CYANOTECH CORP (CYAN)

Latest Insider Confidence Score

2025Q4

48.7
Bearish

Company insider confidence (by quarter)

2003Q4 2025Q4

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
BlueLine Capital Partners II, L.P. 10% Owner 850,116 Nov 9, 2018
Meridian TSV II, LP 10% Owner 850,116 Nov 9, 2018
TSV Investment Partners, LLC 10% Owner 850,116 Nov 9, 2018
BlueLine Partners, L.L.C. 10% Owner 850,116 Nov 9, 2018
Meridian OHC Partners, LP 10% Owner 850,116 Nov 9, 2018

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Sep 12, 2025 Sep 16, 2025 Miyashiro Jennifer A.S. CFO Neutral 52.5 - 0.00% ✗ -
Sep 12, 2025 Miyashiro Jennifer A.S. CFO Neutral 52.5 - 0.00% ✗ -
Aug 28, 2025 Sep 2, 2025 MULDER DAVID M Director Neutral 90.0 +50,000 32.58% ✗ -
Aug 28, 2025 Sep 2, 2025 Vied David L Director Neutral 90.0 +50,000 28.55% ✗ -
Aug 28, 2025 Sep 2, 2025 DAVIS MICHAEL A / Director Neutral 82.5 +50,000 2.80% ✗ -
Jul 29, 2025 Jul 31, 2025 Custer Matthew Keith CEO Neutral 52.5 - 0.00% ✗ -
Jul 29, 2025 Jul 31, 2025 Nordin Amy Beth VP, HR, Secretary Sell 27.5 -525 -5.48% ✗ $212.6
Jul 29, 2025 Jul 31, 2025 Johansen Jennifer M. VP, Quality, Regulatory & Govt Sell 27.5 -518 -5.05% ✗ $209.8
Jul 29, 2025 Jul 31, 2025 Cysewski Gerald R Other Sell 45.0 -592 -0.40% ✗ $239.8
Jul 29, 2025 Jul 31, 2025 Jensen Glenn VP, Operations Sell 27.5 -617 -1.37% ✗ $249.9
Jun 16, 2025 Jun 18, 2025 Custer Matthew Keith CEO Neutral 52.5 - 0.00% ✗ -
May 19, 2025 May 21, 2025 Brand Jennifer Kimberly VP of Sales Neutral 52.5 - 0.00% ✗ -
May 19, 2025 May 21, 2025 Nordin Amy Beth VP, HR, Secretary Neutral 52.5 - 0.00% ✗ -
May 19, 2025 May 21, 2025 Jensen Glenn VP, Operations Neutral 52.5 - 0.00% ✗ -
May 20, 2025 Brand Jennifer Kimberly VP of Sales Neutral 52.5 - 0.00% ✗ -
Apr 7, 2025 Apr 9, 2025 Kakuk Collette Nicole Chief Strategic Comml Officer Sell 45.0 -14 -0.30% ✗ $4.3
Apr 7, 2025 Apr 9, 2025 Nordin Amy Beth VP, HR, Secretary Sell 52.5 -12 -0.15% ✗ $3.7
Apr 7, 2025 Apr 9, 2025 Johansen Jennifer M. VP, Quality, Regulatory & Govt Sell 52.5 -13 -0.15% ✗ $4
Apr 7, 2025 Apr 9, 2025 Jensen Glenn VP, Operations Sell 52.5 -13 -0.03% ✗ $4
Apr 7, 2025 Apr 9, 2025 Custer Matthew Keith CEO Neutral 52.5 - 0.00% ✗ -
Apr 7, 2025 Apr 9, 2025 Cysewski Gerald R Other Sell 52.5 -13 -0.01% ✗ $4
Feb 18, 2025 Feb 20, 2025 Kakuk Collette Nicole Chief Strategic Comml Officer Sell 27.5 -1,556 -24.92% ✗ $622.4
Feb 18, 2025 Feb 20, 2025 Nordin Amy Beth VP, HR, Secretary Sell 27.5 -1,189 -12.87% ✗ $475.6
Feb 18, 2025 Feb 20, 2025 Johansen Jennifer M. VP, Quality, Regulatory & Govt Sell 27.5 -1,201 -11.94% ✗ $480.4
Feb 18, 2025 Feb 20, 2025 Jensen Glenn VP, Operations Sell 27.5 -1,340 -3.00% ✗ $536
Feb 18, 2025 Feb 20, 2025 Cysewski Gerald R Other Sell 37.5 -1,464 -0.99% ✗ $585.6
Oct 1, 2024 Oct 3, 2024 DAVIS MICHAEL A / Director Buy 77.5 +18,158 1.03% ✓ $3.8K
Sep 27, 2024 Oct 1, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.57% ✓ $7.7K
Sep 25, 2024 Sep 27, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.57% ✓ $7.7K
Sep 23, 2024 Sep 25, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.57% ✓ $7.5K
Sep 19, 2024 Sep 23, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.58% ✓ $7.6K
Sep 17, 2024 Sep 19, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.58% ✓ $7.6K
Sep 13, 2024 Sep 17, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.58% ✓ $8.2K
Sep 11, 2024 Sep 13, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.59% ✓ $8.3K
Sep 9, 2024 Sep 11, 2024 DAVIS MICHAEL A / Director Buy 82.5 +76,667 4.72% ✓ $8.4K
Sep 5, 2024 Sep 9, 2024 Rogerson Jennifer Charlene CFO Neutral 52.5 - 0.00% ✗ -
Sep 9, 2024 Rogerson Jennifer Charlene CFO Neutral 52.5 - 0.00% ✗ -
Sep 5, 2024 Sep 9, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.62% ✓ $8.4K
Sep 4, 2024 Sep 5, 2024 Vied David L Director Neutral 90.0 +39,506 29.13% ✗ -
Sep 4, 2024 Sep 5, 2024 MULDER DAVID M Director Neutral 90.0 +39,506 34.67% ✗ -
Sep 3, 2024 Sep 5, 2024 DAVIS MICHAEL A / Director Buy 82.5 +47,037 3.00% ✓ $8.2K
Aug 29, 2024 Sep 3, 2024 DAVIS MICHAEL A / Director Buy 61.3 +15,000 0.37% ✓ $11.5K
Aug 27, 2024 Aug 29, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.65% ✓ $8K
Aug 23, 2024 Aug 27, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.65% ✓ $8.1K
Aug 21, 2024 Aug 23, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.65% ✓ $7.6K
Aug 19, 2024 Aug 21, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.66% ✓ $8.8K
Aug 15, 2024 Aug 19, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.66% ✓ $8K
Aug 13, 2024 Aug 15, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.67% ✓ $7.2K
Aug 9, 2024 Aug 13, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.67% ✓ $7.7K
Aug 7, 2024 Aug 9, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.68% ✓ $7.3K
Aug 5, 2024 Aug 7, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.68% ✓ $7.9K
Aug 1, 2024 Aug 5, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.69% ✓ $8.1K
Jul 30, 2024 Aug 1, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.69% ✓ $7.7K
Jul 29, 2024 Jul 31, 2024 Nordin Amy Beth VP, HR, Secretary Sell 27.5 -564 -8.80% ✗ $315.8
Jul 29, 2024 Jul 31, 2024 Ladin Felicia I CFO Sell 27.5 -656 -12.30% ✗ $367.4
Jul 29, 2024 Jul 31, 2024 Johansen Jennifer M. VP, Quality, Regulatory & Govt Sell 27.5 -518 -7.02% ✗ $290.1
Jul 29, 2024 Jul 31, 2024 Jensen Glenn VP, Operations Sell 27.5 -616 -1.48% ✗ $345
Jul 29, 2024 Jul 31, 2024 Hartmann Charles Jason VP, Sales & Marketing Sell 27.5 -670 -13.16% ✗ $375.2
Jul 29, 2024 Jul 31, 2024 Cysewski Gerald R Other Sell 45.0 -592 -0.41% ✗ $331.5
Jul 29, 2024 Jul 31, 2024 Custer Matthew Keith CEO Sell 27.5 -779 -14.36% ✗ $436.2
Jul 26, 2024 Jul 30, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.70% ✓ $6.4K
Jul 24, 2024 Jul 26, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.70% ✓ $6.2K
Jul 22, 2024 Jul 24, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.71% ✓ $5.9K
Jul 18, 2024 Jul 22, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.71% ✓ $5.9K
Jul 16, 2024 Jul 18, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.72% ✓ $5.8K
Jul 12, 2024 Jul 16, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.72% ✓ $5.4K
Jul 10, 2024 Jul 12, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.73% ✓ $4.2K
Jul 8, 2024 Jul 10, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.73% ✓ $3.6K
Jul 3, 2024 Jul 8, 2024 DAVIS MICHAEL A / Director Buy 67.5 +10,000 0.74% ✓ $3.9K
Apr 8, 2024 Apr 10, 2024 Hartmann Charles Jason VP, Sales & Marketing Sell 45.0 -14 -0.41% ✗ $5.6
Apr 8, 2024 Apr 10, 2024 Johansen Jennifer M. VP, Quality, Regulatory & Govt Sell 45.0 -13 -0.22% ✗ $5.2
Apr 8, 2024 Apr 10, 2024 Nordin Amy Beth VP, HR, Secretary Sell 45.0 -13 -0.26% ✗ $5.2
Apr 8, 2024 Apr 10, 2024 Jensen Glenn VP, Operations Sell 52.5 -13 -0.03% ✗ $5.2
Apr 8, 2024 Apr 10, 2024 Ladin Felicia I CFO Sell 45.0 -13 -0.36% ✗ $5.2
Apr 8, 2024 Apr 10, 2024 Custer Matthew Keith CEO Sell 45.0 -13 -0.39% ✗ $5.2
Apr 8, 2024 Apr 10, 2024 Cysewski Gerald R Other Sell 52.5 -13 -0.01% ✗ $5.2
Feb 26, 2024 Feb 27, 2024 Jensen Glenn VP, Operations Buy 90.0 +16,835 72.67% ✗ $5.2K
Feb 16, 2024 Feb 21, 2024 Ladin Felicia I CFO Sell 27.5 -1,465 -29.11% ✗ $644.6
Feb 16, 2024 Feb 21, 2024 Cysewski Gerald R Other Sell 27.5 -1,465 -1.02% ✗ $644.6
Feb 16, 2024 Feb 21, 2024 Jensen Glenn VP, Operations Sell 27.5 -1,341 -5.47% ✗ $590
Feb 16, 2024 Feb 21, 2024 Johansen Jennifer M. VP, Quality, Regulatory & Govt Sell 27.5 -1,202 -16.73% ✗ $528.9
Feb 16, 2024 Feb 21, 2024 Kakuk Collette Nicole Chief Strategic Comml Officer Sell 27.5 -1,556 -39.90% ✗ $684.6
Feb 16, 2024 Feb 21, 2024 Hartmann Charles Jason VP, Sales & Marketing Sell 27.5 -1,556 -31.44% ✗ $684.6
Feb 16, 2024 Feb 21, 2024 Nordin Amy Beth VP, HR, Secretary Sell 27.5 -1,277 -20.73% ✗ $561.9
Dec 15, 2023 Dec 19, 2023 DAVIS MICHAEL A / Director Buy 97.5 +400,000 41.80% ✗ $400K
Dec 1, 2023 Dec 4, 2023 DAVIS MICHAEL A / Director Buy 83.8 +39,455 4.30% ✗ $35.5K
Oct 13, 2023 Oct 17, 2023 DAVIS MICHAEL A / Director Neutral 77.5 +12,821 1.42% ✗ -
Sep 15, 2023 Sep 18, 2023 DAVIS MICHAEL A / Director Buy 60.0 +3,245 0.36% ✗ $2.7K
Sep 12, 2023 Sep 14, 2023 Kakuk Collette Nicole Chief Strategic Comml Officer Neutral 52.5 - 0.00% ✗ -
Sep 13, 2023 Sep 14, 2023 DAVIS MICHAEL A / Director Buy 67.5 +5,498 0.61% ✗ $4.6K
Sep 11, 2023 Sep 12, 2023 DAVIS MICHAEL A / Director Buy 47.5 +399 0.04% ✗ $326.3
Sep 7, 2023 Sep 8, 2023 DAVIS MICHAEL A / Director Buy 78.8 +20,453 2.34% ✗ $15.4K
Sep 5, 2023 Sep 7, 2023 DAVIS MICHAEL A / Director Buy 78.8 +18,520 2.16% ✗ $12.4K
Sep 1, 2023 Kakuk Collette Nicole Chief Strategic Comml Officer Neutral 52.5 - 0.00% ✗ -
Aug 25, 2023 Aug 28, 2023 McElwee Angela May Director Neutral 90.0 +40,506 310.13% ✗ -
Aug 25, 2023 Aug 28, 2023 MULDER DAVID M Director Neutral 90.0 +40,506 55.14% ✗ -
Aug 25, 2023 Aug 28, 2023 Vied David L Director Neutral 90.0 +40,506 42.58% ✗ -
Aug 24, 2023 Aug 28, 2023 DAVIS MICHAEL A / Director Neutral 27.5 -386,646 -31.10% ✗ -
Jul 31, 2023 Aug 1, 2023 Nordin Amy Beth VP, HR, Secretary Sell 27.5 -716 -20.59% ✗ $601.4
Jul 31, 2023 Aug 1, 2023 Hartmann Charles Jason VP, Sales & Marketing Sell 27.5 -670 -38.98% ✗ $562.8