Fundraising Fox

Remix Therapeutics

Watertown, US · Founded 2019 · Delaware corporation · 49 employees on LinkedIn · 6 known investors

Remix Therapeutics develops RNA reprogramming technology to treat various diseases and disorders. The company applies precision medicine approaches across oncology and other therapeutic areas.

Also known as Remix · Remix Therapeutics Inc.

Founders & leadership

Remix Therapeutics was founded in 2019 by Peter Smith, PhD and Peter Smith.

PS
Peter Smith, PhDCo-Founder, President and Chief Executive Officer
PS
Peter SmithCo-Founder, President and Chief Executive Officer
RG
Robert GagnonExecutive
HW
Heather WassermanExecutive
MP
Matthew PattersonNamed on SEC filing
SB
Scott BillerNamed on SEC filing

Board

KBKevin Bitterman
Kevin Bittermanin𝕏Board of DirectorsPartner at Atlas Venture
JGJeff Goater
Jeff GoaterinBoard MemberPartner at The Column Group
MR
Michael RomeBoard director

Investors · 6

Also in the syndicate · 1

Lynx1 Capital Management

Funding

SEC filings, press & company announcements

$13.7M disclosed across 1 of 4 rounds · 2023–2026

  • Undisclosed amountconcurrent private placementJun 2026
    Source ↗
$13.7MraisedJan 2024 · 21 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Peter SmithExecutive Officer, Director
  • Robert GagnonExecutive Officer
  • Matthew PattersonDirector
  • Kevin BittermanDirector
  • Jeff GoaterDirector
  • Michael RomeDirector
  • Scott BillerDirector
  • Heather WassermanExecutive Officer
Offering amount
$90M
Amount sold
$13.7M
First sale
Dec 2023
Incorporated
Corporation, Delaware, 2019
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Company profile

researched Aug 2026

Remix Therapeutics is a clinical-stage biotechnology company based in Watertown, Massachusetts that develops small-molecule therapeutics which modulate RNA processing in order to change the expression of disease-driving genes and proteins. The company's stated approach is to act at the RNA level - across transcription, 5' end capping, polyadenylation, alternative splicing and mRNA degradation - so as to reach targets, such as transcription factors, that have historically been considered undruggable by conventional small-molecule approaches. Company materials state that Remix launched in 2020 with an in-house technology platform built from scratch and has generated multiple discovery programs.

The lead program, REM-422, is an investigational, orally available, selective small-molecule mRNA degrader that targets the pre-mRNA of MYB, a transcription factor described as an oncogenic driver of solid tumors and hematologic malignancies. REM-422 is in Phase 1 clinical trials in adenoid cystic carcinoma (NCT06118086) and in acute myeloid leukemia/myelodysplastic syndromes (NCT06297941), and is also in preclinical work for additional cancers. The broader pipeline includes a preclinical program in MYC-dependent cancers, additional preclinical oncology and CNS targets, and multiple undisclosed targets under a collaboration with Roche.

In June 2026 Remix and Passage Bio announced a merger agreement under which the combined company would operate as Remix Therapeutics and advance Remix's pipeline, accompanied by a concurrent oversubscribed $100 million private placement.

Founding story

Company materials state that Remix launched in 2020 with the vision of transforming patients' lives by modulating RNA processing, building an in-house technology platform from scratch. Peter (Pete) Smith, PhD, is co-founder, President and CEO and leads fundraising, strategy, hiring and scientific activities; his prior role was Chief Scientific Officer at H3 Biomedicine. Third-party profiles give conflicting founding dates of 2018 and 2020. A company-published essay describes personal motivation from a family member's death from acute myeloid leukemia as part of the impetus for pursuing RNA processing approaches to undruggable proteins.

Business model

Remix operates as a therapeutics developer: it uses its proprietary REMaster discovery platform to generate small-molecule drug candidates, advances wholly owned programs such as REM-422 through clinical development, and licenses or partners platform-derived programs to large pharmaceutical companies. Partnered programs generate upfront payments, milestone payments and tiered royalties, as in the Roche agreement.

Sources describe pharma collaboration economics rather than product revenue: the Roche agreement provided $30 million upfront, up to $12 million in near-term milestones, total potential value of approximately $1 billion in milestones, and tiered royalties on any resulting products, with Roche responsible for development and commercialization. No approved products or product revenue are reported.

Traction

REM-422 has advanced into Phase 1/2 clinical testing (ARIA study) with first clinical results shared in 2025 and positive Phase 1/2 data in adenoid cystic carcinoma reported at the 2026 ASCO Annual Meeting; final Phase 1 dose-escalation results were accepted for oral presentation at that meeting. FDA Fast Track designation was granted in March 2026 for recurrent, metastatic or unresectable adenoid cystic carcinoma. Partnerships include Roche (January 2024) and Johnson & Johnson Innovative Medicine (2022). Reported funding figures differ across sources: a $60 million financing closing in January 2024, a $100 million private placement announced June 2026, and aggregate figures of $271.0 million (five rounds) and $60 million cited by different third-party aggregators. Headcount is reported at approximately 52 employees as of July 2026, with a 51-200 range listed elsewhere.

Latest developments

On June 24-25, 2026, Remix and Passage Bio announced a merger agreement under which the combined company would operate as Remix Therapeutics and advance Remix's pipeline, together with a concurrent oversubscribed $100 million private placement led by Decheng Capital with participation from Lynx1 Capital Management, Forge Life Science Partners, existing investors and other institutional firms; one source characterizes the transaction as a reverse merger. Earlier in 2026, the FDA granted Fast Track designation to REM-422 in adenoid cystic carcinoma (March 2026) and the company reported positive Phase 1/2 ARIA data at ASCO (May-June 2026).

Full profile — market position, technology, go-to-market, geography, history, risks & controversies

Market position

Remix positions itself within RNA-targeted drug discovery, pursuing small molecules rather than oligonucleotides or biologics to modulate RNA processing. Third-party commentary frames the company as part of a broader industry shift toward RNA-targeted therapeutics, with pharma partnerships from Roche and Johnson & Johnson cited as external validation of the platform. The company describes REM-422 as a first-in-class MYB mRNA degrader, and notes there are no approved treatment options for MYB-driven adenoid cystic carcinoma.

Stated differentiators include the REMaster platform's ability to identify large numbers of novel exon target sites via bioinformatics and machine learning, multiplexed high-throughput screening across dozens of targets simultaneously, a purpose-built chemical library oriented toward RNA processing mechanisms, an orally available small-molecule modality applied to targets typically pursued with oligonucleotides or biologics, and clinical validation from first-in-human data on a platform-derived molecule against MYB.

Technology

The REMaster drug discovery platform is built on three stated pillars. Data science and bioinformatics use an internal transcriptome database and machine learning to identify modulatable RNA target sites; the company states it has identified more than 1.6 million novel exon targets in the mRNA degradation space, which it describes as 25-fold more than the largest public database. Biology and biomolecular sciences apply a proprietary genetic toolkit for functional target validation plus multiplexed cell-based high-throughput screens that test dozens of targets in parallel. Medicinal and computational chemistry draw on a purpose-built proprietary chemical library enriched for compounds that interact with RNA processing mechanisms. Outputs are orally available small molecules, including mRNA degraders such as REM-422, that reduce target mRNA and protein expression.

Go-to-market

Remix advances wholly owned candidates through company-sponsored clinical trials while entering discovery and license collaborations with large pharma partners that assume development and commercialization for partnered programs. The company communicates progress through press releases, medical and investor conference presentations (2026 ASCO Annual Meeting oral presentation; Guggenheim Second Annual Healthcare Innovation Conference in late 2025), and regulatory milestones such as FDA Fast Track designation.

Patients and treating clinicians in oncology indications driven by difficult-to-drug targets - including adenoid cystic carcinoma, acute myeloid leukemia/myelodysplastic syndromes and other MYB- and MYC-dependent cancers - with stated future expansion into neurodegenerative and CNS disease. Large pharmaceutical companies are counterparties for discovery and development collaborations.

Geography

Headquartered in Watertown, Massachusetts, United States (100 Forge Road, Suite 400, Watertown, MA 02472 per one aggregator). Employees are reported as located in North America only.

History

Company statements place the launch in 2020. Third-party sources report multi-year discovery collaborations with Johnson & Johnson Innovative Medicine announced in 2022 and a January 2024 collaboration and license agreement with Roche that included $30 million upfront, up to $12 million in near-term milestones, up to roughly $1 billion in total milestones, and tiered royalties; the Roche deal was announced alongside the closing of a $60 million financing intended to support REM-422's move into the clinic. First clinical results for REM-422 were shared in 2025, described by the company as the first human data from a molecule generated on its REMaster platform. In March 2026 the FDA granted Fast Track designation to REM-422 in recurrent, metastatic or unresectable adenoid cystic carcinoma. Final Phase 1 dose-escalation results from the Phase 1/2 ARIA study were presented at the 2026 ASCO Annual Meeting, and in June 2026 the company announced a merger agreement with Passage Bio plus a $100 million private placement.

Risks & controversies

Sources contain inconsistent basic facts about the company, including founding year (2018 in aggregator profiles versus a stated 2020 launch on the company site), employee count (52 versus 51-200 versus an implausible 10,000+ listing), and total funding raised ($271.0M versus $60M across aggregators), indicating unreliable third-party data. Business risks evident from the sources include a pipeline concentrated on a single clinical asset, REM-422, which remains in Phase 1/2 with no approved products; dependence on partners Roche and Johnson & Johnson for milestone and royalty economics; and execution and closing risk associated with the announced Passage Bio merger and associated private placement.

Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
Employee rangeJul 202651-200
EmployeesJul 202652 people
Novel exon targets identified in mRNA degradation spaceJan 20261,600,000 targets
Number of funding rounds (aggregator-reported)Jan 2026$5
Roche deal near-term milestonesJan 2024$12M
Roche deal total potential valueJan 2024$1B
Roche deal upfront paymentJan 2024$30M
Total funding raised (aggregator-reported)Jan 2026$271M
Total funding raised (alternative aggregator figure)Jul 2026$60M

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Founder mafia

2 people who came through Remix Therapeutics went on to found or lead other companies.

Competitors · 4

by search overlap

Companies competing with Remix Therapeutics for the same Google search keywords, organic and paid, via search-intersection analysis.

Timeline · 7

launches, deals, and filings
Jun 2026
Merger agreement with Passage Bio announced

Passage Bio and Remix Therapeutics announced a merger agreement under which the combined company would operate as Remix Therapeutics and advance Remix's small-molecule RNA processing pipeline, led by REM-422; a concurrent oversubscribed $100 million private placement was announced. One source describes the transaction as a reverse merger.

source ↗

May 2026
Positive Phase 1/2 ARIA data for REM-422 presented at ASCO 2026

Remix announced positive data from the Phase 1/2 ARIA study of MYB mRNA degrader REM-422 in patients with adenoid cystic carcinoma at the 2026 American Society of Clinical Oncology Annual Meeting; final Phase 1 dose-escalation results were accepted for oral presentation at the meeting held May 29-June 2, 2026 in Chicago.

source ↗

Mar 2026
FDA Fast Track designation for REM-422 in adenoid cystic carcinoma

FDA granted Fast Track designation to REM-422 for recurrent, metastatic or unresectable adenoid cystic carcinoma, following preliminary Phase 1 results the company described as showing anti-tumor activity and a favorable safety profile.

source ↗

Nov 2025
Presentation at Guggenheim Second Annual Healthcare Innovation Conference

source ↗

Jan 2025
First clinical results reported for REM-422

Company states that in 2025 it shared the first clinical results for REM-422, marking the first human data from a molecule generated using the REMaster platform.

source ↗

Jan 2024
Roche collaboration and license agreement worth up to ~$1 billion

Roche agreed to pay $30 million upfront, with up to $12 million in near-term milestones and total potential value of about $1 billion plus tiered royalties, to collaborate on Remix's REMaster platform; the companies collaborate on discovery and preclinical work while Roche handles development and commercialization.

$30M source ↗

Jan 2022
Multi-year discovery collaboration with Johnson & Johnson Innovative Medicine

Third-party profile reports multi-year collaborations with Johnson & Johnson Innovation Medicine announced in 2022.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

Legal entities · 1

corporate structure
Remix TherapeuticsDelaware

In the news

Research sources · 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Remix Therapeutics do?
Clinical-stage biotech designing small molecules that modulate RNA processing, led by MYB mRNA degrader REM-422.
Who founded Remix Therapeutics?
Remix Therapeutics was founded by Peter Smith, PhD, Peter Smith in 2019.
Who are Remix Therapeutics's investors?
Remix Therapeutics's investors include Atlas Venture, Foresite Capital, The Column Group, ARCH Venture Partners, Decheng Capital.
How much funding has Remix Therapeutics raised?
Remix Therapeutics has disclosed $13.7M raised across 1 of its 4 known rounds.
Where is Remix Therapeutics headquartered?
Remix Therapeutics is headquartered in Watertown, US.