# EDGAR Filing Document

**Accession Number:** 0001380585
**File Stem:** 0000921895-26-000515
**Filing Date:** 2026-2
**Character Count:** 41611
**Document Hash:** 82e3b43265868c86b3b7edc0c550629e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000921895-26-000515.hdr.sgml**: 20260220

**ACCESSION NUMBER**: 0000921895-26-000515

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 4

**FILED AS OF DATE**: 20260220

**DATE AS OF CHANGE**: 20260220

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Seer, Inc.
- **CENTRAL INDEX KEY:** 0001726445
- **STANDARD INDUSTRIAL CLASSIFICATION:** LABORATORY ANALYTICAL INSTRUMENTS [3826]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 821153150
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91912
- **FILM NUMBER:** 26657308

**BUSINESS ADDRESS:**
- **STREET 1:** 3800 BRIDGE PARKWAY, SUITE 102
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94065
- **BUSINESS PHONE:** 650-453-0000

**MAIL ADDRESS:**
- **STREET 1:** 3800 BRIDGE PARKWAY, SUITE 102
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94065

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Seer Biosciences, Inc.
- **DATE OF NAME CHANGE:** 20171226
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Radoff Bradley Louis
- **CENTRAL INDEX KEY:** 0001380585

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D

**MAIL ADDRESS:**
- **STREET 1:** 2727 KIRBY DRIVE
- **STREET 2:** UNIT 29L
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098

## Ex-1

Exhibit 1

**<u>Directors and Officers of The Radoff Family Foundation</u>**

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;<u>Name and Position</u> | &nbsp;&nbsp;<u>Principal Occupation</u> | &nbsp;&nbsp;<u>Principal Business Address</u> | &nbsp;&nbsp;<u>Citizenship</u> |
| &nbsp;&nbsp;Bradley L. Radoff<br> Director<sup>\*</sup> |  |  |  |
| &nbsp;&nbsp;Rose Radoff<br> Director and Secretary | &nbsp;&nbsp;Director and Secretary | &nbsp;&nbsp;2727 Kirby Drive, Unit 29L Houston, Texas 77098 | &nbsp;&nbsp;United States |
| &nbsp;&nbsp;Russell Radoff<br> Director | &nbsp;&nbsp;Medical Doctor | &nbsp;&nbsp;Medical Clinic of Houston, L.L.P.<br> 1701 Sunset Boulevard<br> Houston, Texas 77005 | &nbsp;&nbsp;United States |

---

------

<sup>\*</sup> Mr. Radoff is a Reporting Person and, as such, the information with respect to Mr. Radoff called for by the Schedule 13D is set forth therein.

## Ex-2

Exhibit 2

**<u>Transactions in the Securities of the Issuer During the Past 60 Days</u>**

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;<u>Nature of the Transaction</u> | &nbsp;&nbsp; Amount of Securities<br> <u>Purchased/(Sold)</u> | &nbsp;&nbsp;<u>Price ($)</u> | &nbsp;&nbsp; Date of<br> <u>Purchase/Sale</u> |

---

**<u>THE RADOFF FAMILY FOUNDATION</u>**

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;15000 | &nbsp;&nbsp;1.8369 | &nbsp;&nbsp;12/30/2025 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8627 | &nbsp;&nbsp;01/08/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10600 | &nbsp;&nbsp;1.8676 | &nbsp;&nbsp;01/08/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;9156 | &nbsp;&nbsp;1.8789 | &nbsp;&nbsp;01/09/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8707 | &nbsp;&nbsp;01/16/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10844 | &nbsp;&nbsp;1.8802 | &nbsp;&nbsp;01/16/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.7966 | &nbsp;&nbsp;02/04/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8058 | &nbsp;&nbsp;02/05/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;20000 | &nbsp;&nbsp;1.7979 | &nbsp;&nbsp;02/06/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8318 | &nbsp;&nbsp;02/11/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8353 | &nbsp;&nbsp;02/11/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8314 | &nbsp;&nbsp;02/11/2026 |

---

**<u>BRADLEY L. RADOFF</u>**

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;50000 | &nbsp;&nbsp;1.8515 | &nbsp;&nbsp;12/22/2025 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8289 | &nbsp;&nbsp;12/26/2025 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8495 | &nbsp;&nbsp;12/26/2025 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8844 | &nbsp;&nbsp;01/02/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;20000 | &nbsp;&nbsp;1.8215 | &nbsp;&nbsp;01/02/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8050 | &nbsp;&nbsp;02/02/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8099 | &nbsp;&nbsp;02/02/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8099 | &nbsp;&nbsp;02/02/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.7766 | &nbsp;&nbsp;02/03/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.7910 | &nbsp;&nbsp;02/03/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.7973 | &nbsp;&nbsp;02/03/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;5469 | &nbsp;&nbsp;1.8200 | &nbsp;&nbsp;02/04/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;94531 | &nbsp;&nbsp;1.8300 | &nbsp;&nbsp;02/04/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;23085 | &nbsp;&nbsp;1.7963 | &nbsp;&nbsp;02/04/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;3387 | &nbsp;&nbsp;1.7893 | &nbsp;&nbsp;02/04/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;50000 | &nbsp;&nbsp;1.7905 | &nbsp;&nbsp;02/05/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.7995 | &nbsp;&nbsp;02/09/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8027 | &nbsp;&nbsp;02/09/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;100000 | &nbsp;&nbsp;1.8090 | &nbsp;&nbsp;02/09/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8050 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8100 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8115 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8100 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8100 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8158 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8159 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8152 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8203 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;5513 | &nbsp;&nbsp;1.8278 | &nbsp;&nbsp;02/10/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8296 | &nbsp;&nbsp;02/11/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;10000 | &nbsp;&nbsp;1.8495 | &nbsp;&nbsp;02/11/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;8015 | &nbsp;&nbsp;1.8629 | &nbsp;&nbsp;02/11/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;47111 | &nbsp;&nbsp;2.0203 | &nbsp;&nbsp;02/17/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;250000 | &nbsp;&nbsp;2.0015 | &nbsp;&nbsp;02/18/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;102889 | &nbsp;&nbsp;2.0558 | &nbsp;&nbsp;02/19/2026 |

---

**<u>JEC II ASSOCIATES, LLC</u>**

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;547779 | &nbsp;&nbsp;1.8422 | &nbsp;&nbsp;02/11/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;207599 | &nbsp;&nbsp;1.8880 | &nbsp;&nbsp;02/12/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;69152 | &nbsp;&nbsp;1.9759 | &nbsp;&nbsp;02/13/2026 |
| &nbsp;&nbsp;Purchase of Common Stock | &nbsp;&nbsp;225470 | &nbsp;&nbsp;2.0144 | &nbsp;&nbsp;02/17/2026 |

---

**<u>THE MOS TRUST</u>**

Purchase of Common Stock 41,636 1.8532 12/24/2025 <br> Purchase of Common Stock 100,000 1.8354 02/11/2026

## Exhibit 99.1

Exhibit 99.1

**<u>GROUP AGREEMENT</u>**

This Agreement (this "<u>Agreement</u>") is made and entered into as of February 20, 2026 (the "<u>Effective Date</u>") by and among (i) The Radoff Family Foundation and Bradley L. Radoff (collectively, "<u>Radoff</u>") and (ii) JEC II Associates, LLC, The MOS Trust, MOS PTC, LLC and Michael Torok (collectively, "<u>JEC</u>" and together with Radoff, each a "<u>Party</u>" and collectively, the "<u>Parties</u>" or the "<u>Group</u>").

WHEREAS, certain of the undersigned are stockholders, direct or beneficial, of Seer, Inc., a Delaware corporation (the "<u>Company</u>"); and

WHEREAS, the Parties desire to (i) coordinate their activities with respect to the Company, (ii) take all other action necessary to achieve the foregoing and (iii) take any other actions the Group determines to undertake in connection with their respective investment in the Company (the "<u>Coordinated Activities</u>").

NOW, THEREFORE, in consideration of the foregoing premises and the mutual covenants and agreements contained herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties, intending to be legally bound hereby, agree as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.Each of the undersigned agrees to form a "<u>group</u>" (as such term is defined in Section 13(d)(3) of the Securities Exchange Act of 1934, as amended (the "<u>Exchange Act</u>")) with respect to the securities of the Company. In furtherance of the foregoing and in accordance with Rule 13d-1(k)(1)(iii) under the Exchange Act, each of the undersigned agrees to the joint filing on behalf of each of them of statements on Schedule 13D, and any amendments thereto, with respect to the securities of the Company to the extent required by applicable law. Each member of the Group shall be responsible for the accuracy and completeness of its own disclosure therein, and shall not be responsible for the accuracy and completeness of the information concerning the other members of the Group, unless such member knows or has reason to know that such information is inaccurate.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.So long as this Agreement is in effect, each of the undersigned shall provide written notice to Olshan Frome Wolosky LLP ("<u>Olshan</u>"), such notice to be given no later than four (4) hours after each such transaction, of (i) any of their purchases or sales of securities of the Company, or (ii) any securities of the Company over which they acquire or dispose of beneficial ownership; *<u>provided</u>*, *<u>however</u>*, that each Party agrees not to purchase or sell securities of the Company or otherwise increase or decrease its economic exposure to or beneficial ownership over the securities of the Company if it reasonably believes that, as a result of such action, the Group or any member thereof would be likely to be required to make any regulatory filing (including, but not limited to, a Schedule 13D or amendment thereto, Form 3 or Form 4 with the Securities and Exchange Commission (the "<u>SEC</u>")) without using its reasonable efforts to give the other members of the Group at least twelve (12) hours prior written notice; *<u>provided</u>*, *<u>further</u>*, that no Party shall, without the prior consent of a representative of each of Radoff and JEC, (i) buy, or increase any beneficial ownership over, any securities of the Company if, as a result of such action, the Group would beneficially own more than 9.99% of the Company's outstanding shares of common stock or (ii) sell, or dispose of any beneficial ownership over, any securities of the Company prior to the 2026 annual meeting of stockholders of the Company. For purposes of this Agreement, the term "<u>beneficial ownership</u>" shall have the meaning of such term set forth in Rule 13d-3 under the Exchange Act.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.Each of the undersigned agrees to form the Group for the purpose of the Coordinated Activities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.Radoff and JEC hereby agree to jointly pay all expenses and costs (including all legal fees) incurred in connection with the Group's activities (the "<u>Expenses</u>") on a pro rata basis based on the number of shares of the Company beneficially owned in the aggregate by such Party. The pro rata portion of Expenses shall be adjusted each month based on such Party's respective ownership percentage as of the last day of the preceding month. Any reimbursement from the Company regarding the Expenses paid pursuant to this Section 4 shall be split by the Parties in proportion to the Expenses paid pursuant to this Section 4.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.Each Party agrees that any filing with the SEC, press release or other communication proposed to be made or issued by the Group or any member of the Group in connection with the Group's activities shall first be approved by a representative of Radoff and JEC. Radoff and JEC agree to work in good faith to resolve any disagreement that may arise between or among them concerning decisions to be made, actions to be taken or statements to be made in connection with the Group's activities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.The relationship of the Parties shall be limited to carrying on the business of the Group in accordance with the terms of this Agreement. Such relationship shall be construed and deemed to be for the sole and limited purpose of carrying on such business as described herein. Nothing herein shall be construed to authorize any Party to act as an agent for any other Party, or to create a joint venture or partnership, or to constitute an indemnification. Each Party agrees to use his or its reasonable efforts to avoid taking any action that may cause any other person or entity to be deemed to be a member of the Group without the prior consent of a representative of each of Radoff and JEC. Except as provided in Section 2, nothing herein shall restrict any Party's right to purchase or sell securities of the Company, as he or it deems appropriate, in his or its sole discretion, provided that all such purchases and sales are made in compliance with all applicable securities laws and the provisions of this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.This Agreement may be executed in two or more counterparts, which together shall constitute a single agreement. Any signature to this Agreement transmitted by facsimile transmission, by electronic mail in "portable document format" (".pdf") form or by any other electronic means intended to preserve the original graphic and pictorial appearance of a document shall have the same effect as physical delivery of the paper document bearing the original signature.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.This Agreement is governed by and will be construed in accordance with the laws of the State of New York. In the event of any dispute arising out of the provisions of this Agreement or their investment in the Company, the Parties consent and submit to the exclusive jurisdiction of the United States District Court for the Southern District of New York located in the Borough of Manhattan or the courts of the State of New York located in the County of New York.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.This Agreement shall terminate on the earliest to occur of (i) 11:59 p.m. (New York time) on the second anniversary of the Effective Date, (ii) the conclusion of the Coordinated Activities or (iii) the mutual written agreement of Radoff and JEC; *<u>provided</u>*, *<u>however</u>*, that should any disagreement arise concerning the Coordinated Activities that cannot be resolved between the Parties, any dissatisfied Party shall have a 24-hour opportunity to withdraw from the Group and terminate its responsibilities hereunder prior to further public or private communications being made on behalf of the Group. In the event of termination, the Parties shall cooperate to take such actions as may be necessary or required publicly to disclose such termination and/or the consequences thereof, including, without limitation, amending any prior filings under the Exchange Act concerning the Company or the relationship of the Parties. Notwithstanding the foregoing, Section 4 (solely with respect to Expenses incurred prior to the termination of this Agreement) and Section 8 shall survive any termination of this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.Each Party hereby waives the application of any law, regulation, holding, or rule of construction providing that ambiguities in an agreement or other document will be construed against the party drafting such agreement or document.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.The terms and provisions of this Agreement may not be modified, waived or amended without the written consent of each of the Parties.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.Each Party acknowledges that Olshan shall act as counsel for both the Group and Radoff relating to their investment in the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.Each Party hereby agrees that this Agreement shall be filed as an exhibit to any Schedule 13D required to be filed under applicable law pursuant to Rule 13d-1(k)(1)(iii) under the Exchange Act.

[*Signature Pages Follow*]

IN WITNESS WHEREOF, the Parties hereto have caused this Agreement to be executed as of the day and year first above written.

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;The Radoff Family Foundation | &nbsp;&nbsp;The Radoff Family Foundation | &nbsp;&nbsp;The Radoff Family Foundation |
| &nbsp;&nbsp;By: | &nbsp;&nbsp; /s/ Bradley L. Radoff | &nbsp;&nbsp; /s/ Bradley L. Radoff |
|  | &nbsp;&nbsp;Name: | &nbsp;&nbsp;Bradley L. Radoff |
|  | &nbsp;&nbsp;Title: | &nbsp;&nbsp;Director |

---

---

| |
|:---|
| &nbsp;&nbsp;/s/ Bradley L. Radoff |
| &nbsp;&nbsp;Bradley L. Radoff |

---

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;JEC II Associates, LLC | &nbsp;&nbsp;JEC II Associates, LLC | &nbsp;&nbsp;JEC II Associates, LLC |
| &nbsp;&nbsp;By: | &nbsp;&nbsp; /s/ Michael Torok | &nbsp;&nbsp; /s/ Michael Torok |
|  | &nbsp;&nbsp;Name: | &nbsp;&nbsp;Michael Torok |
|  | &nbsp;&nbsp;Title: | &nbsp;&nbsp;Manager |

---

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;The MOS Trust | &nbsp;&nbsp;The MOS Trust | &nbsp;&nbsp;The MOS Trust |
| &nbsp;&nbsp;By: | &nbsp;&nbsp; MOS PTC, LLC<br> Trustee | &nbsp;&nbsp; MOS PTC, LLC<br> Trustee |
| &nbsp;&nbsp;By: | &nbsp;&nbsp; /s/ Michael Torok | &nbsp;&nbsp; /s/ Michael Torok |
|  | &nbsp;&nbsp;Name: | &nbsp;&nbsp;Michael Torok |
|  | &nbsp;&nbsp;Title: | &nbsp;&nbsp;Manager |

---

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;MOS PTC, LLC | &nbsp;&nbsp;MOS PTC, LLC | &nbsp;&nbsp;MOS PTC, LLC |
| &nbsp;&nbsp;By: | &nbsp;&nbsp; /s/ Michael Torok | &nbsp;&nbsp; /s/ Michael Torok |
|  | &nbsp;&nbsp;Name: | &nbsp;&nbsp;Michael Torok |
|  | &nbsp;&nbsp;Title: | &nbsp;&nbsp;Manager |

---

---

| |
|:---|
| &nbsp;&nbsp; /s/ Michael Torok |
| &nbsp;&nbsp;Michael Torok |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**Seer, Inc.**

*(Name of Issuer)*

**Class A Common Stock, par value $0.00001 per share**

*(Title of Class of Securities)*

**81578P106**

*(CUSIP Number)*

**BRADLEY L. RADOFF**<br>2727 Kirby Drive, Unit 29L<br>Houston TX 77098<br>713-482-2196

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**02/12/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **81578P106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Radoff Family Foundation** | Name of reporting person<br>**Radoff Family Foundation** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**TEXAS** | Citizenship or place of organization<br>**TEXAS** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**500000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**500000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**500000.00** | Aggregate amount beneficially owned by each reporting person<br>**500000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.9%** | Percent of class represented by amount in Row (11)<br>**0.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **81578P106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Radoff Bradley Louis** | Name of reporting person<br>**Radoff Bradley Louis** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**1600000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**500000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**1600000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**500000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**2100000.00** | Aggregate amount beneficially owned by each reporting person<br>**2100000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**3.7%** | Percent of class represented by amount in Row (11)<br>**3.7%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

| **CUSIP No.** | **81578P106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**JEC II Associates, LLC** | Name of reporting person<br>**JEC II Associates, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**1050000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**1050000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**1050000.00** | Aggregate amount beneficially owned by each reporting person<br>**1050000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**1.9%** | Percent of class represented by amount in Row (11)<br>**1.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

| **CUSIP No.** | **81578P106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**The MOS Trust** | Name of reporting person<br>**The MOS Trust** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**WYOMING** | Citizenship or place of organization<br>**WYOMING** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**215000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**215000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**215000.00** | Aggregate amount beneficially owned by each reporting person<br>**215000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.4%** | Percent of class represented by amount in Row (11)<br>**0.4%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

| **CUSIP No.** | **81578P106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**MOS PTC, LLC** | Name of reporting person<br>**MOS PTC, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**WYOMING** | Citizenship or place of organization<br>**WYOMING** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**215000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**215000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**215000.00** | Aggregate amount beneficially owned by each reporting person<br>**215000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.4%** | Percent of class represented by amount in Row (11)<br>**0.4%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

| **CUSIP No.** | **81578P106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Torok Michael** | Name of reporting person<br>**Torok Michael** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**285000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**1265000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**285000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**1265000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**1550000.00** | Aggregate amount beneficially owned by each reporting person<br>**1550000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**2.8%** | Percent of class represented by amount in Row (11)<br>**2.8%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class A Common Stock, par value $0.00001 per share

**(b) Name of Issuer:**
Seer, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
3800 BRIDGE PARKWAY, SUITE 102, REDWOOD CITY, CA, 94065

**Item 4. Purpose of Transaction**

The Reporting Persons purchased the Shares based on the Reporting Persons' belief that the Shares, when purchased, were undervalued and represented an attractive investment opportunity. Depending upon overall market conditions, other investment opportunities available to the Reporting Persons, and the availability of Shares at prices that would make the purchase or sale of Shares desirable, the Reporting Persons may endeavor to increase or decrease their position in the Issuer through, among other things, the purchase or sale of Shares on the open market or in private transactions or otherwise, on such terms and at such times as the Reporting Persons may deem advisable.

The Reporting Persons have engaged, and intend to continue to engage, in communications with the Issuer's Board of Directors (the "Board") and management team regarding opportunities to enhance stockholder value, including commencing a strategic review process and potential changes to the composition of the Board. The Reporting Persons intend to discuss their views with respect to the foregoing matters with the Issuer, its stockholders and other market participants.

No Reporting Person has any present plan or proposal which would relate to or result in any of the matters set forth in subparagraphs (a) - (j) of Item 4 of Schedule 13D except as set forth herein or such as would occur upon or in connection with completion of, or following, any of the actions discussed herein. Depending on various factors including, without limitation, the Issuer's financial position and investment strategy, the price levels of the Shares, conditions in the securities markets and general economic and industry conditions, the Reporting Persons may in the future take such actions with respect to their investment in the Issuer as they deem appropriate including, without limitation, engaging in additional communications with management and the Board of the Issuer, engaging in discussions with stockholders of the Issuer or third parties, including potential acquirers and service providers about the Issuer and the Reporting Persons' investment, making proposals to the Issuer concerning changes to the capital allocation strategy, capitalization, ownership structure, including a sale of the Issuer as a whole or in parts (in which the Reporting Persons may participate), Board structure (including Board composition) or operations of the Issuer, purchasing additional Shares, selling some or all of their Shares, engaging in short selling of or any hedging or similar transaction with respect to the Shares, or changing their intention with respect to any and all matters referred to in Item 4.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The aggregate percentage of Shares reported owned by each person named herein is based on 56,251,522 Shares outstanding as of December 9, 2025, which is the total number of Shares outstanding as disclosed in the Issuer's Current Report on Form 8-K filed with the Securities and Exchange Commission on December 12, 2025.

As of the date hereof, the Radoff Foundation directly beneficially owned 500,000 Shares, constituting approximately 0.9% of the Shares outstanding.

As of the date hereof, Mr. Radoff directly beneficially owned 1,600,000 Shares, constituting approximately 2.8% of the Shares outstanding. Mr. Radoff, as a director of the Radoff Foundation, may be deemed the beneficial owner of the 500,000 Shares owned by the Radoff Foundation, which together with the 1,600,000 Shares he directly owns, constitutes an aggregate of 2,100,000 Shares beneficially owned by Mr. Radoff, constituting approximately 3.7% of the Shares outstanding.

As of the date hereof, JEC II directly beneficially owned 1,050,000 Shares, constituting approximately 1.9% of the Shares outstanding.

As of the date hereof, MOS Trust directly beneficially owned 215,000 Shares, constituting approximately 0.4% of the Shares outstanding. MOS PTC, as the trustee of MOS Trust, may be deemed the beneficial owner of the 215,000 Shares owned by MOS Trust, constituting approximately 0.4% of the Shares outstanding.

As of the date hereof, Mr. Torok directly beneficially owned 285,000 Shares, constituting approximately 0.5% of the Shares outstanding. Mr. Torok, (i) as the Manager of JEC II, may be deemed the beneficial owner of the 1,050,000 Shares owned by JEC II, and (ii) as a Manager of MOS PTC, may be deemed the beneficial owner of the 215,000 Shares owned by MOS Trust, which together with the 285,000 Shares he directly owns, constitutes an aggregate of 1,550,000 Shares beneficially owned by Mr. Torok, constituting approximately 2.8% of the Shares outstanding.

Each Reporting Person may be deemed to be a member of a "group" with the other Reporting Persons for the purposes of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, and such group may be deemed to beneficially own the 3,650,000 Shares owned in the aggregate by all of the Reporting Persons, constituting approximately 6.5% of the Shares outstanding. Each Reporting Person disclaims beneficial ownership of the Shares that he or it does not directly own.

**(b)**
Each of the Radoff Foundation and Mr. Radoff may be deemed to share the power to vote and dispose of the Shares directly beneficially owned by the Radoff Foundation.

Mr. Radoff has the sole power to vote and dispose of the Shares directly beneficially owned by him.

Each of JEC II and Mr. Torok may be deemed to share the power to vote and dispose of the Shares directly beneficially owned by JEC II.

Each of MOS Trust, MOS PTC and Mr. Torok may be deemed to share the power to vote and dispose of the Shares directly beneficially owned by MOS Trust.

Mr. Torok has the sole power to vote and dispose of the Shares directly beneficially owned by him.

**(c)**
The transactions in securities of the Issuer by the Reporting Persons during the past 60 days are set forth in Exhibit 2 and are incorporated herein by reference. All of such transactions were effected in the open market unless otherwise noted therein.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

On February 20, 2026, the Reporting Persons entered into a Group Agreement (the "Group Agreement") pursuant to which, among other things, the parties agreed (i) to the joint filing on behalf of each of them of statements on Schedule 13D with respect to the securities of the Issuer to the extent required by applicable law, (ii) to coordinate their activities with respect to the Issuer and (iii) that expenses incurred in connection with the group's activities would be split on a pro rata basis between Radoff and JEC based on the number of Shares beneficially owned in the aggregate by such party. The Group Agreement is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Other than as described herein, there are no contracts, arrangements, understandings or relationships among the Reporting Persons, or between the Reporting Persons and any other person, with respect to the securities of the Issuer.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Radoff Family Foundation

**Signature:** /s/ Bradley L. Radoff

**Name/Title:** Bradley L. Radoff, Director

**Date:** 02/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Radoff Bradley Louis

**Signature:** /s/ Bradley L. Radoff

**Name/Title:** Bradley L. Radoff

**Date:** 02/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** JEC II Associates, LLC

**Signature:** /s/ Michael Torok

**Name/Title:** Michael Torok, Manager

**Date:** 02/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** The MOS Trust

**Signature:** /s/ Michael Torok

**Name/Title:** Michael Torok, Manager of MOS PTC, LLC, its Trustee

**Date:** 02/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** MOS PTC, LLC

**Signature:** /s/ Michael Torok

**Name/Title:** Michael Torok, Manager

**Date:** 02/20/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Torok Michael

**Signature:** /s/ Michael Torok

**Name/Title:** Michael Torok

**Date:** 02/20/2026