[Form 3] Adecoagro S.A. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Adecoagro S.A. Chief Executive Officer Mariano Bosch filed an initial ownership report detailing his existing stakes in the company, rather than new trades. The filing shows 997,249 common shares held directly.

He also reports indirect holdings of 127,855 common shares through a wholly owned company and 312,640 common shares held by a trust administered by an independent trustee for the benefit of his spouse and children, for which he disclaims beneficial ownership beyond any pecuniary interest.

In addition, Bosch holds several fully vested stock option grants over common shares, including tranches covering 173,236 and 135,314 underlying shares at an exercise price of 5.8267, and 29,504, 28,038, and 112,740 underlying shares at exercise prices of 7.1086 and 8.6236, with expirations between 2034 and 2036.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

BOSCH MARIANO

(Last) (First) (Middle)

28 BOULEVARD F.W. RAIFFEISEN

(Street)

LUXEMBOURG L-2411

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Adecoagro S.A. [ AGRO ]

3a. Foreign Trading Symbol
[AGRO]

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common shares	997,249	D
Common shares	127,855	I	By wholly-owned company(1)
Common shares	312,640	I	By trust(2)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option	(3)	05/01/2034	Common shares	173,236	$5.8267	D
Stock Option	(4)	08/01/2035	Common shares	135,314	$5.8267	D
Stock Option	(5)	06/01/2036	Common shares	29,504	$7.1086	D
Stock Option	(5)	06/01/2036	Common shares	28,038	$5.8267	D
Stock Option	(6)	07/01/2036	Common shares	112,740	$8.6236	D

Explanation of Responses:

1. Represents shares held by a company wholly owned by the reporting person. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein

2. Represents shares held by a trust which is administrated by an independent trustee and is for the benefit of the reporting persons spouse and children. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

3. The stock options were granted on May 1, 2004 and have since been fully vested.

4. The stock options were granted on August 1, 2005 and have since been fully vested.

5. The stock options were granted on June 1, 2006 and have since been fully vested.

6. The stock options were granted on July 1, 2006 and have since been fully vested

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Ezequiel Torres, as attorney-in-fact	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does Mariano Bosch’s Form 3 filing for Adecoagro (AGRO) show?

The filing lists Mariano Bosch’s existing ownership in Adecoagro. It reports 997,249 common shares held directly, additional indirect holdings via a wholly owned company and a family trust, plus multiple fully vested stock options over common shares expiring between 2034 and 2036.

How many Adecoagro (AGRO) common shares does the CEO hold directly and indirectly?

Mariano Bosch directly holds 997,249 common shares of Adecoagro. He also reports 127,855 shares held through a wholly owned company and 312,640 shares held by a trust for his spouse and children, while disclaiming beneficial ownership over those indirect holdings.

What stock option positions does the Adecoagro (AGRO) CEO report on his Form 3?

The CEO reports several fully vested stock option grants over common shares. These cover blocks of 173,236, 135,314, 29,504, 28,038 and 112,740 underlying shares with exercise prices of $5.8267, $7.1086 and $8.6236, expiring between 2034 and 2036.

Are the Adecoagro (AGRO) CEO’s reported stock options fully vested?

Yes, the reported stock options are fully vested. Footnotes explain the options were granted between May 2004 and July 2006 and have since fully vested, giving Mariano Bosch the right to exercise them any time until their respective expiration dates in 2034–2036.

How are the Adecoagro (AGRO) CEO’s indirect shareholdings structured?

Indirect holdings are through a company and a trust. One block of shares is held by a wholly owned company, while another is held by a trust run by an independent trustee for his spouse and children; he disclaims beneficial ownership of these securities.