# Black Opal Ventures

> Black Opal Ventures is a VC fund backing Health Care. See 17 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: New York, United States
- Total investments: 17
- Last investment: Jun 2026
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/black-opal-ventures
- Website: https://www.blackopalventures.com

Black Opal Ventures is a VC fund in New York focused on Health Care and Artificial Intelligence. Black Opal is a venture capital investment firm.

## Contacts

5 contacts available for Black Opal Ventures. Shizune tracks 2 team members at Black Opal Ventures. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/black-opal-ventures?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $10M–$19M |
| Series A | $5.8M–$60M |
| Series B | $15M–$46M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Health Care | 7 | 41% |
| Artificial Intelligence | 6 | 35% |
| Medical Device | 4 | 24% |
| Medical | 2 | 12% |
| Software | 2 | 12% |

29 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 8 | 47% |
| Seed | 4 | 24% |
| Series B | 3 | 18% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 10 | 59% |
| United Kingdom | 2 | 12% |
| El Salvador | 1 | 6% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Eileen Tanghal | Managing Director | 1 | https://shizune.co/investors/profile/eileen-tanghal |
| Tara Bishop | Founder and Managing Director | 0 | https://shizune.co/investors/profile/tara-bishop-5768 |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Kalogon | Kalogon is the trailblazer in smart seating, best known for developing innovative solutions that reduce the stresses of sitting and improve seated health. Serving healthcare, defense, and aviation, Kalogon’s patent-pending Advanced Pressure Management System (APMS) powers products with adaptive customizations, ambient adjustments, and personalizedsettings to enhance comfort, restore blood flow, and reduce fatigue for those who sit for extended periods.With four Medicare-coded products on the market, Kalogon leverages its core technologies and user-centered design process to create a strong market fit across multiple industries. Beyond healthcare, Kalogon partners with the U.S. Air Force and leading aviation clients to adapt its technologies for demanding environments, improving comfort, sustaining performance, and promoting healthy seated living. Headquartered in Melbourne, Florida and founded in 2019, Kalogon is on a mission to eliminate the stresses of sitting. | $5.8M | Series A | Jun 04, 2026 |  |
| Thesis Care | Trovo Health uses AI technology to provide comprehensive healthcare solutions, combining smart algorithms with professional human coaching to deliver personalized patient care. | $45M | Series A | Mar 25, 2026 |  |
| Chamber Cardio | Chamber Cardio is a healthcare platform enhances cardiovascular health services offering panel management, financial metrics, clinical data, software support, and value-based contracting, enabling patients and healthcare sectors to receive appropriate treatment. | $60M | Series A | Feb 04, 2026 |  |
| Roebling | Roebling is the first AI-native development stack: process design, cost estimation, and financial modeling all in one workspace, where projects are delivered on time and under budget. | $20M | Series A | Oct 30, 2025 |  |
| Oath Surgical | Oath Surgical is creating the surgical care of the future, one that is value-based by design, tech-powered, and led by surgeons. The first vertically integrated system that combines tech-first surgical centers with AI software. | $24M | Series A | Oct 06, 2025 |  |
| Ansa Biotechnologies | Ansa Biotechnologies is manufactured via a chemical method that has remained essentially unchanged for 35 years and has approached a plateau. Ansa Biotechnologies is developing a novel DNA synthesis technology based on enzymes that will be more fast, accurate, and clean than existing methods. The technique promises to dramatically accelerateinnovation in biological research and engineering. | $46.4M | Series B | Oct 01, 2025 |  |
| Isaac Health | Isaac Health aims to democratize access to specialist dementia prevention and management through a virtual membership platform. It features a program of neuropsychological assessments, neurology telemedicine consults and memory coaching. | $10.5M | Series A | Aug 14, 2025 |  |
| Oath Surgical | Oath Surgical is creating the surgical care of the future, one that is value-based by design, tech-powered, and led by surgeons. The first vertically integrated system that combines tech-first surgical centers with AI software. | $10M | Seed | May 14, 2025 |  |
| AuthMind | AuthMind is an identity security firm that identifies and prevents hidden identity risks through access neural network technologies. The company's platform takes an all-encompassing approach and provides continuous access to risk intelligence. | $19.3M | Seed | Apr 22, 2025 |  |
| Parasail | Parasail is an AI deployment networking company that provides AI products to builders and innovators for secure compute. | $10M | Seed | Apr 02, 2025 |  |

10 of 17 investments shown.

## Co-investors
- [IQT](https://shizune.co/investors/profile/in-q-tel) — VC Fund, 2 deals together
- [KdT Ventures](https://shizune.co/investors/profile/kdt-ventures) — VC Fund, 2 deals together
- [Macquarie Capital](https://shizune.co/investors/profile/macquarie-capital-funds) — VC Fund, 2 deals together
- [Oak HC/FT](https://shizune.co/investors/profile/oak-hc-ft-partners) — VC Fund, 2 deals together
- [Obvious Ventures](https://shizune.co/investors/profile/obvious-ventures) — VC Fund, 2 deals together
- [Oxford Science Enterprises](https://shizune.co/investors/profile/oxford-sciences-innovation) — VC Fund, 2 deals together

## Similar investors

### Similar industry
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

### Similar country
- [Caricaco VC](https://shizune.co/investors/profile/caricaco-vc) — VC Fund
- [Innogen Capital](https://shizune.co/investors/profile/innogen-capital) — VC Fund
- [Bridge Latam](https://shizune.co/investors/profile/bridge-ba20) — VC Fund

## Featured in investor lists
- [All Investors in El Salvador](https://shizune.co/investors/investors-el-salvador)
- [All VC Funds in El Salvador](https://shizune.co/investors/vc-funds-el-salvador)
- [Software Investors in El Salvador](https://shizune.co/investors/software-investors-el-salvador)
- [SaaS Investors in El Salvador](https://shizune.co/investors/saas-investors-el-salvador)
- [SaaS VC Funds in El Salvador](https://shizune.co/investors/saas-vc-funds-el-salvador)
- [Artificial intelligence Investors in El Salvador](https://shizune.co/investors/artificial-intelligence-investors-el-salvador)

## FAQ

### What does Black Opal Ventures invest in?

Black Opal Ventures invests primarily in Health Care, Artificial Intelligence and Medical Device startups, most often at Series A and Seed stage. Most of the 17 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Black Opal Ventures's check size?

Black Opal Ventures typically joins rounds of $10M–$19M at Seed, $5.8M–$60M at Series A and $15M–$46M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Black Opal Ventures participates in.

### How do I contact Black Opal Ventures?

Public channels for Black Opal Ventures include LinkedIn and the website linked on this profile. 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.

### Who are the partners at Black Opal Ventures?

The team at Black Opal Ventures includes Eileen Tanghal (Managing Director) and Tara Bishop (Founder and Managing Director). The Team section lists each member with their title, investment count and links.

### 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co