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Company records / phasefour.io

Phase Four

Phase Four (phasefour.io): 3 changes recorded in its website history since August 2015.

The homepage shows no content without JavaScript, so the latest live check could not read it. Last tried 6 November 2026.

Recorded changes

Newest observations first. Each interval bounds when the website changed; it is not an exact event date.

  1. New logosBetween and

    Added logos to its homepage: ae-industrial-partners, veterens and industrious-ventures.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  2. HeadlineBetween and
    BeforeIn-Space Mobility
    AfterChanging the Way We Move in Space

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  3. HiringBetween and

    Added a careers page.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation

First recorded website

Observed 10 August 2015

Our earliest capture with readable facts. This is our first observation, not when the company introduced these things. These website claims are not independently verified.

Phase Four is building a high performance, high delta-V small satellite proulsion system.

archived pageLink to first observation

All facts above belong to this capture. Unlisted fields mean we have no readable observation, not that they were absent.

How it describes itself

Similar headlines are grouped together. The quote shown is from the last capture in each group, not necessarily the exact wording throughout that period.

  1. July 2022 – January 2025 · 3 captures · latest observed messagingChanging the Way We Move in Space

    This wording observed 10 January 2025.

    archived page
    Inspect 3 captures in this group

Cite this record

StartupHistory, “Phase Four” company record, https://startuphistory.org/c/phasefour.io

Machine-readable: /c/phasefour.io.json. How changes are found: method.