---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-025266"
form_type: "8-K"
ticker: "ANRO"
cik: "0001999480"
company_name: "Alto Neuroscience, Inc."
filed_at: "2024-02-06T23:59:59+00:00"
generated_at: "2026-06-06T08:37:39.682457+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Alto Neuroscience files amended charter and bylaws effective upon IPO closing on Feb 6, 2024

## Summary
- Amended and restated certificate of incorporation filed with Delaware Secretary of State on Feb 6, 2024.
- Amended and restated bylaws adopted effective Feb 6, 2024, in connection with IPO closing.
- Both documents previously approved by board and stockholders; no changes to fiscal year.

## SEC filing metadata
- accession: 0001193125-24-025266
- form_type: 8-K
- ticker: ANRO
- cik: 0001999480
- company_name: Alto Neuroscience, Inc.
- filed_at: 2024-02-06T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1999480/000119312524025266/0001193125-24-025266-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1999480/000119312524025266/d736911d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-025266
- JSON: https://secwatch.observer/filing/0001193125-24-025266.json
- Plain text: https://secwatch.observer/filing/0001193125-24-025266.txt

## Key facts
- Governance Changes
  Alto Neuroscience, Inc.: Adopted amended and restated bylaws in connection with the closing of the IPO (effective 2024-02-06).
  - Change: bylaw amendment
  - Effective: 2024-02-06
  source text: Effective as of February 6, 2024, the Company adopted amended and restated bylaws (the “Restated Bylaws”) in connection with the closing of the IPO. The Board and stockholders previously approved the Restated Bylaws to be effective immediately prior to the closing of the IPO.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1999480/000119312524025266/0001193125-24-025266-index.htm
- Governance Changes
  Alto Neuroscience, Inc.: Amended and restated certificate of incorporation in connection with the closing of the IPO (effective 2024-02-06).
  - Change: charter amendment
  - Effective: 2024-02-06
  source text: the Company filed an amended and restated certificate of incorporation (the “Restated Certificate”) with the Secretary of State of the State of Delaware. The Company’s board of directors (the “Board”) and stockholders previously approved the Restated Certificate to be effective as of immediately prior to the closing of the IPO.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1999480/000119312524025266/0001193125-24-025266-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.