# Arkin Bio: portfolio, investments and team

> Arkin Bio is an investment firm. 2 investments on record, 1 in the last 12 months, latest Jun 2026. Portfolio, stages, co-investors and team.

Source: https://millionrounds.com/fund/arkin-bio (Millionrounds; every figure on the page links to its filing or article)

[Investor](https://millionrounds.com/investors)

# Arkin Bio

Last cheque observed Jun 2026; 2 cheques on record.

Email

Investment firm Deploying now

Series A Series B

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Deploying now

**100%** of best year **1** **cheques in 12 months**, 2 on record

Since the last cheque **136** days **00** hrs **00** min **00** sec

Median round **$94M** Rounds led **0 of 2**

Pitch Arkin Bio

## Arkin Bio highlights

- 01 1 cheques in the last 12 months
- 02 Mostly Series A and Series B: 100% of its rounds

## What they do

- **Type:** Investment firm (from a list, unverified)
- **Cheque size:** Not stated
- **Cold pitches:** Not stated

## The record

Every round we can evidence, newest first **2 appearances**

- **2026** 1 round
- **Jun** **[Bionyra Pharma](https://millionrounds.com/company/bionyra-pharma)** Series A · FR · Ventureburn **$165M** With 7 others
- **2019** 1 round
- **Jan** **[Keros Therapeutics](https://millionrounds.com/company/keros-therapeutics)** Series B · US · FinSMEs **$23M** With 4 others

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

## The cheque

Series A Series B

Median round joined **$94M** the round, not its cheque

Led 0 of 2 rounds **0%**

- **Sole investor:** Never alone
- **Last cheque:** Jun 2026

Rounds by stage said on their site

- Series A *1*
- Series B *1*

Cheques by month Led Joined

Dec 2023 Nov 2026

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## Recently backed

The latest companies Arkin Bio put money into.

[**Keros Therapeutics** $23M · Jan 2019](https://millionrounds.com/company/keros-therapeutics)

## Quick answers about Arkin Bio

### What does Arkin Bio invest in?

Arkin Bio invests most often at Series A and Series B (100% of the rounds on record).

### How active is Arkin Bio?

2 investments on record, 1 of them in the last 12 months. The most recent was in Jun 2026.

### What has Arkin Bio invested in recently?

Its most recent investments on record: Bionyra Pharma (Series A, Jun 2026) and Keros Therapeutics (Series B, Jan 2019).

### How big are Arkin Bio's cheques?

The median round it joins is $94M.

### Is Arkin Bio investing now?

Yes: it is actively investing, with 1 investments in the last 12 months.

### What kind of investor is Arkin Bio?

Arkin Bio is an investment firm.

### Where does this information on Arkin Bio come from?

From 2 articles and filings naming it in a round, public registers and its own website, checked and rebuilt every night.

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Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=arkin-bio) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=arkin-bio)