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SEC EDGAR Form 4 ↗
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© 2026 InsiderTradingScreener.com. Data from SEC EDGAR Form 4 filings.For informational purposes only. Not financial advice.

Home/Companies/Cyanotech Corporation

Cyanotech Corporation

39 insider trades tracked

CYAN

Insider trades

39

Bought (open market)

$5K

Sold (open market)

$0

Unique insiders

12

Recent insider trades

Most recent Form 4 filings for Cyanotech Corporation.

Miyashiro Jennifer A.S.granted50,000 shares ofCYANat $0Sep 16Details
Vied David Lgranted50,000 shares ofCYANat $0Sep 2Details
MULDER DAVID Mgranted50,000 shares ofCYANat $0Sep 2Details
DAVIS MICHAEL A /granted50,000 shares ofCYANat $0

Insiders at this company

Executives and directors who have filed Form 4s.

Jensen Glenn8 trades
Nordin Amy Beth6 trades
Johansen Jennifer M.6 trades
Cysewski Gerald R6 trades
Kakuk Collette Nicole4 trades
Hartmann Charles Jason2 trades
Ladin Felicia I2 trades
Custer Matthew Keith1 trades

Explore insider screeners

Latest CEO & CFO Purchases Latest CEO & CFO Sales Director Purchases Officer Purchases Top Purchases This Week Top Sales This Week Top Officer Buys (Month)10% Owner Filings 10b5-1 Planned Trades Discretionary Trades Buy/Sell Ratios Politician–Insider Overlap

Custer Matthew Keithexercised2,075 shares ofCYANat $0Jul 31Details

Nordin Amy Bethtax-withheld525 shares ofCYANat $0.405$213Jul 31Details

Nordin Amy Bethexercised1,502 shares ofCYANat $0Jul 31Details

Johansen Jennifer M.tax-withheld518 shares ofCYANat $0.405$210Jul 31Details

Johansen Jennifer M.exercised1,380 shares ofCYANat $0Jul 31Details

Jensen Glenntax-withheld617 shares ofCYANat $0.405$250Jul 31Details

Jensen Glennexercised1,642 shares ofCYANat $0Jul 31Details

Cysewski Gerald Rtax-withheld592 shares ofCYANat $0.405$240Jul 31Details

Cysewski Gerald Rexercised1,577 shares ofCYANat $0Jul 31Details

Kakuk Collette Nicoletax-withheld1,556 shares ofCYANat $0.4$622Feb 20Details

Kakuk Collette Nicoleexercised3,900 shares ofCYANat $0Feb 20Details

Nordin Amy Bethtax-withheld1,189 shares ofCYANat $0.4$476Feb 20Details

Nordin Amy Bethexercised3,400 shares ofCYANat $0Feb 20Details

Johansen Jennifer M.tax-withheld1,201 shares ofCYANat $0.4$480Feb 20Details

Johansen Jennifer M.exercised3,200 shares ofCYANat $0Feb 20Details

Jensen Glenntax-withheld1,340 shares ofCYANat $0.4$536Feb 20Details

Jensen Glennexercised3,570 shares ofCYANat $0Feb 20Details

Cysewski Gerald Rtax-withheld1,464 shares ofCYANat $0.4$586Feb 20Details

Cysewski Gerald Rexercised3,900 shares ofCYANat $0Feb 20Details

Jensen Glennbought8,500 shares ofCYANat $0.33$3KFeb 27Details

Jensen Glennbought8,335 shares ofCYANat $0.29$2KFeb 27Details

Ladin Felicia Itax-withheld1,465 shares ofCYANat $0.44$645Feb 21Details

Ladin Felicia Iexercised3,900 shares ofCYANat $0Feb 21Details

Cysewski Gerald Rtax-withheld1,465 shares ofCYANat $0.44$645Feb 21Details

Cysewski Gerald Rexercised3,900 shares ofCYANat $0Feb 21Details

Jensen Glenntax-withheld1,341 shares ofCYANat $0.44$590Feb 21Details

View all trades for CYAN →

DAVIS MICHAEL A /

1 trades

MULDER DAVID M1 trades

Vied David L1 trades

Miyashiro Jennifer A.S.1 trades

Cyanotech Corporation (CYAN) — Insider Trading Activity | Insider Trading Screener