Global Self Storage insider purchases; holdings now 97,587 shares

Global Self Storage (SELF) reported insider share purchases by Winmill & Co. Incorporated on a Form 4.

Accepted by SEC EDGAR 11/14/2025 - 04:30 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Global Self Storage (SELF) reported insider share purchases by Winmill & Co. Incorporated on a Form 4. The reporting person bought 6,694 shares at $5.0262 on 11/13/2025 and 7,035 shares at $5.0943 on 11/14/2025. Following these trades, the reporting person beneficially owned 97,587 shares, held directly.

Remarks note the reporting person may be deemed an affiliate. The Winmill Family Trust owns all voting stock of the reporting person, and its trustees may be deemed to have indirect beneficial ownership; each disclaims beneficial ownership.

Insider Trade Summary

Net Buyer: 13,729 shares

Net Buy 2 txns

Insider WINMILL & CO. INC

Role Insider

Bought 13,729 shs ($69K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	7,035	$5.0943	$36K
Purchase	Common Stock	6,694	$5.0262	$34K

Holdings After Transaction: Common Stock — 97,587 shares (Direct)

FAQ

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

What did SELF’s insider report on Form 4?

Winmill & Co. Incorporated reported open-market purchases of 6,694 shares at $5.0262 on 11/13/2025 and 7,035 shares at $5.0943 on 11/14/2025.

How many SELF shares does the reporting person own after the trades?

Beneficial ownership following the reported transactions is 97,587 shares, held directly.

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

The filing indicates the reporting person may be deemed an affiliate of the issuer.

Who signed the Form 4 for the reporting person?

The form was signed by Donald Klimoski II on behalf of Winmill & Co. Incorporated on 11/14/2025.

What does the remarks section disclose about beneficial ownership?

It states the Winmill Family Trust owns all voting stock of the reporting person; certain trustees may be deemed indirect beneficial owners, and each disclaims beneficial ownership.

Were the securities held directly or indirectly after the trades?

The filing lists the ownership form as Direct (D) for the 97,587 shares.

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

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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)
11/13/2025

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	11/13/2025		P		6,694	A	$5.0262	90,552	D
Common Stock	11/14/2025		P		7,035	A	$5.0943	97,587	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	11/14/2025
	** 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.