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- Day One Biopharmaceutical
Day One Biopharmaceutical Acquisition, Valuation & Financials
Day One Biopharmaceutical was acquired by Servier for $2.5B in March 2026, a 10.3x multiple on $243M of revenue.
Day One Biopharmaceutical acquisition price
$2.5B
Acquired by Servier · Mar 2026
Day One Biopharmaceutical revenue at acquisition
$243M
Last twelve months · Mar 2026
Day One Biopharmaceutical revenue multiple at acquisition
10.3x
EV/Revenue · Mar 2026
Cumulative funding Day One Biopharmaceutical raised
$190M
across 2 funding rounds
Day One Biopharmaceutical Overview
About Day One Biopharmaceutical
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 Biopharmaceutical Acquisition
Day One Biopharmaceutical 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 Biopharmaceutical had raised $190M across 2 funding rounds.
| Acquirer | Date | Type | Price | EV/Revenue |
|---|---|---|---|---|
| 5 Mar 2026 | Strategic M&A | $2.5B | 10.3x |
Day One Biopharmaceutical as a Public Company
Day One Biopharmaceutical 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 Biopharmaceutical market cap while listed
Day One Biopharmaceutical 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 Biopharmaceutical traded.
Day One Biopharmaceutical Funding History
Day One Biopharmaceutical has raised a total of $190M across 2 funding rounds.
Day One Biopharmaceutical's 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 Biopharmaceutical funding rounds
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Feb 2021 | Series B | RA Capital Management (lead); Boxer Capital; Putnam Premier IT; Canaan Partners; Janus Henderson; Biotechnology Value Fund; T. Rowe Price; Atlas Venture; Viking Global Investors; Access Biotechnology; Perceptive Advisors | $130M | - |
| 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 Biopharmaceutical?
11 investors have backed Day One Biopharmaceutical across its funding rounds, including Canaan Partners, Atlas Venture, Access Biotechnology, RA Capital Management, T. Rowe Price and Perceptive Advisors.
Lead investors include RA Capital Management.
Day One Biopharmaceutical 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 | Participant | Feb 2021 | ||
| 1 | Lead | Feb 2021 | ||
This data is available for Pro users. Sign up to see all 11 Day One Biopharmaceutical investors. Start Free Trial | ||||
Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
Sign up to see data on 350K+ funding rounds and disclosed revenue and EBITDA valuation multiples, from seed, through growth stage, to pre-IPO.
Start Free TrialAcquisitions by Day One Biopharmaceutical
Day One Biopharmaceutical has acquired 1 company to date.
Last acquisition by Day One Biopharmaceutical was on November 13th 2025. Day One Biopharmaceutical acquired Mersana Therapeutics for $285M.
Latest Acquisitions by Day One Biopharmaceutical
| 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 Biopharmaceutical acquisitions and their M&A valuation multiples. Start Free Trial | |
Day One Biopharmaceutical Competitors
Day One Biopharmaceutical competitors include listed companies like Structure Therapeutics, Supernus Pharmaceuticals, Joincare Pharmaceutical and Peptron, and private ones like Cambrian Biopharma and Sail Biomedicines.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | - | ($175M) | $2.5B | 38.9x | ||
| Publicly listed | $719M | $29M | $2.5B | 2.6x | ||
| Publicly listed | $2.3B | $567M | $2.5B | 1.2x | ||
| Publicly listed | $4M | ($11M) | $2.5B | - | ||
| Private | - | - | $2.5B | - | ||
| Private | - | - | $2.6B | - |
Day One Biopharmaceutical Public Comps
Day One Biopharmaceutical is no longer listed, but its public comps include Structure Therapeutics, Supernus Pharmaceuticals, Joincare Pharmaceutical, Peptron, Harmony Biosciences, ACROBiosystems, Viridian Therapeutics, Jamjoom Pharma, Granules India and Mineralys Therapeutics.
| Last FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| - | ($175M) | - | 38.9x | (6.6x) | (3.0x) | |||
| $719M | $29M | 3.0x | 2.6x | 73.9x | 13.8x | |||
| $2.3B | $567M | 1.1x | 1.2x | 4.6x | 7.0x | |||
| $4M | ($11M) | 602.3x | - | (230.5x) | - | |||
| $868M | $233M | 2.3x | 2.0x | 8.5x | 6.7x | |||
| $125M | $28M | 18.7x | 15.6x | 82.4x | 59.1x | |||
| $71M | ($365M) | 26.0x | 51.6x | (5.1x) | (4.5x) | |||
| $400M | $143M | 6.1x | 5.8x | 17.1x | 16.7x | |||
This data is available for Pro users. Sign up to see all Day One Biopharmaceutical competitors and their valuation data. Start Free Trial | ||||||||
Common questions about Day One Biopharmaceutical
| When was Day One Biopharmaceutical founded? | Day One Biopharmaceutical was founded in 2018. |
| Where is Day One Biopharmaceutical headquartered? | Day One Biopharmaceutical is headquartered in United States. |
| Is Day One Biopharmaceutical publicly listed? | No, Day One Biopharmaceutical was acquired by Servier in March 2026. |
| Who acquired Day One Biopharmaceutical? | Day One Biopharmaceutical was acquired by Servier in March 2026. |
| How much was Day One Biopharmaceutical acquired for? | Day One Biopharmaceutical was acquired for $2.5B in March 2026, a 10.3x revenue multiple. |
| How much funding has Day One Biopharmaceutical raised? | Day One Biopharmaceutical has raised $190M across 2 funding rounds. |
| What was Day One Biopharmaceutical's last funding round? | Day One Biopharmaceutical's last funding round was a $130M Series B in February 2021, led by RA Capital Management. |
| Who are Day One Biopharmaceutical's investors? | Day One Biopharmaceutical's investors include Canaan Partners, Atlas Venture, Access Biotechnology, Boxer Capital, Putnam Premier IT, Janus Henderson, Biotechnology Value Fund, T. Rowe Price, RA Capital Management, Viking Global Investors and 1 other. |
| Which companies are comparable to Day One Biopharmaceutical? | Companies comparable to Day One Biopharmaceutical include Structure Therapeutics, Supernus Pharmaceuticals, Joincare Pharmaceutical, Peptron, Cambrian Biopharma and Sail Biomedicines. |
| What was Day One Biopharmaceutical's market cap before the acquisition? | Day One Biopharmaceutical 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 Biopharmaceutical's revenue as a public company? | Day One Biopharmaceutical's last reported twelve-month revenue was $172M (March 2026). |
| How many companies has Day One Biopharmaceutical acquired? | Day One Biopharmaceutical has acquired 1 company, including Mersana Therapeutics. |
| What was the largest acquisition by Day One Biopharmaceutical? | The $285M acquisition of Mersana Therapeutics in November 2025 is the largest acquisition Day One Biopharmaceutical has made to date. |
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