David Braginsky
About David Braginsky
Little about David Braginsky's professional background is confirmed in public sources. Lounge could not verify a personal website, an X account or a LinkedIn profile that clearly belongs to him.
A Crunchbase person profile for a David Braginsky in Palo Alto lists a software engineering role at Asana since 2011 and a CTO and board role at PricePoint from 2012. It also lists a BS in computer science from UCLA and an MS in computer science (AI) from Stanford. Crunchbase does not state that this is the same person as the Mason AI investor, so treat these details as unconfirmed. Several other people named Braginsky appear in investor databases, and none of them should be confused with him.
The Lounge deals desk records one AI round for David Braginsky: the Mason AI seed round, $4.3M, March 2026. Crunchbase also lists him as an investor in the Seed Round of Mason AI.
Mason AI is a San Francisco company, legally Planweave AI, Inc. Crunchbase describes it as an AI-powered platform for automating building reviews. The company's own announcement says the $4.3M seed was oversubscribed and led by the Urban Innovation Fund. Crunchbase counts 7 investors in the round. Public sources do not say how much David Braginsky invested.
The only confirmed investment is a seed-stage AI company working on construction and permitting software. One deal is not enough to define a thesis. Public sources do not give any statement from him about what he looks for, a typical check size, or preferred geographies. Founders should ask him directly.
- Mason AI: AI platform that automates building plan review. He took part in its $4.3M seed round, led by the Urban Innovation Fund, in March 2026.
Investing activity
David Braginsky appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $4M. The most recent is Mason AI (Seed, $4.3M, Mar 2026).
David Braginsky most often invests alongside Urban Innovation Fund, Adam Cohen, Brian McClendon and Zachary Rosen, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about David Braginsky
Who is David Braginsky?
He is an angel investor who appears as an investor in the Mason AI seed round on Crunchbase and on the Lounge deals desk. Beyond that, public information about his background is limited and not clearly attributed to him.
What AI companies has David Braginsky invested in?
The one AI investment confirmed publicly is Mason AI, which raised a $4.3M seed round in March 2026. Mason AI builds software to automate building plan review.
What is David Braginsky's typical check size?
It is not public. No source found states his check size or how much he put into Mason AI.
What stage does David Braginsky invest in?
His only confirmed AI deal is a seed round. There is no public statement of a stage preference, so one deal should not be read as a rule.
Does David Braginsky have a public LinkedIn, X account or website?
Lounge could not confirm any of these as belonging to him. Several unrelated people share his name, so founders should verify identity before reaching out.
Who led the round David Braginsky joined in Mason AI?
The Urban Innovation Fund led the $4.3M seed round, according to Mason AI's announcement. Angels, including David Braginsky per Crunchbase, took part alongside it.
Is David Braginsky an angel investor?
Yes. David Braginsky invests personally as an angel.
What stage does David Braginsky invest at?
In the rounds tracked on Lounge, David Braginsky has invested at Seed, with a median round of $4M.
Who does David Braginsky co-invest with?
David Braginsky's most frequent co-investors on Lounge are Urban Innovation Fund (1 deal), Adam Cohen (1 deal), Brian McClendon (1 deal), Zachary Rosen (1 deal) and Steve Bartel (1 deal).
How can founders reach David Braginsky?
Founders on Lounge can see David Braginsky's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add David Braginsky to their Investor Pipeline to track the conversation.