SCHEDULE 13D/A 0002025889 XXXXXXXX LIVE 15 Common Shares, par value $1.50 per share 08/26/2025 false 0001499505 L00849106 ADECOAGRO S.A.

28, Boulevard F.W. Raiffeisen Luxembourg N4 L-2411

Tether Holdings, S.A. de C.V. 4420 4621 1793 Final Av. La Revolucion, Edif. Centro Corporativo Presidente Plaza Nivel 12 San Salvador H3 00000 Daniel Woodard (212) 547-5400 McDermott Will & Schulte LLP One Vanderbilt Avenue New York NY 10017 0002025889 N Tether Holdings, S.A. de C.V. OO Y H3 0.00 74751482.00 0.00 74751482.00 74751482.00 N 74.7 CO Note in relation to Items 8, 10 and 11: Includes 74,751,482 common shares, par value $1.50 per share ("Common Shares") of Adecoagro S.A. held by Tether Investments, S.A. de C.V., a controlled subsidiary of Tether Holdings, S.A. de C.V. Note in relation to Item 13: This percentage is calculated based upon 100,069,440 Common Shares outstanding as of the close of business on June 30, 2025, as reported in the Issuer's Form 6-K filed with the Securities and Exchange Commission on August 18, 2025. 0002049832 N Tether Investments, S.A. de C.V. WC N H3 0.00 74751482.00 0.00 74751482.00 74751482.00 N 74.7 CO Note in relation to Item 13: This percentage is calculated based upon 100,069,440 Common Shares outstanding as of the close of business on June 30, 2025, as reported in the Issuer's Form 6-K filed with the Securities and Exchange Commission on August 18, 2025. 0002050373 N Giancarlo Devasini OO N L6 0.00 74751482.00 0.00 74751482.00 74751482.00 N 74.7 IN Note in relation to Items 8, 10 and 11: Includes 74,751,482 Common Shares held by Tether Investments, S.A. de C.V., a controlled subsidiary of Tether Holdings, S.A. de C.V. Mr. Devasini has a greater than 50% voting interest in Tether Holdings, S.A. de C.V. The reporting person disclaims beneficial ownership of these shares except to the extent of the reporting person's pecuniary interest. Note in relation to Item 13: This percentage is calculated based upon 100,069,440 Common Shares outstanding as of the close of business on June 30, 2025, as reported in the Issuer's Form 6-K filed with the Securities and Exchange Commission on August 18, 2025. Common Shares, par value $1.50 per share ADECOAGRO S.A. 28, Boulevard F.W. Raiffeisen Luxembourg N4 L-2411 This statement on Schedule 13D amends the Schedule 13D of Tether Holdings Limited, a British Virgin Islands business company, Tether Investments Limited, a British Virgin Islands business company, Ludovicus Jan Van der Velde and Giancarlo Devasini that was originally filed with the Securities and Exchange Commission (the "SEC") on August 16, 2024, as amended by Amendment No. 1 filed on September 9, 2024, Amendment No. 2 filed on September 20, 2024, Amendment No. 3 filed on September 30, 2024, Amendment No. 4 filed on October 18, 2024, Amendment No. 5 filed on November 5, 2024, Amendment No. 6 filed on November 18, 2024, Amendment No. 7 filed on February 18, 2025, Amendment No. 8 filed on February 25, 2025, Amendment No. 9 filed on March 17, 2025, Amendment No. 10 filed on March 28, 2025, Amendment No. 11 filed on April 29, 2025, Amendment No. 12 filed on June 6, 2025, Amendment No. 13 filed on July 10, 2025 and Amendment No. 14 filed on August 18, 2025 (as amended, the "Schedule 13D") with respect to the Common Shares, par value $1.50 per share ("Common Shares") of Adecoagro S.A., a societe anonyme under the laws of the Grand Duchy of Luxembourg (the "Issuer"). This amendment to the Schedule 13D is being filed by Tether Holdings, S.A. de C.V. (f/k/a Tether Holdings Limited), an El Salvador entity, Tether Investments, S.A. de C.V. (f/k/a Tether Investments Limited), an El Salvador entity ("Tether Investments"), and Giancarlo Devasini (collectively, the "Reporting Persons") and constitutes Amendment No. 15 to the Schedule 13D. Capitalized terms used but not defined herein have the meanings given to such terms in the Schedule 13D. Except as set forth herein, the Schedule 13D is unmodified. The Reporting Persons beneficially own an aggregate of 74,751,482 Common Shares, representing 74.7% of the outstanding Common Shares. Each of the Reporting Persons has voting and dispositive power with respect to the beneficially owned 74,751,482 Common Shares. Schedule B sets forth the transactions in the Common Shares effected by the Reporting Persons during the past 60 days. None. Not applicable. Schedule B - Open Market Purchases Tether Holdings, S.A. de C.V. /s/ Giancarlo Devasini 08/28/2025 Tether Investments, S.A. de C.V. /s/ Giancarlo Devasini 08/28/2025 Giancarlo Devasini /s/ Giancarlo Devasini 08/28/2025