Grantham, Mayo Discloses 4.64% Holding in Sunrun (RUN)

Rhea-AI Filing Summary

Grantham, Mayo, Van Otterloo & Co. LLC reports beneficial ownership of 10,617,456 shares of Sunrun Inc. common stock, representing 4.64% of the outstanding class. The filing discloses that the reporting person has sole voting and sole dispositive power over these shares.

The statement is made on Schedule 13G (amendment) and includes a certification that the shares are held in the ordinary course of business and were not acquired to change or influence control of the issuer.

Positive

• Transparent disclosure of holdings: 10,617,456 shares reported
• Sole voting and dispositive power is clearly stated, reducing ambiguity about who controls the votes for these shares
• Certification of passive intent indicates the holdings were not acquired to influence control

Negative

• Stake below 5% (4.64%), limiting regulatory thresholds and likely reducing immediate market impact
• No indication of increased influence or planned engagement with the issuer in this filing

Insights

Financial Analyst

TL;DR: Institutional stake of 4.64% (10.6M shares) is passive and below 5%, suggesting limited immediate market-moving impact.

The disclosed position of 10,617,456 shares equals 4.64% of Sunrun's common stock and is reported on a Schedule 13G amendment, which typically indicates a passive investment by an investment adviser. The filer reports sole voting and dispositive power over the shares, meaning the adviser controls voting and disposition of this position but states it was not acquired to influence control. For investors, this is material as an update to institutional ownership but is below the 5% threshold that often draws heightened market attention.

Corporate Governance Expert

TL;DR: Filing signals transparent disclosure of a passive stake with sole control over voting and disposition, and an explicit non-control intent.

The Schedule 13G amendment identifies the reporting entity as an investment adviser and documents a clear governance stance: sole voting and dispositive authority over 10,617,456 shares while certifying the stake is not intended to change issuer control. From a governance perspective, the disclosure provides clarity on who can exercise voting rights for a meaningful minority position, although the adviser disclaims any activist intent.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Sunrun Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

86771W105

(CUSIP Number)

06/30/2025

(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. 86771W105

1

Names of Reporting Persons

Grantham, Mayo, Van Otterloo & Co. LLC

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

MASSACHUSETTS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 10,617,456.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 10,617,456.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

10,617,456.00

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)

4.64 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Sunrun Inc
(b)	Address of issuer's principal executive offices: 600 CALIFORNIA STREET SUITE 1800, SAN FRANCISCO, CA, 94108
Item 2.
(a)	Name of person filing: Grantham, Mayo, Van Otterloo & Co. LLC
(b)	Address or principal business office or, if none, residence: 53 State Street, Suite 3300, Boston, MA, 02109
(c)	Citizenship: USA
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 86771W105
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: 10617456
(b)	Percent of class: 4.64 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 10617456
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 10617456
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
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:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

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.

Grantham, Mayo, Van Otterloo & Co. LLC

Signature:	Gregory L. Pottle
Name/Title:	Chief Compliance Officer
Date:	08/08/2025

FAQ

What stake does Grantham, Mayo, Van Otterloo & Co. hold in Sunrun (RUN)?

They beneficially own 10,617,456 shares, representing 4.64% of Sunrun's common stock.

Does the filer have voting control over the RUN shares?

Yes. The filing states the filer has sole voting power and sole dispositive power over the 10,617,456 shares.

Is this a Schedule 13G or 13D filing for RUN?

This document is a Schedule 13G (an amendment), which typically indicates a passive institutional holding rather than an activist stake.

Was the position acquired to influence control of Sunrun (RUN)?

No. The filing includes a certification that the shares were not acquired and are not held to change or influence control of the issuer.

Does this filing indicate ownership of more than 5% of RUN?

No. The reported ownership is 4.64%, which is 5% or less of the class.