# EDGAR Filing Document

**Accession Number:** 0001586852
**File Stem:** 0001104659-26-062854
**Filing Date:** 2026-5
**Character Count:** 7786
**Document Hash:** bc6ce6900a5bada94f467558eaf0b8ee
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-062854.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001104659-26-062854

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260515

**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 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91912
- **FILM NUMBER:** 26990312

**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:** Farokhzad Omid
- **CENTRAL INDEX KEY:** 0001586852

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**MAIL ADDRESS:**
- **STREET 1:** C/O SEER, INC.
- **STREET 2:** 3800 BRIDGE PARKWAY, SUITE 102
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94065

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 5)**

**Issuer:** Seer, Inc.

**Title of Class of Securities:** Class A Common Stock

**CUSIP Number:** —

**Date of Event Which Requires Filing of this Statement:** 03/31/2026

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [x] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Omid Farokhzad | Names of Reporting Persons<br>Omid Farokhzad |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>4801594.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>2117138.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>4801594.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>2117138.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>6918732.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>6918732.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>12.0% | Percent of Class Represented by Amount in Row (9)<br>12.0% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

**Item 1(a). Name of Issuer:**
Seer, Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
c/o Seer, Inc., 3800 Bridge Parkway, Suite 102, Redwood City, CA 94065

**Item 2(a). Name of Person Filing:**
Omid Farokhzad

**Item 2(b). Address of Principal Business Office:**
c/o Seer, Inc.
3800 Bridge Parkway, Suite 102
Redwood City, CA 94065

**Item 2(c). Citizenship:**
United States

**Item 2(d). Title of Class of Securities:**
Class A Common Stock

**Item 2(e). CUSIP Number:**
—

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

6,918,732
The amount set forth above includes (i) 2,286,586 shares of Class A common stock held of record by Omid Farokhzad (the "Reporting Person"); (ii) 2,515,008 shares of Class A common stock subject to options exercisable within 60 days of March 31, 2026; and (iii) 2,117,138 shares of Class A common stock held of record by SAF-BND Trust for which the Reporting Person's spouse serves as trustee. The Reporting Person disclaims beneficial ownership of the shares held by the SAF-BND Trust.

**(b) Percent of class:**

12.0
The percentage set forth above is based on the quotient obtained by dividing the aggregate amount beneficially owned by the Reporting Person as set forth in (a) above by the sum of (i) 54,981,551 shares of Class A common stock outstanding as of May 8, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026, filed with the Securities and Exchange Commission on May 13, 2026 (the "Form 10-Q") and (ii) 2,515,008 shares of Class A common stock subject to options exercisable within 60 days of March 31, 2026.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

4,801,594

**(ii) Shared power to vote or to direct the vote:**

2,117,138

**(iii) Sole power to dispose or to direct the disposition of:**

4,801,594

**(iv) Shared power to dispose or to direct the disposition of:**

2,117,138

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### 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.

**Omid Farokhzad**

**Date:** 05/15/2026

**By:** /s/ Omid Farokhzad

**Name & Title:** Omid Farokhzad