Mayra Arntz is a Principal at Building Ventures, whose known portfolio counts 9 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Principal at Building Ventures, whose known portfolio counts 9 companies
- Copper
- Station A
- Skillit
- Adaptis
- Clearstory.build
- Parspec
- Faura
- SmartPM Technologies
- Joist AI
Investor Profile
Founders in the listed sectors AI, Climate, Commerce and Hardware, and focus areas AI Applications, Built Environment, Clean Tech and Clean and Renewable Energy fall inside that listing.
Building Ventures appears in Seed, Series A and Series B rounds across its known deals.
The firm portfolio and the focus above give founders context on whether Mayra Arntz matches their raise.
Colleagues at Building Ventures
Jesse Devitte
Co-Founder
Boston, United States
Heather Beardsley Widman
Partner
New York, United States
Travis Connors
Co-Founder and General Partner
Boston, United States
Allen Preger
Partner
San Francisco, United States
Matt Rightmire
General Partner
Hanover, United States
Lucas T.
Principal
United States
Frequently asked questions
Who is Mayra Arntz?
Mayra Arntz is a venture capital investor based in Austin, Texas, United States, listed as Principal at Building Ventures. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to Mayra Arntz personally.
What does Mayra Arntz invest in?
Listed sectors include AI, Climate, Commerce and Hardware; listed focus areas include AI Applications, Built Environment, Clean Tech and Clean and Renewable Energy. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Mayra Arntz invest at?
Building Ventures appears in Seed, Series A and Series B rounds across its known deals, and Mayra Arntz is listed there as Principal. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Mayra Arntz listed at?
Mayra Arntz is listed as Principal at Building Ventures. 6 other people in the database share a firm with Mayra Arntz.
How do I contact Mayra Arntz?
An email address, a phone number and a LinkedIn page are on file for Mayra Arntz. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal