SEC Form 4
Celestica, Inc. (CLS) insider trading
In the 12 months to Oct 24, 2026, 7 CLS insiders reported open-market sales of $252.7M across 22 filings; one director bought $2.1M.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $252.7M
- 22 filings · 7 insiders
- Open-market purchases
- $2.1M
- 1 filing · Laurette T. Koellner, Director
- Pre-arranged sales (10b5-1)
- 12 of 22
- $151.0M of $252.7M sold (60%)
Who traded CLS, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
CLS daily close from Oct 24, 2025 to Oct 23, 2026, between $249.52 and $472.40, last $260.01. 22 sale and 1 purchase filings by 8 insiders, marked at their filing dates. Robert Mionis, Chief Executive Officer: sold $130.7M across 8 filings, first filed Jun 17, 2026, last Sep 24, 2026. Jason Phillips, President: sold $36.9M across 1 filing, first filed Feb 6, 2026, last Feb 6, 2026. Todd C. Cooper, President: sold $33.3M across 3 filings, first filed Feb 3, 2026, last Sep 24, 2026. Yann L. Etienvre, Chief Operations Officer: sold $28.1M across 3 filings, first filed Dec 2, 2025, last Feb 6, 2026. Mandeep Chawla, Chief Financial Officer: sold $13.1M across 3 filings, first filed Jun 17, 2026, last Aug 6, 2026. Leila Wong, Chief Human Resources Officer: sold $9.6M across 2 filings, first filed Dec 2, 2025, last Feb 3, 2026. Laurette T. Koellner, Director: bought $2.1M across 1 filing, first filed Oct 30, 2025, last Oct 30, 2025. Douglas Michael Parker, Chief Legal Officer: sold $1.1M across 2 filings, first filed Feb 3, 2026, last Feb 6, 2026.
Largest mark · tap a row for others
Robert Mionis · Chief Executive Officer
Filing 1 of 3 within a week · $58,646,143 total
Sale $3,506,918
9,543 shares at $367.49 avg
Filed Aug 3, 2026 · traded Jul 31
Pre-arranged (10b5-1) · close on filing date $341.91
Robert Mionis · Chief Executive Officer
Chief Executive Officer
$130.7M soldJason Phillips · President
President
$36.9M soldTodd C. Cooper · President
President
$33.3M soldYann L. Etienvre · Chief Operations Officer
Chief Operations Officer
$28.1M soldMandeep Chawla · Chief Financial Officer
Chief Financial Officer
$13.1M soldLeila Wong · Chief Human Resources Officer
Chief Human Resources Officer
$9.6M soldLaurette T. Koellner · Director
Director
$2.1M boughtDouglas Michael Parker · Chief Legal Officer
Chief Legal Officer
$1.1M soldHas Celestica, Inc.'s CEO sold stock?
Yes. Robert Mionis (CEO) sold 345,949 shares ($130.7M) between Jun 2026 and Sep 2026, all under a pre-arranged 10b5-1 plan.
Open-market trades
23 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Robert Mionis | Chief Executive Officer | $130.7M | — | 8 | 100% of sales | |
| Jason Phillips | President | $36.9M | — | 1 | — | |
| Todd C. Cooper | President | $33.3M | — | 3 | 22% of sales | |
| Yann L. Etienvre | Chief Operations Officer | $28.1M | — | 3 | — | |
| Mandeep Chawla | Chief Financial Officer | $13.1M | — | 3 | 100% of sales | |
| Leila Wong | Chief Human Resources Officer | $9.6M | — | 2 | — | |
| Laurette T. Koellner | Director | — | $2.1M | 1 | — | |
| Douglas Michael Parker | Chief Legal Officer | $1.1M | — | 2 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 23,396 | $364.22 | $8.5M | 21,476 | |
traded | Todd C. Cooper President | SalePre-arranged (10b5-1) | 20,118 | $360.00 | $7.2M | 73,252 | |
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 23,496 | $362.39 | $8.5M | 36,397 | |
traded | Mandeep Chawla Chief Financial Officer | SalePre-arranged (10b5-1) | 16,117 | $369.32 | $6.0M | 73,150 | |
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 98,453 | $368.99 | $36.3M | Multiple accounts | |
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 51,061 | $368.41 | $18.8M | 51,456 | |
traded | Mandeep Chawla Chief Financial Officer | SalePre-arranged (10b5-1) | 883 | $366.52 | $323.6K | 81,841 | |
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 9,543 | $367.49 | $3.5M | 56,501 | |
traded | Mandeep Chawla Chief Financial Officer | SalePre-arranged (10b5-1) | 17,000 | $399.65 | $6.8M | 89,128 | |
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 66,056 | $400.06 | $26.4M | 198,964 | |
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 55,768 | $386.96 | $21.6M | 91,217 | |
traded | Robert Mionis Chief Executive Officer | SalePre-arranged (10b5-1) | 18,176 | $385.17 | $7.0M | 65,035 | |
traded | Jason Phillips President | Sale | 120,000 | $307.44 | $36.9M | 12,584 | |
traded | Douglas Michael Parker Chief Legal Officer | Sale | 948 | $285.38 | $270.5K | 0 | |
traded | Yann L. Etienvre Chief Operations Officer | Sale | 1,145 | $283.51 | $324.6K | 0 | |
traded | Todd C. Cooper President | Sale | 1,065 | $283.51 | $301.9K | 108,970 | |
traded | Todd C. Cooper President | Sale | 89,484 | $287.45 | $25.7M | 108,970 | |
traded | Yann L. Etienvre Chief Operations Officer | Sale | 86,229 | $287.45 | $24.8M | 0 | |
traded | Leila Wong Chief Human Resources Officer | Sale | 29,950 | $287.00 | $8.6M | 13,892 | |
traded | Douglas Michael Parker Chief Legal Officer | Sale | 2,724 | $286.98 | $781.7K | 0 | |
traded | Yann L. Etienvre Chief Operations Officer | Sale | 9,187 | $323.38 | $3.0M | 0 | |
traded | Leila Wong Chief Human Resources Officer | Sale | 3,160 | $323.38 | $1.0M | 13,892 | |
traded | Laurette T. Koellner Director | Purchase | 6,000 | $341.67 | $2.1M | 700 |
GET /stocks/filings/vX/form-4?tickers=CLS&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"CLS"
],
"issuer_cik": "0001030894",
"owner_cik": "0001195655",
"accession_number": "0001193125-26-401230",
"form_type": "4",
"filing_date": "2026-09-24",
"period_of_report": "2026-09-23",
"issuer_name": "CELESTICA INC",
"issuer_trading_symbol": "CLS",
"owner_name": "MIONIS ROBERT",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Executive Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-09-23",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2590,
"transaction_price_per_share": 363.46,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 14112,
"transaction_value": 941361.3999999999,
"direct_or_indirect": "I",
"nature_of_ownership": "By Mionis 2026 GRAT Number Two",
"footnotes": [
{
"id": "F1",
"description": "This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 11, 2026."
},
{
"id": "F5",
"description": "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."
}
]
},
{
"tickers": [
"CLS"
],
"issuer_cik": "0001030894",
"owner_cik": "0001195655",
"accession_number": "0001193125-26-401230",
"form_type": "4",
"filing_date": "2026-09-24",
"period_of_report": "2026-09-23",
"issuer_name": "CELESTICA INC",
"issuer_trading_symbol": "CLS",
"owner_name": "MIONIS ROBERT",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Executive Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-09-23",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2294,
"transaction_price_per_share": 361.22,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 19182,
"transaction_value": 828638.68,
"direct_or_indirect": "I",
"nature_of_ownership": "By Mionis 2026 GRAT Number Two",
"footnotes": [
{
"id": "F1",
"description": "This transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on March 11, 2026."
},
{
"id": "F3",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.00-$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."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 79 records
- Option exercises39 records
- Tax withholding38 records
- Tax withholding (sold to cover)1 record
- Gifts1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for CLS every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.