Katherine Brennan

Katherine Brennan is a declared insider of Marsh & Mclennan Companies, Inc., with filings sourced from SEC (Form 4). In total, 6 filings cover trades dated from 28 February 2023 to 2 September 2026.

Sales make up the whole of the open-market record (1 sale, €194k). The rest of the record consists of 5 option exercises. Since January 2026: no purchases and 1 sale on the market.

The record was last updated on 3 September 2026 with an option exercise (€86k) in Marsh & Mclennan Companies, Inc. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. Section 16 rules allow two business days to file each Form 4. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.