[Form 4] CELESTICA INC Insider Trading Activity

Rhea-AI Filing Summary

Luis A. Muller, a director of Celestica Inc. (CLS), reported acquisition of 325 director share units on 09/30/2025. These units are a contingent right to receive one common share each or an equivalent cash value when the holder stops serving as a director, consultant or other service provider. After the reported transaction, Mr. Muller beneficially owns 849 common shares directly. The Form 4 was signed on behalf of the reporting person by attorney-in-fact Tracy Connelly McGilley on 10/01/2025. The filing lists the reporting persons address as 5140 Yonge Street, Suite 1900, Toronto, M2N 6L7.

Positive

• Reported acquisition of 325 director share units increases disclosed insider holdings
• Updated direct beneficial ownership to 849 common shares provides transparency under Section 16

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine director compensation settled in share units increases reported insider holdings modestly; standard disclosure practice.

The filing documents a common, non-cash director compensation event: 325 director share units granted on 09/30/2025 that convert to common shares or cash upon termination of service. Reporting the units and the updated direct holdings (849 shares) complies with Section 16 disclosure requirements and provides transparency about the directors potential future equity exposure. No exercised options, sales, or other unusual arrangements are disclosed.

Securities Analyst

TL;DR: Transaction is administrative and immaterial to company valuation; it updates insider ownership records.

The Form 4 shows an acquisition code (A) for 325 director share units at $0 reported price, consistent with equity-based director compensation rather than a market purchase. The increase raises the reporting persons direct beneficial ownership to 849 shares. There is no cash transaction, no derivative exercise, and no indication of disposition, so the filing is informational and not a market-moving event based on the disclosed facts.

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

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Muller Luis A

(Last) (First) (Middle)

5140 YONGE STREET

SUITE 1900

(Street)

TORONTO A6 M2N 6L7

(City) (State) (Zip)

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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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

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
Director Share Units	(1)	09/30/2025		A		325		(1)	(1)	Common Shares	325	$0	849	D

Explanation of Responses:

1. Each director share unit represents a contingent right to receive one common share or an equivalent value in cash at the Issuer's discretion when the holder ceases to serve the Issuer as any of a director, consultant or other service provider.

	/s/ Tracy Connelly McGilley, attorney-in-fact	10/01/2025
	** 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 did Celestica director Luis A. Muller report on Form 4 (CLS)?

He reported the acquisition of 325 director share units on 09/30/2025, bringing his direct beneficial ownership to 849 common shares.

What are director share units in this filing?

Each director share unit is a contingent right to one common share or equivalent cash that vests for delivery when the holder ceases service, per the filings explanation.

Was cash paid for the director share units?

No cash price is reported; the filing shows a $0 price for the units, indicating they were awarded rather than purchased.

When was the Form 4 signed and by whom?

The form was signed on behalf of the reporting person by attorney-in-fact Tracy Connelly McGilley on 10/01/2025.

Does the filing show any option exercises or share dispositions?

No. The filing records only an acquisition of director share units and the resulting beneficial ownership; no exercises or dispositions are disclosed.