[Form 3] Alto Neuroscience Inc. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Alto Neuroscience, Inc. (ANRO) Form 3 filed on behalf of Ramiro Sanchez reports an initial Section 16 filing disclosing that the reporting person does not beneficially own any securities of the issuer as of the event date 08/12/2025. The form identifies the reporting person as a Director and was signed by an attorney‑in‑fact on 08/14/2025. No non‑derivative or derivative holdings are listed on the schedules.

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^*

Sanchez Ramiro

(Last) (First) (Middle)

C/O ALTO NEUROSCIENCE, INC.

650 CASTRO STREET, SUITE 450

(Street)

MOUNTAIN VIEW CA 94041

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
08/12/2025

3. Issuer Name and Ticker or Trading Symbol
Alto Neuroscience, Inc. [ ANRO ]

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

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

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

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)

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

Explanation of Responses:

Remarks:

No securities beneficially owned.

No securities are beneficially owned.

	/s/ Erin R. McQuade, Attorney-in-Fact	08/14/2025
	** 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.

FAQ

What did the ANRO Form 3 filed for Ramiro Sanchez disclose?

The Form 3 discloses that Ramiro Sanchez, identified as a Director, beneficially owns no securities of Alto Neuroscience as of 08/12/2025.

Does the filing list any stock options or derivative securities for ANRO?

No. The filing contains no entries in Table I or Table II and explicitly states no securities beneficially owned.

Who signed the Form 3 for ANRO and when?

The form was signed by /s/ Erin R. McQuade, Attorney-in-Fact on 08/14/2025.

What is the reporting person's relationship to Alto Neuroscience in this filing?

The filing marks the reporting person as a Director of Alto Neuroscience, Inc. (ANRO), with no other relationships checked.

Is there any indication this Form 3 is an amendment?

No. The form does not provide a date of an original filing and is presented as the initial Form 3.