Your leaving the company has no impact on whether you need to file a K-1.
The company is responsible for the filing of the applicable entity tax return and K-1's. You will be sent a K-1, just as you were in prior years, for the period in which you were there. The K-1 should be marked final.
Additionally, you should be maintaining a schedule of your basis. You will need to update the basis schedule for the final K-1 activity. This will determine your overall gain or loss on your investment in this company.