---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-204146"
form_type: "8-K"
ticker: "ALSN"
cik: "0001411207"
company_name: "Allison Transmission Holdings Inc"
filed_at: "2026-05-04T23:59:59+00:00"
generated_at: "2026-05-14T23:51:56.556022+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Allison Q1 revenue jumps 84% to $1.41B; adj. EPS $2.57 up 6%; reaffirms FY guidance

## Summary
- Net sales rose 84% to $1.406B, driven by Allison Off-Highway acquisition closing Jan 1, 2026.
- Adjusted diluted EPS $2.57, up 6% YoY; GAAP diluted EPS $1.33 due to $76M one-time inventory step-up and integration costs.
- Adjusted EBITDA $362M (+22% YoY); margin 26%.
- Allison Transmission segment sales $733M (-4% YoY); Off-Highway contributed $673M in net sales.
- Full-year 2026 guidance reaffirmed: net sales $5.575-$5.925B, adj. EBITDA $1.365-$1.515B.

## SEC filing metadata
- accession: 0001193125-26-204146
- form_type: 8-K
- ticker: ALSN
- cik: 0001411207
- company_name: Allison Transmission Holdings Inc
- filed_at: 2026-05-04T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1411207/000119312526204146/0001193125-26-204146-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1411207/000119312526204146/d138525d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-204146
- JSON: https://secwatch.observer/filing/0001193125-26-204146.json
- Plain text: https://secwatch.observer/filing/0001193125-26-204146.txt

## Key facts
- Earnings Releases
  Allison Transmission Holdings Inc reported for the three months ended March 31, 2026 results: revenue $1,406 million, net income $112 million, EPS Diluted EPS of $1.33, Adjusted Diluted EPS of $2.57.
  - Period: for the three months ended March 31, 2026
  - Revenue: $1,406 million
  - Net income: $112 million
  - EPS: Diluted EPS of $1.33, Adjusted Diluted EPS of $2.57
  - Result: reported results
  source text: set forth by specific reference in such filing. --- EX-99.1 (EX-99.1) --- EX-99.1 Exhibit 99.1 News Release Allison Announces First Quarter 2026 Results * Net Sales of $1,406 million, up 84% year over year, including the addition of the Allison Off-Highway business unit acquired on January 1, 2026 * Net Income of $112 million, 8% of Net Sales * Diluted EPS of
  evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312526204146/0001193125-26-204146-index.htm

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