Sergey Brin reports 5.81% of Class A, 42.86% of Class B

Sergey Brin reported beneficial ownership of Alphabet Inc. shares as of December 31, 2025.

Accepted by SEC EDGAR 02/17/2026 - 08:39 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Sergey Brin reported beneficial ownership of Alphabet Inc. shares as of December 31, 2025. The filing states 359,414,947 shares of Class A Common Stock (inclusive of convertible Class B) representing 5.81% of Class A, and 358,939,978 shares of Class B Common Stock representing 42.86% of Class B. The filing notes Class B shares are convertible one-for-one into Class A and carry ten votes per share; percentages are based on 5,822,013,593 Class A and 837,430,561 Class B outstanding at that date. The schedule is signed by Kent Walker as Attorney-in-Fact for Mr. Brin on 02/17/2025.

Insights

Corporate Governance Analyst

Brin retains significant voting control via Class B shares.

Sergey Brin is shown holding 358,939,978 Class B shares and related voting power equivalent to those shares as of December 31, 2025. The filing explicitly states Class B shares carry ten votes per share while Class A carry one vote, and that Class B shares are convertible one-for-one into Class A.

Control dynamics depend on existing Class B supply and conversions; the filing anchors percentages to the disclosed outstanding counts and includes a conversion assumption used to compute the Class A aggregate percentage.

Securities Compliance Specialist

Schedule 13G/A discloses beneficial ownership and conversion assumptions; procedural attestations are present.

The schedule provides precise ownership counts and percent figures based on the stated outstanding share totals as of December 31, 2025. It also includes a power of attorney reference and a signature by an attorney-in-fact dated 02/17/2025.

Filing mechanics and the conversion statement are explicit; any future changes depend on subsequent reports or transactions reported in later filings.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake does Sergey Brin report in Alphabet (GOOG)?

Mr. Brin reports beneficial ownership of 359,414,947 Class A shares (inclusive of converted Class B) and 358,939,978 Class B shares as of December 31, 2025, per the filing.

What voting power do Brin's Class B shares carry in GOOG?

Each Class B share carries ten votes per share while Class A carries one vote; the filing notes Class B holdings underlie Brin's substantial voting influence as of December 31, 2025.

How were the ownership percentages calculated in the filing?

Percentages are based on 5,822,013,593 Class A and 837,430,561 Class B outstanding at December 31, 2025, with Class B shares deemed convertible for Class A percentage calculations.

Does the filing show conversion assumptions for Class B shares?

Yes. The filing states Class B shares are convertible at the holder's option one-for-one into Class A, and it treats all Class B shares as converted for certain percentage computations.

Who signed the Schedule 13G/A for Sergey Brin?

The schedule is signed by Kent Walker as Attorney-in-Fact for Sergey Brin, dated 02/17/2025, and references a power of attorney dated October 2, 2015.

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

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 19)

Alphabet Inc.

(Name of Issuer)

Class A Common Stock, Class B Common Stock

(Title of Class of Securities)

02079K305

(CUSIP Number)

12/31/2025

(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)

SCHEDULE 13G

CUSIP No. 02079K305

1

Names of Reporting Persons

Sergey Brin

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 359,414,947.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 359,414,947.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

359,414,947.00

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)

5.81 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: Ownership comprises (i) 474,969 shares of Class A Common Stock held directly by Mr. Brin; (ii) 358,594,578 shares of Class B Common Stock held directly by Mr. Brin; (iii) 172,700 shares of Class B Common Stock held by SMB Pacific 2021 Charitable Remainder Unitrust I of which Mr. Brin is the sole trustee; and (iv) 172,700 shares of Class B Common Stock held by SMB Pacific 2021 Charitable Remainder Unitrust II, of which Mr. Brin is the sole trustee. Ownership of Class A Common Stock assumes conversion of all such reporting person's shares of Class B Common Stock into shares of Class A Common Stock. Each share of Class B Common Stock is convertible at the option of the holder into one share of Class A Common Stock. Each share of Class B Common Stock is entitled to ten votes per share, whereas each share of Class A Common Stock is entitled to one vote per share. All other rights of the holders of Class A Common Stock and Class B Common Stock are identical. The ownership percentages set forth above are based on 5,822,013,593 shares of Class A Common Stock and 837,430,561 shares of Class B Common Stock of Alphabet Inc. outstanding at December 31, 2025. The CUSIP for Class B Common Stock is 02079K 206.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Alphabet Inc.
(b)	Address of issuer's principal executive offices: c/o Alphabet Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043
Item 2.
(a)	Name of person filing: Sergey Brin
(b)	Address or principal business office or, if none, residence: c/o Alphabet Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043
(c)	Citizenship: United States of America
(d)	Title of class of securities: Class A Common Stock, Class B Common Stock
(e)	CUSIP No.: 02079K305
Item 4.	Ownership
(a)	Amount beneficially owned: 359,414,947 - Class A Common Stock 358,939,978 - Class B Common Stock Pursuant to Rule 13d-3(d)(1), all shares of Class B Common Stock (which are convertible into shares of Class A Common Stock) held by the Reporting Person were deemed to be converted for the purposes of (i) determining the aggregate amount of shares of Class A Common Stock beneficially owned by the Reporting Person and (ii) calculating the percentages of the Class A Common Stock owned by the Reporting Person. Consequently, all Class A Common Stock amounts and percentages are inclusive of the Class B Common Stock amounts and percentages set forth herein. The percentages of ownership set forth below are based on 5,822,013,593 shares of Class A Common Stock and 837,430,561 shares of Class B Common Stock of Alphabet Inc. outstanding at December 31, 2025.
(b)	Percent of class: 5.81% - Class A Common Stock 42.86% - Class B Common Stock
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 359,414,947 - Class A Common Stock 358,939,978 - Class B Common Stock
	(ii) Shared power to vote or to direct the vote: 0 0
	(iii) Sole power to dispose or to direct the disposition of: 359,414,947 - Class A Common Stock 358,939,978 - Class B Common Stock
	(iv) Shared power to dispose or to direct the disposition of: 0 0
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.

Sergey Brin

Signature:	/s/ Kent Walker
Name/Title:	Kent Walker as Attorney-in-Fact for Sergey Brin
Date:	02/17/2025

Exhibit Information

3. Pursuant to a power of attorney dated as of October 2, 2015, which was filed with the Securities and Exchange Commission as an attachment to a Schedule 13G/A filed with respect to Mr. Brin on February 11, 2016, File No. 005-89274.