Lemma has raised $2.3M in pre-seed funding, with backing from Matrix, Y Combinator, and a roster of other investors including Liquid 2 Ventures and Cervin Ventures.
The company is an adtech platform focused on out-of-home (OOH) advertising, aiming to tie physical billboards and digital screens into broader programmatic campaigns across CTV, mobile, and web. With the fresh capital, Lemma is looking to expand its footprint in North America and EMEA, building on its existing global presence in programmatic digital out-of-home.








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