Offerings // MARSH & MCLENNAN COMPANIES, INC.

MRSH offering history

Every offering-related filing in MARSH & MCLENNAN COMPANIES, INC.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,001 filings back to Mar 30, 2018.

Last executed offering

Oct 22, 2026

424B2 — priced deal (shares or notes)

Last registration (announced)

Jul 24, 2024

S-3ASR — capacity, not a sale

Executed, last 12 months

424B pricings + 8-K 3.02 sales

Registered, last 12 months

S-1/S-3/F-series registrations

Date	Filing		What it means
Oct 22, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 20, 2026	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Oct 19, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 13, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 11, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 11, 2026	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 1, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 31, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Oct 30, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jul 24, 2024	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Feb 15, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 14, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 14, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Sep 7, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 6, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 6, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Mar 8, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Mar 6, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Mar 6, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Oct 26, 2022	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 24, 2022	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 24, 2022	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Dec 3, 2021	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Dec 1, 2021	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Dec 1, 2021	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jul 27, 2021	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
May 5, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 4, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 4, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Mar 21, 2019	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Mar 20, 2019	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Mar 20, 2019	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Mar 15, 2019	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Mar 14, 2019	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Mar 8, 2019	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jan 10, 2019	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jan 9, 2019	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jan 8, 2019	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jul 30, 2018	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)

MRSH offering-related filings from SEC EDGAR, newest first (capped at 40). Each links to the original document.

Two honest limits. (1) A 424B takedown can price shares or notes — EDGAR’s metadata doesn’t say which, so open the document: large investment-grade filers use these mostly for bond deals (no dilution), small-caps mostly for shares. (2) At-the-market (ATM) programs sell shares gradually and individual sales are not separately filed — the visible footprint is the enabling shelf and its 424B5; actual ATM share counts surface later in the 10-Q/10-K share count. Educational information from public filings, not investment advice.

Is a shelf active now? →Do they need money? →Red flags →Full MRSH workspace →

MRSH offering FAQ

When did MRSH last execute an offering?

Per SEC filings, MARSH & MCLENNAN COMPANIES, INC.'s most recent priced offering document is a 424B2 filed 2026-10-22. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did MRSH last announce or register an offering?

The most recent registration is a S-3ASR filed 2024-07-24. A registration is capacity to sell shares — not a sale.

Does an offering always mean dilution?

Registered direct offerings and shelf takedowns issue new shares and dilute existing holders. Resale registrations (424B3/B7) let existing holders sell and do not create new shares. Secondary sales by insiders also do not dilute. Each row here is labeled with what it is.

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