Atai Life Sciences N.V., a clinical-stage biopharmaceutical company, develops and invests in various therapeutics to treat depression, anxiety, addiction, and other mental health disorders. Its product candidates include COMP360, a proprietary psilocybin which is in Phase 3 program; BPL-003, an intranasal formulation that is in Phase 2a and 2b clinical studies; TRD; VLS-01, an transmucosal film in Phase 1b clinical studies; and ELE-101, a serotonergic psychedelic that is in Phase 1/2a study, for the treatment of treatment resistant depression. The company also develop IBX-210, an intravenous formulation of ibogaine, and DMX-1002, an oral formulation of ibogaine indicated for the treatment of opioid use disorder; EMP-01, an oral formulation of an R-MDMA derivative being developed for the treatment of post-traumatic stress disorder; and EGX-A and EGX-B, psychedelic-like with novel, non-tryptamine structures with differentiated 5-HT receptor pharmacology. In addition, it offers RL-007, an orally bioavailable compound, which is a pro-cognitive neuromodulator for cognitive impairment associated with schizophrenia; and GRX-917, a deuterated etifoxine for the treatment of generalize anxiety disorder. Further, the company develops PCN-101, a subcutaneous formulation of R-ketamine, as a therapy for psychiatric indications initially focused on TRD; KUR-101, a formulation of deuterated mitragynine for the treatment of OUD; and RLS-01, indicated for treatment resistant depression. ATAI Life Sciences N.V. was founded in 2018 and is headquartered in Berlin, Germany with offices in New York and London.

Oncolytics Biotech Inc., a clinical-stage biopharmaceutical company, focuses on the discovery and development of pharmaceutical products for the treatment of cancer. The company is developing pelareorep, an intravenously delivered immunotherapeutic agent, which is in phase 3 clinical trial for the treatment of hormone receptor-positive / human epidermal growth factor 2-negative metastatic breast cancer and advanced/metastatic pancreatic ductal adenocarcinoma. It has a co-development agreement with Merck KGaA and Pfizer Inc. to co-develop pelareorep, as well as with Roche Holding AG. The company was incorporated in 1998 and is headquartered in Calgary, Canada.

Protagenic Therapeutics, Inc., a biopharmaceutical company, engages in the discovery and development of therapeutics to treat stress-related neuropsychiatric and mood disorders. Its lead compound comprises PT00114, a synthetic form of teneurin carboxy-terminal associated peptide, an endogenous brain signaling peptide that can dampen overactive stress responses. Protagenic Therapeutics, Inc. is headquartered in New York, New York.

Enveric Biosciences, Inc., a biotechnology company, engages in the development of small-molecule therapeutics for the treatment of anxiety, depression, and addiction disorders. Its lead product candidates are EB-002, an active metabolite of psilocybin, which is in preclinical development stage for the treatment of anxiety disorders; and EB-003 that is in preclinical development stage for the treatment mental health. The company also focuses on the development of cannabinoid conjugate molecules for the treatment of pain and cancer. Enveric Biosciences, Inc. is headquartered in Naples, Florida.

Incannex Healthcare Inc., a clinical-stage biopharmaceutical company, engages in the research, development, manufacture, sale, and distribution of psychedelic medicines and therapies for patients with chronic diseases in Australia. The company develops IHL-42X, an oral fixed dose combination of dronabinol and acetazolamide that has completed Phase 2/3 clinical trial for the treatment of obstructive sleep apnea; and PSX-001, an oral synthetic psilocybin treatment in Phase 2b clinical development for patients with generalized anxiety disorder. It is also developing IHL-675A, an oral fixed dose combination drug containing synthetic cannabidiol and hydroxychloroquine sulphate in Phase 2 clinical trial to treat rheumatoid arthritis, as well as lung inflammation, acute respiratory disease, chronic obstructive pulmonary disease, asthma, bronchitis, inflammatory bowel disease, colitis, and Crohn's disease. Incannex Healthcare Inc. is headquartered in Sydney, Australia.

Clearmind Medicine Inc., a clinical pharmaceutical company, develops novel psychedelic medicines to treat under-served health problems in Canada and internationally. It develops treatments for alcohol use disorders, mental health disorder, binge drinking, obesity and metabolic disorder, and eating disorders, as well as depression, binge eating, psychotherapy, and other addiction and binge behaviors. The company also develops MEAI compound which is in IND-enabling study for the treatment of alcohol use disorder; and is in pre-clinical study for treatment of obesity, weight loss, metabolic disorder, and addiction. In addition, it has a collaboration with SciSparc Ltd. to conduct a study evaluating the companies combination treatment for obesity and metabolic syndrome; and with Yissum Research Development Company of the Hebrew University of Jerusalem for the discovery and development of novel psychedelic-derived therapeutics to treat mental disorders. The company was formerly known as Cyntar Ventures Inc. and changed its name to Clearmind Medicine Inc. in March 2021. Clearmind Medicine Inc. was incorporated in 2017 and is based in Vancouver, Canada.

Cybin Inc., a clinical-stage biopharmaceutical company, focuses on developing psychedelic-based therapeutics for patients with mental health conditions. The company's development pipeline includes CYB003, a deuterated psilocybin analog, which is in phase 1/2a clinical trial to treat major depressive disorder (MDD), as well as in preclinical trials for alcohol use disorder; CYB004, a deuterated dimethyltryptamine (DMT), which completed phase 2 clinical trial for treating generalized anxiety disorders; SPL028 injectable deuterated DMT completed phase 1 clinical intramuscular and intravenous trial; SPL026 completed phase 1, 1b, and 1/2a for MDD; and CYB005, a phenethylamine derivative, which in preclinical stage to treat neuroinflammation, as well as has a research pipeline of investigational psychedelic-based compounds. The company has research and collaboration agreement with TMS Neurohealth Centers Inc. for development of psychedelic compound-based therapeutics; Kernel for use of Kernel flow technology to measure neural activity; and Greenbook TMS to establish mental health centers. The company is headquartered in Toronto, Canada.

PaxMedica, Inc., a clinical stage biopharmaceutical company, focuses on the development of anti-purinergic drug therapies for the treatment of disorders with intractable neurologic symptoms. Its lead product candidate is PAX-101 that is in Phase 3 clinical trials, an intravenous formulation of suramin for the treatment of autism spectrum disorder, myalgic encephalomyelitis/chronic fatigue syndrome, long COVID-19 syndrome, fragile X syndrome, human African trypanosomiasis (HAT), and fragile X-associated tremor/ataxia syndrome. The company is developing PAX-102, an intranasal formulation of suramin for neurologic indications, as well as other new chemical entities that are targeted and selective antagonists of purine receptor subtypes; and PAX-HAT-301 for the treatment of HAT. It has a research collaboration agreement with PolarMar Health for Phase II clinical trial in austism spectrum disorder for emodin, which retains the rights for PolarMar to develop and commercialize any non-prescription supplement form of the product, and for PaxMedica, Inc. to retain exclusive rights to develop and commercialize a highly purified form of emodin. The company was formerly known as Purinix Pharmaceuticals LLC and changed its name to PaxMedica, Inc. in April 2020. PaxMedica, Inc. was incorporated in 2018 and is based in Tarrytown, New York.