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Luna Diabetes

Founded 2020 · 19 employees on LinkedIn · 6 known investors

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Luna develops a small patch pump with automated insulin dosing for insulin pen users to help manage glucose levels overnight. The device uses a closed-loop algorithm to adjust insulin doses automatically while users sleep.

Digital HealthHealthtechMedical Devices

Founders & leadership

Luna Diabetes was founded in 2020 by John Sjölund, Sean Saint, and Jon Brilliant.

JSJohn Sjölund
John SjölundFounderJohn Sjölund is founder and CEO of Luna Diabetes, which develops an automated insulin patch pump for overnight glucose management. Previously, he co-founded Timesulin, which was acquired by Bigfoot Biomedical in 2017, and led the Bigfoot Unity product team before its acquisition by Abbott Diabetes Care in 2023.
SS
Sean SaintFounderSean Saint is an engineer and former R&D Director at a diabetes medical device company who was diagnosed with Type I diabetes in 2011. He founded Luna Diabetes to develop automated insulin delivery devices for diabetes management.
JB
Jon BrilliantFounder

Investors · 6

Winklevoss Capital✓ confirmed by Luna DiabetesNew York · $100K – $5M

How we know: the company's own site · drugdeliverybusiness.com · the VCSheet dataset · Not right? Tell us

Interlock Capitallisted by Interlock CapitalSan Diego · $25K – $50K
Vensana CapitalreportedMinneapolis

How we know: a partner's Signal profile · funding news · drugdeliverybusiness.com · the VCSheet dataset · Not right? Tell us

Also in the syndicate · 2

Ascensia Diabetes CareSwiss Diabetes Venture Fund

Funding

SEC filings, press & company announcements

$23.6M disclosed across 1 round · 2025

Source: company announcements and press reports — follow each round's link for the claim.

Founder mafia

2 people who came through Luna Diabetes went on to found or lead other companies.

John SjolundFounderFounded Timesulin +1Sean SaintFounderFounded Beta Bionics, Inc

Related companies · 4

DiabetesA nonprofit organization that provides educational resources and information about prediabetes, including prevention strategies and lifestyle management for Americans at risk of developing type 2 diabetes.
DexComDexcom develops continuous glucose monitoring (CGM) systems and glucose biosensors, including the Dexcom G7 and the over-the-counter Stelo biosensor, that send real-time glucose readings to a phone or receiver. Its products serve people managing diabetes as well as consumers tracking glucose for general health, diet, and exercise.
Rf SurgicalMedtronic is a healthcare technology company that develops medical devices and technologies — including pacemakers, robotic-assisted surgery systems, and AI-driven health tools — used by doctors, scientists, and engineers to treat pain and disease. It works with clinicians to create solutions aimed at treating conditions such as AFib.
Tandem Diabetes Care, Inc.Tandem Diabetes manufactures infusion sets—tubing systems with subcutaneous delivery sites—designed for use with insulin pumps to manage diabetes. The product line includes several models (AutoSoft XC, AutoSoft 30, VariSoft, TruSteel) with varying insertion angles and tubing lengths.

Companies working in the same space as Luna Diabetes.

In the news

Luna Diabetes Raises $23.6M in Series A Financingfinsmes.com · Aug 2025

Frequently asked questions

What does Luna Diabetes do?
Luna develops a small patch pump with automated insulin dosing for insulin pen users to help manage glucose levels overnight. The device uses a closed-loop algorithm to adjust insulin doses automatically while users sleep.
Who founded Luna Diabetes?
Luna Diabetes was founded by John Sjölund, Sean Saint, Jon Brilliant in 2020.
Who are Luna Diabetes's investors?
Luna Diabetes's investors include Serpentine Ventures, Winklevoss Capital, Interlock Capital, Vensana Capital.
How much funding has Luna Diabetes raised?
Luna Diabetes has disclosed $23.6M raised across 1 round.