Series Unknown Funded Biotechnology Research Startups
Across these 11 “Series Unknown” biotechnology research rounds, the largest disclosed amount is HAON Life Sciences’ $12M on 2025-04-09, which is substantia…
Across these 11 “Series Unknown” biotechnology research rounds, the largest disclosed amount is HAON Life Sciences’ $12M on 2025-04-09, which is substantially above the rest of the disclosed figures shown: the next-highest disclosed rounds are Rebus Biosystems ($18M on 2022-11-03) and HAON at $12M, while several entries cluster in the sub-$5M range (e.g., FibroBiologics $3M on 2026-06-29; Auxilium Biotechnologies $4M on 2025-10-23; Orange Grove Bio $5M on 2024-04-24). A clear temporal cluster appears in late 2022: four rounds close between 2022-11-01 and 2022-11-14 (Walela $50K, Rebus Biosystems $18M, The Citizen Science Lab $500K, Cybele Microbiome $890K), followed by a long gap until 2023-06-06 (TeraCyte Analytics, undisclosed) and 2024-04-24 (Orange Grove Bio). Geographically, the list is split between the US and Europe, with the only repeated metro being San Diego, California (Auxilium Biotechnologies 2025-10-23 $4M and Cybele Microbiome 2022-11-14 $890K). Dates run from 2022-11-01 through 2026-06-29, with one undisclosed amount (TeraCyte Analytics on 2023-06-06) among 11 rows.
Most recent rounds
11 shownRelated listings
Frequently asked
What does the largest disclosed round look like relative to other disclosed amounts on this page?
Rebus Biosystems’ $18M on 2022-11-03 is the top disclosed figure, dwarfing several smaller rounds such as Love Lifesciences’ $280K (2022-11-23), Walela’s $50K (2022-11-01), and Verschuren Centre’s $1M (2023-09-05). HAON Life Sciences’ $12M (2025-04-09) is next-tier but still notably below the $18M peak.
Are there any time windows where multiple rounds concentrate in quick succession?
Yes. Four rounds land within a two-week stretch in late 2022: Walela ($50K, 2022-11-01), Rebus Biosystems ($18M, 2022-11-03), The Citizen Science Lab ($500K, 2022-11-08), and Cybele Microbiome ($890K, 2022-11-14). Outside that window, the entries are more spaced, with the next US/EU anchor dates like TeraCyte Analytics (2023-06-06, undisclosed) and Orange Grove Bio (2024-04-24 $5M).
Do certain locations or geographies show up more than others?
San Diego, California appears twice: Auxilium Biotechnologies raised $4M on 2025-10-23 and Cybele Microbiome raised $890K on 2022-11-14. Otherwise, the remaining companies are single-location entries across the US (e.g., Houston, Cincinnati, Chicago) and Europe (e.g., HAON Life Sciences in Dublin on 2025-04-09 and TeraCyte Analytics in Israel on 2023-06-06).
Is the “Series Unknown” classification consistent, and are there any undisclosed amounts?
All 11 rows list “Series Unknown” in the series field. Only one row shows an undisclosed amount: TeraCyte Analytics on 2023-06-06; all other amounts shown are disclosed (e.g., $3M for FibroBiologics on 2026-06-29 and $50K for Walela on 2022-11-01).
Which rounds are most likely to be “near-term” based on the most recent dates shown?
The most recent two entries are FibroBiologics ($3M on 2026-06-29) and Auxilium Biotechnologies ($4M on 2025-10-23). In the surrounding period, HAON Life Sciences follows with $12M on 2025-04-09, while the next earlier disclosed rounds include Orange Grove Bio ($5M on 2024-04-24) and Verschuren Centre ($1M on 2023-09-05).
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