Global Self Storage, Inc.

SELFNASDAQReal Estate● Active

$5.01

$-0.06(-1.18%)

Market Cap$57222717

P/E Ratio—

52W High$5.81

52W Low$4.73

Avg Volume25K

Open$5.10

Beta0.03

Insider Trades Ownership Employees

Global Self Storage, Inc. (SELF) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · SELF · as of Jun 8, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

∞

Buy/Sell (by trades)

Overall sentiment

BULLISH

↑ Buy 100%Active transactions only · RSU vesting excluded0% Sell ↓

Global Self Storage, Inc. insiders have been net buyers of shares over the past 12 Months, which may signal confidence in the company's outlook.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 8, 2026

SELF insider buying and selling by quarter

SELF insider selling · SELF insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

92K46K0

2024 Q3

2024 Q4

2025 Q1

2025 Q2

2025 Q3

2025 Q4

2026 Q1

2026 Q2

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 8, 2026

Active insiders

Most active in past 12 months · SELF ceo insider trading

Showing all insiders · Click a card to filter the transactions table below

▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API

Recent insider transactions

SELF executive sell shares · SELF board member insider trading · SELF insider trading SEC filing

Showing 100 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
May 14, 2026	WINMILL MARK CAMPBELL President and CEO · Director	Purchase	4,000	$5.33	$21K	368,582.289	Form 4
May 12, 2026	BURKE RUSSELL E III Director	Award	94	$5.31	$499	38,181	Form 4
May 12, 2026	Zachary William Chester Director	Award	94	$5.31	$499	18,100	Form 4
Mar 31, 2026	BURKE RUSSELL E III Director	Award	2,739	$5.11	$14K	38,087	Form 4
Mar 31, 2026	Zachary William Chester Director	Award	2,739	$5.11	$14K	18,006	Form 4
Mar 24, 2026	Kamerman Russell Assistant General Counsel	Award	500	$5.10	$3K	5,925	Form 4
Mar 24, 2026	Klimoski Donald II General Counsel	Award	5,527	$5.10	$28K	97,554	Form 4
Mar 24, 2026	Klimoski Donald II General Counsel	Award	5,527	$5.08	$28K	92,027	Form 4
Mar 24, 2026	OMalley Thomas CFO	Award	5,527	$5.10	$28K	91,694	Form 4
Mar 24, 2026	OMalley Thomas CFO	Award	5,527	$5.08	$28K	86,167	Form 4
Mar 24, 2026	WINMILL MARK CAMPBELL President and CEO · Director	Award	12,672	$5.10	$65K	364,582.289	Form 4
Mar 24, 2026	WINMILL MARK CAMPBELL President and CEO · Director	Award	12,672	$5.08	$64K	351,910.289	Form 4
Dec 5, 2025	WINMILL MARK CAMPBELL President and CEO · Director	Purchase	3,600	$5.09	$18K	339,238.289	Form 4
Dec 5, 2025	WINMILL MARK CAMPBELL President and CEO · Director	Purchase	800	$5.05	$4K	335,638.289	Form 4
Dec 4, 2025	WINMILL MARK CAMPBELL President and CEO · Director	Purchase	6,000	$5.14	$31K	334,838.289	Form 4
Dec 3, 2025	WINMILL MARK CAMPBELL President and CEO · Director	Purchase	6,000	$5.13	$31K	328,838.289	Form 4
Dec 2, 2025	Klimoski Donald II General Counsel	Purchase	446	$5.05	$2K	86,500	Form 4
Dec 1, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	3,062	$5.18	$16K	147,641	Form 4
Nov 28, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	3,342	$5.16	$17K	144,579	Form 4
Nov 26, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	4,873	$5.17	$25K	141,237	Form 4
Nov 25, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	4,547	$5.18	$24K	136,364	Form 4
Nov 24, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	4,064	$5.14	$21K	131,817	Form 4
Nov 21, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	6,226	$5.09	$32K	127,753	Form 4
Nov 20, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	5,870	$5.08	$30K	121,527	Form 4
Nov 19, 2025	WINMILL & CO. INC other: See "Explanation of Responses"	Purchase	6,226	$5.13	$32K	115,657	Form 4

WINMILL MARK CAMPBELL

President and CEO · Director

Purchase

Date

May 14

4,000

Price

$5.33

Value

$21K

View Form 4 on SEC.gov

BURKE RUSSELL E III

Director

Award

Date

May 12

Price

$5.31

Value

$499

View Form 4 on SEC.gov

Zachary William Chester

Director

Award

Date

May 12

Price

$5.31

Value

$499

View Form 4 on SEC.gov

BURKE RUSSELL E III

Director

Award

Date

Mar 31

2,739

Price

$5.11

Value

$14K

View Form 4 on SEC.gov

Zachary William Chester

Director

Award

Date

Mar 31

2,739

Price

$5.11

Value

$14K

View Form 4 on SEC.gov

Kamerman Russell

Assistant General Counsel

Award

Date

Mar 24

500

Price

$5.10

Value

$3K

View Form 4 on SEC.gov

Klimoski Donald II

General Counsel

Award

Date

Mar 24

5,527

Price

$5.10

Value

$28K

View Form 4 on SEC.gov

Klimoski Donald II

General Counsel

Award

Date

Mar 24

5,527

Price

$5.08

Value

$28K

View Form 4 on SEC.gov

OMalley Thomas

CFO

Award

Date

Mar 24

5,527

Price

$5.10

Value

$28K

View Form 4 on SEC.gov

OMalley Thomas

CFO

Award

Date

Mar 24

5,527

Price

$5.08

Value

$28K

View Form 4 on SEC.gov

WINMILL MARK CAMPBELL

President and CEO · Director

Award

Date

Mar 24

12,672

Price

$5.10

Value

$65K

View Form 4 on SEC.gov

WINMILL MARK CAMPBELL

President and CEO · Director

Award

Date

Mar 24

12,672

Price

$5.08

Value

$64K

View Form 4 on SEC.gov

WINMILL MARK CAMPBELL

President and CEO · Director

Purchase

Date

Dec 5

3,600

Price

$5.09

Value

$18K

View Form 4 on SEC.gov

WINMILL MARK CAMPBELL

President and CEO · Director

Purchase

Date

Dec 5

800

Price

$5.05

Value

$4K

View Form 4 on SEC.gov

WINMILL MARK CAMPBELL

President and CEO · Director

Purchase

Date

Dec 4

6,000

Price

$5.14

Value

$31K

View Form 4 on SEC.gov

WINMILL MARK CAMPBELL

President and CEO · Director

Purchase

Date

Dec 3

6,000

Price

$5.13

Value

$31K

View Form 4 on SEC.gov

Klimoski Donald II

General Counsel

Purchase

Date

Dec 2

446

Price

$5.05

Value

$2K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Dec 1

3,062

Price

$5.18

Value

$16K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Nov 28

3,342

Price

$5.16

Value

$17K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Nov 26

4,873

Price

$5.17

Value

$25K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Nov 25

4,547

Price

$5.18

Value

$24K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Nov 24

4,064

Price

$5.14

Value

$21K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Nov 21

6,226

Price

$5.09

Value

$32K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Nov 20

5,870

Price

$5.08

Value

$30K

View Form 4 on SEC.gov

WINMILL & CO. INC

other: See "Explanation of Responses"

Purchase

Date

Nov 19

6,226

Price

$5.13

Value

$32K

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 4

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About SELF insider trading

SELF insider trades

Global Self Storage, Inc. (SELF) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including WINMILL & CO. INC (other: See "Explanation of Responses"), WINMILL MARK CAMPBELL (President and CEO · Director), BURKE RUSSELL E III (Director). Over the past 12 months, 5 insiders have filed transactions with the SEC. SELF insiders have been primarily buying, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Global Self Storage, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

SELF insider trading · 5 questions

The insiders of Global Self Storage, Inc. (SELF) include executives and directors such as WINMILL & CO. INC (other: See "Explanation of Responses"), WINMILL MARK CAMPBELL (President and CEO · Director), BURKE RUSSELL E III (Director), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

SELF board member insider tradingwho are SELF insidersSELF insider rosterGlobal Self Storage, Inc. executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026