MFS files 13G/A reporting 1.30M WING shares

Massachusetts Financial Services Company amended its Schedule 13G/A to report beneficial ownership of 1,295,548 shares of Wingstop Inc. Common Stock (CUSIP 974155103), representing 4.8% of the class as shown in the filing.

Rhea-AI Filing Summary

Massachusetts Financial Services Company amended its Schedule 13G/A to report beneficial ownership of 1,295,548 shares of Wingstop Inc. Common Stock (CUSIP 974155103), representing 4.8% of the class as shown in the filing. The filing lists sole voting power of 1,234,131 shares and sole dispositive power of 1,295,548 shares. The form is signed by a Compliance Director on 05/14/2026 and references 03/31/2026 in the header.

Insights

Institutional Ownership Analyst

MFS reports a sub‑5% stake with full dispositive control and near‑full voting control.

MFS lists 1,295,548 shares (4.8%) beneficially owned, with 1,234,131 shares as sole voting power. This shows an institutional position below the 5% reporting threshold requiring Schedule 13G/A treatment.

The filing does not disclose purchase dates or plans; subsequent filings would show changes in position or shifts in voting authority.

Corporate Governance Specialist

Voting and dispositive power are explicitly itemized; attribution is to MFS and certain non‑reporting entities.

The form states beneficial ownership "consisting of shares beneficially owned by MFS and/or certain other non‑reporting entities," indicating pooled or managed account holdings under MFS control. The document lists exact vote/disposition counts, useful for governance tallies.

Materiality to corporate control is limited because the stake is under 5%; however, vote tallies should use the sole voting power number when aggregating major holders.

Key Figures

Beneficial ownership: 1,295,548 shares Percent of class: 4.8% Sole voting power: 1,234,131 shares +2 more

5 metrics

Beneficial ownership 1,295,548 shares Common Stock reported on Schedule 13G/A

Percent of class 4.8% Percent of outstanding common stock

Sole voting power 1,234,131 shares Shares with sole power to vote as reported

Sole dispositive power 1,295,548 shares Shares with sole power to dispose as reported

CUSIP 974155103 Wingstop Inc Common Stock identifier

Key Terms

Schedule 13G/A, beneficially owned, sole dispositive power

3 terms

Schedule 13G/A regulatory

"Amendment No. 1 ) WINGSTOP INC 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.

beneficially owned financial

"Amount beneficially owned: 1,295,548 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 dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 1,295,548"

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.

FAQ

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

What stake does MFS report in Wingstop (WING)?

MFS reports beneficial ownership of 1,295,548 shares of Wingstop Common Stock, equal to 4.8% of the class as stated in the filing.

How much voting power does MFS hold in WING?

The filing lists sole voting power of 1,234,131 shares and shared voting power of 0, per the ownership breakdown in the Schedule 13G/A.

Does the Schedule 13G/A show MFS controls dispositions of the shares?

Yes. The form reports sole dispositive power of 1,295,548 shares and shared dispositive power of 0, indicating dispositive control over those shares.

When was the Schedule 13G/A signed for this filing?

The form is signed by the Compliance Director on 05/14/2026, and the header references 03/31/2026 as an associated date.

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

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Accepted by SEC EDGAR 05/14/2026 - 04:03 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

WINGSTOP INC

(Name of Issuer)

Common Stock

(Title of Class of Securities)

974155103

(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): 974155103

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 1,234,131.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,295,548.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,295,548.00

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)

4.8 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: WINGSTOP INC
(b)	Address of issuer's principal executive offices: 2801 N Central Expressway, Suite 1600, Dallas, TX 75204
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.: 974155103
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: 1,295,548 shares of Common Stock consisting of shares beneficially owned by MFS and/or certain other non-reporting entities
(b)	Percent of class: 4.8 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,234,131
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1,295,548
	(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.

Massachusetts Financial Services Company

Signature:	Deepu Pylee
Name/Title:	Compliance Director
Date:	05/14/2026