Global Self Storage affiliate buys 12,853 shares

Q: What insider transactions were reported for Global Self Storage, Inc. (SELF)?

Winmill & Co. Inc. reported two open-market purchases of Global Self Storage common stock, totaling 12,853 shares. The trades occurred on August 17 and 18, 2026, at per-share prices slightly above $5.31.

Q: How many SELF shares did Winmill & Co. Inc. buy and at what prices?

Winmill & Co. Inc. purchased 7,117 shares at $5.3303 on August 17, 2026, and 5,736 shares at $5.3185 on August 18, 2026. In total, 12,853 shares of Global Self Storage common stock were acquired.

Q: Were the recent SELF insider purchases made under a Rule 10b5-1 trading plan?

No. The filing indicates the Rule 10b5-1 checkbox is unchecked, meaning the reported purchases of Global Self Storage (SELF) stock by Winmill & Co. Inc. were not affirmatively made pursuant to a Rule 10b5-1 trading plan.

Q: Who is the reporting person in the SELF Form 4 and what is their relationship to the company?

The reporting person is Winmill & Co. Inc., which may be deemed an affiliate of Global Self Storage, Inc. The Winmill Family Trust owns all voting stock of Winmill & Co. Inc. and its trustees may be deemed indirect beneficial owners, but they disclaim beneficial ownership.

Q: Do the trustees of the Winmill Family Trust claim beneficial ownership of the SELF shares?

No. The filing states that Thomas B. Winmill, Mark C. Winmill, William Winmill, Woodworth Winmill, and the Winmill Family Trust may be deemed to have indirect beneficial ownership, but each of them disclaims beneficial ownership of the reported Global Self Storage shares.

Global Self Storage, Inc. (SELF) had insider activity reported by Winmill & Co. Inc., which may be deemed an affiliate of the company.

Filing Impact

(Neutral)

Filing Sentiment

(Positive)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

Global Self Storage, Inc. (SELF) had insider activity reported by Winmill & Co. Inc., which may be deemed an affiliate of the company. Winmill & Co. Inc. purchased a total of 12,853 shares of Global Self Storage common stock in open-market transactions on two consecutive days.

The reporting person bought 7,117 shares at $5.3303 per share on August 17, 2026, and 5,736 shares at $5.3185 per share on August 18, 2026. The Winmill Family Trust owns all voting stock of the reporting person, and its trustees may be deemed to have indirect beneficial ownership but disclaim beneficial ownership of these shares. The trades were not made under a Rule 10b5-1 plan.

Insider Trade Summary

Net Buyer: 12,853 shares

Net Buy 2 txns

Insider WINMILL & CO. INC

Role Insider

Bought 12,853 shs ($68K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	5,736	$5.3185	$31K
Purchase	Common Stock	7,117	$5.3303	$38K

Holdings After Transaction: Common Stock — 184,287 shares (Direct)

Key Figures

Shares purchased on 2026-08-17: 7,117 shares Price on 2026-08-17: $5.3303 per share Shares purchased on 2026-08-18: 5,736 shares +2 more

5 metrics

Shares purchased on 2026-08-17 7,117 shares Open-market purchase of Global Self Storage common stock by Winmill & Co. Inc.

Price on 2026-08-17 $5.3303 per share Per-share purchase price for 7,117 SELF shares

Shares purchased on 2026-08-18 5,736 shares Open-market purchase of Global Self Storage common stock by Winmill & Co. Inc.

Price on 2026-08-18 $5.3185 per share Per-share purchase price for 5,736 SELF shares

Total shares purchased 12,853 shares Sum of both reported transactions in Global Self Storage common stock

Key Terms

affiliate, indirect beneficial ownership, disclaims beneficial ownership, Rule 10b5-1

4 terms

affiliate financial

"The Reporting Person may be deemed to be an affiliate of the Issuer."

indirect beneficial ownership financial

"may be deemed to have indirect beneficial ownership of the Reporting Person's shares"

disclaims beneficial ownership financial

"the Winmill Family Trust disclaims beneficial ownership of these shares."

Rule 10b5-1 regulatory

"aff_10b5_one: false indicates the Rule 10b5-1 checkbox is not checked"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

What insider transactions were reported for Global Self Storage, Inc. (SELF)?

Winmill & Co. Inc. reported two open-market purchases of Global Self Storage common stock, totaling 12,853 shares. The trades occurred on August 17 and 18, 2026, at per-share prices slightly above $5.31.

How many SELF shares did Winmill & Co. Inc. buy and at what prices?

Winmill & Co. Inc. purchased 7,117 shares at $5.3303 on August 17, 2026, and 5,736 shares at $5.3185 on August 18, 2026. In total, 12,853 shares of Global Self Storage common stock were acquired.

Were the recent SELF insider purchases made under a Rule 10b5-1 trading plan?

No. The filing indicates the Rule 10b5-1 checkbox is unchecked, meaning the reported purchases of Global Self Storage (SELF) stock by Winmill & Co. Inc. were not affirmatively made pursuant to a Rule 10b5-1 trading plan.

Who is the reporting person in the SELF Form 4 and what is their relationship to the company?

The reporting person is Winmill & Co. Inc., which may be deemed an affiliate of Global Self Storage, Inc. The Winmill Family Trust owns all voting stock of Winmill & Co. Inc. and its trustees may be deemed indirect beneficial owners, but they disclaim beneficial ownership.

Do the trustees of the Winmill Family Trust claim beneficial ownership of the SELF shares?

No. The filing states that Thomas B. Winmill, Mark C. Winmill, William Winmill, Woodworth Winmill, and the Winmill Family Trust may be deemed to have indirect beneficial ownership, but each of them disclaims beneficial ownership of the reported Global Self Storage shares.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google

Available on EDGAR 08/18/2026 - 04:17 PM EDT Accepted by SEC EDGAR 08/18/2026 - 04:16 PM EDT

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)

17 OLD DREWSVILLE RD

(Street)

WALPOLE

NEW HAMPSHIRE

03608

(City)

(State)

(Zip)

UNITED STATES

(Country)

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"

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/17/2026		P		7,117	A	$5.3303	178,551	D
Common Stock	08/18/2026		P		5,736	A	$5.3185	184,287	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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, on behalf of Winmill & Co. Incorporated	08/18/2026
	** 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 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR