Form 4 shows Winmill & Co. insider buying in Global Self Storage

Rhea-AI Filing Summary

Global Self Storage, Inc. (SELF) reported insider share purchases by Winmill & Co. Incorporated on Form 4. The reporting person bought 6,226 shares of common stock on 11/21/2025 at $5.0872 per share and 4,064 shares on 11/24/2025 at $5.1437 per share, both coded as open market purchases. After these transactions, the reporting person directly beneficially owned 131,817 shares of Global Self Storage common stock. The filing notes that the reporting person may be deemed an affiliate of the issuer and that the Winmill Family Trust and its trustees disclaim beneficial ownership of these shares.

Insider Trade Summary

Net Buyer: 10,290 shares ($52,577)

Net Buy 2 txns

Insider WINMILL & CO. INC

Role Insider

Bought 10,290 shs ($53K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	4,064	$5.1437	$21K
Purchase	Common Stock	6,226	$5.0872	$32K

Holdings After Transaction: Common Stock — 131,817 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

WINMILL & CO. INC

(Last) (First) (Middle)

2255 BUFFALO ROAD

(Street)

ROCHESTER NY 14624

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Global Self Storage, Inc. [ SELF ]

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

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See "Explanation of Responses"

3. Date of Earliest Transaction (Month/Day/Year)
11/21/2025

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

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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/21/2025		P		6,226	A	$5.0872	127,753	D
Common Stock	11/24/2025		P		4,064	A	$5.1437	131,817	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

The Reporting Person may be deemed to be an affiliate of the Issuer. The Winmill Family Trust owns all of the voting stock of the Reporting Person. Thomas B. Winmill, Mark C. Winmill, William Winmill, and Woodworth Winmill are trustees of the Winmill Family Trust and may be deemed to have indirect beneficial ownership of the Reporting Person's shares as a result of their status as controlling persons of the Winmill Family Trust and the Reporting Person. Each of Thomas B. Winmill, Mark C. Winmill, William Winmill, Woodworth Winmill, and the Winmill Family Trust disclaims beneficial ownership of these shares.

	Donald Klimoski II, on behalf of Winmill & Co. Incorporated	11/24/2025
	** 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 4 (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.

FAQ

What did Winmill & Co. report in this Form 4 for Global Self Storage (SELF)?

Winmill & Co. Incorporated reported two open market purchases of Global Self Storage (SELF) common stock, increasing its directly beneficially owned shares to 131,817.

How many Global Self Storage (SELF) shares were purchased and on what dates?

Winmill & Co. purchased 6,226 SELF shares on 11/21/2025 and 4,064 shares on 11/24/2025, as disclosed in Table I.

At what prices were the Global Self Storage (SELF) shares bought in this Form 4?

The purchases were reported at $5.0872 per share on 11/21/2025 and $5.1437 per share on 11/24/2025.

How many Global Self Storage (SELF) shares does the reporting person own after these trades?

Following the reported transactions, Winmill & Co. directly beneficially owned 131,817 shares of Global Self Storage common stock.

What is the relationship of the reporting person to Global Self Storage (SELF)?

The filing states the reporting person may be deemed to be an affiliate of Global Self Storage and is listed under the “Other” relationship category with further detail in the explanations.

Who may have indirect beneficial ownership related to these SELF shares?

The filing explains that the Winmill Family Trust and its trustees—Thomas B. Winmill, Mark C. Winmill, William Winmill, and Woodworth Winmill—may be deemed to have indirect beneficial ownership, but each disclaims such beneficial ownership.