A Study of ALG-055009 in Healthy Volunteers and Subjects With Hyperlipidemia

Inclusion Criteria for Healthy Subjects: 1. Male and Female between 18 and 55 years old 2. BMI 18.0 to 32.0 kg/m\^2 Inclusion Criteria for Subjects with Mild Hyperlipidemia: 1. Male and Female between 18 and 65 years old 2. BMI 18.0 to 35.0 kg/m\^2 3. Subject must be on a stable diet for the 3 months prior to screening with a fasting LDL-C level \>110 mg/dL at screening Exclusion Criteria for All Subjects: 1. Subjects with any current or previous illness that, in the opinion of the Investigator, might confound the results of the study or pose an additional risk in administering study drug to the subject or that could prevent, limit, or confound the protocol specified assessments or study results' interpretation 2. Subjects with Hepatitis A, B, C or HIV-1/HIV-2 infection or acute infections such as SARS- CoV-2 infection 3. Subjects with renal dysfunction (e.g., estimated creatinine clearance \<90 mL/min/1.73 m\^2 at screening, calculated by the Chronic Kidney Disease Epidemiology Collaboration \[CKD-EPI\] formula) 4. Subjects with history of thyroid disorder or abnormal thyroid function tests at screening or known sensitivity to thyroid medications 5. Subjects receiving, or urgently requiring, any lipid lowering therapy