Celestica (CLS) CEO Robert Mionis awarded 1,271 RSUs vesting in 2029

Rhea-AI Filing Summary

MIONIS ROBERT reported acquisition or exercise transactions in this Form 4 filing.

CELESTICA INC Chief Executive Officer Robert Mionis received an equity award of restricted share units. On August 11, 2026, he was granted 1,271 restricted share units (RSUs), each representing a contingent right to receive one common share or an equivalent value in cash. These RSUs vest on April 1, 2029, and following the grant he holds 1,271 RSUs directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider MIONIS ROBERT

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Share Units F1, F2	1,271	$0.00	$0.00

Holdings After Transaction: Restricted Share Units — 1,271 shares (Direct)

Footnotes (2)

1. F1. Each restricted share unit ("RSU") represents a contingent right to receive one common share or an equivalent value in cash.
2. F2. On August 11, 2026, the reporting person was granted 1,271 RSUs, which vest on April 1, 2029.

Key Figures

RSUs granted: 1,271 Underlying common shares: 1,271 Vest date: April 1, 2029 +2 more

5 metrics

RSUs granted 1,271 Restricted share units granted to Robert Mionis on August 11, 2026

Underlying common shares 1,271 Each RSU represents a contingent right to receive one common share or cash equivalent

Vest date April 1, 2029 Vesting date for the 1,271 RSUs granted to Robert Mionis

Holdings after grant 1,271 RSUs Total restricted share units held directly by Robert Mionis following the transaction

Transaction price per RSU $0.0000 Indicated grant price per RSU for this compensation award

Key Terms

Restricted Share Units, contingent right, vest

3 terms

Restricted Share Units financial

"Each restricted share unit ("RSU") represents a contingent right to receive one common share"

Restricted share units (RSUs) are a promise from a company to give an employee or service provider actual shares or cash equal to the shares after certain conditions are met, typically staying with the company for a set time or hitting performance targets. Think of them like a time-locked gift card that becomes usable only after you’ve earned it. For investors, RSUs matter because they align employee incentives with company performance and can increase the number of shares outstanding over time, diluting existing ownership and affecting earnings per share.

contingent right financial

"represents a contingent right to receive one common share or an equivalent value in cash"

vest financial

"the reporting person was granted 1,271 RSUs, which vest on April 1, 2029"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

What equity award did CELESTICA INC (CLS) CEO Robert Mionis receive on August 11, 2026?

Robert Mionis received a grant of 1,271 restricted share units (RSUs) on August 11, 2026. Each RSU represents a contingent right to receive one common share or an equivalent cash value, subject to vesting conditions.

When do the 1,271 RSUs granted to CELESTICA INC (CLS) CEO Robert Mionis vest?

The 1,271 RSUs granted to Robert Mionis vest on April 1, 2029. Vesting means he will then be entitled to receive common shares or an equivalent cash value for those units, assuming conditions are satisfied.

How many restricted share units does CELESTICA INC (CLS) CEO Robert Mionis hold after this Form 4 transaction?

Following the reported transaction, Robert Mionis holds 1,271 restricted share units directly. This amount reflects the full grant reported, as the RSUs were acquired and no dispositions were reported in this filing.

What does each restricted share unit (RSU) for CELESTICA INC (CLS) represent in this filing?

Each RSU represents a contingent right to receive one common share or an equivalent cash value. Actual delivery of shares or cash occurs only upon vesting and satisfaction of applicable conditions.

Was the CELESTICA INC (CLS) CEO’s RSU grant reported as a purchase or as a compensation award?

The RSU grant was reported as a grant, award, or other acquisition under transaction code “A,” indicating a compensation-related award rather than an open-market purchase or sale.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/12/2026 - 04:47 PM Accepted by SEC EDGAR 08/12/2026 - 04:46 PM Learn about SEC filing dates

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^*

MIONIS ROBERT

(Last) (First) (Middle)

5140 YONGE STREET

SUITE 1900

(Street)

TORONTO M2N 6L7

(City) (State) (Zip)

ONTARIO, CANADA

(Country)

2. Issuer Name and Ticker or Trading Symbol
CELESTICA INC [ CLS ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2026

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

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
Restricted Share Units	(1)	08/11/2026		A		1,271		(2)	(2)	Common Shares	1,271	$0	1,271	D

Explanation of Responses:

1. Each restricted share unit ("RSU") represents a contingent right to receive one common share or an equivalent value in cash.

2. On August 11, 2026, the reporting person was granted 1,271 RSUs, which vest on April 1, 2029.

	/s/ Tracy Connelly McGilley, attorney-in-fact	08/12/2026
	** 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)