# Signal AI funding: rounds and investors > Signal AI has raised $215M across 2 rounds since 2021. Investors include MMC Ventures, Highland Europe and Battery Ventures. Every round with its source. Source: https://millionrounds.com/company/signal-ai (Millionrounds; every figure on the page links to its filing or article) United Kingdom · [Series D startup](https://millionrounds.com/companies) # Who invested in *Signal AI* 2 rounds we have observed, with the 7 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. AI Funding summary Updated 26 Oct 2026 **$215M** raised across 2 rounds since 2021, from 2 sources - **Latest round:** Series D, $50M Dec 2021 - **Biggest round:** $165M Growth - **Investors:** 7 (1 led) See who backed them [**Signal AI** AI 1 / 16 Their pitch deck **Signal AI's pitch deck, 16 slides** Each slide read for what it argues, against the decks that raised at the same stage.](https://millionrounds.com/decks/signal-ai) ## The rounds - **Dec 2021** Series D **$50M** [LocalGlobe](https://millionrounds.com/fund/localglobe) [MMC Ventures](https://millionrounds.com/fund/mmc-ventures) [Frontline Ventures](https://millionrounds.com/fund/frontline-ventures) [Highland Europe](https://millionrounds.com/fund/highland-europe) Source recorded - **Date not reported** Growth **$165M** [Battery Ventures](https://millionrounds.com/fund/battery-ventures) Lead [MMC Ventures](https://millionrounds.com/fund/mmc-ventures) [Highland Europe](https://millionrounds.com/fund/highland-europe) [Mercuri VC](https://millionrounds.com/fund/mercuri) [Volution](https://millionrounds.com/fund/volution) Reported by Firms' own news pages ## Founders and team From Signal AI's own website: 1 founder, 3 on the team. **David Benigson** CEO & Founder - **Karlie Santucci** Chief Customer Officer - **Stephen Lucas** Chief Operating Officer - **Thor Mitchell** Chief Product & Technology Officer ## Everyone who backed them [MMC Ventures](https://millionrounds.com/fund/mmc-ventures) VC firm **2** rounds [Highland Europe](https://millionrounds.com/fund/highland-europe) VC firm **2** rounds [Battery Ventures](https://millionrounds.com/fund/battery-ventures) VC firm **1** round, led 1 [LocalGlobe](https://millionrounds.com/fund/localglobe) VC firm **1** round [Frontline Ventures](https://millionrounds.com/fund/frontline-ventures) VC firm **1** round [Mercuri VC](https://millionrounds.com/fund/mercuri) VC firm **1** round [Volution](https://millionrounds.com/fund/volution) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=signal-ai). ## Also claim to have backed them This firm lists Signal AI as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above. [VentureFounders](https://millionrounds.com/fund/venturefounders) VC firm Per its own site ## Quick answers about Signal AI ### Who invested in Signal AI? Signal AI's investors include MMC Ventures, Highland Europe, Battery Ventures, LocalGlobe and Frontline Ventures, and 2 more on record. ### How much has Signal AI raised? Signal AI has raised $215M across 2 rounds since 2021. ### When did Signal AI last raise? Signal AI's most recent round was a Series D of $50M in Dec 2021. ### What was Signal AI's biggest round? Signal AI's largest round on record is $165M (Growth), led by Battery Ventures. ### Who backed Signal AI first? Signal AI's first round on record, in Dec 2021, was backed by LocalGlobe, MMC Ventures and Frontline Ventures and 1 others. ### What stage is Signal AI at? Signal AI's latest named round is a Series D, in Dec 2021. ### Where is Signal AI based? Signal AI is based in the United Kingdom. ## Companies like Signal AI In the same sector, and raised in the last eighteen months. [**Marrow** $2.0M · Oct 2026](https://millionrounds.com/company/marrow)[**Cognitive Credit** $64M · Oct 2026](https://millionrounds.com/company/cognitive-credit)[**Opply** $23M · Oct 2026](https://millionrounds.com/company/opply)[**XRlabs** $8.4M · Oct 2026](https://millionrounds.com/company/xrlabs)[**Salience Labs** $169M · Oct 2026](https://millionrounds.com/company/salience-labs)[**Affinity Labs** $3.2M · Oct 2026](https://millionrounds.com/company/affinity-labs) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app