A Research Study to Compare Two Different Forms of Once-weekly Semaglutide in Two Different Injection Pens

Inclusion Criteria: * Male or female, aged 18-65 years (both inclusive) at the time of signing informed consent. * Body mass index (BMI) between 25.0 and 34.9 kg/m\^2 (both inclusive) at screening. Overweight should be due to excess adipose tissue, as judged by the investigator. * Body weight between 65.0 and 130.0 kg (both inclusive). * Considered to be generally healthy based on the medical history, physical examination, and the results of vital signs, electrocardiogram and clinical laboratory tests performed during the screening visit, as judged by the investigator. Exclusion Criteria: * Female who is pregnant, breast-feeding or intends to become pregnant or is of child-bearing potential and not using highly effective contraceptive methods. * Any disorder which in the investigator's opinion might jeopardise subject's safety, evaluation of results, or compliance with the protocol. * Use of prescription medicinal products or non-prescription drugs or herbal products, except routine vitamins, topical medication, highly effective contraceptives and occasional use of paracetamol and acetylsalicylic acid (the two latter are not allowed within 24 hours before screening), within 14 days prior to the day of screening. * Abuse or intake of alcohol, defined as any of the below: * Known or suspected alcohol abuse within 1 year prior to the day of screening (defined as regular intake of more than an average intake of 24 g alcohol daily for men and 12 g alcohol daily for women -12 g of alcohol equals about 300 mL of beer or lager, 100 mL of wine, or 25 mL spirits) * Positive alcohol test at screening * Abuse or intake of drugs, defined as any of the below: * Known or suspected drug/chemical substance abuse within 1 year prior to the day of screening * Positive drug of abuse test at screening