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Cyanotech - 39 Year Stock Price History | CYAN

Historical daily share price chart and data for Cyanotech since 1986 adjusted for splits and dividends. The latest closing stock price for Cyanotech as of July 11, 2025 is 0.46.
  • The all-time high Cyanotech stock closing price was 62.52 on December 03, 1986.
  • The Cyanotech 52-week high stock price is 0.89, which is 93.5% above the current share price.
  • The Cyanotech 52-week low stock price is 0.23, which is 50% below the current share price.
  • The average Cyanotech stock price for the last 52 weeks is 0.49.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
  
Cyanotech Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2025 0.3722 0.3602 0.4600 0.2300 0.4600 26.10%
2024 0.5225 0.8903 0.9438 0.2100 0.3648 -59.01%
2023 0.9426 1.0431 1.4393 0.6301 0.8899 -19.10%
2022 2.5399 3.2400 3.4600 0.9200 1.1000 -66.05%
2021 3.1908 3.2200 4.1400 2.7200 3.2400 6.58%
2020 2.4533 2.3500 3.1715 1.9000 3.0400 32.75%
2019 2.8566 3.0700 4.0500 2.2100 2.2900 -24.17%
2018 4.0196 3.9000 5.6295 3.0200 3.0200 -22.74%
2017 4.0747 4.7000 5.1000 3.2500 3.9090 -9.09%
2016 4.5151 5.1100 5.6500 3.4300 4.3000 -18.10%
2015 7.5242 6.9000 10.2500 5.1000 5.2501 -24.24%
2014 5.1413 4.7000 7.8400 4.4100 6.9300 40.57%
2013 5.2096 4.7200 6.4900 4.2401 4.9299 6.48%
2012 7.0777 6.8800 11.3500 4.6000 4.6300 -33.38%
2011 4.0774 3.1400 9.0900 2.6000 6.9500 105.62%
2010 2.8062 5.3701 5.5800 1.5500 3.3800 -36.05%
2009 2.3372 1.4300 5.6800 1.1200 5.2850 261.99%
2008 1.6208 1.2301 2.1200 1.0500 1.4600 4.29%
2007 1.4357 1.8000 2.3500 0.7900 1.4000 -25.53%
2006 2.3408 2.6400 3.4000 1.6200 1.8800 -27.69%
2005 4.1015 5.7160 5.8000 2.2400 2.6000 -54.86%
2004 5.6047 6.8000 8.6000 4.4000 5.7600 -23.40%
2003 2.4732 1.7960 7.5200 1.6000 7.5200 370.00%
2002 3.0992 4.2000 5.4800 1.2400 1.6000 -60.00%
2001 3.9299 3.7500 6.4400 2.0000 4.0000 28.01%
2000 6.9935 6.6248 15.0000 2.6248 3.1248 -50.00%
1999 3.8366 4.2500 8.5000 2.1248 6.2500 47.06%
1998 10.2966 11.0000 17.5000 3.8752 4.2500 -61.80%
1997 21.8634 27.7500 31.5000 10.1248 11.1248 -56.80%
1996 29.2308 45.5000 45.5000 23.0000 25.7500 -46.35%
1995 17.7344 5.5000 55.5000 4.2500 48.0000 753.36%
1994 4.9883 5.7500 6.5000 3.2500 5.6248 2.27%
1993 5.8929 4.7500 8.0000 4.0000 5.5000 29.41%
1992 4.1833 1.3760 8.5000 1.2520 4.2500 325.00%
1991 2.4155 2.5000 4.2520 1.0000 1.0000 0.00%
1989 11.3647 13.7500 16.5800 6.5800 7.2000 -52.98%
1988 17.9798 14.7000 23.7500 10.9375 15.3125 11.36%
1987 34.6078 47.5200 55.6400 11.8750 13.7500 -71.06%
Sector Industry Market Cap Revenue
Medical Medical - Drug Manufacturing $0.003B $0.024B
CYANOTECH CORP. develops and commercializes natural products from microalgae. Co. is currently producing microalgae products for the nutritional supplement and immunological diagnostics markets and is also developing microalgae-based products for the aquaculture feed/pigments, biopesticide and food coloring markets. Microalgae are a diverse group of over 30,000 species of microscopic plants which have a wide range of physiological and biochemical characteristics and naturally contain high levels of nutrients.
Stock Name Country Market Cap PE Ratio
Chugai Pharmaceutical (CHGCY) Japan $76.549B 28.72
Zoetis (ZTS) United States $69.297B 25.85
Takeda Pharmaceutical (TAK) Japan $47.856B 9.52
Daiichi Sankyo, - (DSNKY) Japan $42.661B 21.86
BeOne Medicines - (ONC) Cayman Islands $27.635B 0.00
Sandoz Group AG (SDZNY) Switzerland $24.908B 0.00
Summit Therapeutics (SMMT) United States $18.864B 0.00
Merck (MKKGY) Germany $16.659B 12.21
Shionogi (SGIOY) Japan $14.241B 14.27
United Therapeutics (UTHR) United States $13.427B 11.88
Neurocrine Biosciences (NBIX) United States $13.373B 45.81
Orion OYJ (ORINY) Finland $11.038B 29.85
IPSEN (IPSEY) France $10.299B 0.00
Stevanato Group S.p.A (STVN) Italy $7.768B 47.50
Corcept Therapeutics (CORT) United States $7.717B 62.73
Madrigal Pharmaceuticals (MDGL) United States $7.102B 0.00
Ionis Pharmaceuticals (IONS) United States $6.772B 0.00
Grifols, S.A (GRFS) Spain $6.683B 0.00
Hikma Pharmaceuticals Plc (HKMPF) United Kingdom $6.153B 0.00
Ono Pharmaceutical (OPHLF) Japan $5.265B 16.01
Soleno Therapeutics (SLNO) United States $4.171B 0.00
Crinetics Pharmaceuticals (CRNX) United States $3.092B 0.00
Hypermarcas (HYPMY) Brazil $3.025B 19.90
AMNEAL PHARMACEUTICALS, INC (AMRX) United States $2.639B 14.27
Catalyst Pharmaceuticals (CPRX) United States $2.637B 9.24
NewAmsterdam Pharma (NAMS) Netherlands $2.489B 0.00
Centessa Pharmaceuticals (CNTA) United Kingdom $2.021B 0.00
BioCryst Pharmaceuticals (BCRX) United States $1.875B 0.00
Ocular Therapeutix (OCUL) United States $1.795B 0.00
ARS Pharmaceuticals (SPRY) United States $1.758B 0.00
Endo (NDOI) United States $1.588B 0.00
Evotec AG (EVO) Germany $1.463B 0.00
Harrow (HROW) United States $1.307B 0.00
Guardian Pharmacy Services (GRDN) United States $1.290B 0.00
Aurinia Pharmaceuticals Inc (AUPH) Canada $1.221B 24.43
Enliven Therapeutics (ELVN) United States $1.129B 0.00
Ardelyx (ARDX) United States $1.103B 0.00
ProKidney (PROK) United States $1.080B 0.00
Collegium Pharmaceutical (COLL) United States $1.055B 5.69
Akebia Therapeutics (AKBA) United States $1.043B 0.00
Dyne Therapeutics (DYN) United States $1.013B 0.00
Verve Therapeutics (VERV) United States $0.983B 0.00
Avadel Pharmaceuticals (AVDL) Ireland $0.971B 0.00
Xeris Biopharma Holdings (XERS) United States $0.851B 0.00
Cronos Group (CRON) Canada $0.798B 0.00
KalVista Pharmaceuticals (KALV) United States $0.760B 0.00
Amylyx Pharmaceuticals (AMLX) United States $0.750B 0.00
Zevra Therapeutics (ZVRA) United States $0.699B 0.00
Xencor (XNCR) United States $0.630B 0.00
Relay Therapeutics (RLAY) United States $0.610B 0.00
USANA Health Sciences (USNA) United States $0.607B 13.19
Elite Pharmaceuticals (ELTP) United States $0.575B 0.00
Theravance Biopharma (TBPH) United States $0.574B 0.00
Organogenesis (ORGO) United States $0.570B 0.00
Bioventus (BVS) United States $0.559B 14.19
Oruka Therapeutics (ORKA) United States $0.550B 0.00
Siga Technologies (SIGA) United States $0.490B 10.24
Tourmaline Bio (TRML) United States $0.487B 0.00
Savara (SVRA) United States $0.434B 0.00
Aquestive Therapeutics (AQST) United States $0.400B 0.00
Rigel Pharmaceuticals (RIGL) United States $0.346B 9.35
Altimmune (ALT) United States $0.346B 0.00
Heron Therapeutics (HRTX) United States $0.323B 0.00
Tonix Pharmaceuticals Holding (TNXP) United States $0.315B 0.00
AleAnna (ANNA) United States $0.314B 0.00
Nektar Therapeutics (NKTR) United States $0.303B 0.00
Aldeyra Therapeutics (ALDX) United States $0.300B 0.00
Nature's Sunshine Products (NATR) United States $0.292B 26.76
OmniAb (OABI) United States $0.250B 0.00
Nanobiotix S.A (NBTX) France $0.243B 0.00
Esperion Therapeutics (ESPR) United States $0.234B 0.00
MediWound (MDWD) Israel $0.221B 0.00
Larimar Therapeutics (LRMR) United States $0.221B 0.00
4D Molecular Therapeutics (FDMT) United States $0.203B 0.00
China SXT Pharmaceuticals (SXTC) China $0.193B 0.00
Galectin Therapeutics (GALT) United States $0.180B 0.00
Profound Medical (PROF) Canada $0.173B 0.00
Journey Medical (DERM) United States $0.173B 0.00
Aclaris Therapeutics (ACRS) United States $0.171B 0.00
Liminatus Pharma (LIMN) United States $0.165B 0.00
Avita Medical (RCEL) United States $0.155B 0.00
Lexeo Therapeutics (LXEO) United States $0.147B 0.00
Inhibikase Therapeutics (IKT) United States $0.144B 0.00
Lyell Immunopharma (LYEL) United States $0.143B 0.00
Protara Therapeutics (TARA) United States $0.122B 0.00
Korro Bio (KRRO) United States $0.122B 0.00
Ironwood Pharmaceuticals (IRWD) United States $0.119B 0.00
Champions Oncology (CSBR) United States $0.110B 18.11
Cardiol Therapeutics (CRDL) Canada $0.110B 0.00
Innate Pharma SA (IPHYF) France $0.110B 0.00
Cassava Sciences (SAVA) United States $0.104B 0.00
Corbus Pharmaceuticals Holdings (CRBP) United States $0.102B 0.00
VAXART, INC (VXRT) United States $0.098B 0.00
Achieve Life Sciences (ACHV) Canada $0.095B 0.00
Jupiter Neurosciences (JUNS) United States $0.093B 0.00
Nutriband (NTRB) United States $0.090B 0.00
Vivani Medical (VANI) United States $0.088B 0.00
Metagenomi (MGX) United States $0.084B 0.00
ESSA Pharma (EPIX) Canada $0.083B 0.00
Arch Biopartners (ACHFF) Canada $0.082B 0.00
Dominari Holdings (DOMH) United States $0.078B 0.00
Rafael Holdings (RFL) United States $0.078B 0.00
Fractyl Health (GUTS) United States $0.077B 0.00
Verrica Pharmaceuticals (VRCA) United States $0.075B 0.00
Pyxis Oncology (PYXS) United States $0.074B 0.00
Surrozen (SRZN) United States $0.074B 0.00
PMV Pharmaceuticals (PMVP) United States $0.070B 0.00
Inotiv (NOTV) United States $0.066B 0.00
Assertio Holdings (ASRT) United States $0.066B 0.00
Context Therapeutics (CNTX) United States $0.066B 0.00
Wellgistics Health (WGRX) United States $0.062B 0.00
Unicycive Therapeutics (UNCY) United States $0.062B 0.00
Allergy Therapeutics (AGYTF) United Kingdom $0.059B 0.00
Klotho Neurosciences (KLTO) United States $0.058B 0.00
Gain Therapeutics (GANX) United States $0.056B 0.00
NRx Pharmaceuticals (NRXP) United States $0.056B 0.00
ElectroCore (ECOR) United States $0.055B 0.00
Avalo Therapeutics (AVTX) United States $0.053B 0.00
Century Therapeutics (IPSC) United States $0.052B 0.00
Cumberland Pharmaceuticals (CPIX) United States $0.051B 37.78
Prelude Therapeutics (PRLD) United States $0.046B 0.00
Mural Oncology (MURA) Ireland $0.044B 0.00
Acrivon Therapeutics (ACRV) United States $0.042B 0.00
Karyopharm Therapeutics (KPTI) United States $0.041B 0.00
Vivos Therapeutics (VVOS) United States $0.041B 0.00
Iterum Therapeutics (ITRM) Ireland $0.040B 0.00
Telomir Pharmaceuticals (TELO) United States $0.035B 0.00
PolyPid (PYPD) Israel $0.035B 0.00
SCYNEXIS (SCYX) United States $0.032B 0.00
FibroGen (FGEN) United States $0.031B 0.00
Enlivex Therapeutics (ENLV) Israel $0.030B 0.00
Tempest Therapeutics (TPST) United States $0.025B 0.00
Scienture Holdings (SCNX) United States $0.022B 0.00
Natural Alternatives (NAII) United States $0.021B 0.00
Relmada Therapeutics (RLMD) United States $0.021B 0.00
Reviva Pharmaceuticals Holdings (RVPH) United States $0.021B 0.00
VYNE Therapeutics (VYNE) United States $0.020B 0.00
BioLineRx (BLRX) Israel $0.020B 0.00
Carisma Therapeutics (CARM) United States $0.019B 0.00
MARKER THERAPEUTICS, INC (MRKR) United States $0.018B 0.00
Citius Pharmaceuticals (CTXR) United States $0.018B 0.00
ProPhase Labs (PRPH) United States $0.018B 0.00
CASI Pharmaceuticals (CASI) China $0.018B 0.00
DURECT (DRRX) United States $0.017B 0.00
Plus Therapeutics (PSTV) United States $0.017B 0.00
Lipocine (LPCN) United States $0.017B 0.00
Mannatech (MTEX) United States $0.016B 0.00
Ernexa Therapeutics (ERNA) United States $0.014B 0.00
Cosmos Health (COSM) United States $0.014B 0.00
TherapeuticsMD (TXMD) United States $0.014B 0.00
Minerva Neurosciences (NERV) United States $0.012B 2.17
BioVie (BIVI) United States $0.012B 0.00
Ainos (AIMD) United States $0.012B 0.00
Phio Pharmaceuticals (PHIO) United States $0.012B 0.00
Lyra Therapeutics (LYRA) United States $0.012B 0.00
Talphera (TLPH) United States $0.010B 0.00
Addex Therapeutics (ADXN) Switzerland $0.010B 0.00
Kiora Pharmaceuticals (KPRX) United States $0.009B 0.00
XTL Biopharmaceuticals (XTLB) Israel $0.009B 0.00
Traws Pharma (TRAW) United States $0.009B 0.00
Mangoceuticals (MGRX) United States $0.008B 0.00
Biomerica (BMRA) United States $0.008B 0.00
NLS Pharmaceutics (NLSP) Switzerland $0.008B 0.00
TransCode Therapeutics (RNAZ) United States $0.008B 0.00
Nuvilex (PMCB) United States $0.008B 0.00
Indaptus Therapeutics (INDP) United States $0.007B 0.00
Incannex Healthcare (IXHL) Australia $0.007B 0.00
Alaunos Therapeutics (TCRT) United States $0.007B 0.00
Sonoma Pharmaceuticals (SNOA) United States $0.006B 0.00
Qualigen Therapeutics (QLGN) United States $0.006B 0.00
Xenetic Biosciences (XBIO) United States $0.006B 0.00
Quoin Pharmaceuticals (QNRX) United States $0.005B 0.00
Aptorum Group (APM) United Kingdom $0.005B 0.00
Redhill Biopharma (RDHL) Israel $0.005B 0.00
Clearmind Medicine (CMND) Canada $0.004B 0.00
SciSparc (SPRC) Israel $0.004B 0.00
InMed Pharmaceuticals (INM) Canada $0.004B 0.00
SHINECO (SISI) China $0.004B 0.00
Galmed Pharmaceuticals (GLMD) Israel $0.003B 0.00
CERo Therapeutics Holdings (CERO) United States $0.003B 0.00
XORTX Therapeutics (XRTX) Canada $0.003B 0.00
60 Degrees Pharmaceuticals (SXTP) United States $0.003B 0.00
PainReform (PRFX) Israel $0.003B 0.00
Heatwurx (PCSA) United States $0.003B 0.00
Aditxt (ADTX) United States $0.003B 0.00
Jaguar Animal Health (JAGX) United States $0.002B 0.00
Conduit Pharmaceuticals (CDT) United States $0.002B 0.00
Shuttle Pharmaceuticals Holdings (SHPH) United States $0.002B 0.00
TNF Pharmaceuticals (TNFA) United States $0.001B 0.00
Salarius Pharmaceuticals (SLRX) United States $0.001B 0.00
Universe Pharmaceuticals INC (UPC) China $0.000B 0.00
Indivior (INDV) United States $0.000B 9.13
4D Pharma (LBPS) United Kingdom $0.000B 0.00
MEI Pharma (MEIP) United States $0.000B 0.00
Patheon (PTHN) Netherlands $0.000B 0.00
RVL Pharmaceuticals (RVLP) United States $0.000B 0.00
Silence Therapeutics (SLN) United Kingdom $0.000B 0.00