Northern Trust Corp (NTRS) 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 2, 2026.
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- Filings shown
- 17
- Open-market buys
- 1
- Open-market sells
- 1
- Buys, 10b5-1 box not checked
- 1 of 1
Counts cover the 17 most recent Form 4 filings Tradune holds for NTRS (filed Jul 2 – Oct 2, 2026); the score below covers only the trailing 90 days (1 buy, 1 sell). No completed check of NTRS's Form 4 list on SEC EDGAR is on record yet; the latest NTRS filing Tradune holds was filed Oct 2, 2026. This is not guaranteed to be the complete record — see NTRS'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 13 filings Tradune holds for NTRS filed Jul 30 – Oct 2, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
1 open-market sale 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
- 1 sale· 1,800 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. SouthExecutive Vice President | 0 | 1 | — | 1,800 | −$332,820 |
| Robert Edward Moritz Jr.Director | 1 | 0 | 255 | — | +$45,790 |
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 NTRS
Insiders reported 1 open-market purchase of NTRS between Jul 2, 2026 and Oct 2, 2026, across 1 distinct buyer. The most recent purchase was reported by Robert Edward Moritz Jr. (Director) on Jul 29, 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 | 31 | $169.20 | 7,147 | +0.4% | Oct 1, 2026 |
| Grant / award | 207 | $169.36 | 7,116 | +3.0% | 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 |
|---|---|---|---|---|---|
| Grant / award | 6 | $169.20 | 4,350 | +0.1% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 65 | $169.20 | 13,625 | +0.5% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 152 | $169.20 | 35,322 | +0.4% | Oct 1, 2026 |
| Grant / award | 266 | $169.36 | 35,170 | +0.8% | Sep 30, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 145 | $169.20 | 32,045 | +0.5% | Oct 1, 2026 |
| Grant / award | 221 | $169.36 | 31,900 | +0.7% | Sep 30, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 80 | $169.20 | 35,949 | +0.2% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 31 | $169.20 | 12,518 | +0.2% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 87 | $169.20 | 38,847 | +0.2% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 71 | $169.20 | 22,468 | +0.3% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 622 | $183.86 | 25,223 | −2.4% | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 1,800 | $184.90 | 92,917 | −1.9% | Aug 24, 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 |
|---|---|---|---|---|---|
| Gift | 1,120 | — | 87,157 (indirect) | +1.3% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 255 | $179.57 | 8,400 | +3.1% | Jul 29, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 5 | $175.60 | 4,344 | +0.1% | Jul 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 126 | $175.60 | 31,678 | +0.4% | Jul 1, 2026 |
| Grant / award | 216 | $173.84 | 31,552 | +0.7% | Jun 30, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 70 | $175.60 | 35,868 | +0.2% | Jul 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 62 | $175.60 | 22,397 | +0.3% | Jul 1, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to NTRS's (Oct 2, 2026).
Frequently asked about NTRS insider activity
How many insiders bought NTRS stock in these Form 4 filings?
1 distinct insider at Northern Trust Corp reported 1 open-market purchase (Form 4 code P) of NTRS shares between Jul 2, 2026 and Oct 2, 2026, the most recent filed by Robert Edward Moritz Jr. (Director) on Jul 29, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for NTRS?
The most recent Form 4 on this page was filed by Martin P. Slark (Director) on Oct 2, 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 NTRS insider sale shown?
The largest open-market sale among the filings shown was 1,800 NTRS shares at $184.90 (about $332,820) by Thomas A. South (Executive Vice President) on Aug 24, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
Do the recent NTRS insider purchases have the Form 4 10b5-1 box checked?
No. The one NTRS open-market purchase shown was 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: Robert Edward Moritz Jr. (Director) on Jul 29, 2026, 255 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 NTRS 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.