Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

NORTHERN TRUST CORP

NTRS · Nasdaq · CIK 0000073124 · Financial Services · Asset Management

INSIDER SIGNAL

No active buy signal

2 qualifying P purchase groups
in the current 180-day scoring window

58 Form 4 transaction lines observed in the same window
6 sales · 50 option, withholding, award, gift or other lines

Last qualifying purchase2026-07-29 · Moritz Robert Edward Jr. · $45.8K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying2 qualifying line group(s)
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Thompson DonaldDirector
○○○○○
Dhandapani ChandraDirector
○○○○
Harrison Dean MDirector
○○○○
South Thomas AExecutive Vice President
○○▼
SMITH DAVID BYRON JRDirector
○○○
Tribbett Charles ADirector
○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 10 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Moritz Robert Edward Jr. · $83.2K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-01–2026-05-01

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-07-29 · Moritz Robert Edward Jr..

Recent Form 4 activity

6Purchases
17Sales
128Other Form 4 lines
116SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING6 sale line(s) · context only
OTHER50 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
3,769,582
Previous report
3,931,230
Avg daily volume
1,077,461
Days to cover
3.5

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-29Moritz Robert Edward Jr.Purchase (P)Common Stock255USD 179.57USD 45,790SEC filing ↗
2026-05-01Moritz Robert Edward Jr.Purchase (P)Common Stock225USD 166.41USD 37,442SEC filing ↗
2026-02-05Petrino RichardPurchase (P)Common Stock1,000USD 148.91USD 148,910SEC filing ↗
2026-02-02Moritz Robert Edward Jr.Purchase (P)Common Stock245USD 151.85USD 37,203SEC filing ↗
2025-11-04Moritz Robert Edward Jr.Purchase (P)Common Stock3,891USD 128.57USD 500,266SEC filing ↗
2025-10-27Moritz Robert Edward Jr.Purchase (P)Common Stock270USD 126.66USD 34,198SEC filing ↗
2025-08-13Moritz Robert Edward Jr.Purchase (P)Common Stock256USD 126.34USD 32,343SEC filing ↗
2025-04-24Moritz Robert Edward Jr.Purchase (P)Common Stock112USD 91.62USD 10,261SEC filing ↗
2023-10-25Tyler Jason J.Purchase (P)Common Stock400USD 62.69USD 25,076SEC filing ↗
2023-10-24Tyler Jason J.Purchase (P)Common Stock1,350USD 64.55USD 87,142SEC filing ↗
2023-10-24Levy Susan CohenPurchase (P)Common Stock5,000USD 64.41USD 322,050SEC filing ↗
2023-10-23O'Grady MichaelPurchase (P)Common Stock20,000USD 65.10USD 1,302,000SEC filing ↗
2023-06-20Cherecwich PeterPurchase (P)Common Stock4USD 73.55USD 294SEC filing ↗
2023-04-17Prado Becerra Jose LuisPurchase (P)Common Stock1USD 85.61USD 86SEC filing ↗
2023-02-10Cherecwich PeterPurchase (P)Common Stock2USD 97.19USD 194SEC filing ↗

Form 4 evidence

151 transaction lines in the latest 365-day window; 1,107 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01Tribbett Charles AAward / grant (A)Common Stock80USD 169.20USD 13,563SEC filing ↗
2026-10-01Thompson DonaldAward / grant (A)Common Stock145USD 169.20USD 24,592SEC filing ↗
2026-10-01SLARK MARTIN PAward / grant (A)Common Stock71USD 169.20USD 11,954SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01Tribbett Charles AAward / grant (A)Common Stock80USD 169.20USD 13,563SEC filing ↗
2026-10-01Thompson DonaldAward / grant (A)Common Stock145USD 169.20USD 24,592SEC filing ↗
2026-10-01SLARK MARTIN PAward / grant (A)Common Stock71USD 169.20USD 11,954SEC filing ↗
2026-10-01Petrino RichardAward / grant (A)Common Stock6USD 169.20USD 1,047SEC filing ↗
2026-10-01Mehta Siddharth NAward / grant (A)Common Stock31USD 169.20USD 5,215SEC filing ↗
2026-10-01Klevorn Marcy SAward / grant (A)Common Stock65USD 169.20USD 11,062SEC filing ↗
2026-10-01Harrison Dean MAward / grant (A)Common Stock152USD 169.20USD 25,646SEC filing ↗
2026-10-01Dhandapani ChandraAward / grant (A)Common Stock31USD 169.20USD 5,210SEC filing ↗
2026-10-01CROWN SUSANAward / grant (A)Common Stock Units87USD 169.20USD 14,700SEC filing ↗
2026-09-30Thompson DonaldAward / grant (A)Common Stock221USD 169.36USD 37,500SEC filing ↗
2026-09-30Harrison Dean MAward / grant (A)Common Stock266USD 169.36USD 45,001SEC filing ↗
2026-09-30Dhandapani ChandraAward / grant (A)Common Stock207USD 169.36USD 35,000SEC filing ↗
2026-09-01Hunstad MichaelTax withholding (F)Common Stock622USD 183.86USD 114,361SEC filing ↗
2026-08-24South Thomas ASale (S)Common Stock1,800USD 184.90USD 332,820SEC filing ↗
2026-07-31SMITH DAVID BYRON JRGift (G)Common Stock1,120USD 0.00USD 0SEC filing ↗
2026-07-29Moritz Robert Edward Jr.Purchase (P)Common Stock255USD 179.57USD 45,790SEC filing ↗
2026-07-01Tribbett Charles AAward / grant (A)Common Stock70USD 175.60USD 12,274SEC filing ↗
2026-07-01Thompson DonaldAward / grant (A)Common Stock126USD 175.60USD 22,082SEC filing ↗
2026-07-01SLARK MARTIN PAward / grant (A)Common Stock62USD 175.60USD 10,817SEC filing ↗
2026-07-01Petrino RichardAward / grant (A)Common Stock5USD 175.60USD 946SEC filing ↗
2026-07-01Mehta Siddharth NAward / grant (A)Common Stock27USD 175.60USD 4,720SEC filing ↗
2026-07-01Klevorn Marcy SAward / grant (A)Common Stock57USD 175.60USD 10,011SEC filing ↗
2026-07-01Harrison Dean MAward / grant (A)Common Stock131USD 175.60USD 22,997SEC filing ↗
2026-07-01Dhandapani ChandraAward / grant (A)Common Stock26USD 175.60USD 4,555SEC filing ↗
2026-07-01CROWN SUSANAward / grant (A)Common Stock Units76USD 175.60USD 13,302SEC filing ↗
2026-06-30Thompson DonaldAward / grant (A)Common Stock216USD 173.84USD 37,501SEC filing ↗
2026-06-30Harrison Dean MAward / grant (A)Common Stock259USD 173.84USD 45,000SEC filing ↗
2026-06-30Dhandapani ChandraAward / grant (A)Common Stock201USD 173.84USD 34,999SEC filing ↗
2026-06-03Hallinan AengusSale (S)Common Stock3,668USD 167.36USD 613,880SEC filing ↗
2026-06-01Hallinan AengusTax withholding (F)Common Stock2,707USD 166.82USD 451,582SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerNTRS
CIK0000073124
SectorFinancial Services
IndustryAsset Management Yahoo Finance
SEC SIC6022 State Commercial Banks
ExchangeNasdaq

Data coverage

Local Form 4 history1,107 transaction lines from 2020-01-01 to 2026-10-01
33 P purchase lines · 112 S sale lines · 962 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.