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Celestica Inc.

TechnologyRussell 2000

Celestica Inc. insider trading

Celestica Inc. files with the SEC as a Printed Circuit Boards company headquartered in Toronto, A6. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent CLS insider transactions

One insider traded CLS on the open market between Aug 05, 2026 and Aug 13, 2026 — 24 sales worth $27.3M, of which every one was pre-scheduled under a 10b5-1 plan.

Bought
—
Sold
$27.3M

24 of 24 on a 10b5-1 plan

Net
−$27.3M
Insiders
1

Open-market purchases (code P) and sales (code S) from Celestica Inc.'s own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 22, 2026. The live dashboard shows new filings the moment they clear.

Every CLS Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

CLS insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 11 insiders traded CLS on the open market: 4 purchases worth $2.1M and 106 sales worth $304.8M, 61 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 4 purchases ($2.1M) and 78 sales ($164.9M), by 9 insiders.

QuarterBoughtSold
Q2 2026—−$63.2M62 sales · 61 on a plan
Q1 2026—−$97.7M14 sales
Q4 2025+$2.1M4 buys−$4M2 sales
Q3 2025——
Q2 2025——
Q1 2025—−$140M28 sales
Q4 2024——
Q3 2024——
Largest purchase
+$1.1M of CLS by Koellner Laurette T (Director) on Oct 30, 2025.
Largest sale
−$54M of CLS by Mionis Robert (Chief Executive Officer) on Feb 03, 2025.

Open-market transactions through Jun 30, 2026most recent first

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$940.5K

    Jun 17, 2026

    2,440 sh · $385.44

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$915.9K

    Jun 17, 2026

    2,352 sh · $389.40

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$711.1K

    Jun 17, 2026

    1,850 sh · $384.36

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$659.9K

    Jun 17, 2026

    1,721 sh · $383.42

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$606.1K

    Jun 17, 2026

    1,560 sh · $388.51

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$584.8K

    Jun 17, 2026

    1,510 sh · $387.27

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$581.3K

    Jun 17, 2026

    1,520 sh · $382.43

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$574.9K

    Jun 17, 2026

    1,515 sh · $379.50

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$552.7K

    Jun 17, 2026

    1,431 sh · $386.25

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$289.9K

    Jun 17, 2026

    760 sh · $381.45

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$225.9K

    Jun 17, 2026

    579 sh · $390.18

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$166.2K

    Jun 17, 2026

    437 sh · $380.25

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$129K

    Jun 17, 2026

    341 sh · $378.37

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$62.7K

    Jun 17, 2026

    160 sh · $392.11

  • Mionis Robert10b5-1

    Chief Executive Officer · Director

    −$2.7M

    Jun 16, 2026

    7,017 sh · $387.05

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

Celestica Inc. company record

SEC industry classification
Printed Circuit Boards
Headquarters
Toronto, A6
Incorporated in
A6
Listed on
NYSE
SEC Central Index Key
0001030894

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.

After insiders bought CLS

What the stock actually did in the 90 days following each open-market purchase

Don't check CLS — let it ping you

Get told the moment an insider moves on CLS

Pro watches Celestica Inc. for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add CLS to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track CLS on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read CLS insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are CLS insiders buying or selling?
Between Aug 05, 2026 and Aug 13, 2026, 1 Celestica Inc. insider made no open-market purchases and 24 sales worth $27.3M, a net sale of $27.3M. 24 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much CLS stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 11 Celestica Inc. insiders made 4 open-market purchases worth $2.1M and 106 sales worth $304.8M. 61 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: 4 purchases ($2.1M) and 78 sales ($164.9M). The largest purchase was Koellner Laurette T buying $1.1M on Oct 30, 2025. The largest sale was Mionis Robert selling $54M on Feb 03, 2025.
What was the largest recent CLS insider trade?
Mionis Robert (Chief Executive Officer · Director) sold $5M of CLS stock on Aug 05, 2026 at about $369.47 a share, under a pre-scheduled 10b5-1 plan.
When did an insider last buy CLS shares?
No open-market purchase by a Celestica Inc. insider appears in the filings from Aug 05, 2026 to Aug 13, 2026 — every recorded open-market transaction in that period was a sale. Before that, the most recent purchase in SEC's data was Koellner Laurette T buying $1.1M on Oct 30, 2025.
Where does CLS insider trading data come from?
From the Form 4 filings Celestica Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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