Left Lane Capital
About Left Lane Capital
Harley Miller founded Left Lane Capital in 2019 after nine years at Insight Partners, where he started in 2010 investing in high-growth internet companies. Public profiles list Dan Ahrens, Vinny Pujji and Matthew Miller as managing partners alongside him. The firm is based in Brooklyn, New York, and has an office in London. A Wikipedia profile reports about US$3.8 billion in assets under management as of March 31, 2026.
The firm describes its focus as internet and consumer technology, and third-party profiles say it uses AI to build fuller solutions for the businesses it backs, alongside digitizing offline experiences and extending digital-first brands into physical retail. Recent AI rounds on the Lounge deals desk include a $23M Brellium venture round in October 2026, a Rising Tide seed round with undisclosed terms in September 2026, and a $15M Rork seed round in April 2026. The firm led each of these rounds.
Lounge lists the firm for Series A, Series B and Series C+ investing, and its deals include a seed round for Rork. The firm's check sizes are not public in the sources reviewed, so none are listed here.
- Brellium: $23M venture round (October 2026), led by Left Lane Capital
- Rising Tide: seed round, amount undisclosed (September 2026), led by Left Lane Capital
- Rork: $15M seed round (April 2026), led by Left Lane Capital
Investing activity
Left Lane Capital appears in 3 AI deals tracked by the AI Lounge deals desk, rounds totalling $38M, and led 3 of them. The rounds are mostly Seed and Growth, with a median round size of $23M. The most recent are Brellium (Venture round, $23M, Oct 2026), Rising Tide (Seed, Sep 2026) and Rork (Seed, $15M, Apr 2026).
Left Lane Capital most often invests alongside First Round Capital, Digital Health Venture Partners, Goodwater Capital and Karman Ventures, and the companies it backs on AI Lounge are mostly in AI and Healthcare AI, compliance and revenue integrity.
Deals
Frequently asked questions about Left Lane Capital
When was Left Lane Capital founded?
Left Lane Capital was founded in 2019 by Harley Miller, who previously spent nine years investing at Insight Partners.
Where is Left Lane Capital located?
The firm is headquartered in Brooklyn, New York, with an office in London. Lounge lists its base as New York, US.
Which AI companies has Left Lane Capital led rounds in?
Lounge records led rounds in Brellium, a $23M venture round in October 2026, Rising Tide, a seed round in September 2026 with undisclosed terms, and Rork, a $15M seed round in April 2026.
What stages does Left Lane Capital invest in?
Lounge tags the firm for Series A, Series B and Series C+ rounds, and its Rork investment was a seed round.
Does Left Lane Capital publish its check sizes?
Check sizes are not public in the sources reviewed, so founders should ask the firm directly through its website before pitching.
What AI companies has Left Lane Capital invested in?
Left Lane Capital's AI investments include Brellium, Rising Tide and Rork. The 3 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Left Lane Capital based?
Left Lane Capital is based in New York, US.
What stage does Left Lane Capital invest at?
In the rounds tracked on AI Lounge, Left Lane Capital has invested at Seed and Growth, with a median round of $23M. Left Lane Capital led 3 of those rounds.
Who does Left Lane Capital co-invest with?
Left Lane Capital's most frequent co-investors on AI Lounge are First Round Capital (1 deal), Digital Health Venture Partners (1 deal), Goodwater Capital (1 deal), Karman Ventures (1 deal) and True Ventures (1 deal).
How can founders reach Left Lane Capital?
Founders on AI Lounge can see Left Lane 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 Left Lane Capital to their Investor Pipeline to track the conversation.