When setting up a Sticky experiment you are asked to enter the amount of completes you are aiming to target. When the system receives that number of completes it will automatically close the experiment and start to process your results. The results will be ready shortly after.
If you are using your own panel and you do not reach the number of completes you originally anticipated, you can close it out on your own.
Go to the "Details" page, and under the experiment status click "Close" button. This will close the experiment early and your results will begin to process. Make sure to also close your own panel since experiment links remain active and can collect new data when the experiment is complete.