Seer (NASDAQ: SEER) Amendment: Farokhzad 6.92M shares, 12.0% ownership

Rhea-AI Filing Summary

Seer, Inc. reports amended beneficial ownership for Omid Farokhzad. The amendment states Mr. Farokhzad beneficially owns 6,918,732 shares of Class A common stock, representing 12.0% of the class. The calculation cites 54,981,551 shares outstanding as of May 8, 2026 and 2,515,008 options exercisable within 60 days of March 31, 2026. The total includes 2,117,138 shares held of record by a trust for which his spouse is trustee; the Reporting Person disclaims beneficial ownership of those trust-held shares.

Insights

Corporate Governance Specialist

Amendment clarifies ownership and voting/dispositive powers.

Omid Farokhzad is reported to control 6,918,732 shares of Class A common stock, with 4,801,594 shares of sole voting power and 2,117,138 of shared voting power. The filing lists 2,515,008 options exercisable within 60 days of March 31, 2026.

The disclosure separates record ownership from beneficial claims by noting the Reporting Person "disclaims beneficial ownership" of trust-held shares. Subsequent public filings will show whether these holdings affect governance votes tied to outstanding share counts reported as of May 8, 2026.

Key Figures

Beneficially owned: 6,918,732 shares Percent of class: 12.0% Shares outstanding: 54,981,551 shares +3 more

6 metrics

Beneficially owned 6,918,732 shares aggregate amount beneficially owned as of March 31, 2026

Percent of class 12.0% based on 54,981,551 shares outstanding as of May 8, 2026 plus exercisable options

Shares outstanding 54,981,551 shares outstanding as of <date>May 8, 2026</date> per cited Form 10-Q

Options exercisable 2,515,008 shares options exercisable within 60 days of <date>March 31, 2026</date>

Sole voting power 4,801,594 shares sole power to vote as reported in the filing

Shared voting power 2,117,138 shares shares held of record by SAF-BND Trust (spouse trustee)

Key Terms

beneficially owned, options exercisable within 60 days, disclaims beneficial ownership, Schedule 13G/A

4 terms

beneficially owned regulatory

"The amount set forth above includes (i) 2,286,586 shares... (a) Amount beneficially owned: 6,918,732"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

options exercisable within 60 days financial

"2,515,008 shares of Class A common stock subject to options exercisable within 60 days of March 31, 2026"

disclaims beneficial ownership regulatory

"The Reporting Person disclaims beneficial ownership of the shares held by the SAF-BND Trust."

Schedule 13G/A regulatory

"(Amendment No. 5 ) Seer, Inc. Class A Common Stock"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 07:02 PM Learn about SEC filing dates

FAQ

What stake does Omid Farokhzad hold in Seer (SEER)?

Mr. Farokhzad is reported to beneficially own 6,918,732 shares, equal to 12.0% of the Class A shares based on May 8, 2026 outstanding share counts. This total includes options exercisable within 60 days of March 31, 2026.

How is the 12.0% ownership percentage calculated?

The percentage divides the aggregate beneficially owned shares by 54,981,551 shares outstanding as of May 8, 2026 plus 2,515,008 options exercisable within 60 days of March 31, 2026, per the filing's stated formula.

Do any trust-held shares appear in Mr. Farokhzad's total?

Yes, the total includes 2,117,138 Class A shares held of record by SAF-BND Trust for which his spouse is trustee; the Reporting Person explicitly disclaims beneficial ownership of those trust-held shares.

How many shares can Mr. Farokhzad vote and dispose of?

The filing reports Mr. Farokhzad has sole power to vote and dispose of 4,801,594 shares and shared power to vote and dispose of 2,117,138 shares, matching the totals disclosed in the ownership table.

What portion of the total are exercisable options?

The filing states 2,515,008 shares are subject to options exercisable within 60 days of March 31, 2026, and these options are included in the aggregate beneficial ownership figure used for the 12.0% calculation.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 5)

Seer, Inc.

(Name of Issuer)

Class A Common Stock

(Title of Class of Securities)

81578P106

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

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

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 81578P106

1

Names of Reporting Persons

Omid Farokhzad

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 4,801,594.00
6	Shared Voting Power 2,117,138.00
7	Sole Dispositive Power 4,801,594.00
8	Shared Dispositive Power 2,117,138.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,918,732.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

12.0 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Seer, Inc.
(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
(b)	Address or principal business office or, if none, residence: c/o Seer, Inc. 3800 Bridge Parkway, Suite 102 Redwood City, CA 94065
(c)	Citizenship: United States
(d)	Title of class of securities: Class A Common Stock
(e)	CUSIP No.: 81578P106
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 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	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.	Certifications:
	Not Applicable

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

Signature:	/s/ Omid Farokhzad
Name/Title:	Omid Farokhzad
Date:	05/15/2026