{"url_path":"/sec/cpmv/10-q/2026/body","section_key":"body","section_title":"Body","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-20","source_url":"https://www.sec.gov/Archives/edgar/data/836564/0001683168-26-004152-index.html","accession_number":"0001683168-26-004152","cik":"0000836564","ticker":"CPMV","issuer_name":"Mosaic ImmunoEngineering Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/836564/0001683168-26-004152-index.html","primary_entity_key":"0000836564","primary_entity_name":"Mosaic ImmunoEngineering Inc."},"word_count":544,"has_tables":true,"body_markdown":"EX-31.1\n2\nmosaic_ex3101.htm\nCERTIFICATION\n\nExhibit 31.1\n\n**CERTIFICATION PURSUANT TO RULE 13A-14 OR 15D-14\nOF THE SECURITIES EXCHANGE ACT OF 1934**\n\n**AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY\nACT OF 2002**\n\nI, Steven King, President and Chief Executive\nOfficer of the registrant, certify that:\n\n1. I have reviewed this\nQuarterly Report on Form 10-Q for the quarter ended March 31, 2026 of Mosaic ImmunoEngineering, Inc., a Delaware corporation (the “Registrant”);\n\n2. Based on my knowledge,\nthis report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements\nmade, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;\n\n3. Based on my knowledge,\nthe financial statements, and other financial information included in this report, fairly present in all material respects the financial\ncondition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;\n\n4. The Registrant’s\nother certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange\nAct Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f))\nfor the Registrant and have:\n\na) Designed\nsuch disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under my supervision, to ensure\nthat material information relating to the Registrant, including its consolidated subsidiaries, is made known to me by others within those\nentities, particularly during the period in which this report is being prepared;\n\nb) Designed\nsuch internal control over financial reporting, or caused such internal control over financial reporting to be designed under my supervision,\nto provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external\npurposes in accordance with generally accepted accounting principles;\n\nc) Evaluated\nthe effectiveness of the Registrant's disclosure controls and procedures and presented in this report my conclusions about the effectiveness\nof the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and\n\nd) Disclosed\nin this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent\nquarter (the Registrant's fourth quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially\naffect, the Registrant’s internal control over financial reporting; and\n\n5. The Registrant’s\nother certifying officer and I have disclosed, based on my most recent evaluation of internal control over financial reporting, to the\nRegistrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):\n\na) All significant\ndeficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely\nto adversely affect the Registrant's ability to record, process, summarize and report financial information; and\n\nb) Any fraud,\nwhether or not material, that involves management or other employees who have a significant role in the Registrant's internal control\nover financial reporting.\n\nDate: May 20, 2026\n\n*/s/ Steven King*\n\nSteven King\n\nPresident, Chief Executive Officer and Chief Financial\nOfficer, Director\n\n(Principal Executive Officer and Principal Financial and Accounting\nOfficer)"}