Form4insider filings, from the source

Company · CIK 0000073124 · SIC 6022 — State Commercial Banks · Nasdaq

NORTHERN TRUST CORP · NTRS

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $46k · 1sales $947k · 2net −$901k
$10k$10k$100k$100k$1M$1MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 FForm 4 →Sep 3, 4:40 pm EDTMichael HunstadPresident/Asset Management622$183.86$114,36125,223—
Aug 24, 2026 SForm 4 →Aug 25, 4:18 pm EDTThomas A SouthExecutive Vice President1,800$184.90$332,82092,917−1.90%
Jul 31, 2026 GForm 4 →Aug 4, 6:35 pm EDTDavid Byron Smith Jr.Director1,120——87,157—
Jul 29, 2026 PForm 4 →Jul 30, 4:06 pm EDTRobert Edward Moritz Jr.Director255$179.57$45,7908,400+3.13%
Jul 1, 2026 AForm 4 →Jul 2, 5:50 pm EDTCharles A TribbettDirector70$175.60$12,27435,868—
Jul 1, 2026 AForm 4 →Jul 2, 5:50 pm EDTMartin P SlarkDirector62$175.60$10,81722,397—
Jul 1, 2026 AForm 4 →Jul 2, 5:50 pm EDTRichard PetrinoDirector5$175.60$9464,344—
Jul 1, 2026 AForm 4 →Jul 2, 5:49 pm EDTSiddharth N MehtaDirector27$175.60$4,72012,488—
Jul 1, 2026 AForm 4 →Jul 2, 5:49 pm EDTMarcy S KlevornDirector57$175.60$10,01113,560—
Jul 1, 2026 AForm 4 →Jul 2, 5:49 pm EDTSusan CrownDirector76$175.60$13,30238,760—
Jun 30, 2026 AForm 4 →Jul 2, 5:50 pm EDTDonald ThompsonDirector341$174.49$59,58231,678—
Jun 30, 2026 AForm 4 →Jul 2, 5:49 pm EDTDean M HarrisonDirector390$174.43$67,99734,905—
Jun 30, 2026 AForm 4 →Jul 2, 5:49 pm EDTChandra DhandapaniDirector227$174.04$39,5546,909—
Jun 3, 2026 SForm 4 →Jun 4, 6:05 pm EDTAengus HallinanExecutive Vice President3,668$167.36$613,8809,461−27.9%

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.