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5%+ stakes · Schedule 13D and 13G

Seer, Inc.: 5%+ holders

Who has reported owning 5% or more of Seer, 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 more1
Filings6
Latest filing2026-05-15

Seer, Inc. has 6 Schedule 13D or 13G filings on record since 2025-08-13. 1 holder's latest filing reports 5% or more of class a common stock. Each figure below is the holder's own, as filed, with the filing linked.

Holders

HolderPercentSharesLatestEvent date
Omid Farokhzad12%6,918,732SCHEDULE 13G/A, 2026-05-152026-03-31
Radoff Bradley Louis4.6%2,610,232SCHEDULE 13D/A, 2026-04-132026-04-12
Invus Public Equities, L.P.4.4%2,458,673SCHEDULE 13G/A, 2026-05-042026-03-31

Purpose of Transaction (Item 4)

Radoff Bradley Louis

Item 4 is hereby amended to add the following: On April 13, 2026, the Reporting Persons submitted a non-binding proposal to acquire 100% of the equity of the Issuer at a purchase price of $2.25 per Share in cash, representing a 33% premium to the Issuer's most recent closing price, plus a contingent value right representing the right for stockholders to receive 80% of the net proceeds received from any license, sale or other disposition of the Issuer's business and assets, including PrognomiQ (the "Proposal"). The Proposal is only subject to limited confirmatory due diligence and is based on the availability of at least $215 million of net cash and cash equivalents at closing and is not subject to any financing conditions. The Reporting Persons requested a response regarding the Issuer's board of directors' (the "Board") willingness and availability to discuss the Proposal no later than 5:00pm ET on April 22, 2026, at which point the Proposal will expire. Also on April 13, 2026, Mr. Radoff delivered a letter to the Issuer nominating Howard H. Berman, Joshua S. Horowitz and Luis E. Rinaldini (the "Nominees") for election to the Board at the Issuer's 2026 annual meeting of stockholders (the "Annual Meeting"). Also on April 13, 2026, the Reporting Persons issued a press release (the "Press Release"), which included a copy of the Proposal delivered to the Board and announced the nomination of the Nominees for election to the Board at the Annual Meeting. The foregoing …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-04-13; the filing has the rest

Timeline

FiledHolderPercentFiling
2025-08-13Radoff Bradley Louis2.6%SCHEDULE 13G/A
2026-02-20Radoff Bradley Louis3.7%SCHEDULE 13D
2026-03-02Radoff Bradley Louis4.6%SCHEDULE 13D/A
2026-04-13Radoff Bradley Louis4.6%SCHEDULE 13D/A
2026-05-04Invus Public Equities, L.P.4.4%SCHEDULE 13G/A
2026-05-15Omid Farokhzad12%SCHEDULE 13G/A

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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/seer
Last updated 2026-09-27
Primary record: SEC filing 1 · SEC filing 2 · SEC filing 3 · SEC filing 4
Seer, Inc. 5%+ holders: 1 at 5% or more, largest Omid Farokhzad 12%. MentionFox, 2026-09-27. https://mentionfox.com/stakes/seer