How to claim stock options from a company based in Nairobi?

Hi, I am working in a start up based in Nairobi Kenya from the last 3 and half year. I was offered stock options (1417 Nos) with one year cliff and three year quarterly vesting schedule. For the first two years I was based in Nairobi Kenya and after that I came back to India and started working based out of Bangalore. After two years of employment contract, the contract was extended for 9 months. After completion of 2 years and 9 months, the contract was changed to consulting contract (because of ease in handling the income tax in case of working as a consultant). This consulting contract was for 6 months and then renewed for 2 months and then again for 1 month ( So total 9 months of working as a consultant). Now I am leaving the company. I want to know how can I claim the stock options??