CubeSmart Jeffrey P. Foster sells 22,776 shares

The CLO & Secretary's original option became exercisable in three equal installments on January 23, 2019, January 23, 2020, and January 23, 2021.

Available on EDGAR 11/03/2026 - 04:51 PM EST Accepted by SEC EDGAR 11/03/2026 - 04:50 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

CubeSmart CLO & Secretary Jeffrey P. Foster exercised options covering 22,776 shares at a $27.78 per-share exercise price on November 2, 2026, acquiring 22,776 common shares and then selling 22,776 shares at $43.7179 per share that day. No Rule 10b5-1 plan is reported for the transactions. The original option became exercisable in three equal installments on January 23, 2019, January 23, 2020, and January 23, 2021.

Insider Trade Summary

Exercise and Sale: 22,776 shares ($363K approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Foster Jeffrey P

Role CLO & Secretary

Sold 22,776 shs ($996K)

Approx. gross sale proceeds $996K

Approx. exercise cost $633K

Approx. pre-tax spread $363K

Type	Security	Shares	Price	Value
Exercise	Stock Option (right to buy) F1	22,776	$0.00	$0.00
Exercise	Common	22,776	$27.78	$633K
Sale	Common	22,776	$43.7179	$996K

Holdings After Transaction: Stock Option (right to buy) — 0 contracts (Direct); Common — 205,057 shares (Direct)

Footnotes (1)

1. F1. The original stock option for 22,776 shares became exercisable in three equal installments on January 23, 2019, 2020, and 2021.

Key Figures

Shares acquired through option exercise: 22,776 shares Exercise price: $27.78 per share Shares sold: 22,776 shares +2 more

5 metrics

Shares acquired through option exercise 22,776 shares November 2, 2026

Exercise price $27.78 per share Option exercise on November 2, 2026

Shares sold 22,776 shares November 2, 2026

Sale price $43.7179 per share Sale on November 2, 2026

Stock options following exercise 0 options Reported after the November 2, 2026 exercise

Key Terms

stock option, derivative security, exercise price

3 terms

stock option technical

"The original option became exercisable"

A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.

derivative security technical

"Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

exercise price financial

"at a $27.78 per-share exercise price"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

FAQ

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

How many CUBE shares did Jeffrey P. Foster sell, and at what price?

Jeffrey P. Foster sold 22,776 CubeSmart common shares at $43.7179 per share on November 2, 2026, after exercising options covering 22,776 shares at $27.78 per share. The transactions were not reported as made under a Rule 10b5-1 plan.

When did Jeffrey P. Foster's CUBE options become exercisable?

The original stock option covering 22,776 shares became exercisable in three equal installments on January 23, 2019, January 23, 2020, and January 23, 2021.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

Foster Jeffrey P

(Last) (First) (Middle)

5 OLD LANCASTER ROAD

(Street)

MALVERN PENNSYLVANIA 19355

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CubeSmart [ CUBE ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CLO & Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common	11/02/2026		M		22,776	A	$27.78	227,833	D
Common	11/02/2026		S		22,776	D	$43.7179	205,057	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
Stock Option (right to buy)	$27.78	11/02/2026		M			22,776	(1)	01/22/2028	Common	22,776	$0.0000	0.0000	D

Explanation of Responses:

1. The original stock option for 22,776 shares became exercisable in three equal installments on January 23, 2019, 2020, and 2021.

	Douglas J. Tyrell, Attorney-in-Fact	11/02/2026
	** 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)