CubeSmart (NYSE: CUBE) CLO sells 23,148 shares after option exercise

Rhea-AI Filing Summary

CubeSmart executive Jeffrey P. Foster, the company’s CLO & Secretary, reported same-day option exercise and share sale activity. On March 3, 2026, he exercised a stock option for 23,148 shares that had vested in prior years at an exercise price of $26.30 per share, receiving 23,148 shares of common stock.

That same day, he sold 23,148 common shares in an open-market transaction at an average price of $41.0152 per share. After these transactions, Foster directly owned 205,057 shares of CubeSmart common stock.

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 PA 19355

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
03/03/2026

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	03/03/2026		M		23,148	A	$26.3	228,205	D
Common	03/03/2026		S		23,148	D	$41.0152	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)	$26.3	03/03/2026		M			23,148	(1)	01/22/2027	Common	23,148	$0.0000	0.0000	D

Explanation of Responses:

1. The original stock option for 23,148 shares became exercisable in three equal installments on January 23, 2018, 2019, and 2020.

	Douglas J. Tyrell, Attorney-in-Fact	03/03/2026
	** 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.

FAQ

What insider transactions did CubeSmart (CUBE) report for Jeffrey P. Foster?

CubeSmart reported that CLO & Secretary Jeffrey P. Foster exercised stock options for 23,148 shares and sold 23,148 common shares on March 3, 2026. After these transactions, he directly held 205,057 shares of CubeSmart common stock.

How many CubeSmart (CUBE) shares did Jeffrey P. Foster sell and at what price?

Jeffrey P. Foster sold 23,148 CubeSmart common shares on March 3, 2026 at an average price of $41.0152 per share. This was an open-market or private sale as indicated by the “S” transaction code in the Form 4.

What stock options did CubeSmart’s (CUBE) CLO exercise in the latest Form 4?

Foster exercised a stock option for 23,148 shares of CubeSmart common stock on March 3, 2026. The exercised option had an exercise price of $26.30 per share and originally became exercisable in three equal installments in 2018, 2019, and 2020.

How many CubeSmart (CUBE) shares does Jeffrey P. Foster own after the reported transactions?

After exercising options and selling shares on March 3, 2026, Jeffrey P. Foster directly owned 205,057 shares of CubeSmart common stock. Ownership is reported as direct, with no indication of indirect holdings or separate entities in this Form 4 excerpt.

Were the CubeSmart (CUBE) insider transactions open-market sales or option exercises?

The Form 4 shows both activities. Foster exercised a derivative security (stock option) for 23,148 shares, then executed a sale of 23,148 common shares classified as an open-market or private transaction, using transaction code “S” with an average sale price of $41.0152 per share.

What does the footnote in the CubeSmart (CUBE) Form 4 say about the option grant?

The footnote explains that the original stock option for 23,148 shares became exercisable in three equal installments on January 23 of 2018, 2019, and 2020. This clarifies that the options were fully vested before Foster exercised them on March 3, 2026.