FMR LLC files Amendment No. 3 to a Schedule 13G/A reporting beneficial ownership of 9.1% (29,043,388.08 shares) of Mosaic Co common stock. The filing lists sole voting power of 21,181,959.88 shares and sole dispositive power of 29,043,388.08 shares. The document is signed under a power of attorney and references an exhibit for subsidiary identification.
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Insights
FMR LLC reports a significant passive stake in Mosaic at 9.1%.
The filing states 29,043,388.08 shares beneficially owned representing 9.1% of the class and shows sole voting power of 21,181,959.88 shares. This indicates substantial dispositive control while preserving a differentiated voting footprint.
Timing anchors include the 03/31/2026 reference on the cover and signatures dated 05/05/2026. Subsequent filings or exhibits may identify the specific subsidiary holdings and any arrangements noted in Exhibit 99.
Amendment and POA disclosures align with Schedule 13G/A practice for large passive holders.
The schedule is an amendment (No. 3) and incorporates a power of attorney effective 04/13/2026 and signed on 05/05/2026. The filing also references Exhibit 99 for a 13d-1(k)(1) agreement and subsidiary identification.
Relevant compliance items to watch in follow-ups: any conversion to an active Schedule 13D, changes in voting/dispositive power, or additional exhibits that clarify control relationships.
Key Figures
Beneficial ownership:29,043,388.08 sharesPercent of class:9.1%Sole voting power:21,181,959.88 shares+3 more
Percent of class9.1%percent of Mosaic Co common stock
Sole voting power21,181,959.88 sharessole power to vote as stated on cover
Sole dispositive power29,043,388.08 sharessole power to dispose or direct disposition
Cover date03/31/2026date shown near cover data
Signature date05/05/2026signed under power of attorney on this date
Key Terms
Schedule 13G/A, Beneficial ownership, Power of Attorney, 13d-1(k)(1) agreement
4 terms
Schedule 13G/Aregulatory
"Amendment No. 3 to Schedule 13G/A reporting beneficial ownership"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
Beneficial ownershipfinancial
"Amount beneficially owned: 29043388.08 (b) Percent of class: 9.1 %"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
Power of Attorneylegal
"Duly authorized under Power of Attorney effective as of April 13, 2026"
A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.
13d-1(k)(1) agreementregulatory
"Please see Exhibit 99 for 13d-1(k) (1) agreement"
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 3)
MOSAIC CO NEW
(Name of Issuer)
COMMON STOCK
(Title of Class of Securities)
61945C103
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
61945C103
1
Names of Reporting Persons
FMR LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
21,181,959.88
6
Shared Voting Power
0.00
7
Sole Dispositive Power
29,043,388.08
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
29,043,388.08
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.1 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
61945C103
1
Names of Reporting Persons
Abigail P. Johnson
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
29,043,388.08
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
29,043,388.08
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.1 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
MOSAIC CO NEW
(b)
Address of issuer's principal executive offices:
101 EAST KENNEDY BLVD,SUITE 2500,TAMPA,FL,USA,33602
Item 2.
(a)
Name of person filing:
FMR LLC
(b)
Address or principal business office or, if none, residence:
245 Summer Street, Boston, Massachusetts 02210
(c)
Citizenship:
Not applicable
(d)
Title of class of securities:
COMMON STOCK
(e)
CUSIP No.:
61945C103
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
29043388.08
(b)
Percent of class:
9.1 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Please see the responses to Items 5 and 6 on the cover page.
(ii) Shared power to vote or to direct the vote:
0.00
(iii) Sole power to dispose or to direct the disposition of:
29043388.08
(iv) Shared power to dispose or to direct the disposition of:
0.00
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
One or more other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the COMMON STOCK of MOSAIC CO NEW. No one other person's interest in the COMMON STOCK of MOSAIC CO NEW is more than five percent of the total outstanding COMMON STOCK.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See attached Exhibit 99.
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
FMR LLC
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Date:
05/05/2026
Abigail P. Johnson
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of Abigail P. Johnson*
Date:
05/05/2026
Comments accompanying signature: *This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FMR LLC on April 29,2026, accession number: 0000315066-26-000738.
FMR LLC reports beneficial ownership of 29,043,388.08 shares, equal to 9.1% of Mosaic Co common stock. The filing appears as Amendment No. 3 to a Schedule 13G/A and cites voting and dispositive power figures.
How much voting power does FMR LLC hold in MOS?
The filing lists sole voting power of 21,181,959.88 shares. It separately reports sole dispositive power for 29,043,388.08 shares, reflecting control over disposition of those shares.
What dates are relevant in the FMR LLC Schedule 13G/A for MOS?
The cover references 03/31/2026 and signatures are dated 05/05/2026. A power of attorney cited is effective 04/13/2026, and Exhibit 99 is referenced for related agreements.
Does the filing indicate any other person holds over 5% on behalf of FMR?
The filing states other persons may have rights to dividends or sale proceeds, but no single other person's interest exceeds 5% of Mosaic common stock, per the Schedule 13G/A language.
Where can I find details about subsidiaries or agreements referenced?
The schedule references Exhibit 99 for a 13d-1(k)(1) agreement and indicates an exhibit for subsidiary identification. Those attachments would provide the subsidiary and agreement details.
