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- Day One Biopharmaceuticals
Day One Biopharmaceuticals Acquisition, Valuation & Financials
Day One Biopharmaceuticals was acquired by Servier for $2.5B in March 2026, a 10.3x multiple on $243M of revenue.
Day One Biopharmaceuticals acquisition price
$2.5B
Acquired by Servier · Mar 2026
Day One Biopharmaceuticals revenue at acquisition
$243M
Last twelve months · Mar 2026
Day One Biopharmaceuticals revenue multiple at acquisition
10.3x
EV/Revenue · Mar 2026
Cumulative funding Day One Biopharmaceuticals raised
$190M
across 2 funding rounds
Day One Biopharmaceuticals Overview
About Day One Biopharmaceuticals
Day One Biopharmaceuticals Inc is a clinical-stage biopharmaceutical company. It is dedicated towards developing and commercializing targeted therapies for patients of all ages with genetically defined cancers. Initially, it focuses on clinical development efforts on pediatric patients living with cancer, a vulnerable population that has been underserved in the recent revolution in targeted therapeutics and immuno-oncology. The product candidate, DAY301 is an antibody drug conjugate (ADC) that has shown antitumor activity in preclinical models.
Founded
2018
HQ
Website
Status
Acquired
Customer focus
B2B
Revenue model
Licensing
Revenue
$243M (Mar 2026)
Valuation
$2.5B (acquired Mar 2026)
Sectors
Day One Biopharmaceuticals Acquisition
Day One Biopharmaceuticals was acquired by Servier for $2.5B on 5 March 2026.
The acquisition price implies a 10.3x revenue multiple on $243M of revenue.
Before the acquisition Day One Biopharmaceuticals had raised $190M across 2 funding rounds.
| Acquirer | Date | Type | Price | EV/Revenue |
|---|---|---|---|---|
| 5 Mar 2026 | Strategic M&A | $2.5B | 10.3x |
Sources: prnewswire.com, prnewswire.com, prnewswire.com, prnewswire.com, prnewswire.com
Day One Biopharmaceuticals as a Public Company
Day One Biopharmaceuticals traded as NAS: DAWN before it was taken private. Its acquisition was announced in March 2026. March 2026 is its last month on record as a listed company, with a market cap of $2.2B and an enterprise value of $1.8B.
Last-twelve-month revenue was $172M, and the shares traded at 10.3x EV/Revenue.
Over the 4 years before that, its market cap grew from $615M in March 2022 to $2.2B.
Day One Biopharmaceuticals market cap while listed
Day One Biopharmaceuticals EV/Revenue (LTM) while listed
| As of | Market cap | Revenue (LTM) | EBITDA (LTM) | EBITDA margin | EV/Revenue | EV/EBITDA |
|---|---|---|---|---|---|---|
| Mar 2026 | $2.2B | $172M | - | - | 10.3x | - |
| Mar 2025 | $804M | $139M | ($198M) | -143% | 2.0x | (1.4x) |
| Mar 2024 | $1.4B | $3M | ($216M) | -6455% | 322.0x | (5.0x) |
| Mar 2023 | $984M | $100K | ($164M) | -147549% | 5794.2x | (3.9x) |
| Mar 2022 | $615M | - | ($83M) | - | - | (4.0x) |
Market cap, enterprise value and last-twelve-month figures are month-end values, up to the last month Day One Biopharmaceuticals traded.
Day One Biopharmaceuticals Funding History
Day One Biopharmaceuticals has raised a total of $190M across 2 funding rounds.
Day One Biopharmaceuticals' first fundraising round was a $60M Series A in May 2020. The most recent completed round was a $130M Series B in February 2021.
Day One Biopharmaceuticals funding rounds
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Feb 2021 | Series B | RA Capital Management (lead); Boxer Capital; Canaan Partners; Janus Henderson; Biotechnology Value Fund; T. Rowe Price; Atlas Venture; Viking Global Investors; Franklin Templeton; Access Biotechnology; Perceptive Advisors | $130M | Day One Biopharmaceuticals announced a $130 million Series B financing in February 2021, led by RA Capital Management. Existing investors Access Biotechnology, Atlas Venture and Canaan Partners participated, and the round also drew crossover and public-market investors. The company had emerged from stealth in May 2020 with a $60 million Series A from Access Biotechnology, Atlas Venture and Canaan, and said it had raised more than $190 million in total. The proceeds were directed to drug development and preparation for the commercial launch of its lead program, DAY101, a treatment for pediatric low-grade glioma. Day One is a biopharmaceutical company that develops targeted therapies for children and adults with cancer. It is headquartered in the San Francisco Bay Area and later went public on Nasdaq under the ticker DAWN. |
| May 2020 | Series A | Canaan Partners; Atlas Venture; Access Biotechnology | $60M | Day One Biopharmaceuticals emerged from stealth in 2020 with a $60 million Series A funding round led by Canaan Partners, Access Biotechnology, and Atlas Venture. The company was founded to develop targeted cancer treatments for children, with a particular focus on genetically defined malignancies. Its lead program, DAY101 (later renamed tovorafenib/Ojemda), is a RAF inhibitor previously licensed from Takeda that targets both BRAF-mutated and BRAF wild-type fusion-driven cancers. The drug had been tested in more than 250 patients at the time of the Series A announcement, with clinical data expected to be disclosed in 2021 and 2022. The $60 million Series A proceeds were earmarked for advancing DAY101 through development and for identifying additional oncology assets. Day One operated with a lean, specialized team of experienced drug developers, including veterans from Array BioPharma and Genentech, enabling the company to efficiently navigate the complex rare disease therapy landscape. The company's precision medicine platform focused on identifying novel therapeutic targets for serious illnesses driven by genetic mutations, positioning it as a player in the high-growth oncology and rare disease sectors. |
Who has invested in Day One Biopharmaceuticals?
11 investors have backed Day One Biopharmaceuticals across its funding rounds, including Canaan Partners, Atlas Venture, Access Biotechnology, RA Capital Management, T. Rowe Price and Franklin Templeton.
Lead investors include RA Capital Management.
Day One Biopharmaceuticals Investors
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 2 | Participant | May 2020 | ||
| 2 | Participant | May 2020 | ||
| 2 | Participant | May 2020 | ||
| 1 | Participant | Feb 2021 | ||
| 1 | Participant | Feb 2021 | ||
| 1 | Participant | Feb 2021 | ||
| 1 | Participant | Feb 2021 | ||
| 1 | Lead | Feb 2021 | ||
| 1 | Participant | Feb 2021 | ||
This data is available for Pro users. Sign up to see all 11 Day One Biopharmaceuticals investors. Start Free Trial | ||||
Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
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Start Free TrialAcquisitions by Day One Biopharmaceuticals
Day One Biopharmaceuticals has acquired 1 company to date.
Last acquisition by Day One Biopharmaceuticals was on November 13th 2025. Day One Biopharmaceuticals acquired Mersana Therapeutics for $285M.
Latest Acquisitions by Day One Biopharmaceuticals
| Description | - |
| HQ Country | |
| HQ City | - |
| Deal Date | 13 Nov 2025 |
| Valuation | $285M |
| EV/Revenue | |
| EV/EBITDA | |
This data is available for Pro users. Sign up to see all Day One Biopharmaceuticals acquisitions and their M&A valuation multiples. Start Free Trial | |
Day One Biopharmaceuticals Competitors
Day One Biopharmaceuticals competitors include listed companies like China Resources Double-Crane, MBX Biosciences, Jafron Biomedical and HUTCHMED (China), and private ones like Cambrian Biopharma and Sail Biomedicines.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $1.7B | $406M | $2.5B | 1.6x | ||
| Publicly listed | - | ($98M) | $2.5B | - | ||
| Private | - | - | $2.5B | - | ||
| Publicly listed | $302M | $123M | $2.5B | 7.1x | ||
| Publicly listed | $549M | $465M | $2.6B | 2.1x | ||
| Private | - | - | $2.6B | - |
Day One Biopharmaceuticals Public Comps
Day One Biopharmaceuticals is no longer listed, but its public comps include China Resources Double-Crane, MBX Biosciences, Jafron Biomedical, HUTCHMED (China), Palvella Therapeutics, Pharvaris, Buchang Pharma, Regencell Bioscience, Arcus Biosciences and Celldex Therapeutics.
| Last FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $1.7B | $406M | 1.6x | 1.6x | 6.4x | 6.6x | |||
| - | ($98M) | - | - | (21.0x) | (13.5x) | |||
| $302M | $123M | 7.4x | 7.1x | 18.1x | 15.3x | |||
| $549M | $465M | 2.3x | 2.1x | 2.8x | 61.7x | |||
| - | ($38M) | - | - | (60.7x) | (29.7x) | |||
| - | ($202M) | - | - | (10.2x) | (9.7x) | |||
| $1.8B | $174M | 1.5x | - | 15.1x | - | |||
| - | ($11M) | - | - | (230.1x) | - | |||
This data is available for Pro users. Sign up to see all Day One Biopharmaceuticals competitors and their valuation data. Start Free Trial | ||||||||
Common questions about Day One Biopharmaceuticals
| When was Day One Biopharmaceuticals founded? | Day One Biopharmaceuticals was founded in 2018. |
| Where is Day One Biopharmaceuticals headquartered? | Day One Biopharmaceuticals is headquartered in United States. |
| Is Day One Biopharmaceuticals publicly listed? | No, Day One Biopharmaceuticals was acquired by Servier in March 2026. |
| Who acquired Day One Biopharmaceuticals? | Day One Biopharmaceuticals was acquired by Servier in March 2026. |
| How much was Day One Biopharmaceuticals acquired for? | Day One Biopharmaceuticals was acquired for $2.5B in March 2026, a 10.3x revenue multiple. |
| How much funding has Day One Biopharmaceuticals raised? | Day One Biopharmaceuticals has raised $190M across 2 funding rounds. |
| What was Day One Biopharmaceuticals' last funding round? | Day One Biopharmaceuticals' last funding round was a $130M Series B in February 2021, led by RA Capital Management. |
| Who are Day One Biopharmaceuticals' investors? | Day One Biopharmaceuticals' investors include Canaan Partners, Atlas Venture, Access Biotechnology, Boxer Capital, Janus Henderson, Biotechnology Value Fund, T. Rowe Price, RA Capital Management, Viking Global Investors, Franklin Templeton and 1 other. |
| Which companies are comparable to Day One Biopharmaceuticals? | Companies comparable to Day One Biopharmaceuticals include China Resources Double-Crane, MBX Biosciences, Cambrian Biopharma, Jafron Biomedical, HUTCHMED (China) and Sail Biomedicines. |
| What was Day One Biopharmaceuticals' market cap before the acquisition? | Day One Biopharmaceuticals had a market cap of $2.2B in March 2026, its last month on record as a listed company, trading at 10.3x EV/Revenue. |
| What was Day One Biopharmaceuticals' revenue as a public company? | Day One Biopharmaceuticals' last reported twelve-month revenue was $172M (March 2026). |
| How many companies has Day One Biopharmaceuticals acquired? | Day One Biopharmaceuticals has acquired 1 company, including Mersana Therapeutics. |
| What was the largest acquisition by Day One Biopharmaceuticals? | The $285M acquisition of Mersana Therapeutics in November 2025 is the largest acquisition Day One Biopharmaceuticals has made to date. |
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