Gatx Corp (GATX) 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 Sep 11, 2026.
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- Filings shown
- 16
- Open-market buys
- 0
- Open-market sells
- 10
Counts cover the 16 most recent Form 4 filings Tradune holds for GATX (filed Aug 4 – Sep 11, 2026). No completed check of GATX's Form 4 list on SEC EDGAR is on record yet; the latest GATX filing Tradune holds was filed Sep 11, 2026. This is not guaranteed to be the complete record — see GATX'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 16 filings Tradune holds for GATX filed Aug 4 – Sep 11, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
10 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 0 sales· 0 sh
- checkbox disclosed
- On filings with the box not checked
- 10 sales· 25,300 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 |
|---|---|---|---|---|---|
| Thomas A. EllmanEVP & CFO | 0 | 3 | — | 18,200 | −$3,277,410 |
| Geoffrey PhillipsSr. VP, Operations | 0 | 3 | — | 2,500 | −$443,992 |
| Jennifer Van AkenSr VP Treasurer & CRO | 0 | 2 | — | 1,700 | −$307,200 |
| John SbragiaSVP, Engineering and Quality | 0 | 1 | — | 1,900 | −$342,759 |
| Eren DoygunSVP Chief Plan. & Invest. Off. | 0 | 1 | — | 1,000 | −$179,519 |
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 GATX
No open-market insider purchases (Form 4 code P) were reported for GATX 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 | 2,500 | $77.07 | 2,501 | from 1 sh | Sep 11, 2026 |
| Open-market sale 10b5-1 box not checked | 1,700 | $177.12 | 801 | −68% | Sep 11, 2026 |
| Open-market sale 10b5-1 box not checked | 500 | $178.07 | 301 | −62% | Sep 11, 2026 |
| Open-market sale 10b5-1 box not checked | 300 | $179.51 | 1 | −100% | Sep 11, 2026 |
| Option exercise 2020 NQ Stock Option (Right to Buy) | 2,500 | — | — | — | Sep 11, 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.
“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 |
|---|---|---|---|---|---|
| Gift | 6,472 | — | 1 | −100% | Sep 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 1,000 | $179.52 | 5,323 | −16% | Aug 26, 2026 |
| Option exercise | 1,000 | $77.07 | 6,323 | +19% | Aug 26, 2026 |
| Option exercise 2020 NQ Stock Option (Right to Buy) | 1,000 | — | — | — | Aug 26, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 47 | $179.63 | 6,820 | −0.7% | Aug 15, 2026 |
| Option exercise | 1,900 | $77.07 | 8,767 | +28% | Aug 14, 2026 |
| Open-market sale 10b5-1 box not checked | 1,900 | $180.40 | 6,867 | −22% | Aug 14, 2026 |
| Option exercise 2020 NQ Stock Option (Right to Buy) | 1,900 | — | — | — | Aug 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 70 | $179.63 | 7,212 | −1.0% | Aug 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 70 | $179.63 | 6,473 | −1.1% | Aug 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 9,452 | $179.62 | 43,109 | −18% | Aug 5, 2026 |
| Option exercise | 18,200 | $77.07 | 52,561 | +53% | Aug 5, 2026 |
| Open-market sale 10b5-1 box not checked | 8,641 | $180.56 | 34,468 | −20% | Aug 5, 2026 |
| Open-market sale 10b5-1 box not checked | 107 | $181.20 | 34,361 | −0.3% | Aug 5, 2026 |
| Option exercise 2020 NQ Stock Option (Right to Buy) | 18,200 | — | — | — | Aug 5, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 28 | $177.91 | 9,430 | +0.3% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 142 | $177.91 | 4,308 | +3.4% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 130 | $177.91 | 1,645 | +8.6% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 142 | $177.91 | 4,464 | +3.3% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 118 | $177.91 | 34,277 | +0.3% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 70 | $177.91 | 19,904 | +0.4% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 164 | $177.91 | 49,470 | +0.3% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 130 | $177.91 | 42,420 | +0.3% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 1,700 | $77.07 | 7,616 | +29% | Aug 3, 2026 |
| Open-market sale 10b5-1 box not checked | 1,372 | $180.58 | 6,244 | −18% | Aug 3, 2026 |
| Open-market sale 10b5-1 box not checked | 328 | $181.23 | 5,916 | −5.3% | Aug 3, 2026 |
| Option exercise 2020 NQ Stock Option (Right to Buy) | 1,700 | — | — | — | Aug 3, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to GATX's (Sep 11, 2026).
Frequently asked about GATX insider activity
How many insiders bought GATX stock in the last 90 days?
No open-market purchases (Form 4 code P) of GATX shares were reported by Gatx Corp insiders in the trailing 90 days. The 16 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for GATX?
The most recent Form 4 on this page was filed by Geoffrey Phillips (Sr. VP, Operations) on Sep 11, 2026, reporting 5 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 GATX insider sale shown?
The largest open-market sale among the filings shown was 9,452 GATX shares at $179.62 (about $1,697,797) by Thomas A. Ellman (EVP & CFO) on Aug 5, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not 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 GATX 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.