Form 4: Celestica CEO Executes Planned Stock Sale

Celestica CEO Robert Mionis sold 40,000 common shares via a pre-arranged Rule 10b5-1 trading plan.

Summary

• CEO Robert Mionis sold a total of 40,000 common shares of Celestica Inc. on June 16, 2026.
• The sales were executed at weighted average prices ranging from $382.21 to $395.86 per share.
• The transactions were conducted through the Mionis 2026 GRAT Number Three.
• Following these transactions, the reporting person retains significant holdings, including 453,697 shares held directly and additional indirect holdings in other GRATs.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the sale was conducted under a pre-planned 10b5-1 arrangement, which is standard practice for executive liquidity.

Positives

• The transactions were executed under a pre-established Rule 10b5-1 trading plan, which is a standard mechanism for executives to sell stock without concerns regarding insider trading.

Negatives

• The sale represents a reduction in the CEO's indirect beneficial ownership of the company's equity.

Risks

• Executive stock sales, even when pre-planned, can sometimes be perceived negatively by the market as a signal of management's view on current valuation.

Future Outlook

No specific forward-looking guidance regarding company operations was provided in this filing.

Industry Context

StockSavvy.ai notes that executive divestment via 10b5-1 plans is a routine corporate governance practice in the electronics manufacturing services (EMS) sector, typically used for personal financial planning rather than reflecting changes in company fundamentals.

Comparison to Industry Standards

• The use of Rule 10b5-1 plans is the industry standard for executives at major technology firms like Jabil or Flex to ensure compliance and transparency during stock liquidations.

Stakeholder Impact

• Shareholders should note the reduction in insider holdings, though the pre-planned nature of the sale mitigates concerns regarding potential negative sentiment.

Next Steps

• No future actions or milestones were disclosed in this filing.

Key Dates

Keywords

Celestica, CLS, Insider Trading, Form 4, Robert Mionis, Stock Sale, Rule 10b5-1