Paul Longhenry
About Paul Longhenry
Paul Longhenry is based in San Francisco, California. He is the Co-Founder and CEO of Mariana, which Crunchbase describes as the developer of an AI-driven suite of B2B applications. Mariana is in stealth mode, and Crunchbase lists his start there as February 2023.
Before Mariana he worked as an operator and as an investor. He started as an entrepreneur at Sonim Technologies, a mobile VoIP software and services provider, where he was VP of Business Development. He then did early-stage mobile investing at 3i Venture Capital and was a Principal at D.E. Shaw Ventures, focused on the mobile sector. He has said the financial crisis of 2008 and 2009 hit the D.E. Shaw venture effort, because its sole limited partner had no capital to put into new deals.
He joined Tapjoy, a mobile app monetization and advertising platform, in April 2011 and left in February 2019. His last title there was SVP of Strategy, Business and Corporate Development. He was CEO of Pinpoint Predictive from March 2019 to August 2020. From May 2021 to June 2022 he was VP of Strategy and Corporate Development at Bolt. His education is a BS in Finance and Economics from the University of Southern California (1997), according to PitchBook.
Crunchbase counts 3 personal investments and 3 portfolio companies for Paul Longhenry, with no lead investments and no exits. PitchBook classifies him as an individual angel investor, and its profile shows one recorded investment, in Credit Sesame in April 2010.
Crunchbase also lists him as Angel Investor and Advisor at Credit Sesame from May 2010. His other recorded angel rounds are two seed rounds: Blotout, in a round Crunchbase dates to November 2021, and Grain, which Crunchbase reports raising from Beyond Capital and Paul Longhenry in June 2022. Crunchbase and PitchBook do not publish check sizes for these rounds.
He is listed as an advisor to Great North Ventures. PitchBook describes the role as Fund I Advisor. Crunchbase also lists him as a board member of Asetek since September 2008, and shows a Series B in Asetek led by D. E. Shaw & Co., his former employer. That was a firm investment, not a personal angel check.
His clearest AI investing role is at TheFounderVC. Crunchbase lists him as a Venture Partner there from 2025, and the directory Everything Startups describes him as a San Francisco-based partner. The fund was founded in 2024 and is described as a pre-seed and seed fund investing only in early-stage vertical AI companies in the United States.
His own AI company, Mariana, is building AI-driven B2B applications. No public source names AI-specific angel investments by Paul Longhenry personally, and the descriptions of Grain and Blotout available here do not say whether they are AI companies, so this page does not classify them as AI investments.
His recorded personal investments are early-stage: two are seed rounds. The fund he works with, TheFounderVC, targets pre-seed and seed rounds in vertical AI in the United States. His background is in mobile, advertising technology, marketing technology, corporate development and B2B software.
He has not published a check size, an ownership target or a list of what he looks for in a founder. He has said he values a compelling product vision and a big-picture strategic mindset, but that was about his work as an operator, not a statement of investment criteria. Founders should treat his focus as inferred from his role and record, not as a stated thesis. His Crunchbase profile does not publicly show his investor type or stage.
- Grain: seed round reported by Crunchbase in June 2022, alongside Beyond Capital. Public sources here do not describe the company.
- Blotout: seed round that Crunchbase dates to November 2021. Public sources here do not describe the company.
- Credit Sesame: financial services company. PitchBook records his investment in April 2010 and Crunchbase lists him as angel investor and advisor from May 2010.
- Mariana: AI-driven B2B application suite, in stealth. He is co-founder and CEO, so this is a company he founded, not an investment.
Investing activity
Paul Longhenry has made 3 investments according to Crunchbase across 3 portfolio companies, and has founded 1 company.
Deals
Frequently asked questions about Paul Longhenry
Who is Paul Longhenry?
Paul Longhenry is a San Francisco angel investor and the Co-Founder and CEO of Mariana, a stealth AI B2B software company. He previously held strategy and corporate development roles at Tapjoy and Bolt, was CEO of Pinpoint Predictive, and worked at D.E. Shaw Ventures and 3i Venture Capital.
What stage does Paul Longhenry invest in?
His recorded personal investments include two seed rounds, Blotout and Grain. TheFounderVC, where he is a venture partner, focuses on pre-seed and seed companies.
What is Paul Longhenry's check size?
Check sizes are not public. Crunchbase and PitchBook do not list amounts for his angel investments.
Does Paul Longhenry invest in AI startups?
He is a venture partner at TheFounderVC, which invests exclusively in early-stage vertical AI companies in the United States. He also runs the AI company Mariana. Public sources do not show which AI startups he has backed personally.
What companies has Paul Longhenry invested in?
Crunchbase lists Grain and Blotout as seed investments, and records him as an angel investor and advisor at Credit Sesame. PitchBook dates his Credit Sesame investment to April 2010.
How can founders contact Paul Longhenry?
He has a public LinkedIn profile at linkedin.com/in/paullonghenry. He is also listed as a venture partner at TheFounderVC, which is another route to reach him. He has no public X account or personal site that this page could confirm.
Is Paul Longhenry an angel investor?
Yes. Paul Longhenry invests personally as an angel. Crunchbase counts 3 investments.
Where is Paul Longhenry based?
Paul Longhenry is based in San Francisco, California, United States.
How can founders reach Paul Longhenry?
Founders on Lounge can see Paul Longhenry'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 Paul Longhenry to their Investor Pipeline to track the conversation.