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
2727 Kirby Drive, Unit 29L,
Houston, TX, 77098
713-482-2196

MICHAEL TOROK
68 Mazzeo Drive,
Randolph, MA, 02368
617-680-6709

RYAN NEBEL
OLSHAN FROME WOLOSKY LLP, 1325 Avenue of the Americas
New York, NY, 10019
212-451-2300

(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)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No.

81578P106

Name of reporting person

Radoff Family Foundation

Check the appropriate box if a member of a Group (See Instructions)

(a)

(b)

SEC use only

Source of funds (See Instructions)

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

Checkbox not checked

Citizenship or place of organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 500,000.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 500,000.00

Aggregate amount beneficially owned by each reporting person

500,000.00

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in Row (11)

0.9 %

Type of Reporting Person (See Instructions)

SCHEDULE 13D

CUSIP No.

81578P106

Name of reporting person

Radoff Bradley Louis

Check the appropriate box if a member of a Group (See Instructions)

(a)

(b)

SEC use only

Source of funds (See Instructions)

AF, PF

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

Checkbox not checked

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,600,000.00
8	Shared Voting Power 500,000.00
9	Sole Dispositive Power 1,600,000.00
10	Shared Dispositive Power 500,000.00

Aggregate amount beneficially owned by each reporting person

2,100,000.00

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in Row (11)

3.7 %

Type of Reporting Person (See Instructions)

SCHEDULE 13D

CUSIP No.

81578P106

Name of reporting person

JEC II Associates, LLC

Check the appropriate box if a member of a Group (See Instructions)

(a)

(b)

SEC use only

Source of funds (See Instructions)

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

Checkbox not checked

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,050,000.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,050,000.00

Aggregate amount beneficially owned by each reporting person

1,050,000.00

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in Row (11)

1.9 %

Type of Reporting Person (See Instructions)

SCHEDULE 13D

CUSIP No.

81578P106

Name of reporting person

The MOS Trust

Check the appropriate box if a member of a Group (See Instructions)

(a)

(b)

SEC use only

Source of funds (See Instructions)

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

Checkbox not checked

Citizenship or place of organization

WYOMING

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 215,000.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 215,000.00

Aggregate amount beneficially owned by each reporting person

215,000.00

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in Row (11)

0.4 %

Type of Reporting Person (See Instructions)

SCHEDULE 13D

CUSIP No.

81578P106

Name of reporting person

MOS PTC, LLC

Check the appropriate box if a member of a Group (See Instructions)

(a)

(b)

SEC use only

Source of funds (See Instructions)

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

Checkbox not checked

Citizenship or place of organization

WYOMING

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 215,000.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 215,000.00

Aggregate amount beneficially owned by each reporting person

215,000.00

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in Row (11)

0.4 %

Type of Reporting Person (See Instructions)

SCHEDULE 13D

CUSIP No.

81578P106

Name of reporting person

Torok Michael

Check the appropriate box if a member of a Group (See Instructions)

(a)

(b)

SEC use only

Source of funds (See Instructions)

AF, PF

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

Checkbox not checked

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 285,000.00
8	Shared Voting Power 1,265,000.00
9	Sole Dispositive Power 285,000.00
10	Shared Dispositive Power 1,265,000.00

Aggregate amount beneficially owned by each reporting person

1,550,000.00

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in Row (11)

2.8 %

Type of Reporting Person (See Instructions)

SCHEDULE 13D

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, CALIFORNIA , 94065.

Item 2.

Identity and Background

(a)

This statement is filed by: (i) The Radoff Family Foundation, a Texas non-profit corporation (the "Radoff Foundation"), with respect to the shares of Class A Common Stock, par value $0.00001 per share, of the Issuer (the "Shares") directly and beneficially owned by it; (ii) Bradley L. Radoff, with respect to the Shares directly and beneficially owned by him and as a director of the Radoff Foundation; (iii) JEC II Associates, LLC, a Delaware limited liability company ("JEC II"), with respect to the Shares directly and beneficially owned by it; (iv) The MOS Trust, a Wyoming trust ("MOS Trust"), with respect to the Shares directly and beneficially owned by it; (v) MOS PTC, LLC, a Wyoming limited liability company ("MOS PTC"), as the trustee of MOS Trust; and (vi) Michael Torok, with respect to the Shares directly and beneficially owned by him, as the Manager of JEC II and a Manager of MOS PTC. Each of the foregoing is referred to as a "Reporting Person" and collectively as the "Reporting Persons." The Radoff Foundation and Mr. Radoff are collectively referred to as "Radoff." JEC II, MOS Trust, MOS PTC and Mr. Torok are collectively referred to as "JEC." Each of the Reporting Persons is party to that certain Group Agreement, as further described in Item 6. Accordingly, the Reporting Persons are hereby filing a joint Schedule 13D. Set forth on Exhibit 1 is the name and present principal occupation or employment, principal business address and citizenship of the executive officers and directors of the Radoff Foundation. To the best of the Reporting Persons' knowledge, except as otherwise set forth herein or in Exhibit 1, none of the persons listed on Exhibit 1 beneficially owns any securities of the Issuer or is a party to any contract, agreement or understanding required to be disclosed herein.

(b)

The principal business address of each of Radoff Foundation and Mr. Radoff is 2727 Kirby Drive, Unit 29L, Houston, Texas 77098. The principal business address of each of JEC II and Mr. Torok is 68 Mazzeo Drive, Randolph, Massachusetts 02368. The principal business address of each of MOS Trust and MOS PTC is 270 W. Pearl, Suite 103, Jackson, Wyoming 83001.

(c)

The principal business of the Radoff Foundation is serving charitable purposes. The principal occupation of Mr. Radoff is serving as a private investor. Mr. Radoff also serves as a director of the Radoff Foundation. The principal business of each of JEC II and MOS Trust is investing in securities. The principal business of MOS PTC is serving as the trustee of MOS Trust. The principal occupation of Mr. Torok is serving as the Manager of JEC II. Mr. Torok also serves as a Manager of MOS PTC.

(d)

No Reporting Person, nor any person listed on Exhibit 1, has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e)

No Reporting Person, nor any person listed on Exhibit 1, has, during the last five years, been party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f)

The Radoff Foundation is organized under the laws of the State of Texas. JEC II is organized under the laws of the State of Delaware. MOS Trust and MOS PTC are organized under the laws of the State of Wyoming. Messrs. Radoff and Torok are citizens of the United States of America.

Item 3.

Source and Amount of Funds or Other Consideration

The Shares purchased by the Radoff Foundation were purchased with working capital (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business). The aggregate purchase price of the 500,000 Shares directly owned by the Radoff Foundation is approximately $970,645, including brokerage commissions. The Shares directly owned by Mr. Radoff were purchased with personal funds (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business). The aggregate purchase price of the 1,600,000 Shares directly owned by Mr. Radoff is approximately $3,049,622, including brokerage commissions. The Shares purchased by JEC II were purchased with working capital (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business). The aggregate purchase price of the 1,050,000 Shares owned directly by JEC II is approximately $1,991,880, including brokerage commissions. The Shares purchased by MOS Trust were purchased with working capital (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business). The aggregate purchase price of the 215,000 Shares owned directly by MOS Trust is approximately $420,140, including brokerage commissions. The Shares directly owned by Mr. Torok were purchased with personal funds (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business). The aggregate purchase price of the 285,000 Shares directly owned by Mr. Torok is approximately $654,853, including brokerage commissions.

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.

(d)

No person other than the Reporting Persons is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, the Shares.

(e)

Not applicable.

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.

Item 7.

Material to be Filed as Exhibits.

1 - Directors and Officers. 2 - Transactions in Securities. 99.1 - Group Agreement, dated February 20, 2026.

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.

Radoff Family Foundation

Signature:	/s/ Bradley L. Radoff
Name/Title:	Bradley L. Radoff, Director
Date:	02/20/2026

Radoff Bradley Louis

Signature:	/s/ Bradley L. Radoff
Name/Title:	Bradley L. Radoff
Date:	02/20/2026

JEC II Associates, LLC

Signature:	/s/ Michael Torok
Name/Title:	Michael Torok, Manager
Date:	02/20/2026

The MOS Trust

Signature:	/s/ Michael Torok
Name/Title:	Michael Torok, Manager of MOS PTC, LLC, its Trustee
Date:	02/20/2026

MOS PTC, LLC

Signature:	/s/ Michael Torok
Name/Title:	Michael Torok, Manager
Date:	02/20/2026

Torok Michael

Signature:	/s/ Michael Torok
Name/Title:	Michael Torok
Date:	02/20/2026

SEC Form SCHEDULE 13D filed by Seer Inc.