Massachusetts Financial Services Company (BC) reports 6.4% Brunswick ownership on amended 13G

Rhea-AI Filing Summary

Massachusetts Financial Services Company filed an amended Schedule 13G reporting its beneficial ownership in Brunswick Corporation common stock. The firm reported beneficial ownership of 4,136,460 shares of common stock, representing 6.4% of the outstanding class. It reported sole power to vote 4,053,350 shares and sole power to dispose of 4,136,460 shares, with no shared voting or dispositive power. The reporting person is organized in Delaware and this amendment reflects its current passive ownership position.

Key Figures

Beneficial ownership: 4,136,460 shares Percent of class: 6.4% Sole voting power: 4,053,350 shares +1 more

4 metrics

Beneficial ownership 4,136,460 shares Shares of Brunswick Corporation common stock beneficially owned by MFS

Percent of class 6.4% Portion of Brunswick Corporation common stock class beneficially owned

Sole voting power 4,053,350 shares Shares for which MFS has sole power to vote or direct the vote

Sole dispositive power 4,136,460 shares Shares for which MFS has sole power to dispose or direct disposition

Key Terms

beneficially owned, sole voting power, sole dispositive power, percent of class

4 terms

beneficially owned financial

"Amount beneficially owned: 4,136,460 shares of Common Stock"

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.

sole voting power financial

"Sole power to vote or to direct the vote: 4,053,350"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole power to dispose or to direct the disposition of: 4,136,460"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

percent of class financial

"Percent of class: 6.4 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

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

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FAQ

What percentage of Brunswick Corporation (BC) does Massachusetts Financial Services Company report owning?

Massachusetts Financial Services Company reports beneficial ownership of 6.4% of Brunswick Corporation’s common stock, based on 4,136,460 shares held. This stake reflects a significant institutional position disclosed on an amended Schedule 13G.

How many Brunswick Corporation (BC) shares are beneficially owned according to this Schedule 13G/A?

The filing reports that Massachusetts Financial Services Company beneficially owns 4,136,460 shares of Brunswick Corporation common stock. These shares are held by MFS and/or certain other non-reporting entities it advises.

What voting power does Massachusetts Financial Services Company have over Brunswick (BC) shares?

Massachusetts Financial Services Company reports sole voting power over 4,053,350 Brunswick shares and no shared voting power. This means it alone can vote or direct the vote for those shares under current arrangements.

What dispositive power is reported over Brunswick Corporation (BC) shares in this 13G/A?

The filer reports sole dispositive power over 4,136,460 Brunswick shares and no shared dispositive power. Sole dispositive power means it can independently decide whether to sell or otherwise dispose of those shares.

Who is the reporting person in this Brunswick Corporation (BC) Schedule 13G/A filing?

The reporting person is Massachusetts Financial Services Company, a Delaware entity with its principal business office at 111 Huntington Avenue, Boston, MA 02199. It reports a passive institutional ownership stake in Brunswick.

What class of Brunswick Corporation (BC) securities is covered by this Schedule 13G/A?

The filing covers Common Stock of Brunswick Corporation, identified by CUSIP 117043109. The reported ownership and voting/dispositive powers all relate specifically to this class of common equity.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

BRUNSWICK CORPORATION

(Name of Issuer)

Common Stock

(Title of Class of Securities)

117043109

(CUSIP Number)

06/30/2026

(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): 117043109

1

Names of Reporting Persons

Massachusetts Financial Services Company

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 4,053,350.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 4,136,460.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,136,460.00

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)

6.4 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: BRUNSWICK CORPORATION
(b)	Address of issuer's principal executive offices: 26125 N. Riverwoods Blvd., Suite 500, Mettawa, IL 60045-3420
Item 2.
(a)	Name of person filing: Massachusetts Financial Services Company
(b)	Address or principal business office or, if none, residence: 111 Huntington Avenue, Boston, MA 02199
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 117043109
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: 4,136,460 shares of Common Stock consisting of shares beneficially owned by MFS and/or certain other non-reporting entities
(b)	Percent of class: 6.4 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 4,053,350
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 4,136,460
	(iv) Shared power to dispose or to direct the disposition of: 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:

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.

Massachusetts Financial Services Company

Signature:	Deepu Pylee
Name/Title:	Compliance Director
Date:	07/29/2026