EsOS

ESOs is an acronym used to refer to several distinct concepts in business, science, and administration. Common meanings include Employee Stock Options, the European Southern Observatory, and Executive Support Officers. The intended meaning typically depends on the field and context.

Employee Stock Options (ESOs) are equity compensation granting employees the right to buy company shares at a fixed price for a set period. Vesting, tax treatment, and accounting vary by jurisdiction. ESOs can dilute existing shareholders, and employees may gain or lose depending on stock performance. Expensing is typically recognized over the vesting period.

European Southern Observatory (ESO) is an intergovernmental astronomy organization operating facilities in Chile and Europe, including the Paranal and La Silla Observatories and collaborations like ALMA. The acronym ESOs is sometimes used informally to refer to the network of ESO facilities.

Executive Support Officers (ESOs) are administrators who support executives, handling calendars, travel, communications, and project coordination. They may work in government, business, or nonprofits, combining traditional administrative duties with strategic support and cross-department liaison.

Other, less common uses exist for the acronym ESOs, but context usually clarifies the intended meaning.