How many Deferred Share Units does Barry Mainz hold after this BlackBerry (BB) grant?

After the reported grant, Barry Mainz holds 83,830 Deferred Share Units. These DSUs each represent the economic value of one BlackBerry common share and will be settled in cash, shares, or both after his board service ends.

What is a Deferred Share Unit in the context of BlackBerry (BB)?

A Deferred Share Unit is a compensation instrument whose value equals one common share. For BlackBerry, DSUs become payable in cash, common shares, or a combination at the company’s discretion after the director’s service on the board ends.

When can Barry Mainz receive value from these BlackBerry (BB) Deferred Share Units?

The Deferred Share Units become payable only after Barry Mainz ceases serving as a director. At that time, BlackBerry may settle the DSUs in cash, common shares, or a mix of both, according to its discretion under the plan terms.

BlackBerry director granted 8,541 deferred units

Mainz Barry reported acquisition or exercise transactions in this Form 4 filing.

Filing Impact

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Filing Sentiment

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Sentiment and the balance of points

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Form Type

Rhea-AI Filing Summary

Mainz Barry reported acquisition or exercise transactions in this Form 4 filing.

BlackBerry Limited director Barry Mainz received a grant of 8,541 Deferred Share Units (DSUs). Each DSU is economically equivalent to one common share and becomes payable in cash, common shares, or a combination after he stops serving as a director. Following this award, Mainz holds 83,830 DSUs directly.

Insider Trade Summary

Grant/Award: 8,541 shares

Grant/Award 1 txn

Insider Mainz Barry

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Deferred Share Unit	8,541	$0.00	$0.00

Holdings After Transaction: Deferred Share Unit — 83,830 contracts (Direct)

Footnotes (1)

F1. Each Deferred Share Unit ("DSU") is the economic equivalent of one common share. The DSUs become payable, in cash or common shares or a combination of the two, at the discretion of BlackBerry Limited ("BlackBerry") following cessation of the reporting person's service as a director of BlackBerry.

Key Figures

Deferred Share Units granted: 8,541 units Total DSUs after transaction: 83,830 units Grant price per DSU: $0.00 per unit +1 more

4 metrics

Deferred Share Units granted 8,541 units Grant on 2026-05-31

Total DSUs after transaction 83,830 units Holdings following grant

Grant price per DSU $0.00 per unit Compensation award, not market purchase

Underlying common shares 8,541 shares Common shares underlying DSUs

Key Terms

Deferred Share Unit, economic equivalent of one common share, payable, in cash or common shares or a combination, cessation of the reporting person's service as a director

4 terms

payable, in cash or common shares or a combination financial

"The DSUs become payable, in cash or common shares or a combination of the two, at the discretion of BlackBerry Limited."

cessation of the reporting person's service as a director financial

"The DSUs become payable... following cessation of the reporting person's service as a director of BlackBerry."

FAQ

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

What insider transaction did Barry Mainz report for BlackBerry (BB)?

Barry Mainz reported receiving 8,541 Deferred Share Units as a grant. These units are part of director compensation and are economically equivalent to common shares, increasing his total Deferred Share Unit holdings to 83,830 after the transaction.

Is Barry Mainz buying or selling BlackBerry (BB) shares in this Form 4?

The Form 4 shows an acquisition through a grant, not a market buy or sale. Mainz received 8,541 Deferred Share Units as compensation, with no open-market purchase or sale of BlackBerry common shares reported in this filing.

Does this BlackBerry (BB) Form 4 indicate any option exercises or tax withholding?

The Form 4 does not report any option exercises or tax-withholding dispositions. It records a single grant-type transaction of 8,541 Deferred Share Units, with no exercise, sale, gift, or restructuring entries associated with this event.

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

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Accepted by SEC EDGAR 06/01/2026 - 05:02 PM

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^*

Mainz Barry

(Last)

(First)

(Middle)

C/O BLACKBERRY LTD

2200 UNIVERSITY AVENUE EAST

(Street)

WATERLOO

N2K0A7

(City)

(State)

(Zip)

ONTARIO, CANADA

(Country)

2. Issuer Name and Ticker or Trading Symbol
BLACKBERRY Ltd [ BB ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/31/2026

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)

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)
Deferred Share Unit	⁽¹⁾	05/31/2026		A		8,541		⁽¹⁾	⁽¹⁾	Common Shares	8,541	⁽¹⁾	83,830	D

Explanation of Responses:

1. Each Deferred Share Unit ("DSU") is the economic equivalent of one common share. The DSUs become payable, in cash or common shares or a combination of the two, at the discretion of BlackBerry Limited ("BlackBerry") following cessation of the reporting person's service as a director of BlackBerry.

Remarks:

	/s/ Fraser Deziel, Attorney-in-fact for Barry Mainz	06/01/2026
	** 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