UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 10)*

AGCO CORPORATION

(Name of Issuer)

Common Stock

(Title of Class of Securities)

001084102

(CUSIP Number)

Scott F. Smith, Esq.

Covington & Burling LLP

The New York Times Building

620 Eighth Avenue

New York, New York 10018

(212) 841-1056

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

April 24, 2019

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box  ☐.

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Section 240.13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 001084102

CUSIP No. 001084102

CUSIP No. 001084102

The Schedule 13D originally filed with the Securities and Exchange Commission (the “SEC”) with respect to the Issuer on April 9, 2013, as amended by Amendment Nos. 1 through 9 (the “Schedule 13D”), is hereby further amended and supplemented to include the information set forth herein. This amended Statement on Schedule 13D/A constitutes Amendment No. 10 to the Schedule 13D. Capitalized terms used but not defined herein have the meanings given to such terms in the Schedule 13D.

Item 1. Security and Issuer

This Schedule 13D relates to shares of the common stock (the “Common Stock”) of AGCO Corporation (the “Issuer”), the principal executive offices of which are located at 4205 River Green Parkway, Duluth, Georgia 30096.

Item 3. Source and Amount of Funds or Other Consideration

Except for the 15,067 shares that Ms. Srinivasan (together with the Companies (as defined below), the “Reporting Persons”) holds directly and that were awarded to her under the AGCO Corporation 2006 Long-Term Stock Incentive Plan for her services as a director of the Issuer, the source of the funds used by the Reporting Persons to purchase the reported shares, pursuant to the Purchase Plans, was the working capital of Tractors and Farm Equipment Limited (“TAFE”) or of TAFE Motors and Tractors Limited (“TAFE Motors and Tractors” and, together with TAFE, the “Companies”). The Reporting Persons paid a total of $585,802,249.73 (exclusive of brokers’ commissions and other administrative costs) to purchase the reported shares. Ms. Srinivasan did not pay for the shares that were awarded to her under the AGCO Corporation 2006 Long-Term Stock Incentive Plan.

Item 4. Purpose of Transaction

The Reporting Persons acquired the Common Stock for investment purposes. The Reporting Persons will routinely monitor a wide variety of investment considerations, including, without limitation, current and anticipated future trading prices for the Common Stock, the Issuer’s operations, assets, prospects, and business development, the Issuer’s management, Issuer-related competitive and strategic matters and general economic, financial market and industry conditions, as well as other investment considerations. The Reporting Persons may acquire additional Common Stock in the future in the public markets, in privately negotiated transactions or otherwise and may determine to sell, trade or otherwise dispose of all or some holdings in the Issuer in the public markets, in privately negotiated transactions or otherwise, or take any other lawful action they deem to be in their best interests.

Except as discussed above, the Reporting Persons have no present plans or proposals which relate to or would result in any of the matters referred to in Items 4(a) through 4(j) of Schedule 13D; however, the Reporting Persons reserve the right to change their plans at any time, as they deem appropriate, in light of the foregoing considerations, discussions and other factors.

On August 29, 2014, the Reporting Persons and the Issuer entered into a Letter Agreement, regarding certain governance matters and certain matters relating to the current and future ownership by the Reporting Persons of the Common Stock, which was amended on April 24, 2019 (as amended, the “Letter Agreement”).

See Item 6 for a description of the Letter Agreement.

Item 5. Interest in Securities of the Issuer

(a) The aggregate percentage of shares reported owned on this Schedule 13D is based on 76,512,465 shares of Common Stock outstanding as of February 22, 2019, which is the total number of shares of Common Stock outstanding as reported in the Issuer’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018, filed with the SEC on March 1, 2019. As of the close of business on April 24, 2019, (i) TAFE beneficially owned 12,150,152 shares of Common Stock, which constituted approximately 15.9% of the Common Stock outstanding; (ii) TAFE Motors and Tractors beneficially owned 3,263,321 shares of Common Stock, which constituted approximately 4.3% of the Common Stock outstanding; and (iii) Ms. Srinivasan beneficially owned 12,165,219 shares of Common Stock, which constituted approximately 15.9% of the Common Stock outstanding, including the 15,067 shares she holds in her individual capacity. Ms. Srinivasan disclaims beneficial ownership of the Common Stock beneficially owned by each of the Companies, and this report shall not be deemed an admission that Ms. Srinivasan is a beneficial owner of such shares for the purposes of Section 13(d) or 13(g) of the Securities Exchange Act of 1934 or for any other purpose. Each of the Companies disclaims beneficial ownership of the 15,067 shares of Common Stock owned directly by Ms. Srinivasan in her individual capacity, and this report shall not be deemed an admission that either of the Companies is a beneficial owner of such shares for the purposes of Section 13(d) or 13(g) of the Securities

Exchange Act of 1934 or for any other purpose. TAFE Motors and Tractors disclaims beneficial ownership of the 8,886,831 shares of Common Stock purchased on behalf of TAFE under the Purchase Plans, and this report shall not be deemed an admission that TAFE Motors and Tractors is a beneficial owner of such shares for the purposes of Section 13(d) or 13(g) of the Securities Exchange Act of 1934 or for any other purpose.

(b) For each person listed, the following table indicates the number of shares of Common Stock as to which there is sole power to vote or to direct the vote, shared power to vote or to direct the vote, sole power to dispose or to direct the disposition and shared power to dispose or to direct the disposition:

(c) See Annex A hereto.

(d) Not applicable.

(e) Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

On April 24, 2019, TAFE and the Issuer amended the letter agreement dated August 29, 2014 regarding certain governance matters and certain matters relating to the current and future ownership by TAFE of the Common Stock. Pursuant to the Letter Agreement, TAFE agreed not to purchase or acquire beneficial ownership of, and to cause its affiliates, including Amalgamations Private Limited, TAFE Motors and Tractors Limited and Mallika Srinivasan (collectively, the “TAFE Parties”), not to purchase or acquire beneficial ownership of additional shares of Common Stock if as a result of such purchase or acquisition TAFE and the TAFE Parties collectively would own 12,150,153 or more shares of Common Stock (the “TAFE Cap”), provided that TAFE may purchase all of the Common Stock pursuant to an offer permitted under certain provisions of the Letter Agreement. For purposes of TAFE and the TAFE Parties’ ownership, shares of Common Stock beneficially owned by Mallika Srinivasan for service as a director shall not be included. If the Issuer issues additional shares of Common Stock, the TAFE Cap will be increased by 15.9% of the amount of shares issued. Under certain circumstances, if the Issuer repurchases shares issued either as consideration in an acquisition or as part of a board of directors-approved plan to finance an acquisition, the TAFE Cap will be reduced, however the TAFE Cap will never be less than the greater of (x) initial TAFE Cap and (y) 15.9% of the then outstanding shares of Common Stock.

Pursuant to the Letter Agreement, TAFE has also agreed not to (i) subject to its rights to make a non-public offer to acquire all or a part of the Issuer or propose another similar strategic transaction that would result in a change of control of the Issuer, form or act as part of a group with respect to the ownership or voting of Common Stock or to otherwise grant a third-party a proxy or other voting rights with respect to the Common Stock owned by TAFE or any TAFE Party (other than to or at the request of the Issuer), provided that TAFE and the TAFE Parties are expressly permitted to act as a group, or (ii) publicly announce its intention to commence, or commence, an offer to acquire all or part of the Common Stock.

TAFE is permitted under the Letter Agreement to make a non-public offer to the Chairman of the Issuer and the Issuer’s Board of Directors (the “Board”) to acquire all or a part of the Issuer or propose another similar strategic transaction that would result in a change of control of the Issuer. TAFE is permitted to include in such an offer providers of debt and equity financing under certain conditions, including, but not limited to, a requirement that no equity provider has during the time of the offer beneficial ownership of more than 5% of Common Stock and is not a competitor or activist hedge fund or acting in that capacity, and any equity provider will be required to enter into a confidentiality agreement and other agreements consistent with agreements required by the Issuer for other potential bidders for the Issuer.

The Letter Agreement requires the Issuer to promptly inform TAFE of (x) any offer to acquire all or substantially all of the Issuer, or other similar strategic transaction that would result in a change of control of the Issuer, submitted to the Board for formal consideration or which the Board has requested management to evaluate before consideration, and (y) any commencement of a review of strategic alternatives which includes a possible sale of all or substantially all of the Issuer, and permit TAFE the opportunity to make a private offer to acquire all or substantially all of the Issuer, or other similar strategic transaction that would result in a change of control of the Issuer, subject to the right of the Board to control any process for all

potential acquirers to the extent it is advised it is required to do so to comply with its fiduciary duties. In the event that the Board decides to sell the global businesses of Massey Ferguson and/ or Fendt, or receives an offer to acquire the global business of Massey Ferguson and/or Fendt submitted to the Board for formal consideration or for which the Board has requested management to evaluate before consideration, TAFE shall be afforded an opportunity to make an offer to purchase the global businesses of Massey Ferguson and/ or Fendt.

Pursuant to the Letter Agreement, the restrictions on TAFE and the TAFE Parties described above, and the agreement described below to vote any shares held in excess of 20% , will be released and of no further effect upon the first to occur of the following: (i) the Issuer publicly announces a process to review strategic alternatives which includes a possible sale of all or substantially all of the Issuer, (ii) any person commences a public tender offer by filing a Schedule TO (or any successor form) to acquire the Issuer and such public tender offer represents a bona fide intent to acquire the Issuer which is not subject to a financing condition, (iii) any person publicly announces its intention to commence a public tender offer or otherwise makes a public offer to acquire all or substantially all of the Issuer and either of the following occur: (x) the Issuer does not recommend against such offer within the time frame contained in Rule 14d-9 or (y) the Issuer does recommend against such offer within the time frame contained in Rule 14d-9 and subsequently such person publicly announces a bona fide offer higher by more than an immaterial amount or any other person announces its intention to commence a public tender offer or otherwise makes a public offer, to acquire all or substantially all of the Issuer within 6 months of the original public offer, (iv) any person enters into, an acquisition agreement with the Issuer, or the Issuer enters into, or announces its intention to enter into, an agreement providing for the acquisition of all or substantially all of the Issuer, (v) any person (other than a professional institutional investor) acquires 10% or more of the outstanding Common Stock and the Issuer has not within 30 days either (A) entered into a standstill on customary terms, or (B) adopted a stockholder rights plan that restricts such holder’s ability to acquire additional shares above the shareholding level that the person has achieved and makes provision for TAFE’s acquisition of shares up to the TAFE Cap provided in such case, however, that the restrictions with respect to the prohibition on acquisition of Common Stock above the TAFE Cap by TAFE and the TAFE Parties shall only be released if such person has acquired or is permitted to acquire more than 12.5% of the outstanding Common Stock, (vi) the beneficial ownership of Common Stock collectively by TAFE and the TAFE Parties falls below 5% of the then outstanding Common Stock, (vii) the Issuer breaches the terms of the Letter Agreement described below that relate to the nomination of a candidate proposed by TAFE for election to the Board or otherwise forces the TAFE director to resign from the Board and (viii) the fifth anniversary of the Letter Agreement. Pursuant to the Letter Agreement, if the TAFE Parties own in excess of 20% of the outstanding Common Stock, the TAFE Parties agree to vote any shares held in excess of such percentage in accordance with the recommendation of the Board.

Pursuant to the Letter Agreement, TAFE also agreed not to dispose of Common Stock to a direct competitor or an activist hedge fund and if it disposes of any Common Stock (other than to a TAFE Party), it will do so in a public distribution or in a private sale, and in the case of a private sale, not more than 5% to any person or “group” (as group is defined in the Securities Exchange Act of 1934, as amended).

Pursuant to the Letter Agreement, the Issuer has agreed to provide customary assistance to TAFE in selling its shares, including filing a registration statement with the U.S. Securities and Exchange Commission, cooperating with underwriters, providing auditor comfort letters, participating in road shows and similar activities, if TAFE determines to dispose of any shares of Common Stock in a public distribution.

Pursuant to the Letter Agreement, the Issuer has agreed to nominate a candidate proposed by TAFE for election to the Board at each annual meeting, as long as the collective beneficial ownership by TAFE and the TAFE Parties of Common Stock is 5% or more of the then outstanding Common Stock. If such a nominee is not the Chairman or Chief Executive Officer of TAFE, the Board has reasonable rights of approval over the nominee. If the collective beneficial ownership by TAFE and the TAFE Parties of Common Stock falls below 5% of the then outstanding Common Stock (other than as a result of a sale of Common Stock by TAFE or a TAFE Party), the Issuer has agreed to continue to nominate the candidate proposed by TAFE, provided that the ownership of the Common Stock by TAFE returns to 5% or more by the first anniversary of the date it fell below 5%.

The Letter Agreement will terminate on the fifth anniversary of its signing.

Any description of the Letter Agreement included herein is qualified in its entirety by reference to Exhibit D.

The Issuer holds a 23.75% interest in TAFE. TAFE supplies tractors and components to the Issuer for sale in certain markets.

Item 7. Material to Be Filed as Exhibits

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.

Date: April 24, 2019

Annex A

Transactions by TAFE during the last 60 days: None.

Transactions by TAFE Motors and Tractors during the last 60 days: None.

Transactions by Ms. Srinivasan in her individual capacity during the last 60 days: None.