---
schema_version: "secwatch.filing_event.v1"
accession: "0000950103-24-010880"
form_type: "8-K"
ticker: "ALGM"
cik: "0000866291"
company_name: "ALLEGRO MICROSYSTEMS, INC."
filed_at: "2024-07-26T23:59:59+00:00"
generated_at: "2026-05-31T16:06:06.349740+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Allegro MicroSystems sells 28.75M shares at $23.16 per share in underwritten offering

## Summary
- Offering comprised 25M firm shares plus 3.75M option shares; option exercised in full prior to July 26 close.
- Gross proceeds approximately $666M; offering made under existing shelf registration (File No. 333-280960).
- Underwriters led by Barclays Capital Inc. and Morgan Stanley & Co. LLC as representatives.
- Use of proceeds not specified in the filing; underwriting agreement filed as Exhibit 1.1.
- Customary representations, warranties, indemnification, and contribution terms included.

## SEC filing metadata
- accession: 0000950103-24-010880
- form_type: 8-K
- ticker: ALGM
- cik: 0000866291
- company_name: ALLEGRO MICROSYSTEMS, INC.
- filed_at: 2024-07-26T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/866291/000095010324010880/0000950103-24-010880-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/866291/000095010324010880/dp215340_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950103-24-010880
- JSON: https://secwatch.observer/filing/0000950103-24-010880.json
- Plain text: https://secwatch.observer/filing/0000950103-24-010880.txt

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