Luna Diabetes
Founded 2020 · 19 employees on LinkedIn · 6 known investors
Find your way into Luna Diabetes
83 people in our graph share verified history with the Luna Diabetes team — schools, employers, funds. One of them is your warm intro.
Travis Bryantunlockedknows Sean Saint · together at California Polytechnic State University-San Luis Obispo (overlapped)
knows the team · via California Polytechnic State University-San Luis Obispo
×3knows the team · via UC San Diego
×5knows the team · via Jönköping University
knows the team · via Luna Diabetes
knows the team · via Luna Health
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.
Founders & leadership
Luna Diabetes was founded in 2020 by John Sjölund, Sean Saint, and Jon Brilliant.
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John SjölundinFounderJohn 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.
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Sean SaintinFounderSean 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
Serpentine Ventures✓ verifiedZurich
Winklevoss Capital✓ verifiedNew York · $100K – $5M
Interlock CapitalSan Diego · $25K – $50K
Vensana Capitalreported · 3 sourcesMinneapolis
Also in the syndicate · 2
Ascensia Diabetes CareSwiss Diabetes Venture Fund
Funding
SEC filings, press & company announcements$23.6M disclosed across 1 round · 2025
- $23.6MSeries AAug 2025 · 4 sources
Vensana Capital (lead), Ascensia Diabetes Care, Swiss Diabetes Venture Fund, Winklevoss Capital
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Competitors · 4
by search overlap
Diabetes30 shared keywordsA 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.
DexCom16 shared keywordsDexcom 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 Surgical14 shared keywordsMedtronic 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.12 shared keywordsTandem 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 competing with Luna Diabetes for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
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.