Commercial Metals Co (CMC) 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 5, 2026.
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- Filings shown
- 10
- Open-market buys
- 2
- Open-market sells
- 0
- Buys, 10b5-1 box not checked
- 2 of 2
Counts cover the 10 most recent Form 4 filings Tradune holds for CMC (filed Jul 2 – Oct 5, 2026); the score below covers only the trailing 90 days (1 buy, 0 sells). No completed check of CMC's Form 4 list on SEC EDGAR is on record yet; the latest CMC filing Tradune holds was filed Oct 5, 2026. This is not guaranteed to be the complete record — see CMC'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 3 filings Tradune holds for CMC filed Aug 14 – Oct 5, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| John R. McPhersonDirector | 1 | 0 | 1,390 | — | +$99,969 |
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 →
Weekly signal history
CMC appeared in 2 archived weekly editions as a multi-insider cluster, a top net buyer, or both. These are frozen weekly snapshots, not a complete filing history.
- Week of Oct 7, 2026 2 insiders buying · $604,468 net
- Week of Sep 23, 2026 2 insiders buying · $604,468 net
An entry means this company met that edition’s displayed cluster or top-buyer threshold. Missing weeks do not mean no insider transaction occurred. All figures are derived from SEC Form 4 filings; open-market buys minus sales are shown as net only when every transaction value was disclosed.
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 CMC
Insiders reported 2 open-market purchases of CMC between Jul 2, 2026 and Oct 5, 2026, across 2 distinct buyers. The most recent purchase was reported by John R. McPherson (Director) on Aug 13, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 577 | $62.72 | 22,504 | +2.6% | Oct 1, 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 |
|---|---|---|---|---|---|
| Grant / award | 577 | $62.72 | 29,939 | +2.0% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 1,390 | $71.92 | 21,927 | +6.8% | Aug 13, 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 |
|---|---|---|---|---|---|
| Grant / award | 19 | $67.41 | 6,171 | +0.3% | Jul 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 7 | $67.41 | 13,298 | +0.1% | Jul 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 42 | $67.41 | 20,537 | +0.2% | Jul 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 4 | $67.41 | 2,772 | +0.1% | Jul 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 22 | $67.41 | 9,299 | +0.2% | Jul 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 8,230 | $61.30 | 181,522 | +4.7% | Jul 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 592 | $61.21 | 20,495 | +3.0% | Jul 1, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to CMC's (Oct 5, 2026).
Frequently asked about CMC insider activity
How many insiders bought CMC stock in these Form 4 filings?
2 distinct insiders at Commercial Metals Co reported 2 open-market purchases (Form 4 code P) of CMC shares between Jul 2, 2026 and Oct 5, 2026, the most recent filed by John R. McPherson (Director) on Aug 13, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for CMC?
The most recent Form 4 on this page was filed by Gary E. McCullough (Director) on Oct 5, 2026, reporting 1 transaction. 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 CMC insider purchase shown?
The largest open-market purchase among the filings shown was 8,230 CMC shares at $61.30 (about $504,499) by Peter R. Matt (President and CEO) on Jul 10, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
Do the recent CMC insider purchases have the Form 4 10b5-1 box checked?
No. All 2 CMC open-market purchases shown were reported with the Rule 10b5-1 box not checked. A blank box records what the filer disclosed; it does not prove that no plan exists. Latest: John R. McPherson (Director) on Aug 13, 2026, 1,390 shares.
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 CMC 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.