 Juan Carlos Lopez |
 Andy Marshall |
As is customary at the turn of the year, we have taken the opportunity to take a look back at financing deals we covered since issue#1, which went live in April last year. Together, these data offer a snapshot of how capital flowed into early-stage, preclinical therapeutic startups in 2025 — and where it did not.
Before diving into the numbers, it is worth qualifying that this analysis captures only publicly disclosed financing rounds, rather than the full universe of early-stage biotech funding. An increasing fraction of preclinical companies now operate in stealth, in part because of fast-moving competition from regions such as China. As a result, the figures presented here likely undercount the true level of early-stage activity.
From the start of our coverage in Q2 2025 through the end of December, we reported 195 preclinical financing rounds. Because Haystack Science focuses on discovery-stage and pre-IND companies, this number excludes financings for assets already in clinical development. Even so, the dataset provides a useful lens on early-stage investor behavior.
Independent industry analyses paint a consistent picture. Multiple sources indicate that 2025 was a year in which venture capital shifted toward later-stage, clinical-stage deals, which were fewer in number but larger in size. This trend was reinforced by ‘Q4 2025 Biopharma Licensing and Venture Report’, presented at the JP Morgan conference. According to JP Morgan, 2025 saw just 191 seed and Series A financings, the lowest total since 2020.
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According to the Haystack Science data sample, no venture fund made a series A investment in more than three companies last year (these series A financings ranged from $8–300 million, with a median of $42.5 million). As the deals that Haystack tracks are only the publicly disclosed subset, we expect our sample is skewed to companies that raised larger sums. In the deals we tracked, the most bloated series A ($300 million) went to Cambridge, Mass.-based Lila Sciences, a generative ML model powered startup building “autonomous, closed-loop experimentation using generative ML models to generate drug mechanism hypotheses, test them robotically in the lab with minimal human intervention, and iteratively learn from results.” Lila was backed by megafund Flagship Pioneering and General Catalyst.
21 funds invested in more than one series A round. These were: Arch Ventures, Atlas Venture, Lightstone Ventures, 3E Bioventures, Access Industries/Biotechnology, BGF, BVF Partners, Canaan Partners, Cormorant Asset Management, Dementia Discovery Fund, Eight Roads, Johnson & Johnson Innovation – JJDC, Khosla, Omega Funds, Orbimed, Polaris Partners, Samsara, Santé Ventures, Sofinnova Partners, The Column Group, and Versant Ventures. No fund invested in more than 3 series A investments in last year’s sample.
Further back in the pipeline, we tracked 60 deals. These seed financings—which ranged from $1.1–54.5 million with a median of $10.45 million—were mostly for smaller amounts ($1–$30 million), with a few much larger financing amounts. Overall, 85 different funds, family offices, angels and individuals participated in funding preclinical therapeutic startups in 2025. Of these 85 sources of financing, only 7 financed more than one company. The takeaway from this is that most (>90%) of companies at the seed stage receive funds from a completely unique set of investors.
The 7 financing entities involved in more than one seed deal were: AdBio Partners, Kurma Partners, NRW Bank, Ackermans & van Haaren (AvH), Bioinnovation Institute (BII), ClavystBio and ExSight Ventures. It is noteworthy that two of these funds are based in Paris, France: AdBio Partners and Kurma Partners. AdBio specializes in early-stage investments across Europe with a ~€86 million ($102 million) fund raised in 2021 focusing on oncology, immunology, and rare diseases. Kurma is part of the Eurazeo group, managing >€600 million in assets across several funds focused on early-stage therapeutics and diagnostics.
NRW.BANK, based in North Rhine-Westphalia, Germany, invests in innovative biotech companies focusing on tech-driven healthcare, bio-digital integration, and novel platforms for data/discovery, aligning with broader innovation goals. They appear to be an important source for the small scattering of financing (13) deals in German-speaking countries. NRW works closely with AvH, an Antwerp, Belgium-based diversified holding company and investment firm, with AvH Growth Capital a proactive investor in early-stage companies like DISCO Pharmaceuticals and Evla Bio.
Another very interesting seed funder is BII in Copenhagen Denmark. The institute provides in-kind grants of up to €3 million for bridging translational studies in European academic institutions. For those projects that progress to a company build, a combination of convertible loans of €500K (Venture Lab) and then €1.3 million (Venture House) are made available to complete seed funding. As of January 2026, BII has supported over 130 early-stage life science and deep tech companies, with many attracting significant external funding. This month, there was news that Novo Nordisk has just plowed another $856 million of funding into BII.
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Overall, in terms of the location of where most investment is occurring, our analysis reveals the capacity to host startups is expanding across the globe, with at least 19 countries hosting one preclinical startup that received funding in 2025. These countries were: USA, UK, France, Switzerland, China, The Netherlands, Canada, Denmark, Germany, Belgium, Japan, Spain, Israel, Australia, Ireland, Norway, Portugal, South Korea and Singapore. Perhaps the prominence of France as a location for preclinical therapeutic startups was most surprising from our sample. Interestingly, a lot of ex-US startups now also have a US (usually Cambridge, Mass.-based) headquarters. Digging deeper, 85 different cities around the world host a startup that obtained financing (pre-seed to series B) in 2025, with 20 cities hosting two or more. As expected, the Boston cluster led with 28 preclinical therapeutic startups, the Bay area hosted 19, and the UK’s Golden Triangle had 13. Of the following pack, some interesting standout cities were Paris, France (with 5 in our sample) and New York City (with 7), the latter long in the shadow of its Boston neighbor.
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In terms of the disease areas attracting early-stage investor money, cancer dominates, comprising the focus for 34.4% of the funding raises. This is slightly lower than the biopharma sector as a whole, where cancer comprises up to 45% of pipelines. Following cancer, neurodegenerative disease, autoimmune disease and inflammatory disease all figured prominently. The uptick in deals for companies tackling CNS disorders has been a rolling theme recently, given the burden of neurodegenerative disease and dementia on public health systems and the paucity of disease-modifying treatments. With the continuing stampede around GLP-1s/incretins, there was also a healthy number of metabolic/ endocrine disease startups financed.
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One last area we looked at was the type of therapeutic being financed by investment groups. Here again, the pharmaceutical industry’s traditional workhorse, the small molecule, remained pre-eminent in 2025, comprising 24% of financing deals in pre-seed, seed, series A and series B financings that were in the preclinical stage. Established modalities like monoclonal antibodies (mAbs) were a common focus. And there was a resurgence of interest in recombinant proteins and peptides (likely boosted by the focus on incretins and the metabolic disease and obesity space). Of new modalities, antibody-drug conjugates, bispecific and multispecific antibodies, antisense oligonucleotides (ASOs), small-interfering RNAs (siRNAs) and chimeric antigen receptor (CAR) immune cell (T cell and NK cells) also were to the fore, each making up around 6% of all the early-stage deals we tracked. A type of therapeutic gathering increasing attention is clearly the induced-proximity therapeutic sector (including the different flavors of PROTACs, DUBTACs and molecular glues). Finally, although a great deal has been mentioned about investor apathy for gene editing and gene therapy, these also captured 3-4% of the deals.
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