MSGS Spinco: Corby reports 100-share indirect holding

The shares are held by Madison Square Garden Sports Corp. and its subsidiaries; Corby disclaims beneficial ownership except to the extent of any pecuniary interest.

Rhea-AI Filing Summary

MSGS Spinco, Inc. (MSGR-WI) has 100 common shares held directly by Madison Square Garden Sports Corp. and its subsidiaries, reported as an indirect holding associated with Dolan Leinauer Corby, a trustee of a 13(d) Group member. Corby may be deemed to beneficially own the shares but disclaims beneficial ownership except to the extent of any pecuniary interest. The holding entry is dated October 9, 2026.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Dolan Leinauer Corby

Role Insider

Type	Security	Shares	Price	Value
holding	Common Stock, par value $0.01 per share F1	--	--	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 100 shares (Indirect, By Madison Square Garden Sports Corp. and its subsidiaries)

Footnotes (1)

1. F1. The Reporting Person is a trustee of certain members of a "group" with respect to certain securities of Madison Square Garden Sports Corp. ("MSGS") for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). As such, the Reporting Person may be deemed to beneficially own shares of MSGS Spinco, Inc. ("MSGS Spinco") held directly by MSGS and its subsidiaries. The Reporting Person disclaims beneficial ownership of the shares of MSGS Spinco held by MSGS and its subsidiaries, except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Key Figures

Common shares held by Madison Square Garden Sports Corp. and its subsidiaries: 100 shares

1 metrics

Common shares held by Madison Square Garden Sports Corp. and its subsidiaries 100 shares Indirect holding entry dated October 9, 2026

Key Terms

Section 13(d) Group, beneficial ownership, pecuniary interest

3 terms

Section 13(d) Group regulatory

"trustee of certain members of a Section 13(d) Group"

beneficial ownership regulatory

"disclaims beneficial ownership of the shares"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"except to the extent of any pecuniary interest therein"

FAQ

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

How many MSGS Spinco (MSGR-WI) shares are reported?

The reported indirect holding is 100 common shares, held directly by Madison Square Garden Sports Corp. and its subsidiaries. The holding entry is dated October 9, 2026. Dolan Leinauer Corby, a trustee of a 13(d) Group member, may be deemed to beneficially own the shares but disclaims beneficial ownership except to the extent of any pecuniary interest.

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

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Available on EDGAR 10/23/2026 - 09:29 PM EDT Accepted by SEC EDGAR 10/09/2026 - 05:08 PM EDT Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Dolan Leinauer Corby

(Last) (First) (Middle)

C/O DOLAN FAMILY OFFICE

340 CROSSWAYS PARK DRIVE

(Street)

WOODBURY NEW YORK 11797

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
10/09/2026

3. Issuer Name and Ticker or Trading Symbol
MSGS Spinco, Inc. [ NONE ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Trustee of 13(d) Group Member

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01 per share	100	I	By Madison Square Garden Sports Corp. and its subsidiaries(1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The Reporting Person is a trustee of certain members of a "group" with respect to certain securities of Madison Square Garden Sports Corp. ("MSGS") for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). As such, the Reporting Person may be deemed to beneficially own shares of MSGS Spinco, Inc. ("MSGS Spinco") held directly by MSGS and its subsidiaries. The Reporting Person disclaims beneficial ownership of the shares of MSGS Spinco held by MSGS and its subsidiaries, except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Remarks:

The Reporting Person is a trustee of certain members of a Section 13(d) Group with respect to securities of MSGS. This Form 3 is being filed in connection with the Securities and Exchange Commission's declaration of effectiveness of the Registration Statement on Form 10 of MSGS Spinco, which describes the planned distribution by MSGS to its stockholders of all of the common stock of MSGS Spinco. Exhibit Index: Exhibit 24 - Power of Attorney

	/s/ Brian G. Sweeney, Attorney-in-Fact for Corby Dolan Leinauer	10/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)