A Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety and Efficacy of EB05 + SOC vs. Placebo + SOC in Adult Hospitalized Patients With COVID-19

Open to people ages 18 years and up

1. Men and women ≥18 years of age at the time of consent.
2. Laboratory-confirmed diagnosis of COVID-19.
3. Hospitalized for COVID-19 related respiratory disease.
4. Patient belongs to one of the following two categories in the nine-point COVID-19 severity scale:
   1. Hospitalized, requiring intubation and mechanical ventilation - Level 6 of the nine-point COVID-19 severity scale.
   2. Hospitalized and intubated with additional organ support - pressors, RRT, ECMO - Level 7 of the nine-point COVID-19 severity scale.
5. For women of childbearing potential involved in any sexual intercourse that could lead to pregnancy: Negative pregnancy test and willingness to use contraceptive (consistent with local regulations) during the study period.
6. Signed informed consent obtained by any patient capable of giving consent, or, when the patient is not capable of giving consent, from his or her legal/authorized representatives.

1. The subject is a female who is breastfeeding or pregnant.
2. Known hypersensitivity to EB05 or its excipients.
3. In the opinion of the investigator, death is imminent and inevitable or patient will be discharged within the next 48 - 72 hours, irrespective of the provision of treatment.
4. Experiencing cardiac arrest while hospitalized with COVID-19.
5. Active participation in other immunomodulator or immunosuppressant drug clinical trials.
   1. Participation in COVID-19 antiviral, anticoagulant and convalescent plasma trials may be permitted; however, the decision to enroll a patient who is participating in other clinical trials will be dealt with on a case-by-case basis.
6. Treatment with immunomodulator or immunosuppressant drugs, including but not limited to TNF inhibitors and anti-IL-1 agents within 5 half-lives or 30 days (whichever is longer) before randomization. Except for the following, which are permitted:
   1. Treatment with immunomodulator, or immunosuppressant drugs, such as corticosteroids, as part of SOC for COVID-19
   2. Transplant patients
7. Known other clinical conditions that contraindicate EB05 and cannot be treated or solved according to the judgment of the clinician.
8. Patient has been intubated or mechanically ventilated for more than 72 hours prior to administration of the investigational product.

9. Patient has been intubated and then extubated during the current hospitalization prior to administration of the investigational product.

   10. Patient has experienced meaningful clinical improvement in the severity of disease

   prior to administration of the investigational product.