About Treeline Biosciences
Treeline Biosciences is a private company based in Watertown, Massachusetts, incorporated in 2021 in Delaware. It has reported $1,094,815,863 raised in four offerings on Form D since April 2021.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Aug 21, 2025 | Sep 4, 2025 | $200,099,964of $249.9M target | 22 | $9.0M | Equity, OptionsRule 506(b) | Form D ↗ |
| Oct 2, 2024 | Oct 17, 2024 | $421,779,808fully sold | 43 | $9.8M | EquityRule 506(b) | Form D ↗ |
| Sep 26, 2022 | Oct 11, 2022 | $261,266,523of $269.3M target | 44 | $5.9M | EquityRule 506(b) | Form D ↗ |
| Apr 9, 2021 | Apr 30, 2021 | $211,669,568of $220.0M target | 34 | $6.2M | EquityRule 506(b) | Form D ↗ |
| Total, four offerings | $1,094,815,863 | |||||
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 Treeline Biosciences's Form D filed Sep 4, 2025.
SE
Steven Elms
Director
KB
DB
David Bonita
Director
JB
Joshua Bilenker
Executive officer, director and promoter
JE
Jeffrey Engelman
Executive officer, director and promoter
AK
AS
Ali Satvat
Director

DS
David Schenkein
Director