MOSAIC CO·4

Mar 11, 4:08 PM ET

Flugel Russell A 4

4 · MOSAIC CO · Filed Mar 11, 2026

Research Summary

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Mosaic (MOS) Principal Accounting Officer Converts Units, Sells 2,384 Shares

What Happened
Russell A. Flugel, Principal Accounting Officer of Mosaic Co. (MOS), converted performance‑based derivative awards into 5,545 common shares (4,437 + 1,108) on March 9, 2026 (reported as exercise/conversion, code M). He sold 2,384 of those shares to cover tax withholding at $26.92 per share, yielding $64,177. The filing also shows a reported derivative disposition of 4,437 shares at $0.00 (see footnotes).

Key Details

  • Transaction date: March 9, 2026. Form 4 filed March 11, 2026 (filed within the typical two‑business‑day window).
  • Acquisitions: 4,437 shares (M) and 1,108 shares (M) at $0.00 (conversion/exercise of derivative/performance units).
  • Dispositions: 2,384 shares sold (F) at $26.92 → proceeds $64,177; plus a reported derivative disposition of 4,437 shares at $0.00.
  • Shares owned after transaction: Not specified in the provided filing excerpt.
  • Relevant footnotes: F1 — shares issued upon vesting of a performance unit award (granted 3/9/2023); F2 — shares sold to cover tax liability from vesting; F3 — one‑for‑one; F5 — RSU vesting schedule referenced; F4 — not applicable.
  • Transaction codes: M = exercise/conversion of a derivative; F = payment of tax liability (share withholding).

Context
This was primarily a conversion/vesting event followed by a tax‑withholding sale — a routine administrative transaction rather than an open‑market discretionary sale. In plain terms, performance units converted into shares (no cash exercise price), and a portion of those shares were sold to satisfy taxes.

Insider Transaction Report

Form 4
Period: 2026-03-09
Flugel Russell A
Principal Accounting Officer
Transactions
  • Exercise/Conversion

    Common Stock

    2026-03-09+4,43713,737 total
  • Exercise/Conversion

    Common Stock

    [F1]
    2026-03-09+1,10814,845 total
  • Tax Payment

    Common Stock

    [F2]
    2026-03-09$26.92/sh2,384$64,17712,461 total
  • Exercise/Conversion

    Restricted Stock Units

    [F3][F4]
    2026-03-094,4370 total
    Exercise: $0.00From: 2026-03-09Common Stock (4,437 underlying)
Holdings
  • Restricted Stock Units

    [F3][F5][F4]
    Exercise: $0.00Common Stock (8,074 underlying)
    8,074
  • Restricted Stock Units

    [F3][F4]
    Exercise: $0.00From: 2027-03-05Common Stock (8,540 underlying)
    8,540
  • Restricted Stock Units

    [F3][F4]
    Exercise: $0.00From: 2027-11-18Common Stock (6,199 underlying)
    6,199
  • Restricted Stock Units

    [F3][F4]
    Exercise: $0.00From: 2028-03-04Common Stock (11,560 underlying)
    11,560
Footnotes (5)
  • [F1]Shares Issued to reporting person upon the vesting of a performance unit award granted to reporting person on March 9, 2023. The performance unit award was not a derivative security.
  • [F2]Shares sold to cover tax liability incurred as a result of most recent vesting of restricted stock and performance units.
  • [F3]One-for-One
  • [F4]Not Applicable
  • [F5]The Restricted Stock Unit will vest a cumulative vesting percentage equal to 33% on March 4, 2027, 66% on March 4, 2028 and 100% on March 4, 2029.
Signature
/s/ Philip E. Bauer, Attorney-in-Fact for Russell A. Flugel|2026-03-11

Documents

1 file
  • 4
    wk-form4_1773259732.xmlPrimary

    FORM 4