Microsoft files preliminary multi-tranche notes offering

Microsoft filed a preliminary prospectus supplement on Thursday for a multi-tranche dollar notes offering of floating-rate and fixed-rate maturities, with amounts, coupons and maturity years left blank subject to completion.

Why it matters: A new Microsoft bond deal, launched the morning after its quarterly filing, adds to the run of large technology issuance funding the AI buildout, and its final size and pricing will set the day's reference point for that supply.

Data as of Microsoft Form 424B2 preliminary prospectus supplement (accession 0001193125-26-437008), filed October 29, 2026 and read from the local EDGAR copy in this run. The supplement is marked subject to completion: aggregate amounts, coupons, spreads and maturity years are blank in the document, and no final terms are claimed. Developing item.

Microsoft is in the market with a new multi-tranche dollar bond offering. A preliminary prospectus supplement on Form 424B2, filed on Thursday morning, covers floating-rate notes and a series of fixed-rate notes across several maturities, under the company’s December 12, 2024 base prospectus. Every economic term in the preliminary document is blank: no tranche sizes, coupons, spreads or maturity years are stated, and the supplement is marked subject to completion, dated October 29, 2026.

The filing landed the morning after Microsoft’s quarterly report on Form 10-Q, filed on October 28, and final terms, when priced, will be set in a completed supplement. Until then the size of the deal, and what it says about the pace of the company’s data centre funding, cannot be stated from the filing itself.

Microsoft files preliminary multi-tranche notes offering

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