About Lonestar Medicines
Lonestar Medicines is a private company based in Boston, Massachusetts, incorporated in 2025 in Delaware. It has reported $25,000,000 raised in one offering on Form D since February 2026. Its chief executive is Stephen Thomas.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Jan 12, 2026 | Feb 23, 2026 | $25,000,000of $45.0M target | 4 | $6.2M | EquityRule 506(b) | Form D ↗ |
First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.
Leadership Team
Executive officers and directors listed on Lonestar Medicines's Form D filed Feb 23, 2026.
ND
Naveen Daryani
Executive officer
Also CEO and director at Memento Medicines and an executive officer at Navigator Medicines.
AL
WB
William Bonificio
Executive officer and promoter
Also an executive officer and promoter at Memento Medicines and Navigator Medicines.
GL
Gianna Hoffman-Luca
Director
ST
Stephen Thomas
Chief Executive Officer and director
Also an executive officer and promoter at Memento Medicines and a co-founder and CEO, sera medicine, director at Navigator Medicines.