SunAmerica Series Trust

SunAmerica Series Trust is a registered open-end management investment company organized as a Massachusetts business trust and used as a fund platform for insurance-dedicated investment portfolios. Its portfolios are offered primarily through separate accounts of affiliated and unaffiliated life insurance companies and, for some portfolios, to other mutual funds. The trust is part of the SunAmerica/Corebridge variable insurance investment ecosystem rather than a biotechnology, pharmaceutical, or healthcare operating company. It does not develop therapeutics or medical products; instead, it provides investment exposure across multiple asset management strategies through numerous separate portfolios. For a biotech analyst, this entity is best understood as a financial services fund vehicle, not a life sciences company.