---
schema_version: "secwatch.filing_event.v1"
accession: "0001326190-26-000027"
form_type: "8-K"
ticker: "ALT"
cik: "0001326190"
company_name: "Altimmune, Inc."
filed_at: "2026-04-16T23:59:59+00:00"
generated_at: "2026-05-15T05:43:32.973710+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Altimmune shareholders approve doubling authorized shares to 400M, re-elect all directors

## Summary
- Authorized common stock increased from 200M to 400M via certificate of amendment, approved by 63.7M for vs. 24.2M against.
- All 9 director nominees elected; broker non-votes of 35.9M on each. Highest votes for Jerome Durso at 47.6M.
- Ratification of Ernst & Young as auditor passed with 85.0M for, 1.8M against, 1.5M abstain.
- Say-on-pay advisory vote passed with 39.9M for, 12.0M against, 0.5M abstain.
- Amendment to 2019 ESPP approved to increase reserve from 403,500 to 1,108,827 shares.

## SEC filing metadata
- accession: 0001326190-26-000027
- form_type: 8-K
- ticker: ALT
- cik: 0001326190
- company_name: Altimmune, Inc.
- filed_at: 2026-04-16T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.03, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1326190/000132619026000027/0001326190-26-000027-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1326190/000132619026000027/alt-20260416x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001326190-26-000027
- JSON: https://secwatch.observer/filing/0001326190-26-000027.json
- Plain text: https://secwatch.observer/filing/0001326190-26-000027.txt

## Source-grounded claims
- claim_id: 80318b686fd9419f513be37d0bbffcdd5d269e3d
  claim: Altimmune, Inc.: Amended certificate of incorporation to increase authorized common stock from 200,000,000 to 400,000,000 shares (effective 2026-04-16).
  evidence_excerpt: On April 16, 2026, Altimmune, Inc. (the “Company”) amended its Amended and Restated Certificate of Incorporation (the “Certificate of Incorporation”) by filing a Certificate of Amendment with the Secretary of State of Delaware. The Certificate of Amendment reflected an amendment to increase the number of authorized shares of common stock from 200,000,000 to 400,000,000
  evidence_url: https://www.sec.gov/Archives/edgar/data/1326190/000132619026000027/0001326190-26-000027-index.htm

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