Celestica Inc (CLS) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 1, 2026.
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- Filings shown
- 19
- Open-market buys
- 0
- Open-market sells
- 88
Counts cover the 19 most recent Form 4 filings Tradune holds for CLS (filed Aug 3 – Oct 1, 2026). No completed check of CLS's Form 4 list on SEC EDGAR is on record yet; the latest CLS filing Tradune holds was filed Oct 1, 2026. This is not guaranteed to be the complete record — see CLS's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 19 filings Tradune holds for CLS filed Aug 3 – Oct 1, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
88 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 88 sales· 243,067 sh
- checkbox disclosed
- On filings with the box not checked
- 0 sales· 0 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Robert MionisChief Executive Officer | 0 | 63 | — | 205,949 | −$75,682,004 |
| Mandeep ChawlaChief Financial Officer | 0 | 24 | — | 17,000 | −$6,275,983 |
| Todd C. CooperPresident | 0 | 1 | — | 20,118 | −$7,242,480 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at CLS
No open-market insider purchases (Form 4 code P) were reported for CLS in the trailing 90 days. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Restricted Share Units | 52 | — | — | — | Sep 30, 2026 |
| Option exercise | 52 | — | 278 | +23% | Sep 30, 2026 |
| Tax withholding | 6 | $366.47 | 272 | −2.2% | Sep 30, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Restricted Share Units | 96 | — | — | — | Sep 30, 2026 |
| Tax withholding | 7 | $366.47 | 505 | −1.4% | Sep 30, 2026 |
| Option exercise | 96 | — | 512 | +23% | Sep 30, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 20,118 | $360.00 | 73,252 | −22% | Sep 23, 2026 |
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 3,403 | $364.67 | 10,709 (indirect) | −24% | Sep 23, 2026 |
| Open-market sale 10b5-1 box checked | 6,749 | $365.69 | 3,960 (indirect) | −63% | Sep 23, 2026 |
| Open-market sale 10b5-1 box checked | 3,672 | $366.44 | 288 (indirect) | −93% | Sep 23, 2026 |
| Open-market sale 10b5-1 box checked | 288 | $367.34 | 0 (indirect) | −100% | Sep 23, 2026 |
| Open-market sale 10b5-1 box checked | 1,920 | $360.36 | 21,476 (indirect) | −8.2% | Sep 23, 2026 |
| Open-market sale 10b5-1 box checked | 2,294 | $361.22 | 19,182 (indirect) | −11% | Sep 23, 2026 |
| Open-market sale 10b5-1 box checked | 2,480 | $362.48 | 16,702 (indirect) | −13% | Sep 23, 2026 |
| Open-market sale 10b5-1 box checked | 2,590 | $363.46 | 14,112 (indirect) | −16% | Sep 23, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 4,030 | $364.49 | 23,657 (indirect) | −15% | Aug 13, 2026 |
| Open-market sale 10b5-1 box checked | 5,554 | $360.37 | 41,338 (indirect) | −12% | Aug 13, 2026 |
| Open-market sale 10b5-1 box checked | 4,941 | $361.44 | 36,397 (indirect) | −12% | Aug 13, 2026 |
| Open-market sale 10b5-1 box checked | 3,440 | $362.58 | 32,957 (indirect) | −9.5% | Aug 13, 2026 |
| Open-market sale 10b5-1 box checked | 5,270 | $363.52 | 27,687 (indirect) | −16% | Aug 13, 2026 |
| Open-market sale 10b5-1 box checked | 261 | $365.34 | 23,396 (indirect) | −1.1% | Aug 13, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Restricted Share Units | 1,271 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 133 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 190 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 142 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 317 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 190 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 203 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 142 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Director Restricted Share Units | 133 | — | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 1,092 | $361.89 | 96,861 (indirect) | −1.1% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 5,909 | $362.38 | 90,952 (indirect) | −6.1% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 3,419 | $363.56 | 87,533 (indirect) | −3.8% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 3,501 | $364.20 | 84,032 (indirect) | −4.0% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 1,061 | $365.67 | 82,971 (indirect) | −1.3% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 50 | $366.65 | 82,921 (indirect) | −0.1% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 1,070 | $367.76 | 81,851 (indirect) | −1.3% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 4,358 | $368.57 | 77,493 (indirect) | −5.3% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 13,414 | $369.47 | 64,079 (indirect) | −17% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 6,674 | $370.45 | 57,405 (indirect) | −10% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 4,876 | $371.45 | 52,529 (indirect) | −8.5% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 1,073 | $372.42 | 51,456 (indirect) | −2.0% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 983 | $373.43 | 50,473 (indirect) | −1.9% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 1,536 | $374.55 | 48,937 (indirect) | −3.0% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 1,247 | $375.41 | 47,690 (indirect) | −2.5% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 502 | $376.50 | 47,188 (indirect) | −1.1% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 256 | $377.38 | 46,932 (indirect) | −0.5% | Aug 5, 2026 |
| Open-market sale 10b5-1 box checked | 40 | $378.50 | 46,892 (indirect) | −0.1% | Aug 5, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 1,051 | $361.66 | 142,797 (indirect) | −0.7% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 9,564 | $360.28 | 41,277 (indirect) | −19% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,331 | $361.52 | 39,946 (indirect) | −3.2% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,895 | $362.35 | 38,051 (indirect) | −4.7% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 5,887 | $363.57 | 32,164 (indirect) | −15% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,940 | $364.58 | 30,224 (indirect) | −6.0% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,939 | $365.53 | 28,285 (indirect) | −6.4% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 5,254 | $366.72 | 23,031 (indirect) | −19% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 5,629 | $367.64 | 17,402 (indirect) | −24% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 5,841 | $368.60 | 11,561 (indirect) | −34% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 3,522 | $369.31 | 8,039 (indirect) | −30% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 447 | $370.37 | 7,592 (indirect) | −5.6% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 2,401 | $371.67 | 5,191 (indirect) | −32% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 3,986 | $372.42 | 1,205 (indirect) | −77% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,205 | $373.34 | 0 (indirect) | −100% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,717 | $360.43 | 143,848 (indirect) | −1.2% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 5,785 | $371.63 | 137,012 (indirect) | −4.1% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 22,375 | $372.48 | 114,637 (indirect) | −16% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 13,131 | $373.43 | 101,506 (indirect) | −11% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 3,553 | $374.16 | 97,953 (indirect) | −3.5% | Aug 4, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 1,534 | $360.18 | 80,027 | −1.9% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 280 | $361.56 | 79,747 | −0.3% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 240 | $362.50 | 79,507 | −0.3% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 960 | $363.50 | 78,547 | −1.2% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 520 | $364.58 | 78,027 | −0.7% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 320 | $365.55 | 77,707 | −0.4% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 480 | $366.61 | 77,227 | −0.6% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,080 | $367.56 | 76,147 | −1.4% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,200 | $368.56 | 74,947 | −1.6% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $369.24 | 74,547 | −0.5% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 120 | $370.60 | 74,427 | −0.2% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 1,277 | $371.67 | 73,150 | −1.7% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 4,185 | $372.45 | 68,965 | −5.7% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 2,761 | $373.42 | 66,204 | −4.0% | Aug 4, 2026 |
| Open-market sale 10b5-1 box checked | 760 | $374.16 | 65,444 | −1.1% | Aug 4, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 340 | $360.47 | 60,044 (indirect) | −0.6% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 67 | $361.11 | 59,977 (indirect) | −0.1% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 1,136 | $363.14 | 58,841 (indirect) | −1.9% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 1,640 | $364.47 | 57,201 (indirect) | −2.8% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 40 | $365.00 | 57,161 (indirect) | −0.1% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 660 | $366.48 | 56,501 (indirect) | −1.2% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 2,280 | $368.86 | 54,221 (indirect) | −4.0% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 223 | $372.46 | 51,161 (indirect) | −0.4% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 240 | $373.60 | 50,921 (indirect) | −0.5% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 80 | $374.49 | 50,841 (indirect) | −0.2% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 2,837 | $370.02 | 51,384 (indirect) | −5.2% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 40 | $374.03 | 81,561 | −0.0% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 83 | $360.00 | 82,361 | −0.1% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 160 | $362.58 | 82,201 | −0.2% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 80 | $364.63 | 82,121 | −0.1% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 160 | $366.01 | 81,961 | −0.2% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 120 | $367.60 | 81,841 | −0.1% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 40 | $368.90 | 81,801 | −0.0% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 80 | $370.00 | 81,721 | −0.1% | Jul 31, 2026 |
| Open-market sale 10b5-1 box checked | 120 | $371.51 | 81,601 | −0.1% | Jul 31, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to CLS's (Oct 1, 2026).
Frequently asked about CLS insider activity
How many insiders bought CLS stock in the last 90 days?
No open-market purchases (Form 4 code P) of CLS shares were reported by Celestica Inc insiders in the trailing 90 days. The 19 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for CLS?
The most recent Form 4 on this page was filed by Jill Kale (Director) on Oct 1, 2026, reporting 3 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market CLS insider sale shown?
The largest open-market sale among the filings shown was 22,375 CLS shares at $372.48 (about $8,334,240) by Robert Mionis (Chief Executive Officer) on Aug 4, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track CLS insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.