MERCURY SYSTEMS INC 10-Q

ITEM 5. OTHER INFORMATION 10b5-1 Plans During the second quarter ended December 26, 2025, none of the Company’s directors or executive officers adopted , modified or terminated a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement as each term is defined in Section 408(a) of Regulation S-K. 40 ITEM 6. EXHIBITS The following Exhibits are filed or furnished, as applicable, herewith: 10.1* Form of Indemnification Agreement between the Company and each of its Directors and Executive Officers 31.1 Certification of the Company’s Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 31.2 Certification of the Company’s Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 32.1+ Certification of the Company’s Chief Executive Officer and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 101.INS eXtensible Business Reporting Language (XBRL) Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document 101.SCH XBRL Taxonomy Extension Schema Document 101.CAL XBRL Taxonomy Extension Calculation Linkbase Document 101.DEF XBRL Taxonomy Extension Definition Linkbase Document 101.LAB XBRL Taxonomy Extension Label Linkbase Document 101.PRE XBRL Taxonomy Extension Presentation Linkbase Document 104 Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101) * Identifies a management contract or compensatory plan in which an executive officer or director of the Company participates. + Furnished herewith. This certificate shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended. 41 MERCURY SYSTEMS, INC. Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in Andover, Massachusetts, on February 3, 2026. MERCURY SYSTEMS, INC. By: / S / DAVID E. FARNSWORTH David E. Farnsworth Executive Vice President, Chief Financial Officer 42