When was Ghost Tree Partners founded?

Ghost Tree Partners was founded in 2021.

Where is Ghost Tree Partners' headquarters located?

Ghost Tree Partners' headquarters is located in Irvine (United States).

How big is Ghost Tree Partners' investment team?

Ghost Tree Partners has a team of 4, including 3 partners.

How many companies has Ghost Tree Partners invested in?

Ghost Tree Partners has invested in 5 companies, including EMBR labs & Anonos.

Which companies has Ghost Tree Partners invested in lately?

Position Imaging & EMBR labs are the latest investments by Ghost Tree Partners.

What sectors does Ghost Tree Partners focus on for investments?

Top sectors in Ghost Tree Partners' portfolio are HealthTech (2 investments) and Enterprise Applications (3 investments).

How many exits has Ghost Tree Partners been involved in?

Ghost Tree Partners' portfolio has seen 1 acquisition.

Ghost Tree Partners - 2026 Investor Profile, Portfolio, Team & Investment Trends

1. EMBR labs

Provider of a wearable device for monitoring body temperature. The device offers cooling and warming sensations through a wristband. It utilizes thermal waves to stimulate temperature sensitive nerves. The device is designed to provide relief for thermal discomfort. The related mobile application allows users to personalize the experience. The device is worn on the wrist, which is an area of blood flow, and cools or warms the body at a rate of about 0.4 degrees Celsius per second. The prototype consists of a copper alloy based heat sink and a system to control thermal impulses.

Key facts about EMBR labs

Founded Year: 2014
Location: Boston (United States)
Stage: Series B
Total Funding till date: $15M
Employee Count: 18 as on Aug 31, 2026
Investors: Bose Ventures, Aon and 14 Others
Latest Funding Round: Series B, Oct 16, 2024, $*****
Highlight: Editors' Pick

2. Anonos

Provider of cloud data security solutions. It is a data security platform that enables enterprises to leverage high-fidelity data products with accuracy, while ensuring compliance with data protection regulations. The company provides a data security solution that eliminates the tradeoff between data protection and utility, that allows organizations to create value from the data while preserving privacy and security.

Key facts about Anonos

Founded Year: 2012
Location: New York City (United States)
Stage: Series B
Total Funding till date: $70M
Employee Count: 24 as on Aug 31, 2026
Investors: Aon, Edison Partners and 1 Other
Latest Funding Round: Conventional Debt, Oct 19, 2022, $*****
Highlight: Editors' Pick

3. Blue Spark Technologies

Blue Spark Technologies develops flexible, printed, “green,” proprietary power source solutions for battery-powered printed electronic systems. The company was founded as Thin Battery Technologies in 2002 with patented technology and technical leadership from Energizer (Eveready Battery Company). Blue Spark customers include manufacturers, product designers, and integrators across multiple industries including: interactive packaging, RFID, pharmaceutical, powered smart cards, and novelty items.

Key facts about Blue Spark Technologies

Founded Year: 2003
Location: Westlake (United States)
Stage: Acquired
Total Funding till date: $80.5M
Employee Count: 31 as on Aug 31, 2026
Investors: Aon, Early Stage Partners and 3 Others
Latest Funding Round: Series D, Nov 28, 2023, $*****
Highlight: Acquired

4. Position Imaging

3DWIFI provides an indoor positioning technology. It claims that its wireless tracking technology in indoor space is highly accurate. It enables the user to create a virtual 3D interactive space and helps with indoor navigation.

Key facts about Position Imaging

Founded Year: 2006
Location: Portsmouth (United States)
Stage: Series B
Total Funding till date: $26.1M
Employee Count: 58 as on Aug 31, 2026
Investors: Rationalwave and Ghost Tree Partners
Latest Funding Round: Venture Debt, Oct 19, 2023, $*****
Highlight: Editors' Pick

5. Job.com

Online job board platform for the multi industry. It allows employers to search and connect with candidates for job vacancies using smart contracts on the blockchain technology. Candidates need to register themselves on the platform and upload their resumes in order to apply for jobs. The offering sectors include engineering, finance, healthcare, etc.

Key facts about Job.com

Founded Year: 2001
Location: Austin (United States)
Stage: Seed
Employee Count: 209 as on Aug 31, 2026
Investors: Falcon Capital, Alpha Sigma Capital and 4 Others
Latest Funding Round: Seed, Nov 29, 2022, $*****
Highlight: Editors' Pick

Ghost Tree Partners has invested in 5 companies over the last 4 years, with an average of 0 new investment annually in the last 3 years. Its most recent first time investment was in Position Imaging.

View all investments by Ghost Tree Partners

Ghost Tree Partners has made 2 investments in Conventional Debt stage with an average round size of $42.5M, 1 investment in Seed stage, 1 investment in Series D stage with an average round size of $40M and 1 investment in Venture Debt stage with an average round size of $30M.

Here are Ghost Tree Partners' investments by stage:

Stage of entry	No. of Investments
Conventional Debt	2
Seed	1
Series D	1
Venture Debt	1

Note: We have considered here, only first round of investments

View all investments by Ghost Tree Partners

Ghost Tree Partners has a diverse portfolio, with companies operating in the Enterprise Applications, HealthTech, Enterprise Infrastructure, High Tech and Semiconductors. Notably, it has invested in 5 Tech companies, 4 Enterprise (B2B) companies, 2 Consumer (B2C) companies and at least 2 companies focusing on Software.

Here are Ghost Tree Partners' investments by sector:

Sector	No. of Investments
Enterprise Applications	3
HealthTech	2
Enterprise Infrastructure	1
High Tech	1
Semiconductors	1

Note: We have considered here, only first round of investments

View all investments by Ghost Tree Partners

Ghost Tree Partners has made most investments in United States (5).

View all investments by Ghost Tree Partners

Ghost Tree Partners has not made any investment in 2026 so far.

Here are the most recent investments by Ghost Tree Partners:

Filter this list

Date	Company	Location	Round Details	Round Amount	Co-Investors
Oct 19, 2023	Position Imaging	United States	Venture Debt	8330	-
May 03, 2023	EMBR labs	United States	Conventional Debt	5592	Aon
Nov 29, 2022	Job.com	United States	Seed	7661	Serengeti Asset Management
Oct 19, 2022	Anonos	United States	Conventional Debt	6456	Aon
Apr 18, 2022	Blue Spark Technologies	United States	Series D	3962	Aon

See more recent investments made by Ghost Tree Partners

1 company from Ghost Tree Partners' portfolio has been acquired. The most recent acquisition was Blue Spark Technologies.

Here are Ghost Tree Partners' portfolio companies that got acquired most recently:

Filter this list

Company	Acquisition Date	First Invested on	First Round of Investment	Round Size
Blue Spark Technologies	Mar 28, 2025	Apr 18, 2022	Series D	1279

View all acquired companies in Ghost Tree Partners' portfolio

Ghost Tree Partners has a team of 4 members including 3 Partners.

Here is a list of all team members in Ghost Tree Partners:

Name	Designation	Location	Contact Details
Jeff Willardson	Partner	-	1 Email
Scott Warner	Partner	-	1 Email
Mark Fox	Partner	-	1 Email

View team details of Ghost Tree Partners

Over the past 4 years, 13 investors have co-invested in Ghost Tree Partners's portfolio companies. This includes only funds.

Invested before Ghost Tree Partners: Intel Capital, DigiTx Partners and 9 others have invested in rounds before Ghost Tree Partners. There is 1 company where Intel Capital has invested before Ghost Tree Partners and 1 company where DigiTx Partners has invested before Ghost Tree Partners.
Top Co-investors of Ghost Tree Partners: 2 investors entered a company along with Ghost Tree Partners. These include investors like Aon (3 companies).