Celestica CEO sells 66,056 shares under 10b5-1 plan
Celestica Inc. Chief Executive Officer Robert Mionis reported open-market sales of 66,056 common shares on June 15, 2026.
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Form Type
4
Rhea-AI Filing Summary
Celestica Inc. Chief Executive Officer Robert Mionis reported open-market sales of 66,056 common shares on June 15, 2026. The transactions, carried out by Mionis 2026 GRAT Number Three, were executed under a pre-arranged Rule 10b5-1 trading plan adopted on March 11, 2026.
The shares were sold in multiple trades at prices reported around $394–$414 per share, with each line showing a specific weighted-average price. After these sales, Mionis 2026 GRAT Number Three held 134,328 common shares, while separate filings show indirect holdings of 210,445 shares in Mionis 2026 GRAT Number One, 145,565 shares in Mionis 2026 GRAT Number Two, and a direct holding of 453,697 common shares.
Insider Trade Summary 10b5-1
Net Seller: 66,056 shares
Net Sell
20 txns
Insider
MIONIS ROBERT
Role
Chief Executive Officer
Sold
66,056 shs ($26.43M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Shares | 1,420 | $394.58 | $560K |
| Sale | Common Shares | 2,983 | $395.92 | $1.18M |
| Sale | Common Shares | 2,668 | $396.83 | $1.06M |
| Sale | Common Shares | 10,350 | $397.92 | $4.12M |
| Sale | Common Shares | 11,245 | $398.86 | $4.49M |
| Sale | Common Shares | 10,730 | $399.68 | $4.29M |
| Sale | Common Shares | 6,374 | $400.87 | $2.56M |
| Sale | Common Shares | 11,118 | $401.94 | $4.47M |
| Sale | Common Shares | 6,786 | $402.77 | $2.73M |
| Sale | Common Shares | 280 | $403.75 | $113K |
| Sale | Common Shares | 444 | $406.46 | $180K |
| Sale | Common Shares | 160 | $407.48 | $65K |
| Sale | Common Shares | 80 | $409.26 | $33K |
| Sale | Common Shares | 80 | $410.22 | $33K |
| Sale | Common Shares | 80 | $412.01 | $33K |
| Sale | Common Shares | 1,178 | $412.94 | $486K |
| Sale | Common Shares | 80 | $413.68 | $33K |
| holding | Common Shares | -- | -- | -- |
| holding | Common Shares | -- | -- | -- |
| holding | Common Shares | -- | -- | -- |
Holdings After Transaction:
Common Shares — 134,328 shares (Indirect, By Mionis 2026 GRAT Number Three);
Common Shares — 453,697 shares (Direct);
Common Shares — 210,445 shares (Indirect, By Mionis 2026 GRAT Number One);
Common Shares — 145,565 shares (Indirect, By Mionis 2026 GRAT Number Two)
Footnotes (17)
- F1. This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 11, 2026.
- F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $394.31-$395.30, 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.
- F3. On March 10, 2026, the Reporting Person contributed 200,384 shares of the Issuer's common shares to Mionis 2026 GRAT Number Three, which contribution was exempt from Section 16 pursuant to Rule 16a-13 under the Exchange Act.
- F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $395.32-$396.25, 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.
- F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $396.40-$397.29, 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.
- F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $397.46-$398.30, 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.
- F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $398.31-$399.30, 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.
- F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $399.31-$400.215, 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.
- F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $400.34-$401.30, 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.
- F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $401.38-$402.29, 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.
- F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $402.31-$403.30, 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.
- F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $403.45-$404.00, 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.
- F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $406.345-$406.755, 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.
- F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $407.44-$407.51, 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.
- F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $412.33-$413.26, 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.
- F16. On February 6, 2026, the Reporting Person contributed 210,445 shares of the Issuer's common shares to Mionis 2026 GRAT Number One, which contribution was exempt from Section 16 pursuant to Rule 16a-13 under the Exchange Act.
- F17. On February 19, 2026, the Reporting Person contributed 145,565 shares of the Issuer's common shares to Mionis 2026 GRAT Number Two, which contribution was exempt from Section 16 pursuant to Rule 16a-13 under the Exchange Act.
Key Figures
Shares sold: 66,056 shares
Example sale price: $413.68 per share
Post-sale GRAT Three holdings: 198,964 shares
+5 more
8 metrics
Shares sold
66,056 shares
Open-market sales on June 15, 2026 by Mionis 2026 GRAT Number Three
Example sale price
$413.68 per share
One reported weighted average sale price on June 15, 2026
Post-sale GRAT Three holdings
198,964 shares
Common shares held by Mionis 2026 GRAT Number Three after sales
GRAT One holdings
210,445 shares
Common shares held indirectly by Mionis 2026 GRAT Number One
GRAT Two holdings
145,565 shares
Common shares held indirectly by Mionis 2026 GRAT Number Two
Direct holdings
453,697 shares
Common shares held directly by the reporting person as of June 15, 2026
10b5-1 plan adoption date
March 11, 2026
Date CEO adopted Rule 10b5-1 trading plan covering these sales
Contribution to GRAT Three
200,384 shares
Shares contributed on March 10, 2026 to Mionis 2026 GRAT Number Three
Key Terms
Rule 10b5-1 plan, GRAT, Section 16, weighted average price, +1 more
5 terms
Rule 10b5-1 plan regulatory
"This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person"
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
GRAT financial
"Mionis 2026 GRAT Number Three"
Section 16 regulatory
"contribution was exempt from Section 16 pursuant to Rule 16a-13 under the Exchange Act"
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Rule 16a-13 regulatory
"exempt from Section 16 pursuant to Rule 16a-13 under the Exchange Act"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transaction did Celestica (CLS) report for CEO Robert Mionis?
Celestica reported that CEO Robert Mionis, through Mionis 2026 GRAT Number Three, sold 66,056 common shares on June 15, 2026. These were open-market transactions executed under a pre-arranged Rule 10b5-1 trading plan adopted earlier in 2026.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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