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Mainframe
Mainframe is an AI-powered productivity tools startup, co-founded by Figma and Cash App veteran Jordan Singer, that recently secured a $5.5M seed round. The company focuses on seamless, beautiful design for its AI tools, as reported by Intelligence360. The LLC's principal address is in Redwood City, CA, consistent with a Bay Area tech startup.
Filed August 6, 2026 · Redwood City, CA
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See how it worksAbout Mainframe
Mainframe is a ai productivity tools business (Corp) registered on August 6, 2026 with the California Division of Corporations. The business is located in Redwood City, California 94065.
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Filing Details
Entity NameMainframe AI, Inc.
Entity TypeCorp
Entity NumberB20260358333
Filing DateAugust 6, 2026
Principal AddressLocked
City / State / ZipRedwood City, CA 94065
TimezonePacific (PT)
EIN on FileNo
Registered AgentUNITED STATES CORPORATION AGENTS, INC.
Verified Business Profile
SubcategoryAI-powered design and productivity software
Contact Information
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Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Website PlatformLocked
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Document Timeline
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Frequently Asked Questions
When was Mainframe registered?
Mainframe was registered as Corp on August 6, 2026 in California.
Where is Mainframe located?
Mainframe is based in Redwood City, CA, 94065.
What type of business is Mainframe?
Mainframe is classified as a ai productivity tools business (ai-powered design and productivity software).
Does Mainframe have an EIN on file?
No EIN was found on file for Mainframe at the time of registration.
Who Sells to This Business
Based on the business category, these service providers typically target this type of business.
InsuranceWeb DesignerAccounting
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