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5%+ stakes · Schedule 13D and 13G

Tessera Defense and Homeland Security Inc. (formerly BiomX Inc.): 5%+ holders

Who has reported owning 5% or more of Tessera Defense and Homeland Security Inc. (formerly BiomX Inc.), from Schedule 13D and 13G filings: each holder's stake as filed, the timeline, and the purpose each 13D states, quoted.

At 5% or more2
Filings18
Latest filing2026-09-17

Tessera Defense and Homeland Security Inc. (formerly BiomX Inc.) has 18 Schedule 13D or 13G filings on record since 2025-08-05. 2 holders' latest filing reports 5% or more of common stock, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.

Holders

HolderPercentSharesLatestEvent date
Reuven Yeganeh19.99%381,422SCHEDULE 13D, 2026-01-262025-12-26
Nantahala Capital Management, LLC7.13%730,551SCHEDULE 13G/A, 2026-08-142026-06-30
Mayers Ventures LLC4.86%130,000SCHEDULE 13D, 2026-09-172026-09-16
James E. Flynn4.7%533,370SCHEDULE 13D/A, 2026-06-162026-06-12
T3 Defense Inc.3.87%156,796SCHEDULE 13D/A, 2026-09-152026-09-15
Alyeska Investment Group, L.P.2.5%38,176SCHEDULE 13G/A, 2026-02-172025-12-31
Cystic Fibrosis Foundation1.5%174,276SCHEDULE 13G/A, 2026-08-202026-06-30
Rodney Hodges0.7%82,618SCHEDULE 13G/A, 2026-08-132026-06-30
Orin Hirschman0.1%38,175SCHEDULE 13G/A, 2026-01-292025-12-31
Morgan Stanley0%0SCHEDULE 13G/A, 2025-08-072025-07-31

Purpose of Transaction (Item 4)

Reuven Yeganeh

The Pyu Pyu acquired the securities described in this Schedule 13D pursuant to various transactions and agreements with the Issuer, including without limitation those discussed in Item 3 of this Schedule 13D, which are incorporated herein by reference. The Reporting Persons intend to review its investment in the Issuer on a continuing basis taking into consideration various factors, including the Issuer's business, financial condition, results of operations and prospects, general economic and industry conditions, the securities markets in general and those for shares of Common Stock of the Issuer, in particular, as well as other developments and other investment opportunities. Based upon such review, the Reporting Persons will take such actions in the future as the Reporting Persons may deem appropriate in light of the circumstances existing from time to time, which may include further acquisitions of shares of Common Stock of the Issuer or disposal of some or all of the shares of Common Stock of the Issuer owned by the Reporting Persons or otherwise acquired by the Reporting Persons, either in the open market or in privately negotiated transactions. Any open market or privately negotiated purchases or sales, acquisition recommendations or proposals or other transactions concerning the Issuer may be made at any time without prior notice. Any alternative may depend upon a variety of factors, including, without limitation, current and anticipated future trading prices of the …The first part of Item 4 of the SCHEDULE 13D filed 2026-01-26; the filing has the rest

Mayers Ventures LLC

The Reporting Persons acquired the shares for investment purposes, and have the right to an additional 65,000 shares as described above. The Reporting Persons may, from time to time, acquire additional shares of Common Stock in the open market, in privately negotiated transactions, or otherwise, or may dispose of all or a portion of the shares of Common Stock held by them, subject to applicable securities law restrictions, including any lock-up or registration requirements. The Reporting Persons may also engage in discussions with the Issuer's management, board of directors, or other stockholders regarding the Issuer's business, management, operations, strategy, or governance. Any such actions will depend upon a variety of factors, including the price and availability of the Common Stock, general market conditions, and other factors deemed relevant by the Reporting Persons. Except as described herein, the Reporting Persons do not currently have any plans or proposals that would relate to or result in any of the actions enumerated in paragraphs (a) through (j) of Item 4 of Schedule 13DItem 4 of the SCHEDULE 13D filed 2026-09-17

Timeline

FiledHolderPercentFiling
2025-08-05Morgan Stanley7.1%SCHEDULE 13G
2025-08-07Morgan Stanley0%SCHEDULE 13G/A
2026-01-26Reuven Yeganeh19.99%SCHEDULE 13D
2026-01-29Orin Hirschman0.1%SCHEDULE 13G/A
2026-02-11James E. Flynn9.99%SCHEDULE 13D/A
2026-02-13Nantahala Capital Management, LLC9.99%SCHEDULE 13G/A
2026-02-17Alyeska Investment Group, L.P.2.5%SCHEDULE 13G/A
2026-04-10T3 Defense Inc.19.87%SCHEDULE 13D
2026-04-14T3 Defense Inc.20.4%SCHEDULE 13D/A
2026-04-15James E. Flynn9.99%SCHEDULE 13D/A
2026-05-14Rodney Hodges5.2%SCHEDULE 13G/A
2026-05-28James E. Flynn8.09%SCHEDULE 13D/A
2026-06-16James E. Flynn4.7%SCHEDULE 13D/A
2026-08-13Rodney Hodges0.7%SCHEDULE 13G/A
2026-08-14Nantahala Capital Management, LLC7.13%SCHEDULE 13G/A
2026-08-20Cystic Fibrosis Foundation1.5%SCHEDULE 13G/A
2026-09-15T3 Defense Inc.3.87%SCHEDULE 13D/A
2026-09-17Mayers Ventures LLC4.86%SCHEDULE 13D

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Where this comes from

Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.

Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.

Cite this page

Permanent URL: https://mentionfox.com/stakes/tessera-defense-and-homeland-security-inc-formerly-biomx
Last updated 2026-09-27
Primary record: SEC filing 1 · SEC filing 2 · SEC filing 3 · SEC filing 4
Tessera Defense and Homeland Security Inc. (formerly BiomX Inc.) 5%+ holders: 2 at 5% or more, largest Reuven Yeganeh 19.99%. MentionFox, 2026-09-27. https://mentionfox.com/stakes/tessera-defense-and-homeland-security-inc-formerly-biomx