Insider Transactions Reported by 17 Insiders of CYANOTECH CORP

Symbol
CYAN on OTC
Location
Kailua Kona, HI

There are no Buy or Sell transactions made by insiders since 13 Mar 2025

CYANOTECH CORP executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Michael A. Davis Director, 10%+ Owner $1,359,454 28 Aug 2025
David L. Vied Director $148,867 28 Aug 2025
David M. Mulder Director $130,448 28 Aug 2025
Gerald R. Cysewski Chief Scientific Officer $59,989 29 Jul 2025
Nancy E. Katz Director $55,395 18 Oct 2021
Angela May McElwee Director $53,567 25 Aug 2023
Walter Bennett Menzel Director $39,455 30 Aug 2022
Glenn Jensen VP, Operations $16,834 29 Jul 2025
Jennifer M. Johansen VP, Quality, Regulatory & Govt $4,383 29 Jul 2025
Felicia I. Ladin CFO, VP Fin & Admin, Treasurer $4,157 29 Jul 2024
Amy Beth Nordin VP, HR, Secretary $4,141 29 Jul 2025
Charles Jason Hartmann VP, Sales & Marketing $4,028 29 Jul 2024
Matthew Keith Custer President and CEO, Director $2,104 29 Jul 2025
Collette Nicole Kakuk Chief Strategic Comml Officer $1,470 07 Apr 2025
Jennifer Kimberly Brand VP of Sales 19 May 2025
Jennifer Charlene Rogerson CFO,VP Fin & Admin, Treasurer 05 Sep 2024
Jennifer A.s. Miyashiro CFO, VP Fin & Admin, Treasurer 12 Sep 2025

Recent Insider Transactions by Companies or Individuals for CYANOTECH CORP

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Jennifer A.s. Miyashiro CYAN Cyanotech Common Stock Options Award 50,000 50,000 12 Sep 2025 Direct
David M. Mulder CYAN Cyanotech Corporation Common Stock Award 32.6% 50,000 203,468 28 Aug 2025 Direct
David L. Vied CYAN Cyanotech Corporation Common Stock Award 28.6% 50,000 225,138 28 Aug 2025 Direct
Michael A. Davis CYAN Cyanotech Corporation Common Stock Award 3.38% 50,000 1,528,598 28 Aug 2025 By self as trustee of the Michael Arlen Davis Revocable Trust
Matthew Keith Custer CYAN Common Stock Options Exercise 44.4% 2,075 6,754 29 Jul 2025 Direct
Matthew Keith Custer CYAN Restricted Stock Units Options Exercise -3.13% -2,075 64,137 29 Jul 2025 Direct
Amy Beth Nordin CYAN Common Stock Tax liability -5.48% -525 9,051 29 Jul 2025 Direct
Amy Beth Nordin CYAN Common Stock Options Exercise 18.6% 1,502 9,576 29 Jul 2025 Direct
Amy Beth Nordin CYAN Restricted Stock Units Options Exercise -97.8% -1,502 34 29 Jul 2025 Direct
Jennifer M. Johansen CYAN Common Stock Tax liability -5.05% -518 9,743 29 Jul 2025 Direct
Jennifer M. Johansen CYAN Common Stock Options Exercise 15.5% 1,380 10,261 29 Jul 2025 Direct
Jennifer M. Johansen CYAN Restricted Stock Units Options Exercise -97.6% -1,380 34 29 Jul 2025 Direct
Gerald R. Cysewski CYAN Common Stock Tax liability -0.4% -592 146,697 29 Jul 2025 Direct
Gerald R. Cysewski CYAN Common Stock Options Exercise 1.08% 1,577 147,289 29 Jul 2025 Direct
Gerald R. Cysewski CYAN Restricted Stock Units Options Exercise -97.9% -1,577 34 29 Jul 2025 Direct
Glenn Jensen CYAN Common Stock Tax liability -2.23% -617 27,110 29 Jul 2025 Direct
Glenn Jensen CYAN Common Stock Options Exercise 6.29% 1,642 27,727 29 Jul 2025 Direct
Glenn Jensen CYAN Restricted Stock Units Options Exercise -98% -1,642 34 29 Jul 2025 Direct
Matthew Keith Custer CYAN Restricted Stock Units Award 64,103 4,679 16 Jun 2025 Direct
Matthew Keith Custer CYAN Cyanotech common stock options Award 150,000 150,000 16 Jun 2025 Direct
Jennifer Kimberly Brand CYAN Cyanotech common stock options Award 50,000 50,000 19 May 2025 Direct
Amy Beth Nordin CYAN Cyanotech common stock options Award 75,000 75,000 19 May 2025 Direct
Glenn Jensen CYAN Cyanotech common stock options Award 25,000 25,000 19 May 2025 Direct
Collette Nicole Kakuk CYAN Common Stock Tax liability -0.3% -14 4,707 07 Apr 2025 Direct
Collette Nicole Kakuk CYAN Common Stock Options Exercise 0.7% 33 4,721 07 Apr 2025 Direct
Collette Nicole Kakuk CYAN Restricted Stock Units Options Exercise -49.2% -33 34 07 Apr 2025 Direct
Amy Beth Nordin CYAN Common Stock Tax liability -0.15% -12 8,074 07 Apr 2025 Direct
Amy Beth Nordin CYAN Common Stock Options Exercise 0.41% 33 8,086 07 Apr 2025 Direct
Amy Beth Nordin CYAN Restricted Stock Units Options Exercise -2.1% -33 1,536 07 Apr 2025 Direct
Jennifer M. Johansen CYAN Common Stock Tax liability -0.15% -13 8,881 07 Apr 2025 Direct
Jennifer M. Johansen CYAN Common Stock Options Exercise 0.37% 33 8,894 07 Apr 2025 Direct
Jennifer M. Johansen CYAN Restricted Stock Units Options Exercise -2.28% -33 1,414 07 Apr 2025 Direct
Glenn Jensen CYAN Common Stock Tax liability -0.05% -13 26,085 07 Apr 2025 Direct
Glenn Jensen CYAN Common Stock Options Exercise 0.13% 33 26,098 07 Apr 2025 Direct
Glenn Jensen CYAN Restricted Stock Units Options Exercise -1.93% -33 1,676 07 Apr 2025 Direct
Matthew Keith Custer CYAN Common Stock Options Exercise 0.71% 33 4,679 07 Apr 2025 Direct
Matthew Keith Custer CYAN Restricted Stock Units Options Exercise -1.54% -33 2,109 07 Apr 2025 Direct
Gerald R. Cysewski CYAN Common Stock Tax liability -0.01% -13 145,712 07 Apr 2025 Direct
Gerald R. Cysewski CYAN Common Stock Options Exercise 0.02% 33 145,725 07 Apr 2025 Direct
Gerald R. Cysewski CYAN Restricted Stock Units Options Exercise -2.01% -33 1,611 07 Apr 2025 Direct
Collette Nicole Kakuk CYAN Common Stock Tax liability -24.9% -1,556 4,688 18 Feb 2025 Direct
Collette Nicole Kakuk CYAN Common Stock Options Exercise 166.4% 3,900 6,244 18 Feb 2025 Direct
Collette Nicole Kakuk CYAN Restricted Stock Units Options Exercise -100% -3,900 0 18 Feb 2025 Direct
Amy Beth Nordin CYAN Common Stock Tax liability -12.9% -1,189 8,053 18 Feb 2025 Direct
Amy Beth Nordin CYAN Common Stock Options Exercise 58.2% 3,400 9,242 18 Feb 2025 Direct
Amy Beth Nordin CYAN Restricted Stock Units Options Exercise -68.4% -3,400 1,569 18 Feb 2025 Direct
Jennifer M. Johansen CYAN Common Stock Tax liability -11.9% -1,201 8,861 18 Feb 2025 Direct
Jennifer M. Johansen CYAN Common Stock Options Exercise 46.6% 3,200 10,062 18 Feb 2025 Direct
Jennifer M. Johansen CYAN Restricted Stock Units Options Exercise -68.9% -3,200 1,447 18 Feb 2025 Direct
Glenn Jensen CYAN Common Stock Tax liability -4.89% -1,340 26,065 18 Feb 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.