Dren Bio Funding, Investors & Competitors

Dren Bio has raised $155M across 5 funding rounds, most recently a undisclosed-stage round in June 2026.

Last Dren Bio funding round

Undisclosed stage

Amount undisclosed · Jun 2026

Cumulative funding Dren Bio raised

$155M

across 5 funding rounds

Key investors in Dren Bio

Dren Bio Overview

About Dren Bio

Dren Bio is a San Francisco-based biotechnology company engineering proteins to deplete disease-causing cells and aggregates. It advances multiple therapeutic projects as standalone assets through drenbio.com.


Founded

2019

HQ

United StatesSan Francisco, CA

Status

Privately held

Customer focus

B2B

Revenue model

Licensing

Dren Bio Funding History

Dren Bio has raised a total of $155M across 5 funding rounds.

Dren Bio's first fundraising round was a $5M Series A in July 2019. The most recent completed round was a undisclosed-stage round in June 2026.

Dren Bio funding rounds

Dren Bio funding rounds
DateStageInvestorsRaisedDeal Summary
Jun 2026Undisclosed stageHBM Healthcare Investments (lead)-Dren Bio closed a financing round with a group of investors to fund further development of its Targeted Myeloid Engager pipeline and to explore additional therapeutic areas. HBM Healthcare Investments subscribed USD 15 million, taking its total invested to USD 27 million and its holding to about 6.7 percent. The round followed Sanofi's acquisition of the DR-0201 clinical programme, which had already validated the underlying platform.
Jul 2024Strategic investmentNovartis (lead)$25MDren Bio, Inc. is a privately held, clinical-stage biopharmaceutical company based in Foster City, California, focused on developing antibody therapeutics for cancer, autoimmune, and other serious diseases using its proprietary Targeted Myeloid Engager and Phagocytosis Platform. This platform generates bispecific antibodies that activate myeloid cells selectively in the presence of target antigens to deplete pathogenic cells, aiming for improved therapeutic effects and safety. On July 24, 2024, Dren Bio announced a strategic collaboration with Novartis Pharma AG to discover and develop novel bispecific antibodies for cancer. Under the agreement, Dren Bio receives $150 million upfront from Novartis, including a $25 million equity investment, with potential for up to $2.85 billion in milestone payments across preclinical, clinical, regulatory, and commercial stages, plus tiered royalties on net sales of resulting products. Novartis will handle development, manufacturing, regulatory affairs, and commercialization for selected programs. This deal builds on prior partnerships, such as one with Pfizer in January 2022 and a $65 million Series B round in mid-2022. Dren Bio's lead asset, DR-01, is a monospecific, non-fucosylated antibody targeting CD94, currently in Phase 1/2 trials for cytotoxic lymphomas and large granular lymphocytic leukemia. Its pipeline also includes DR-0201 (undisclosed bispecific for B-cell depletion in Phase 1 for non-Hodgkin’s lymphoma) and DR-0202 (undisclosed bispecific myeloid cell engager starting Phase 1 in 2025), with additional discovery-stage programs tied to the Novartis and prior Pfizer deals. The company has around 50 employees and recently expanded its leadership with Amit Mehta as COO and CBO, while receiving the 2025 Prix Galien USA Award for Best Biotech Startup and extending collaboration with Sanofi.
Jun 2022Series BAisling Capital (lead); HBM Healthcare Investments (lead); Revelation Partners; Taiho Ventures; 8VC; Alexandria Venture Investments; SR One; Biotechnology Value Fund; HBM Partners; ArrowMark Partners; Mission BioCapital; Pfizer$65MDren Bio, a clinical-stage biopharmaceutical company based in Foster City, California, develops therapeutic antibodies for cancer, autoimmune, and other serious diseases using two programs: one engineering antibodies with enhanced antibody-dependent cellular cytotoxicity (ADCC) and another leveraging its proprietary Targeted Myeloid Engager and Phagocytosis Platform. The company completed a $65 million Series B financing on June 14, 2022, co-led by Aisling Capital and HBM Healthcare Investments, with new investors including Pfizer, ArrowMark Partners, and Revelation Partners, alongside existing investors such as SR One, 8VC, Taiho Ventures, BVF Partners, Mission BioCapital, and Alexandria Venture Investments. This round brought Dren Bio's total capital raised to over $156 million, following a $60 million Series A in October 2020 and a separate $25 million upfront from a Pfizer collaboration earlier in 2022 valued at over $1 billion in potential milestones. Proceeds from the Series B will advance Dren Bio's lead asset, DR-01, an antibody designed to selectively eliminate pathologic immune cells causing hematologic malignancies like large granular lymphocytic leukemia and cytotoxic lymphomas, as well as autoimmune disorders, with a first clinical trial planned for mid-2022. Funds will also accelerate development of additional candidates from its myeloid engager and phagocytosis platform, tested successfully in non-human primates for both oncology and non-oncology indications. Andrew Schiff, M.D., from Aisling Capital, and Chandra P. Leo, M.D., from HBM Partners, joined the board upon closing. Dren Bio's platform aims to produce therapies addressing unmet needs in difficult-to-treat cancers and beyond, building on expertise in antibody discovery and development. The financing positions the company to reach key inflection points, including clinical proof-of-concept for DR-01 and pipeline expansion. Earlier, Pfizer partnered with Dren on bispecific antibodies for oncology targets, highlighting external validation of its myeloid cell harnessing approach.
Oct 2020Series ASR One (lead); Taiho Ventures (lead); HBM Healthcare Investments; 8VC; Alexandria Venture Investments; Biotechnology Value Fund; Mission BioCapital$60MDren Bio is a protein-engineering technology company developing therapies to deplete cells, protein aggregates, and other disease-causing agents. The company's lead programs target hematologic neoplasms and solid cancers, with secondary focus on autoimmune disorders and protein aggregation diseases. In October 2020, Dren Bio closed a $60 million Series A financing round led by SR One (the venture capital arm of GlaxoSmithKline) and Taiho Ventures (the corporate venture capital arm of Taiho Pharmaceutical). The round included participation from existing investors 8VC and Mission BioCapital, and new investors BVF Partners, HBM Healthcare Investments, and Alexandria Venture Investments. The company was founded in 2019 and was led by CEO and co-founder Nenad Tomasevic, who previously co-founded Allakos, a clinical-stage publicly traded biotech company. The Series A proceeds were directed toward advancing two lead antibody-based candidates through early clinical development: DR-01, designed to treat rare leukemias and lymphomas as well as specific autoimmune phenotypes, and DR-02, an enhanced platform to deplete disease-causing cells through a novel mechanism engaging different immune effector cells. By March 2022, the company had raised an additional $65 million in Series B funding, and by July 2024 had completed a corporate minority round for $25 million, bringing total funding to approximately $155 million across four rounds.
Jul 2019Series A-$5MDren Bio closed a $6 million Seed Financing in 2019 led by 8VC with participation by Mission BioCapital and prominent industry veterans. The company, founded in 2019, develops therapeutic antibodies using protein-engineering technologies to deplete pathologic cells, protein aggregates, and other disease-causing agents for cancer, autoimmune, and serious diseases. Dren Bio's pipeline includes programs like DR-01 for rare leukemias, lymphomas, and autoimmune disorders, and DR-02 for enhanced antibody-based depletion.

Who has invested in Dren Bio?

13 investors have backed Dren Bio across its funding rounds, including HBM Healthcare Investments, 8VC, Alexandria Venture Investments, SR One, Biotechnology Value Fund and Mission BioCapital.

Lead investors include HBM Healthcare Investments, Novartis, Aisling Capital, SR One and Taiho Ventures.


Dren Bio Investors

Investors in Dren Bio by funding rounds participated
InvestorHQRoundsRoleFirst check
HBM Healthcare InvestmentsSwitzerlandZug3LeadOct 2020
Taiho VenturesUnited StatesCalifornia City, CA2LeadOct 2020
8VCUnited StatesSan Francisco, CA2ParticipantOct 2020
Alexandria Venture InvestmentsUnited StatesLos Angeles, CA2ParticipantOct 2020
SR OneUnited StatesUnited States2LeadOct 2020
Biotechnology Value FundUnited StatesSan Francisco, CA2ParticipantOct 2020
Mission BioCapitalUnited StatesUnited States2ParticipantOct 2020
Revelation PartnersUnited StatesSan Francisco, CA1ParticipantJun 2022
NovartisSwitzerlandBasel1LeadJul 2024
HBM PartnersSwitzerlandZug1ParticipantJun 2022
ArrowMark PartnersUnited StatesDenver, CO1ParticipantJun 2022

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Dren Bio Competitors

Dren Bio competitors include listed companies like Eli Lilly, Johnson & Johnson, AbbVie and Merck, and private ones like Biosplice Therapeutics and Biocon Biologics.

Public and private companies comparable to Dren Bio
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Eli LillyUnited StatesUnited StatesPublicly listed$65B$28B$1.0T13.1x
Johnson & JohnsonUnited StatesUnited StatesPublicly listed$94B$40B$651B6.8x
AbbVieUnited StatesUnited StatesPublicly listed$61B$17B$467B8.1x
MerckUnited StatesUnited StatesPublicly listed$65B$28B$363B6.2x
Biosplice TherapeuticsUnited StatesSan Diego, CAPrivate--$12B-
Biocon BiologicsIndiaBangalorePrivate$1.1B-$4.5B4.2x

Dren Bio Public Comps

Dren Bio is still privately-owned, but its public comps include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Roche, Novartis, AstraZeneca, Amgen, Novo Nordisk and Gilead Sciences.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Eli Lilly$65B$28B16.5x13.1x38.7x27.0x
Johnson & Johnson$94B$40B7.2x6.8x17.0x18.3x
AbbVie$61B$17B8.7x8.1x30.6x17.6x
Merck$65B$28B6.3x6.2x14.7x21.0x
Roche$77B$26B5.0x4.9x14.6x12.4x
Novartis$57B$22B5.5x5.5x14.2x13.3x
AstraZeneca$59B$19B4.8x4.5x14.6x12.7x
Amgen$37B$17B6.8x6.5x14.8x14.4x

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Common questions about Dren Bio

When was Dren Bio founded?Dren Bio was founded in 2019.
Where is Dren Bio headquartered?Dren Bio is headquartered in San Francisco, CA, United States.
Is Dren Bio publicly listed?No, Dren Bio is a private, VC-backed company.
How much funding has Dren Bio raised?Dren Bio has raised $155M across 5 funding rounds.
What was Dren Bio's last funding round?Dren Bio's last funding round was a undisclosed-stage round in June 2026, led by HBM Healthcare Investments.
Who are Dren Bio's investors?Dren Bio's investors include HBM Healthcare Investments, Taiho Ventures, 8VC, Alexandria Venture Investments, SR One, Biotechnology Value Fund, Mission BioCapital, Revelation Partners, Novartis, HBM Partners and 3 others.
Which companies are comparable to Dren Bio?Companies comparable to Dren Bio include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Biosplice Therapeutics and Biocon Biologics.

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