Atmos Energy Corp (ATO) 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
- 13
- Open-market buys
- 1
- Open-market sells
- 0
Counts cover the 13 most recent Form 4 filings Tradune holds for ATO (filed May 4 – Oct 5, 2026); the score below covers only the trailing 90 days (1 buy, 0 sells). No completed check of ATO's Form 4 list on SEC EDGAR is on record yet; the latest ATO filing Tradune holds was filed Oct 5, 2026. This is not guaranteed to be the complete record — see ATO'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 5 filings Tradune holds for ATO filed Aug 12 – 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 |
|---|---|---|---|---|---|
| William James WareDirector | 1 | 0 | 300 | — | +$50,278 |
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 ATO
Insiders reported 1 open-market purchase of ATO between May 4, 2026 and Oct 5, 2026, across 1 distinct buyer. The most recent purchase was reported by William James Ware (Director) on Aug 11, 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 Phantom Deferred Compensation | 225 | $155.79 | — | — | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 77 | $155.79 | 334 | +30% | 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 |
|---|---|---|---|---|---|
| Gift | 1,500 | — | 25,866 | −5.5% | Sep 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Stock Units | 1,000 | $166.96 | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase | 300 | $167.59 | — | — | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Phantom Deferred Compensation | 188 | $172.92 | — | — | Jul 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 65 | $172.92 | — | — | Jul 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 2,815 | $189.74 | — | — | May 2, 2026 |
| Tax withholding | 1,042 | $189.74 | — | — | May 2, 2026 |
| Option exercise Restricted Stock Unit | 2,815 | — | — | — | May 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 2,815 | $189.74 | — | — | May 2, 2026 |
| Tax withholding | 1,042 | $189.74 | — | — | May 2, 2026 |
| Option exercise Restricted Stock Unit | 2,815 | — | — | — | May 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Restricted Stock Unit | 2,815 | — | — | — | May 2, 2026 |
| Tax withholding | 1,042 | $189.74 | — | — | May 2, 2026 |
| Option exercise | 2,815 | $189.74 | — | — | May 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 3,970 | $189.74 | — | — | May 2, 2026 |
| Tax withholding | 1,563 | $189.74 | — | — | May 2, 2026 |
| Option exercise Restricted Stock Unit | 3,970 | — | — | — | May 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 175 | $189.74 | — | — | May 2, 2026 |
| Tax withholding | 70 | $189.74 | — | — | May 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 6,235 | $187.74 | — | — | May 2, 2026 |
| Option exercise | 16,850 | $189.74 | — | — | May 2, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to ATO's (Oct 5, 2026).
Frequently asked about ATO insider activity
How many insiders bought ATO stock in these Form 4 filings?
1 distinct insider at Atmos Energy Corp reported 1 open-market purchase (Form 4 code P) of ATO shares between May 4, 2026 and Oct 5, 2026, the most recent filed by William James Ware (Director) on Aug 11, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for ATO?
The most recent Form 4 on this page was filed by Rafael G. Garza (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 ATO insider purchase shown?
The largest open-market purchase among the filings shown was 300 ATO shares at $167.59 (about $50,278) by William James Ware (Director) on Aug 11, 2026. Value is shares × the price reported on the Form 4; trades may be made under a prearranged Rule 10b5-1 plan.
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 ATO 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.