When was Openwater founded?

Openwater was founded in 2016 and raised its 1st funding round 8 years after it was founded.

Where is Openwater located?

Openwater is headquartered in San Francisco, United States.

Who is the current CEO of Openwater?

Mary Lou Jepsen of Openwater. They have also founded 1 company.

How many employees does Openwater have?

As of Mar 31, 2026, the latest employee count at Openwater is 58.

Is Openwater a funded company?

Openwater is a funded company, having raised a total of $***** in its 1st and only funding round, a Series C round on Aug 22, 2024.

When was the latest funding round of Openwater?

Openwater's latest funding was a $***** Series C round on Aug 22, 2024, with participation from 5 investors.

Where does Openwater rank among its competitors?

Openwater ranks 9th amongst 1287 active competitors, of which 289 are funded. It stands 4th in terms of total funding among its competitors. The most recent competitor to raise funding was Ultrahuman, which secured $11.3M in Nov, 2025.

Who are the top competitors of Openwater?

Openwater's top competitors include Ultrahuman, Oura and Masimo. Among them, Ultrahuman secured the most recent funding round in November, 2025.

Openwater - 2026 Company Profile, Team, Funding & Competitors

Openwater is a series C company based in San Francisco (United States), founded in 2016 by Mary Lou Jepsen. It operates as a Provider of imaging technologies for medical diagnosis and treatments. Openwater has raised $100M in funding from investors like Khosla Ventures, Plum Alley Investments and Bold Capital Partners. The company has 1287 active competitors, including 289 funded and 80 that have exited. Its top competitors include companies like Ultrahuman, Oura and Masimo.

Company Details

Provider of imaging technologies for medical diagnosis and treatments. It offers a wearable therapeutic and diagnostic headset which is capable of treating cancer, mental disease and measuring cerebral blood flow.

Website: www.openwater.health/
Social
Email ID: *****@openwater.cc

Key Metrics

Founded Year

2016

Location

San Francisco, United States

Stage

Series C

Total Funding

$100M in 1 round

Latest Funding Round

Series C, Aug 22, 2024, $*****

Investors

Khosla Ventures & 10 more

Ranked

9^th among 1287 active competitors

Employee Count

58 as on Mar 31, 2026

Similar Companies

Ultrahuman & 1424 more

View Openwater's full profile

Openwater has raised a total funding of $100M over 1 round. Its latest funding round was a Series C round on Aug 22, 2024 for $*****. 5 investors participated in its latest round. Openwater has 9 institutional investors and 2 angel investors.

Here is the list of recent funding rounds of Openwater:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Aug 22, 2024	6004901	Series C	4577545	1195279	2269727	5482886

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View details of Openwater's funding rounds and investors

The founders of Openwater is Mary Lou Jepsen. Mary Lou Jepsen is the CEO of Openwater.

Here are the details of Openwater's key team members:

Mary Lou Jepsen: Founder & CEO of Openwater and founder of 1 other company.
Contact Info: 1 email address

View details of Openwater's Founder profiles and Board Members

Openwater's employee count trend

Openwater has 58 employees as of Mar 26. Here is Openwater's employee count trend over the years:

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Top competitors of Openwater include Ultrahuman, Oura and Masimo. Here is the list of Top 10 competitors of Openwater, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Ultrahuman 2019, Bengaluru (India), Series B	Provider of wearable devices and blood analysis for health and fitness	$55.3M	Steadview, Nexus Venture Partners & 43 others	80/100
2nd	Oura 2013, Oulu (Finland), Series E	Developer of smart ring providing health metrics and personalized recommendations	$1.32B	Temasek, Elysian Park & 68 others	78/100
3rd	Masimo 1989, Irvine (United States), Acquired	Provider of wide range of devices to monitor health parameters	-	The Vertical Group, Signatures Capital & 8 others	69/100
4th	Neuralink 2016, Fremont (United States), Series E	Provider of implantable brain-computer interfaces	$1.29B	Founders Fund, Vy Capital & 29 others	67/100
5th	Empatica 2011, Milano (Italy), Series B	Developer of a wrist band to monitor physiological signals	$30.9M	RA Capital Management, Sanofi Ventures & 5 others	66/100
6th	Sibel Health 2018, Niles (United States), Series C	Developer of wireless medical monitoring devices for clinical and remote use	$71M	Steele Foundation for Hope, Gates Foundation ... & 5 others	63/100
7th	CoachCare 2013, New York City (United States), Series C	Provider of remote patient monitoring and virtual health support services	$60.2M	Topmark Partners, Catalyst Investors & 4 others	61/100
8th	Science 2021, Alameda (United States), Series C	Provider of online science magazine	$130M	Khosla Ventures, Artis Ventures & 3 others	61/100
9th	Openwater 2016, San Francisco (United States), Series C	Provider of imaging technologies for medical diagnosis and treatments	$100M	Khosla Ventures, Collab Fund & 9 others	60/100
10th	Health Hero Network 1988, London (United Kingdom), Acquired	Offers technology-based solutions for remote health monitoring and management.	$34M	Integral Capital Partners, Oracle & 7 others	60/100