da opção...

Como pode-se deduzir de:

Vesting Date = A date on which options Vest.

Vest = An option is said to vest when the holder is eligible to Exercise it. Typically, options vest over time according to a prescribed Vesting schedule.

Vesting schedule = The timetable that specifies when options Vest, or become exerciseable. A typical vesting schedule is 25% per year on the anniversary of the grant date. That means that after one year up to 25% percent of the options granted may be exercised; after two years, up to 50%; after three years, up to 75%; after four years, all of the grant.

http://www.smeal.psu.edu/faculty/huddart/OptionGlossary/inde...

Vest Date = For participants in employee stock option plans: Generally the date on which the ‘optionee’ may first exercise the stock options as defined in the grant agreement.

Vesting Options = For participants in employee stock option plans: Options that are available for exercise subject to the terms of the plan.

Vesting = For participants in employee stock option plans: The period of time over which your grant becomes partially or wholly exercisable as defined by the terms of your company's plan.

http://www.fs.ml.com/help/glossary.asp?term=v

Vest = Over time, option holders gain the right to exercise their options. The gaining of this right is considering Vesting.

http://www.myoptionvalue.com/movschool/Glossary/U_V/Vest.htm...

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Note added at 2003-02-20 17:36:42 (GMT)
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Se estiver relacionada a legislação brasileira, então:

BENEFICIO PROPORCIONAL DIFERIDO (VESTING)

http://www.fetecpr.org.br/juridico/default18.asp

A separação conhecida como \"vesting\" ( direito adquirido) foi regulamentada com o nome de Beneficio Proporcional Diferido (BPD) e não incluiu a questão do resgate. Pelo BPD, o participante deixa de contribuir, mas fica no fundo e quando se aposenta recebe um benefício proporcional ao tempo em que houve contribuição.

http://www.bancariosdf.com.br/html/noticias/2002/previdencia...

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Note added at 2003-02-20 17:42:27 (GMT)
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Em dicionário En = Pt/Pt, então:

Vesting = Direitos adquiridos

http://www.gesbanha.pt/manag/dic_v.htm