Celestica CEO Robert Mionis Sells 56,000+ Shares via Rule 10b5-1 Plan

Celestica Inc. (CLS) CEO Robert Mionis filed a Form 4 reporting the sale of 56,000+ common shares on June 16, 2026, through a pre-arranged Rule 10b5-1 trading plan established on March 11, 2026. The shares were sold in 15 separate transactions at weighted average prices ranging from $382.21 to $395.86 per share, with total sales proceeds exceeding $22 million. The sales were executed from shares held indirectly through the "Mionis 2026 GRAT Number Three" trust. Following these transactions, Mionis maintains significant ownership in Celestica, including direct holdings of 453,697 shares and indirect holdings through two other GRAT trusts totaling 355,010 shares. The filing was signed by attorney-in-fact Tracy Connelly McGilley on June 17, 2026.