# Homology Medicines funding: rounds and investors

> Homology Medicines has raised $144M across 2 rounds since 2017. Investors include Temasek Holdings, ARCH Venture Partners and 5AM Ventures.

Source: https://millionrounds.com/company/homology-medicines (Millionrounds; every figure on the page links to its filing or article)

United States · [Funded startup](https://millionrounds.com/companies)

# Who invested in *Homology Medicines*

2 rounds we have observed, with the 13 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Biotech Healthcare Wellness

Funding summary Updated 26 Oct 2026

**$144M** raised across 2 rounds since 2017, from 2 sources

**$84M** Series B **$60M** Round

- **Latest round:** Round, $60M Nov 2020
- **Biggest round:** $84M Series B · Aug 2017
- **Investors:** 13

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2018 2019 2020

**$84M** Series B

**$60M** Round

- **First round:** Series B, $84M
- **Biggest round:** $84M
- **Between rounds:** 3.3 years

## The rounds

- **Nov 2020** Round **$60M** *5 new* [Temasek Holdings](https://millionrounds.com/fund/temasek) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) [Vivo Capital](https://millionrounds.com/fund/vivo-capital) [Maverick Ventures](https://millionrounds.com/fund/maverick-ventures) Source recorded
- **Aug 2017** Series B **$84M** *8 new* [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) [Novartis](https://millionrounds.com/fund/novartis) [HBM](https://millionrounds.com/fund/hbm) [VIDA](https://millionrounds.com/fund/vida) Deerfield Management/ Fidelity Maverick Rock Springs Vivo Reported by FinSMEs SEC filing: $84M sold, first sale Jul 2017

## Founders and team

From the SEC filings it signed: 4 on the team.

- **Albert Seymour** Executive Officer i
- **Arthur Tzianabos** Executive Officer, Director i
- **Brad Smith** Executive Officer i
- **Siyamak Rasty** Executive Officer i

On the board, as filed i *Cameron Wheeler* *Kush Parmar* *Mahendra Shah* *Richard Gregory* *Steven Gillis*

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Series B** 2017 **Round** 2020 [Temasek Holdings](https://millionrounds.com/fund/temasek) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) [Vivo Capital](https://millionrounds.com/fund/vivo-capital) [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) [Novartis](https://millionrounds.com/fund/novartis) [Maverick Ventures](https://millionrounds.com/fund/maverick-ventures) [HBM](https://millionrounds.com/fund/hbm) [VIDA](https://millionrounds.com/fund/vida) Deerfield Management/ Fidelity

## Everyone who backed them

[Temasek Holdings](https://millionrounds.com/fund/temasek) VC firm **1** round

[ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) VC firm **1** round

[5AM Ventures](https://millionrounds.com/fund/5am-ventures) VC firm **1** round

[Vivo Capital](https://millionrounds.com/fund/vivo-capital) Private equity **1** round

[Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) VC firm **1** round

[Novartis](https://millionrounds.com/fund/novartis) VC firm **1** round

[Maverick Ventures](https://millionrounds.com/fund/maverick-ventures) VC firm **1** round

[HBM](https://millionrounds.com/fund/hbm) Venture studio **1** round

[VIDA](https://millionrounds.com/fund/vida) Company **1** round

Deerfield Management/ Fidelity no record of our own yet **1** round

Maverick no record of our own yet **1** round

Rock Springs no record of our own yet **1** round

Vivo no record of our own yet **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=homology-medicines).

## Quick answers about Homology Medicines

### Who invested in Homology Medicines?

Homology Medicines's investors include Temasek Holdings, ARCH Venture Partners, 5AM Ventures, Vivo Capital and Alexandria Real Estate Equities, and 8 more on record.

### How much has Homology Medicines raised?

Homology Medicines has raised $144M across 2 rounds since 2017.

### When did Homology Medicines last raise?

Homology Medicines's most recent round was an Undisclosed round of $60M in Nov 2020.

### What was Homology Medicines's biggest round?

Homology Medicines's largest round on record is $84M (Series B), in Aug 2017.

### Who backed Homology Medicines first?

Homology Medicines's first round on record, in Aug 2017, was backed by Alexandria Real Estate Equities, Novartis and HBM and 5 others.

### What stage is Homology Medicines at?

Homology Medicines's latest named round is an Undisclosed round, in Nov 2020.

### Where is Homology Medicines based?

Homology Medicines is based in the United States.

## Companies like Homology Medicines

In the same sector, and raised in the last eighteen months.

[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)

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