Tessera Defense and Homeland Security Inc.

Item 1.01 Entry into a Material Definitive Agreement. As previously disclosed, on April 10, 2026, BiomX Inc. (the “Company”) completed the acquisition of ZorroNet Ltd. (“Zoronet”), and, as part of the consideration therefor, issued to Water IO Ltd. (“Water IO”), the former owner of Zorronet, a promissory note in the original principal amount of $1,250,000, with an original maturity date of July 10, 2026 (the “Note”). On July 27, 2026, the Company and Water IO entered into Amendment No. 1 and Waiver, dated as of July 24, 2026, to the Note (the “Amendment”) pursuant to which (i) the maturity date of the Note was extended from July 10, 2026 to November 1, 2026; (ii) the Company agreed to pay $250,000 of principal within two business days after execution of the Amendment, and the remaining principal in four equal monthly installments of $250,000 each on August 1, September 1, October 1 and November 1, 2026, with the outstanding balance continuing to bear interest at the short-term Applicable Federal Rate payable with the final installment; (iii) in full satisfaction of interest accrued through the date of the Amendment and as consideration for the delay in payment and the waiver and extension, the Company agreed to issue to Water IO 800,000 restricted shares of common stock, subject to clearance of an additional listing application with the NYSE American and written confirmation by each party of its corporate approvals, with an August 31, 2026 longstop after which such amount is payable in cash and no shares will be issued; and (iv) Water IO irrevocably waived, retroactively to the original maturity date, any default, event of default or right of acceleration arising from the non-payment of the Note at its original maturity date, and confirmed that the Note has not been accelerated. An independent member of the Company’s Board of Directors also serves as an independent director of Water IO. The Amendment was approved by the Company’s Board of Directors, including the Audit Committee, in accordance with the Company’s related person transaction policy, with the interested director abstaining. The foregoing description of the Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the Amendment, a copy of which is attached hereto as Exhibit 10.1 and is incorporated herein by reference.

Item 3.02 Unregistered Sales of Equity Securities. The information set forth in Item 1.01 of this Current Report on Form 8-K is incorporated by reference into this Item 3.02. The shares of common stock issued pursuant to the Amendment will be issued without registration under the Securities Act of 1933, as amended, in reliance upon the exemption from registration provided by Section 4(a)(2) thereof and/or Regulation S thereunder, and will constitute restricted securities.