Massivemarkets

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

CLS daily closelast $260.01

Robert Mionis · Chief Executive Officer

$130.7M sold

Jason Phillips · President

$36.9M sold

Todd C. Cooper · President

$33.3M sold

Yann L. Etienvre · Chief Operations Officer

$28.1M sold

Mandeep Chawla · Chief Financial Officer

$13.1M sold

Leila Wong · Chief Human Resources Officer

$9.6M sold

Laurette T. Koellner · Director

$2.1M bought

Douglas Michael Parker · Chief Legal Officer

$1.1M sold
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Has 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
InsiderRoleSoldBoughtFilingsPre-arranged (10b5-1)Last filed
Robert MionisChief Executive Officer$130.7M—8100% of sales
Jason PhillipsPresident$36.9M—1—
Todd C. CooperPresident$33.3M—322% of sales
Yann L. EtienvreChief Operations Officer$28.1M—3—
Mandeep ChawlaChief Financial Officer$13.1M—3100% of sales
Leila WongChief Human Resources Officer$9.6M—2—
Laurette T. KoellnerDirector—$2.1M1—
Douglas Michael ParkerChief Legal Officer$1.1M—2—
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:

Agent prompt

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.