Walter F. Precourt was named Chief Administrative Officer of Mosaic Co, effective November 1, 2023. As of November 6, 2026, Mosaic Co has reported one leadership change filing to the SEC under Item 5.02 of Form 8-K, on September 25, 2026, naming 2 appointments and 2 departures (Form 8-K, September 25, 2026).
MOSAIC CO named a new Executive Vice President on Sep 25. 30 companies changed executives this week.
Companies that just changed executives, and the new executive. Before you unlock: the company, the change and what is inside. After: the executive named with their role, how to reach the company, and a person's email only when we found one.
| John Hancock Comvest Private Income Fund | named a new Chief Financial Officer | |
| Bain Capital Specialty Finance, Inc. | named a new Director | |
| Azora Therapeutics, Inc. (DE) | named a new Director | |
| LASE Corp. | named a new Director | |
| Century Communities, Inc. | named a new Executive Chairman |
Sell to companies like Mosaic Co? Enter your website and see 10 with a filed reason to buy from you this month. Free.
Opens in a new tab. No signup.
Key facts
- · In / out: Out · Person: Karen A. Swager · 8-K, 2026-09-25
- · In / out: Out · Person: Karen A. Swager · Role: Executive Vice President · Effective: 2026-12-01 · 8-K, 2026-09-25
- · In / out: In · Person: Walter F. Precourt · Role: Executive Vice President · Effective: 2026-12-01 · 8-K, 2026-09-25
- · In / out: In · Person: Walter F. Precourt · Role: Chief Administrative Officer · Effective: 2023-11-01 · 8-K, 2026-09-25
Mosaic Co reported a change among its directors and officers to the SEC on Form 8-K, Item 5.02, on 2026-09-25. It names 2 people, with 2 appointments and 2 departures. Every row below is cited to the filing it comes from, and this page adds each new change as Mosaic Co files it.
Also on the record for Mosaic Co
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 12, 2026 | Stake report, Schedule 13G, by AQR Capital Management, LLC | 5.76% of the class | 5%+ stakes | Source |
| August 6, 2026 | Stake report, Schedule 13G/A, by FMR LLC | 4.2% of the class | 5%+ stakes | Source |
| May 6, 2026 | Stake report, Schedule 13G/A, by FMR LLC | 9.1% of the class | 5%+ stakes | Source |
| April 30, 2026 | Stake report, Schedule 13G, by Vanguard Capital Management | 7.37% of the class | 5%+ stakes | Source |
| March 27, 2026 | Stake report, Schedule 13G/A, by The Vanguard Group | — | 5%+ stakes | Source |
| February 5, 2026 | Stake report, Schedule 13G/A, by FMR LLC | 12.6% of the class | 5%+ stakes | Source |
| September 8, 2025 | Stake report, Schedule 13G/A, by FMR LLC | 11.1% of the class | 5%+ stakes | Source |
| August 14, 2025 | Stake report, Schedule 13G/A, by T. Rowe Price Associates, Inc. | 0.7% of the class | 5%+ stakes | Source |
| August 6, 2025 | Stake report, Schedule 13G, by FMR LLC | 6.6% of the class | 5%+ stakes | Source |
Selling to them or working with them? See who runs Mosaic Co now and the warning signs.
Free to see. No signup.
Keep reading
More on Mosaic Co and the records around it.
Mosaic Co elsewhere on the record
Companies that share a holder
- AQR Capital Management, LLC also filed stake reports on 190 other companies: Bold Eagle Acquisition Corp. (Nov 2026), Centurion Acquisition Corp. (Aug 2026), FG Merger II Corp. n/k/a BOXABL Inc. (Aug 2026)
- T. Rowe Price Associates, Inc. also filed stake reports on 191 other companies: PACIFIC BIOSCIENCES OF CALIF (Nov 2026), APARTMENT INVT & MGMT CO -A (Oct 2026), BETA BIONICS INC (Oct 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
Watch Mosaic Co
Get an email when Mosaic Co files again: a new raise, a leadership change, a layoff or an IPO filing. One email first to confirm; nothing else until you click it. At most one a day, one click to stop. Free for up to 3 companies.
Want the whole picture on Mosaic Co?
Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
A Full Report on Mosaic Co: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on Mosaic Co covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
11 cited sources found
Plus the sections for what you are deciding, which you pick after ordering.
A real finished report, first screen. Opens in a new tab.
Not ready to order yet? Keep this snapshot.
Sends this preview to you once; we won't add you to any list
Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-09-25 | Out | 8-K, 2026-09-25 | |||
| 2026-09-25 | Out | Executive Vice President | 2026-12-01 | 8-K, 2026-09-25 | |
| 2026-09-25 | In | Executive Vice President | 2026-12-01 | 8-K, 2026-09-25 | |
| 2026-09-25 | In | Chief Administrative Officer | 2023-11-01 | 8-K, 2026-09-25 |
Who leads Mosaic Co, as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Executive Vice President: Karen A. Swager, departure reported, effective 2026-12-01 (filed 2026-09-25). No successor is named in these filings.
- Chief Administrative Officer: Walter F. Precourt, appointed, effective 2023-11-01 (filed 2026-09-25).
New leaders reset buying decisions — get the Full Report on Mosaic Co: who runs it, how the money works and what to watch, every claim linked to its source.
Get the Full ReportFind people with the same kind of experience as the Executive Vice President at Mosaic Co, with the record behind each one.
Find candidates like Executive Vice President at Mosaic CoEvery change, in the filing's words
Departing: Karen A. Swager
On September 23, 2026, Ms. Karen A. Swager informed The Mosaic Company ( Mosaic ) of her intention to retire from Mosaic.
Departing: Karen A. Swager, Executive Vice President, effective 2026-12-01
In connection with her retirement, Ms. Swager will resign as the Executive Vice President - Operations effective December 1, 2026, and will continue as a Senior Advisor to Mosaic until her retirement in the second quarter of 2027.
Appointed: Walter F. Precourt, Executive Vice President, effective 2026-12-01
On September 23, 2026, Mosaic announced that effective December 1, 2026, its Board of Directors ( Board ) appointed Mr. Walter F. Precourt, III to the position of Executive Vice President - Operations.
Appointed: Walter F. Precourt, Chief Administrative Officer, effective 2023-11-01
Mr. Precourt, age 62, was named Senior Vice President and Chief Administrative Officer effective November 1, 2023.
- - Departure of Directors or Certain Officers Election of Directors Appointment of Certain Officers Compensatory Arrangements of Certain Officers.
- Ms. Swager will continue to receive her current cash compensation and be eligible to participate in benefit plans generally available to management-level employees after her transition to Senior Advisor through her remaining period of employment with Mosaic.
- The CHR Committee also approved a one-time Restricted Stock Unit promotional equity award with a grant-date fair value of $300,000 for which Mr. Precourt will be eligible to receive 33% on the first anniversary of the grant date, 33% vesting on the second anniversary, and the remaining 34% vesting on the third anniversary.
- The CHR Committee also approved the continuation of the executive severance and change in control agreement for Mr. Precourt in the form previously approved by the CHR Committee for executive officers other than Mosaic's Chief Executive Officer.
- In this role, Mr. Precourt had responsibility for the company's Human Resources, Public Affairs, Procurement and Shared Services teams.
- Mr. Precourt has held several leadership positions since joining Mosaic in 2009, including Senior Vice President - Strategy and Growth, Senior Vice President - Phosphates, Senior Vice President - Potash Operations, and leading the Environment, Health and Safety organization.
Tools for this story
Each opens in a new tab, filled in for Mosaic Co. With no account yet, you sign up free and land on the result.
Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.