Welcome to our dedicated page for Seer SEC filings (Ticker: SEER), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Seer, Inc.'s SEC filings document material events, operating results, securityholder rights and governance matters for a Nasdaq-listed life sciences company focused on research-use proteomics. Recent 8-K reports cover results of operations and financial condition, material definitive agreements, modifications to securityholder rights, other events and related exhibits.
The filings disclose Seer's Class A common stock, Preferred Stock Purchase Rights, Tax Benefit Preservation Plan for net operating loss and other tax attributes, amendments to that plan, and the completed conversion of Class B common stock into Class A common stock. They also record board and shareholder matters, leadership appointments, and intellectual-property updates related to the Proteograph Product Suite and particle-based protein enrichment.
Seer, Inc. (SEER) officer David R. Horn, who serves as President & CFO, reported a tax-related sale of company stock. On 11/19/2025, he sold 6,797 shares of Class A common stock at a price of $1.9714 per share. The filing notes that these shares were sold to satisfy his tax obligations arising from the vesting of restricted stock units. After this transaction, he beneficially owned 436,802 shares of Seer Class A common stock, held directly.
Seer, Inc. (SEER) reported a routine insider transaction by its CEO and Chair, who is also a director. On 11/19/2025, the executive sold 33,838 shares of Class A common stock at a price of $1.9714 per share.
The company notes that these shares were sold to cover the reporting person's tax obligations arising from the vesting of restricted stock units. Following this transaction, the executive directly beneficially owns 1,238,230 shares of Seer common stock.
Seer, Inc. (SEER) filed its Q3 2025 report, showing steady revenue and narrowed losses. Total revenue was $4.1 million with gross profit of $2.1 million. Operating expenses fell to $21.5 million from $26.3 million a year ago, reducing the quarterly net loss to $18.2 million from $21.3 million. For the first nine months, revenue reached $12.4 million (up 22% year over year) and net loss improved to $57.6 million.
Cash, cash equivalents and investments totaled $251.2 million as of September 30, 2025, and operating cash use was $33.6 million year to date. The company repurchased 1,006,400 shares in Q3 for $2.0 million and 5,232,886 shares year to date for $10.1 million, with $3.1 million remaining under authorization. International sales represented 48% of Q3 revenue, and two customers accounted for 15% and 10% of quarterly revenue.
The company highlighted its May launch of the Proteograph ONE Assay and SP200 instrument. Class B common stock will automatically convert into Class A on December 9, 2025.
Seer, Inc. (SEER) furnished an earnings update by issuing a press release announcing results for the quarter ended September 30, 2025. The press release is attached as Exhibit 99.1 and incorporated by reference for informational purposes. The company stated that the Item 2.02 information and Exhibit 99.1 are furnished, not filed, under the Exchange Act, which means they are not subject to Section 18 liabilities and are not incorporated into other filings by reference. The report was signed by President and Chief Financial Officer David Horn.
Seer, Inc. is soliciting proxies for a Special Meeting to vote on an amendment to its certificate of incorporation to change the date when Class B common stock will automatically convert into Class A common stock (Proposal No. 1) and a related proposal to approve adjournments if additional voting is needed (Proposal No. 2). Stockholders of record may vote by Internet, telephone, mail or virtually during the meeting and can submit questions in advance or in real time. The proxy card designates named proxies who will vote shares per stockholder instructions or, if no instruction is given, in accordance with the board's recommendations. The disclosure lists key beneficial holders and option positions, including reported shared voting power by SoftBank entities with 5,135,383 Class A shares and other institutional holders reporting multi‑million share positions. Aggregated insider holdings and exercisable options within 60 days of September 30, 2025 are reported for directors and named executives.
Seer, Inc. (SEER) director Ro Isaac received equity awards on 09/02/2025 consisting of 41,000 restricted stock units (RSUs) and a stock option for 61,000 shares with a $2.04 exercise price. The RSUs and the option shares vest in three equal annual installments beginning on September 2, 2026, and the option expires September 2, 2035. After the reported transactions, Mr. Isaac beneficially owns 41,000 Class A shares and holds options covering 61,000 shares. The Form 4 was filed by one reporting person and executed under power of attorney.
Seer, Inc. reported an Initial Statement of Beneficial Ownership dated 09/02/2025 for reporting person Ro Isaac, filed on 09/03/2025 by power of attorney. The form lists the reporting person as a Director and indicates that no securities are beneficially owned by this individual at the time of the report. The filing is a standalone Form 3 filed by one reporting person and contains no entries in Table I (non-derivative) or Table II (derivative) because the explanation states explicitly that no securities are held. This means the director has not reported direct or indirect ownership of the issuer's stock on this initial SEC Section 16 filing.
Insider sale to cover taxes: This Form 4 shows David R. Horn, President & CFO of Seer, Inc. (SEER), sold 6,827 shares of Class A common stock on 08/20/2025 at a reported price of $2.0441 per share. The filing states the shares were sold to satisfy the reporting person’s tax obligations arising from the vesting of restricted stock units (RSUs). After the sale, Mr. Horn is reported to beneficially own 436,802 shares, held directly. The form is a single-person filing and includes the signer’s manual signature dated 08/21/2025.
Seer, Inc. insider sale by CEO and Chair — Omid Farokhzad, who serves as both a director and the company's CEO and Chair, reported the sale of 33,992 shares of Class A common stock on 08/20/2025 at a price of $2.0441 per share. Following the reported disposition, the filing shows beneficial ownership of 1,272,068 shares. The filing states the shares were sold to satisfy the reporting person's tax obligations arising from the vesting of restricted stock units (RSUs). The Form 4 was filed by one reporting person and executed under power of attorney on 08/21/2025.
Seer, Inc. reporting shows the Radoff Family Foundation directly owns 190,000 Class A shares and a Charitable Account holds 30,000 shares. Bradley L. Radoff is reported as directly owning 1,179,422 shares in Item 4, and when combined with the Foundation and Charitable Account holdings he is associated with 1,399,422 shares, representing approximately 2.6% of Seer’s ~54.8 million outstanding Class A shares. The filing indicates Mr. Radoff has sole voting and dispositive power over the majority of his direct holdings and shared power over the 190,000 Foundation shares.
The document contains an apparent inconsistency: the cover page lists sole voting/dispositive power as 1,209,422 for Mr. Radoff while Item 4 reports 1,179,422 directly owned shares; the filing does not reconcile this difference.