Robert Mionis - 17 Jun 2026 Form 4 Insider Report for CELESTICA INC (CLS)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: CLS
Reported as of: 17 Jun 2026
Net transaction value: -$7,000,835
SEC form: 4
Accepted by SEC: 17 Jun 2026, 20:54:49 UTC
Prior SEC filing: 17 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Tracy Connelly McGilley, attorney-in-fact

Key filing fact

Robert Mionis filed Form 4 for CELESTICA INC (CLS) on 17 Jun 2026.

Key facts

This page summarizes Robert Mionis's Form 4 filing for CELESTICA INC (CLS).
14 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 17 Jun 2026, 20:54.

Change

Previous filing in this sequence was filed on 17 Jun 2026.
Current net transaction value: -$7,000,835.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001195655 Primary reporting owner

MIONIS ROBERT

Relationship: Chief Executive Officer, Director
Address: 5140 YONGE STREET, SUITE 1900, TORONTO, ONTARIO, CANADA
Signature: /s/ Tracy Connelly McGilley, attorney-in-fact
Signature date: 17 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CLS transaction

Common Shares

Sale

Transaction value: $129,024
Shares: -341
Change %: -0.43%
Price: $378.37
Shares after: 78,219
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F2

CLS transaction

Common Shares

Sale

Transaction value: $574,942
Shares: -1,515
Change %: -1.9%
Price: $379.50
Shares after: 76,704
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F3

CLS transaction

Common Shares

Sale

Transaction value: $166,169
Shares: -437
Change %: -0.57%
Price: $380.25
Shares after: 76,267
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F4

CLS transaction

Common Shares

Sale

Transaction value: $289,902
Shares: -760
Change %: -1%
Price: $381.45
Shares after: 75,507
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F5

CLS transaction

Common Shares

Sale

Transaction value: $581,294
Shares: -1,520
Change %: -2%
Price: $382.43
Shares after: 73,987
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F6

CLS transaction

Common Shares

Sale

Transaction value: $659,866
Shares: -1,721
Change %: -2.3%
Price: $383.42
Shares after: 72,266
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F7

CLS transaction

Common Shares

Sale

Transaction value: $711,066
Shares: -1,850
Change %: -2.6%
Price: $384.36
Shares after: 70,416
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F8

CLS transaction

Common Shares

Sale

Transaction value: $940,474
Shares: -2,440
Change %: -3.5%
Price: $385.44
Shares after: 67,976
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F9

CLS transaction

Common Shares

Sale

Transaction value: $552,724
Shares: -1,431
Change %: -2.1%
Price: $386.25
Shares after: 66,545
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F10

CLS transaction

Common Shares

Sale

Transaction value: $584,778
Shares: -1,510
Change %: -2.3%
Price: $387.27
Shares after: 65,035
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F11

CLS transaction

Common Shares

Sale

Transaction value: $606,076
Shares: -1,560
Change %: -2.4%
Price: $388.51
Shares after: 63,475
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F12

CLS transaction

Common Shares

Sale

Transaction value: $915,869
Shares: -2,352
Change %: -3.7%
Price: $389.40
Shares after: 61,123
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F13

CLS transaction

Common Shares

Sale

Transaction value: $225,914
Shares: -579
Change %: -0.95%
Price: $390.18
Shares after: 60,544
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F14

CLS transaction

Common Shares

Sale

Transaction value: $62,738
Shares: -160
Change %: -0.26%
Price: $392.11
Shares after: 60,384
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Three
Footnotes: F1, F15

CLS holding

Common Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 453,697
Date: 17 Jun 2026
Ownership: Direct

CLS holding

Common Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 210,445
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number One

CLS holding

Common Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 145,565
Date: 17 Jun 2026
Ownership: By Mionis 2026 GRAT Number Two

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 15 footnotes

Footnote F1

This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 11, 2026.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $377.93-$378.83, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F3

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $379.00-$379.92, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $379.98 -$380.55, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F5

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $380.97-$381.85, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F6

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $381.99-$382.87, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F7

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $382.94-$383.91, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F8

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $383.93 -$384.89, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F9

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $384.94 -$385.90, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F10

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $385.96 -$386.83, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F11

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $386.94 -$387.64, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F12

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $387.98 -$388.92, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F13

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $388.96-$389.84, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F14

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $389.96-$390.59, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F15

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $391.95-$392.205 inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.