Lionheart Ventures is a San Francisco-based venture capital firm founded in 2019 by a group of former entrepreneurs. The firm emphasizes ethical investment practices and aims to mitigate civilizational risks through its investments. They primarily focus on two key sectors: artificial intelligence and frontier mental health technologies. Their investment strategy targets the responsible development of transformative technologies that enhance human flourishing and address significant global challenges, particularly the mental health crisis. They seek to invest in exceptional, ethical founders who are committed to creating significant societal impacts while generating attractive returns. The firm typically invests in early-stage companies with check sizes ranging from $100,000 to $5 million, with a sweet spot of $1.5 million. Notable portfolio companies include Anthropic, Calm, and Charm Industrial.