The SEC form S-3 is a way to allow companies to register to issue new shares in a more simplified manner.

Form 10-K is a financial report that public companies must file every year. It describes the business and its risk factors, as well as its financial condition.

Charged amino acid side chains can form ionic bonds, and polar amino acids are capable of forming hydrogen bonds. Hydrophobic side chains interact with each other via weak van der Waals interactions.