CLS · Celestica Inc

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.03-$362.01, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.12-$364.11, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $360.00-$360.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.30-$365.39, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.11-$363.01, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $364.13-$365.06, 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.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 190 D-RSUs, which vest on May 20, 2027.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 142 D-RSUs, which vest on May 20, 2027.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 133 D-RSUs, which vest on May 20, 2027.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 190 D-RSUs, which vest on May 20, 2027.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 142 D-RSUs, which vest on May 20, 2027.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 317 D-RSUs, which vest on May 20, 2027.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 203 D-RSUs, which vest on May 20, 2027.

Each director restricted share unit ("D-RSU") represents a contingent right to receive one common share upon settlement, subject to the reporting person's deferral election, or, at the Issuer's election, an equivalent value in cash.

On August 11, 2026, the reporting person was granted 133 D-RSUs, which vest on May 20, 2027.

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

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

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $375.00-$375.80, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $364.00-$364.79, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.74-$361.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $369.00-$369.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $373.03-$373.84, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $367.41-$367.97, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $374.06-$374.96, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $377.14-$377.48, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.00-$362.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $370.00-$370.99, 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.

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

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $372.07-$372.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $371.00-$371.91, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $376.08-$376.84, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $368.01-$368.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.21-$365.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.00-$363.97, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $366.14-$366.78, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $374.00-$374.43, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $371.13-$371.97, 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.

This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $368.06-$368.99, 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.

This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $367.14-$367.96, 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.

This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $363.02-$363.90, 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.

This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $373.01-$373.94, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $367.00-$367.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.03-$361.99, 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.

This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $366.00-$366.83, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $365.24-$365.87, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $371.04-$371.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $372.00-$372.99, 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.

This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.23-$361.92, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $362.00-$362.77, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $368.00-$368.99, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $373.00-$373.98, 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.

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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $373.07-$373.88, 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.