---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-007383"
form_type: "8-K"
ticker: "ANRO"
cik: "0001999480"
company_name: "Alto Neuroscience, Inc."
filed_at: "2025-01-16T23:59:59+00:00"
generated_at: "2026-05-28T00:25:12.485864+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Alto Neuroscience expands credit facility to $75M, extends maturity to 2029

## Summary
- Maturity extended from Dec 2026 to Jan 2029; max facility raised from $35M to $75M.
- $20M funded at closing; up to $30M tranche contingent on milestones, $25M tranche subject to lender approval.
- Interest: Prime +1.45% (floor 8.45%) plus 1% PIK; cash runway covenant begins Jan 2026.
- Loan conversion feature: up to $9M convertible at $10.49 (first $4M) and $4.8259 (next $5M).
- Warrants repriced to $3.7122; new warrant issued for additional shares expiring Jan 2035.

## SEC filing metadata
- accession: 0001193125-25-007383
- form_type: 8-K
- ticker: ANRO
- cik: 0001999480
- company_name: Alto Neuroscience, Inc.
- filed_at: 2025-01-16T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1999480/000119312525007383/0001193125-25-007383-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1999480/000119312525007383/d891653d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-007383
- JSON: https://secwatch.observer/filing/0001193125-25-007383.json
- Plain text: https://secwatch.observer/filing/0001193125-25-007383.txt

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