# Altair Engineering revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Company: [Altair Engineering](/companies/altair-engineering.md)

## Recorded posture

- First recorded event: 2026-06-27
- Last material change: 2026-06-27
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2026-06-27**: verification_state_change on `reviewStatus` `unreviewed` -> `reviewed` (source: https://www.altair.com/) (verified)

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date. To restate a recorded change, write a new event through the updateEntityField chokepoint.

_Canonical URL: /companies/altair-engineering/history. REST: /v1/companies/e3987217-de48-415a-bdca-d0b57b09f131/history. HTML: [/companies/altair-engineering/history](/companies/altair-engineering/history)._