Spear Bio: Funding, Investors & Team (Nov 2026)
• Spear Bio is addressing the increasing demand for highly sensitive immunoassays in small sample sizes. • Utilizing technology acquired from Harvard University, our platform can identify single-digit quantities of proteins in extremely tiny volumes. • Our objective is to create impactful immunoassays that can be seamlessly adopted by academic and clinical researchers and practitioners.
Spear Bio has raised $45.0M across 2 funding rounds on record, the most recent a Series A of $45.0M announced in Jul 2024.
That round is above the $8.8M median round size for Biotechnology companies tracked on FundedIQ over the last two years.
Spear Bio Company Profile and Key Stats
Latest funding round on record: Jul 2024.
Spear Bio Funding Rounds
1 of 2 rounds was announced without a disclosed amount and is excluded from the total.
Spear Bio announced a Seed in Nov 2023; the amount was not disclosed.
8 months later, a Series A of $45.0M was announced in Jul 2024.
Spear Bio Founders and Leadership Team
Contact details for the Spear Bio team: 1 of 1 has an email address on file.
Start 14-day free trial →Spear Bio Funding Compared to Other Biotechnology Startups
Spear Bio's latest round of $45.0M is above the median round in Biotechnology. Medians cover the last 24 months of disclosed rounds.
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Spear Bio Funding FAQs
What does Spear Bio do?
• Spear Bio is addressing the increasing demand for highly sensitive immunoassays in small sample sizes. • Utilizing technology acquired from Harvard University, our platform can identify single-digit quantities of proteins in extremely tiny volumes. • Our objective is to create impactful immunoassays that can be seamlessly adopted by academic and clinical researchers and practitioners.
How much funding has Spear Bio raised?
Spear Bio has raised $45.0M across 2 rounds on record. The most recent is a Series A of $45.0M announced in Jul 2024.
When did Spear Bio last raise funding?
Spear Bio's most recent funding round on record is a Series A of $45.0M, announced in Jul 2024.
Who founded Spear Bio?
FundedIQ lists Feng Xuan (Founder) at Spear Bio.
Where is Spear Bio headquartered?
Spear Bio is based in Weston, Massachusetts, United States.
How many employees does Spear Bio have?
Spear Bio is in the 11-50 employee band.
How does Spear Bio's funding compare to other Biotechnology startups?
Spear Bio's latest round of $45.0M is above the $8.8M median round size for Biotechnology companies on FundedIQ across 4,188 tracked companies over the last two years.
About FundedIQ's Spear Bio Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Spear Bio is left off this page rather than filled in.
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