Blumberg Capital
About Blumberg Capital
David J. Blumberg founded the firm in 1991 and serves as its founder and managing partner. Crunchbase lists San Francisco as the location and an employee count of 11 to 50. Managing Director Yodfat Harel Buchris has described the firm's approach to picking AI startups in Israel, the U.S. and Europe. The firm says it was among the first investors in Braze, DoubleVerify, Nutanix and HootSuite. Fund IV closed with $206 million against a $200 million target, and Fund V raised $225 million in 2021, bringing total capital raised past $750 million, according to Wikipedia. Fund VI is listed as in market with an open date of May 2026, but its size is not public.
The firm invests in B2B software companies that use AI and data-driven technology across enterprise software, fintech, data analytics, supply chain, healthtech and cybersecurity. Its Managing Director has said that most companies the firm evaluates are AI-focused. Fund V was set up to back founders using AI, big data and other transformative technologies. Portfolio examples include VerAI and Angle Health from Fund V, Field Materials, an AI software company for construction material purchasing, and AiStrike, which took a $7 million seed round in January 2026 through the Lounge deals desk.
Capboard lists Seed and Series A as the firm's stages, with checks of $500,000 to $5 million. Wikipedia describes initial investments in the same range, with additional reserves set aside for follow-on funding. A separate directory lists Series B and Series C as stages, but the firm does not publish that detail itself.
- AiStrike: AI company; Seed round of $7 million, January 2026, per the Lounge deals desk
- Lira AI: business productivity software; PitchBook records a deal dated December 31, 2025
- Field Materials: AI software for construction material purchasing; round not disclosed
- Passage AI: listed among the firm's portfolio companies and named among its most notable investments by Tracxn
- Snorkel AI: listed among the firm's portfolio companies; PitchBook records a later-stage VC deal
- VerAI: named among Fund V portfolio companies (2021 fund)
- blumbergcapital.com/team/david-blumberg
- crunchbase.com/organization/blumberg-capital
- en.wikipedia.org/wiki/Blumberg_Capital
- calcalistech.com/ctech/articles/0,7340,L-3917971,00.html
- calcalistech.com/ctechnews/article/8ib2y1254
- blumbergcapital.com/news-insights/blumberg-capital-beats-200m-target-f
- privateequityinternational.com/institution-profiles/blumberg-capital.h
- capboard.io/en/investor/blumberg-capital
Investing activity
Blumberg Capital has made 276 investments according to Crunchbase across 150 portfolio companies, and has led 75 rounds and seen 59 exits, 7 of them by IPO.
Blumberg Capital appears in 1 AI deal tracked by the AI Lounge deals desk, and led 1 of them. The rounds are mostly Seed, with a median round size of $7M. The most recent is AiStrike (Seed, $7M, Jan 2026).
Blumberg Capital most often invests alongside Oregon Venture Fund and Runtime Ventures, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Blumberg Capital
Who founded Blumberg Capital and when?
David J. Blumberg founded Blumberg Capital in 1991. He is the firm's founder and managing partner.
What funds has Blumberg Capital raised?
Fund IV closed at $206 million, and Fund V raised $225 million in 2021. Fund VI is listed as in market with an open date of May 2026, and its size is not public.
What check size does Blumberg Capital write?
Public directories and Wikipedia put initial checks at $500,000 to $5 million, with reserves for follow-on rounds. The firm's own figures are not published.
Does Blumberg Capital invest in AI startups?
Yes. Its Managing Director has said most companies the firm evaluates are AI-focused, and Fund V was built around AI and big data.
Which AI companies has Blumberg Capital backed?
Public listings name AiStrike, Field Materials, Lira AI, Passage AI, Snorkel AI and VerAI among its AI-related investments.
What AI companies has Blumberg Capital invested in?
Blumberg Capital's AI investments include AiStrike. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Blumberg Capital based?
Blumberg Capital is based in San Francisco, California, United States.
What stage does Blumberg Capital invest at?
In the rounds tracked on AI Lounge, Blumberg Capital has invested at Seed, with a median round of $7M. Blumberg Capital led 1 of those rounds.
Who does Blumberg Capital co-invest with?
Blumberg Capital's most frequent co-investors on AI Lounge are Oregon Venture Fund (1 deal) and Runtime Ventures (1 deal).
How can founders reach Blumberg Capital?
Founders on AI Lounge can see Blumberg Capital's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add Blumberg Capital to their Investor Pipeline to track the conversation.