ROBERT MIONIS - 04 Feb 2026 Form 4 Insider Report for CELESTICA INC (CLS)

Role: Chief Executive Officer, Director
Signature: /s/ Tracy Connelly McGilley, attorney-in-fact
Issuer symbol: CLS
Transactions as of: 04 Feb 2026
Net transactions value: -$1,420,324
Form type: 4
Filing time: 06 Feb 2026, 16:20:24 UTC
Previous filing: 03 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MIONIS ROBERT	Chief Executive Officer, Director	5140 YONGE STREET, SUITE 1900, TORONTO, ONTARIO, CANADA	/s/ Tracy Connelly McGilley, attorney-in-fact	06 Feb 2026	0001195655

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CLS	Common Shares	Options Exercise	$0	+12,133	+1.2%	$0.000000	1,014,866	04 Feb 2026	Direct
transaction	CLS	Common Shares	Tax liability	$1,420,324	-4,775	-0.47%	$297.45	1,010,091	04 Feb 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CLS	Restricted Share Units	Options Exercise	$0	-12,133	-33%	$0.000000	24,267	04 Feb 2026	Common Shares	12,133		Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted share units ("RSUs").
F2	Each RSU represents a contingent right to receive one common share or an equivalent value in cash.
F3	On February 4, 2025, the reporting person was granted 36,400 RSUs, which vest ratably over a three-year period on each of the first and second anniversaries of the grant date and on December 1 following the second anniversary of the grant date.