LetterOne

LetterOne is a private international investment business headquartered in Luxembourg that deploys long-term capital across energy, technology, retail, and healthcare. Rather than being a biotech or pharmaceutical operating company itself, it acts as an active owner and investor through sector-focused business units including L1 Health. In healthcare, its portfolio has included platforms in pharmaceutical manufacturing, consumer health, animal health, and life sciences financing, such as Remedica, Sun Wave Group, Destination Pet, and K2 HealthVentures. The broader group describes itself as a long-term, hands-on investor with evergreen capital and substantial assets under management. For a biotech analyst, LetterOne is best understood as a diversified investment holding company with healthcare exposure, not a therapeutic drug developer.