# Linda Greub

> Linda Greub is a Series A investor at Avestria Ventures backing Medical. See 4 investments, check sizes, portfolio and contact details. Updated Oct 2026.

- Type: Angel Investor
- Fund: [Avestria Ventures](https://shizune.co/investors/profile/avestria-ventures)
- Location: San Francisco Bay Area, United States
- Total investments: 4
- Last investment: Aug 2023
- Lead investor: 50%
- Last updated: Oct 2026
- LinkedIn: https://www.linkedin.com/in/lindagreub/
- X (Twitter): https://www.twitter.com/LindaGreub
- Facebook: https://www.facebook.com/public/Linda-Greub

Linda Greub is a Series A investor at Avestria Ventures in San Francisco Bay Area focused on Medical and Health Care. Linda Greub is the General Partner at Avestria Ventures. She attended Harvard Business School.

## Contacts

5 contacts available for Linda Greub: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/linda-greub-25d9?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Medical | 3 | 75% |
| Health Care | 2 | 50% |
| Women's | 1 | 25% |
| Hospital | 1 | 25% |
| Education | 1 | 25% |

8 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 2 | 50% |
| Private Equity | 1 | 25% |
| Venture - Series Unknown | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Axena Health | Axena Health is a women-led company dedicated to improving the lives of women with pelvic floor disorders by leveraging the power of digital technology. | $1.8M | Private Equity | Aug 08, 2023 | https://www.levatherapy.com |
| Fogarty Institute of Innovation | The mission of the Fogarty Institute for Innovation is to promote medical innovation by providing support to promising innovators and researchers as they transform their creative ideas into practical solutions to improve patient care. They offer mentorship and education at every step of the process, coordinating access to intellectual, physical,and financial resources to propel medical concepts from initiation to application. | $5M | Series A | Nov 02, 2021 | http://fogartyinstitute.org/ |
| Raydiant Oximetry | Raydiant Oximetry is a medical device company focused on improving outcomes for mothers and babies during childbirth. The company develops a low-cost, non-invasive biomedical device to monitor the oxygen levels in fetal blood. It develops and distributes a non-invasive technology that directly monitors a babies' oxygenation during pregnancy.This technology will lead to better patient care and greatly reduce the number of unnecessary cesarean sections.Founded in 2015 by Neil Ray, Raydiant Oximetry is headquartered in Mountain View, California. | $5M | Series A | Nov 01, 2021 | http://www.raydiantoximetry.com/ |

3 of 4 investments shown.

## Co-investors
- [KOFA Healthcare](https://shizune.co/investors/profile/kofa-healthcare-investments) — VC Fund, 4 deals together
- [Band of Angels](https://shizune.co/investors/profile/band-of-angels) — VC Fund, 2 deals together
- [FemHealth Ventures](https://shizune.co/investors/profile/femhealth-ventures) — VC Fund, 2 deals together
- [Rhia Ventures](https://shizune.co/investors/profile/rhia-ventures) — VC Fund, 2 deals together
- [SteelSky Ventures](https://shizune.co/investors/profile/steelsky-ventures) — VC Fund, 2 deals together
- [V-Capital](https://shizune.co/investors/profile/v-capital) — VC Fund, 2 deals together

## About Avestria Ventures

VC Fund · Lafayette, United States

Avestria Ventures is an investment firm that focuses on women's health and female-led life science and healthcare companies. They define women's health as illnesses that affect women exclusively (such as menopause), differently (such as cardiovascular disease), or disproportionately (such as Alzheimer's).

1 contacts available at Avestria Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Linda Greub | Co-founder & Managing Partner | https://shizune.co/investors/profile/linda-greub-25d9 |

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## FAQ

### What does Linda Greub invest in?

Linda Greub invests primarily in Medical, Health Care and Women's startups, most often at Series A and Private Equity stage. Most of the 4 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Linda Greub?

Public channels for Linda Greub include LinkedIn, X (Twitter) and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Linda Greub last invest?

The most recent investment recorded for Linda Greub closed in Aug 2023. Shizune tracks 4 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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