-10 | Davis Michael A / (Director) | Buy | 5,000 | .83 | 4,150 |
| 2024-09-09 | Davis Michael A / (Director) | Buy | 5,000 | .84 | 4,200 |
| 2024-09-06 | Davis Michael A / (Director) | Buy | 5,000 | .84 | 4,200 |
| 2024-09-05 | Davis Michael A / (Director) | Buy | 5,000 | .84 | 4,200 |
| 2024-09-04 | Davis Michael A / (Director) | Buy | 5,000 | .85 | 4,250 |
| 2024-09-03 | Davis Michael A / (Director) | Buy | 5,000 | .79 | 3,950 |
| 2024-08-30 | Davis Michael A / (Director) | Buy | 5,000 | .79 | 3,950 |
| 2024-08-29 | Davis Michael A / (Director) | Buy | 10,000 | .75 | 7,500 |
| 2024-08-28 | Davis Michael A / (Director) | Buy | 5,000 | .79 | 3,950 |
| 2024-08-27 | Davis Michael A / (Director) | Buy | 5,000 | .80 | 4,000 |
| 2024-08-26 | Davis Michael A / (Director) | Buy | 5,000 | .77 | 3,850 |
| 2024-08-23 | Davis Michael A / (Director) | Buy | 5,000 | .84 | 4,200 |
| 2024-08-22 | Davis Michael A / (Director) | Buy | 5,000 | .76 | 3,800 |
| 2024-08-21 | Davis Michael A / (Director) | Buy | 5,000 | .75 | 3,750 |
| 2024-08-20 | Davis Michael A / (Director) | Buy | 5,000 | .87 | 4,350 |
| 2024-08-19 | Davis Michael A / (Director) | Buy | 5,000 | .89 | 4,450 |
| 2024-08-14 | Davis Michael A / (Director) | Buy | 5,000 | .70 | 3,500 |
| 2024-08-13 | Davis Michael A / (Director) | Buy | 5,000 | .74 | 3,700 |
| 2024-08-12 | Davis Michael A / (Director) | Buy | 5,000 | .74 | 3,700 |
| 2024-08-09 | Davis Michael A / (Director) | Buy | 5,000 | .79 | 3,950 |
| 2024-08-08 | Davis Michael A / (Director) | Buy | 5,000 | .75 | 3,750 |
| 2024-08-07 | Davis Michael A / (Director) | Buy | 5,000 | .70 | 3,500 |
| 2024-08-06 | Davis Michael A / (Director) | Buy | 5,000 | .80 | 4,000 |
| 2024-08-05 | Davis Michael A / (Director) | Buy | 5,000 | .77 | 3,850 |
| 2024-08-02 | Davis Michael A / (Director) | Buy | 5,000 | .79 | 3,950 |
| 2024-08-01 | Davis Michael A / (Director) | Buy | 5,000 | .83 | 4,150 |
| 2024-07-31 | Davis Michael A / (Director) | Buy | 5,000 | .83 | 4,150 |
| 2024-07-30 | Davis Michael A / (Director) | Buy | 5,000 | .71 | 3,550 |
| 2024-07-29 | Hartmann Charles Jason (VP, Sales & Marketing) | Option Ex | 1,680 | .00 | 0 |
| 2024-07-29 | Custer Matthew Keith (President and CEO) | Option Ex | 2,074 | .00 | 0 |
| 2024-07-29 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 1,502 | .00 | 0 |
| 2024-07-29 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 1,379 | .00 | 0 |
| 2024-07-29 | Ladin Felicia I (CFO, VP Fin & Admin, Treasurer) | Option Ex | 1,747 | .00 | 0 |
| 2024-07-29 | Jensen Glenn (VP, Operations) | Option Ex | 1,641 | .00 | 0 |
| 2024-07-29 | Cysewski Gerald R (Other) | Option Ex | 1,576 | .00 | 0 |
| 2024-07-29 | Davis Michael A / (Director) | Buy | 5,000 | .64 | 3,200 |
| 2024-07-26 | Davis Michael A / (Director) | Buy | 5,000 | .64 | 3,200 |
| 2024-07-25 | Davis Michael A / (Director) | Buy | 5,000 | .64 | 3,200 |
| 2024-07-24 | Davis Michael A / (Director) | Buy | 5,000 | .60 | 3,000 |
| 2024-07-23 | Davis Michael A / (Director) | Buy | 5,000 | .58 | 2,900 |
| 2024-07-22 | Davis Michael A / (Director) | Buy | 5,000 | .59 | 2,950 |
| 2024-07-19 | Davis Michael A / (Director) | Buy | 5,000 | .59 | 2,950 |
| 2024-07-18 | Davis Michael A / (Director) | Buy | 5,000 | .58 | 2,900 |
| 2024-07-17 | Davis Michael A / (Director) | Buy | 5,000 | .59 | 2,950 |
| 2024-07-16 | Davis Michael A / (Director) | Buy | 5,000 | .57 | 2,849 |
| 2024-07-15 | Davis Michael A / (Director) | Buy | 5,000 | .53 | 2,650 |
| 2024-07-12 | Davis Michael A / (Director) | Buy | 5,000 | .55 | 2,750 |
| 2024-07-11 | Davis Michael A / (Director) | Buy | 5,000 | .45 | 2,250 |
| 2024-07-10 | Davis Michael A / (Director) | Buy | 5,000 | .39 | 1,950 |
| 2024-07-09 | Davis Michael A / (Director) | Buy | 5,000 | .39 | 1,950 |
| 2024-07-08 | Davis Michael A / (Director) | Buy | 5,000 | .32 | 1,600 |
| 2024-07-05 | Davis Michael A / (Director) | Buy | 5,000 | .40 | 2,000 |
| 2024-07-03 | Davis Michael A / (Director) | Buy | 5,000 | .37 | 1,850 |
| 2024-04-08 | Hartmann Charles Jason (VP, Sales & Marketing) | Option Ex | 33 | .00 | 0 |
| 2024-04-08 | Custer Matthew Keith (President and CEO) | Option Ex | 33 | .00 | 0 |
| 2024-04-08 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 33 | .00 | 0 |
| 2024-04-08 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 33 | .00 | 0 |
| 2024-04-08 | Ladin Felicia I (CFO, VP Fin & Admin, Treasurer) | Option Ex | 33 | .00 | 0 |
| 2024-04-08 | Jensen Glenn (VP, Operations) | Option Ex | 33 | .00 | 0 |
| 2024-04-08 | Cysewski Gerald R (Other) | Option Ex | 33 | .00 | 0 |
| 2024-02-27 | Jensen Glenn (VP, Operations) | Buy | 8,500 | .33 | 2,805 |
| 2024-02-26 | Jensen Glenn (VP, Operations) | Buy | 8,335 | .29 | 2,417 |
| 2024-02-16 | Kakuk Collette Nicole (Chief Strategic Comml Officer) | Option Ex | 3,900 | .00 | 0 |
| 2024-02-16 | Hartmann Charles Jason (VP, Sales & Marketing) | Option Ex | 3,900 | .00 | 0 |
| 2024-02-16 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 3,400 | .00 | 0 |
| 2024-02-16 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 3,200 | .00 | 0 |
| 2024-02-16 | Ladin Felicia I (CFO, VP Fin & Admin, Treasurer) | Option Ex | 3,900 | .00 | 0 |
| 2024-02-16 | Jensen Glenn (VP, Operations) | Option Ex | 3,570 | .00 | 0 |
| 2024-02-16 | Cysewski Gerald R (Other) | Option Ex | 3,900 | .00 | 0 |
| 2023-12-15 | Davis Michael A / (Director) | Buy | 400,000 | 1.00 | 400,000 |
| 2023-12-01 | Davis Michael A / (Director) | Buy | 39,455 | .90 | 35,509 |
| 2023-09-15 | Davis Michael A / (Director) | Buy | 3,245 | .84 | 2,742 |
| 2023-09-14 | Davis Michael A / (Director) | Buy | 2,253 | .83 | 1,874 |
| 2023-09-13 | Davis Michael A / (Director) | Buy | 3,245 | .83 | 2,690 |
| 2023-09-12 | Davis Michael A / (Director) | Buy | 107 | .79 | 84 |
| 2023-09-11 | Davis Michael A / (Director) | Buy | 292 | .83 | 241 |
| 2023-09-08 | Davis Michael A / (Director) | Buy | 2,553 | .79 | 2,024 |
| 2023-09-07 | Davis Michael A / (Director) | Buy | 17,900 | .75 | 13,353 |
| 2023-09-06 | Davis Michael A / (Director) | Buy | 5,847 | .69 | 4,046 |
| 2023-09-05 | Davis Michael A / (Director) | Buy | 12,673 | .66 | 8,313 |
| 2023-07-31 | Hartmann Charles Jason (VP, Sales & Marketing) | Option Ex | 1,680 | .00 | 0 |
| 2023-07-31 | Custer Matthew Keith (President and CEO) | Option Ex | 2,603 | .00 | 0 |
| 2023-07-31 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 1,904 | .00 | 0 |
| 2023-07-31 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 1,877 | .00 | 0 |
| 2023-07-31 | Ladin Felicia I (CFO, VP Fin & Admin, Treasurer) | Option Ex | 1,747 | .00 | 0 |
| 2023-07-31 | Jensen Glenn (VP, Operations) | Option Ex | 2,206 | .00 | 0 |
| 2023-07-31 | Cysewski Gerald R (Other) | Option Ex | 2,243 | .00 | 0 |
| 2023-04-06 | Hartmann Charles Jason (VP, Sales & Marketing) | Option Ex | 34 | .00 | 0 |
| 2023-04-06 | Custer Matthew Keith (President and CEO) | Option Ex | 34 | .00 | 0 |
| 2023-04-06 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 34 | .00 | 0 |
| 2023-04-06 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 34 | .00 | 0 |
| 2023-04-06 | Ladin Felicia I (CFO, VP Fin & Admin, Treasurer) | Option Ex | 34 | .00 | 0 |
| 2023-04-06 | Jensen Glenn (VP, Operations) | Option Ex | 34 | .00 | 0 |
| 2023-04-06 | Cysewski Gerald R (Other) | Option Ex | 34 | .00 | 0 |
| 2022-08-01 | Custer Matthew Keith (President and CEO) | Option Ex | 529 | .00 | 0 |
| 2022-08-01 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 402 | .00 | 0 |
| 2022-08-01 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 498 | .00 | 0 |
| 2022-08-01 | Jensen Glenn (VP, Operations) | Option Ex | 565 | .00 | 0 |
| 2022-08-01 | Cysewski Gerald R (Other) | Option Ex | 666 | .00 | 0 |
| 2022-04-06 | Hartmann Charles Jason (VP, Sales & Marketing) | Option Ex | 33 | .00 | 0 |
| 2022-04-06 | Custer Matthew Keith (President) | Option Ex | 33 | .00 | 0 |
| 2022-04-06 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 33 | .00 | 0 |
| 2022-04-06 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 33 | .00 | 0 |
| 2022-04-06 | Ladin Felicia I (CFO, VP Fin & Admin, Treasurer) | Option Ex | 33 | .00 | 0 |
| 2022-04-06 | Jensen Glenn (VP, Operations) | Option Ex | 33 | .00 | 0 |
| 2022-04-06 | Cysewski Gerald R (CEO) | Option Ex | 33 | .00 | 0 |
| 2021-11-30 | Davis Michael A / (Director) | Buy | 36,000 | 3.50 | 126,180 |
| 2021-07-30 | Custer Matthew Keith (President) | Option Ex | 530 | .00 | 0 |
| 2021-07-30 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 402 | .00 | 0 |
| 2021-07-30 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 498 | .00 | 0 |
| 2021-07-30 | Jensen Glenn (VP, Operations) | Option Ex | 564 | .00 | 0 |
| 2021-07-30 | Cysewski Gerald R (CEO) | Option Ex | 666 | .00 | 0 |
| 2021-07-13 | Custer Matthew Keith (President) | Option Ex | 254 | .00 | 0 |
| 2021-07-13 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 303 | .00 | 0 |
| 2021-07-13 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 435 | .00 | 0 |
| 2021-07-13 | Jensen Glenn (VP, Operations) | Option Ex | 501 | .00 | 0 |
| 2021-07-13 | Cysewski Gerald R (CEO) | Option Ex | 736 | .00 | 0 |
| 2021-04-06 | Custer Matthew Keith (Vice President, Gen Mgr) | Option Ex | 33 | .00 | 0 |
| 2021-04-06 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 33 | .00 | 0 |
| 2021-04-06 | Jensen Glenn (VP, Operations) | Option Ex | 33 | .00 | 0 |
| 2021-04-06 | Cysewski Gerald R (CEO) | Option Ex | 33 | .00 | 0 |
| 2021-03-16 | Jensen Glenn (VP, Operations) | Sale | 7,486 | 3.87 | 28,970 |
| 2021-03-16 | Jensen Glenn (VP, Operations) | Option Ex | 8,000 | 3.58 | 28,640 |
| 2021-03-12 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Sale | 8,000 | 3.96 | 31,680 |
| 2021-03-12 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 8,000 | 3.58 | 28,640 |
| 2020-11-23 | Menzel Walter Bennett (Director) | Sale | 41,845 | 2.58 | 107,960 |
| 2020-11-23 | Davis Michael A / (Director) | Buy | 41,845 | 2.58 | 107,960 |
| 2020-09-10 | Davis Michael A / (Director) | Buy | 648 | 3.00 | 1,944 |
| 2020-09-09 | Davis Michael A / (Director) | Buy | 1,818 | 2.85 | 5,174 |
| 2020-09-08 | Davis Michael A / (Director) | Buy | 4,241 | 2.82 | 11,951 |
| 2020-09-04 | Davis Michael A / (Director) | Buy | 1,923 | 2.58 | 4,969 |
| 2020-09-02 | Davis Michael A / (Director) | Buy | 16,691 | 2.74 | 45,666 |
| 2020-09-01 | Davis Michael A / (Director) | Buy | 3,623 | 2.45 | 8,865 |
| 2020-08-31 | Davis Michael A / (Director) | Buy | 10,000 | 2.43 | 24,270 |
| 2020-07-13 | Custer Matthew Keith (Vice President, Gen Mgr) | Option Ex | 254 | .00 | 0 |
| 2020-07-13 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 303 | .00 | 0 |
| 2020-07-13 | Johansen Jennifer M. (VP, Quality, Regulatory & Govt) | Option Ex | 435 | .00 | 0 |
| 2020-07-13 | Jensen Glenn (VP, Operations) | Option Ex | 502 | .00 | 0 |
| 2020-07-13 | Cysewski Gerald R (CEO) | Option Ex | 737 | .00 | 0 |
| 2020-04-06 | Custer Matthew Keith (Vice President, Gen Mgr) | Option Ex | 40 | .00 | 0 |
| 2020-04-06 | Nordin Amy Beth (VP, HR, Secretary) | Option Ex | 34 | .00 | 0 |
| 2020-04-06 | Orlopp Brian Brett (CFO, VP) | Option Ex | 33 | .00 | 0 |
| 2020-04-06 | Johansen Jennifer M. (VP, Quality & Regulatory) | Option Ex | 166 | .00 | 0 |
| 2020-04-06 | Jensen Glenn (VP, Mfg & Infrastructure) | Option Ex | 166 | .00 | 0 |
| 2020-04-06 | Cysewski Gerald R (CEO) | Option Ex | 166 | .00 | 0 |
| 2020-03-31 | Cysewski Gerald R (CEO) | Option Ex | 8,334 | .00 | 0 |
| 2019-07-13 | Johansen Jennifer M. (VP, Quality & Regulatory) | Option Ex | 435 | .00 | 0 |
| 2019-07-13 | Jensen Glenn (VP, Mfg & Infrastructure) | Option Ex | 502 | .00 | 0 |
| 2019-07-13 | Cysewski Gerald R (CEO) | Option Ex | 737 | .00 | 0 |
| 2019-05-22 | Morton Mawae (Other) | Option Ex | 2,404 | .00 | 0 |
| 2019-04-05 | Johansen Jennifer M. (VP, Quality & Regulatory) | Option Ex | 167 | .00 | 0 |
| 2019-04-05 | Morton Mawae (CEO) | Option Ex | 33 | .00 | 0 |
| 2019-04-05 | Jensen Glenn (VP, Mfg & Infrastructure) | Option Ex | 167 | .00 | 0 |
| 2019-04-05 | Cysewski Gerald R (CSO) | Option Ex | 167 | .00 | 0 |
| 2019-04-01 | Cysewski Gerald R (CSO) | Option Ex | 8,333 | .00 | 0 |
| 2019-03-04 | Johansen Jennifer M. (VP of Quality) | Sale | 10,000 | 3.72 | 37,170 |
| 2019-03-04 | Johansen Jennifer M. (VP of Quality) | Option Ex | 10,000 | 2.08 | 20,800 |
| 2019-03-04 | Cysewski Gerald R (CSO) | Option Ex | 10,000 | 2.08 | 20,800 |
| 2019-02-28 | Jensen Glenn (VP of Manufacturing) | Option Ex | 5,000 | 2.08 | 10,400 |
| 2019-02-26 | Jensen Glenn (VP of Manufacturing) | Option Ex | 3,900 | 2.08 | 8,112 |
| 2019-02-21 | Jensen Glenn (VP of Manufacturing) | Option Ex | 1,100 | 2.08 | 2,288 |
| 2018-04-05 | Johansen Jennifer M. (VP of Quality) | Option Ex | 167 | .00 | 0 |
| 2018-04-05 | Deal Jole Eileen (CFO, VP, Treasurer, Secretary) | Option Ex | 101 | .00 | 0 |
| 2018-04-05 | Jensen Glenn (VP of Manufacturing) | Option Ex | 167 | .00 | 0 |
| 2018-04-05 | Cysewski Gerald R (CSO) | Option Ex | 167 | .00 | 0 |
| 2018-04-05 | Watts Gerard J (COO) | Option Ex | 57 | .00 | 0 |
| 2018-04-02 | Cysewski Gerald R (CSO) | Option Ex | 8,333 | .00 | 0 |
| 2018-02-21 | Cysewski Gerald R (CSO) | Option Ex | 2,000 | 1.60 | 3,200 |
| 2017-12-04 | Jensen Glenn (VP of Manufacturing) | Option Ex | 2,000 | 1.60 | 3,200 |
| 2016-04-28 | Blueline Partners, L.l.c. | Buy | 7,910 | 5.21 | 41,226 |
| 2016-04-27 | Blueline Partners, L.l.c. | Buy | 7,305 | 5.18 | 37,861 |
| 2016-04-05 | Blueline Partners, L.l.c. | Buy | 1,600 | 5.20 | 8,320 |
| 2016-04-04 | Blueline Partners, L.l.c. | Buy | 792 | 5.20 | 4,118 |
| 2016-04-01 | Blueline Partners, L.l.c. | Buy | 3,150 | 5.15 | 16,222 |
| 2016-03-23 | Blueline Partners, L.l.c. | Buy | 15,962 | 5.05 | 80,687 |
| 2016-03-22 | Blueline Partners, L.l.c. | Buy | 2,112 | 5.00 | 10,560 |
| 2016-03-21 | Blueline Partners, L.l.c. | Buy | 10,000 | 5.06 | 50,599 |
| 2016-03-18 | Blueline Partners, L.l.c. | Buy | 12,233 | 4.99 | 61,042 |
| 2016-03-17 | Blueline Partners, L.l.c. | Buy | 311 | 4.82 | 1,499 |
| 2016-03-16 | Blueline Partners, L.l.c. | Buy | 27,970 | 4.98 | 139,374 |
| 2015-03-13 | Deal Jole Eileen (CFO, VP, Treasurer, Secretary) | Option Ex | 5,000 | 3.82 | 19,100 |
Insider trading activities including stock purchases, stock sales, and option exercises of CYAN listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Cyanotech Corp (symbol CYAN, CIK number 768408) see the Securities and Exchange Commission (SEC) website.