Item 1.02 Termination of a Material Definitive Agreement.

On May 3, 2023, Aridis Pharmaceuticals, Inc. (the "Company") sent written notice to Serum AMR Products ("Serum") stating that as of May 8, 2023, the License, Development and Commercialization Agreement between the Company and Serum (the "Agreement") would terminate pursuant to Section 13.3(a) of the Agreement for nonfulfillment of development obligations under the Agreement.

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