MOS 424B5: Secondary offering
The Mosaic Company
Filed with the SEC on · accession 0001193125-26-341376
MOS filed a 424B5 (prospectus (offering)) with the SEC on Aug 10, 2026. The final terms of an offering of shares or bonds. The stock moved +1.8% by the first close after the filing.
Summary of the filing
The Mosaic Company filed a preliminary prospectus supplement for a public offering of senior notes in three series, with aggregate principal amounts and interest rates to be determined, under a shelf registration statement.
Key details
How MOS stock reacted
Close before
$23.06
Aug 7, 2026
First close after
+1.78%
$23.47
5 trading days
-6.29%
$21.61
Since filing
-3.04%
$22.36
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Click hereFrequently asked questions
What did MOS file with the SEC on Aug 10, 2026?
MOS filed a 424B5 (Secondary offering). The Mosaic Company filed a preliminary prospectus supplement for a public offering of senior notes in three series, with aggregate principal amounts and interest rates to be determined, under a shelf registration statement.
What does a secondary offering mean for MOS stock?
New shares dilute existing holders and are often sold at a discount to the market price.
How do I read a 424B5?
The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.
How did MOS stock react to this filing?
MOS closed at $23.06 before the filing and $23.47 on Aug 10, 2026 (+1.78%). Five trading days later: $21.61 (-6.29%).
Other MOS SEC filings
- 10-Q · SEC filingNov 4, 2026
- 8-K · SEC filingNov 3, 2026
- 8-K · Executive departureSep 25, 2026
- 8-K · SEC filingAug 28, 2026
- 8-K · Material agreementAug 17, 2026
- 8-K · Tender offerAug 17, 2026
- 8-K · Tender offerAug 14, 2026
- SCHEDULE 13G · SEC filingAug 12, 2026
- 424B5 · Secondary offeringAug 12, 2026
- 8-K · Tender offerAug 10, 2026
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