# Cem Şibay

> Cem Şibay is a seed investor in Seattle backing Software and Artificial Intelligence. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Location: Seattle, United States
- Total investments: 4
- Last investment: Oct 2025
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/cemsibay

Cem Şibay is a seed investor in Seattle focused on Software and Artificial Intelligence. Cem Şibay

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $400k–$1M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 3 | 75% |
| Artificial Intelligence | 3 | 75% |
| Consulting | 2 | 50% |
| Personal Health | 2 | 50% |
| Family | 1 | 25% |

15 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 3 | 75% |
| Pre-Seed | 1 | 25% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Turkey | 2 | 50% |
| United States | 2 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Upsonic | Upsonic is a platform that allows users to create artificial intelligence agents designed to perform tasks in businesses. The platform prevents AI agents from hallucinating. | $1M | Seed | Oct 14, 2025 |  |
| Buluttan | We are a weather intelligence house. Fed by our hyper resolution, high accuracy weather forecast engine, we are building products to enhance financial and operational efficiency of our stakeholders in addition to helping them mitigate weather related safety risks to their assets and employees | $1M | Pre-Seed | May 08, 2024 |  |
| Cubtale | Cubtale is the first AI coach that improves the quality of baby care by providing real-time content, product and expert recommendations to new parents. | $500K | Seed | Jan 29, 2024 |  |
| Fit Brokoli | Fit Brokoli is an online dietitian service platform that uses machine learning to provide personalised nutrition advice. | $400K | Seed | May 03, 2023 |  |

4 of 4 investments shown.

## Co-investors
- [APY Ventures](https://shizune.co/investors/profile/apy-ventures) — VC Fund, 1 deal together
- [Future Impact Fund](https://shizune.co/investors/profile/future-impact-fund) — VC Fund, 1 deal together
- [OrangeFund](https://shizune.co/investors/profile/orangefund) — VC Fund, 1 deal together
- [ScaleX Ventures](https://shizune.co/investors/profile/scalex-ventures) — VC Fund, 1 deal together

## Similar investors

### Similar industry
- [SOSV](https://shizune.co/investors/profile/sosv) — VC Fund
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- [FJ Labs](https://shizune.co/investors/profile/fj-labs) — VC Fund

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
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### Similar country
- [Alesta Yatırım](https://shizune.co/investors/profile/alesta-girisim) — VC Fund
- [APY Ventures](https://shizune.co/investors/profile/apy-ventures) — VC Fund
- [Boğaziçi Ventures](https://shizune.co/investors/profile/bo%C4%9Fazi%C3%A7i-ventures) — VC Fund

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## FAQ

### What does Cem Şibay invest in?

Cem Şibay invests primarily in Software, Artificial Intelligence and Consulting startups, most often at Seed and Pre-Seed stage. Most of the 4 investments tracked by Shizune back companies in Turkey. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Cem Şibay's check size?

Cem Şibay typically joins rounds of $400k–$1M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Cem Şibay participates in.

### When did Cem Şibay last invest?

The most recent investment recorded for Cem Şibay closed in Oct 2025. 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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