Yes, you'll need to report this 1099-K on your tax return. While the 1099-K issuer must provide a 1099-K if the reportable payments are $5,000 or more, they may provide a 1099-K with any amount on it. Not receiving a 1099-K because the amount received was under the reporting threshold does not excuse individuals from reporting taxable income.
Here's some information you may find helpful: What is Form 1099-K?
