When was Spear Bio founded?

Spear Bio was founded in 2021 and raised its 1st funding round within a year of its incorporation.

Where is Spear Bio located?

Spear Bio is headquartered in Boston, United States.

How many employees does Spear Bio have?

As of Oct 31, 2026, the latest employee count at Spear Bio is 56.

Is Spear Bio a funded company?

Spear Bio is a funded company, having raised a total of $49M across 4 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Oct 14, 2021.

When was the latest funding round of Spear Bio?

Spear Bio's latest funding was a $***** Series A round on Jul 23, 2024, with participation from 5 investors.

Where does Spear Bio rank among its competitors?

Spear Bio ranks 1st amongst 85 active competitors, of which 14 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was ProAxsis, which secured $299K in Jul, 2025.

Who are the top competitors of Spear Bio?

Spear Bio's top competitors include US BioTek Laboratories, Accellix and Olink. Among them, ProAxsis secured the most recent funding round in July, 2025.

Spear Bio - 2026 Company Profile, Team, Funding & Competitors

Spear Bio is a series A company based in Boston (United States), founded in 2021 by Peng Yin. It operates as a Developer of ultrasensitive immunoassays and proteomics platforms for detecting protein biomarkers. Spear Bio has raised $49M in funding from investors like CDH, Foresite Capital and Bio-Techne. The company has 85 active competitors, including 14 funded and 13 that have exited. Its top competitors include companies like US BioTek Laboratories, Accellix and Olink.

Company Details

Developer of ultrasensitive immunoassays and proteomics platforms for detecting protein biomarkers. It offers TNAB-sure SARS-CoV-2 neutralizing antibody test kits for detecting antibodies in small samples. It also, offer a reagent-based platform for ultrasensitive protein detection in small sample volumes, with applications in research and diagnostics.

Key Metrics

Founded Year

2021

Location

Boston, United States

Stage

Series A

Total Funding

$49M in 4 rounds

Latest Funding Round

Series A, Jul 23, 2024, $*****

Investors

CDH & 6 more

Ranked

1^st among 85 active competitors

Employee Count

56 as on Oct 31, 2026

Similar Companies

US BioTek Laboratories & 97 more

View Spear Bio's full profile

Spear Bio is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Reports
Spear Bio Inc CIN: 861761044 , United States, Active	Dec 31, 2020	-	-	-

Spear Bio has raised a total funding of $49M over 4 rounds. Its first funding round was on Oct 14, 2021. Its latest funding round was a Series A round on Jul 23, 2024 for $*****. 5 investors participated in its latest round. Spear Bio has 7 institutional investors.

Here is the list of recent funding rounds of Spear Bio:

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Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jul 23, 2024	2370485	Series A	2477887	5295631	8464619	3184143
Nov 13, 2023	5865681	Seed	4883872	6568701	5379110	Maverick Ventures & 1 more
Oct 18, 2022	5137945	Seed	9481133	8634568	8693779	3611188

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View details of Spear Bio's funding rounds and investors

The founders of Spear Bio is Peng Yin.

Here are the details of Spear Bio's key team members:

Peng Yin: Co-Founder of Spear Bio and founder of 2 other companies, panOpen and NuProbe.
Contact Info: 1 email address

View details of Spear Bio's Founder profiles and Board Members

Spear Bio's employee count trend

Spear Bio has 56 employees as of Oct 26. Here is Spear Bio's employee count trend over the years:

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Top competitors of Spear Bio include US BioTek Laboratories, Accellix and Olink. Here is the list of Top 10 competitors of Spear Bio, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Spear Bio 2021, Boston (United States), Series A	Developer of ultrasensitive immunoassays and proteomics platforms for detecting protein biomarkers	$49M	Foresite Capital, Maverick Ventures & 5 others	64/100
2nd	US BioTek Laboratories 2008, Shoreline (United States), Acquired	Provider of enzyme-linked immunosorbent assay technology services	$19.5M	Capitala Group, Pike Street Capital	60/100
3rd	Accellix 2007, San Jose (United States), Acquired	Developer of immunotherapy-based assay delivery platform	$35.8M	Axcel, BioMerieux & 2 others	59/100
4th	Olink 2004, Uppsala (Sweden), Acquired	Provider of products and services for human protein biomarker research and development	-	Vitruvian Partners, EQT & 5 others	53/100
5th	SurModics 1979, Eden Prairie (United States), Acquired	Manufacturer of medical device coatings specialty polymers and diagnostic materials	-	-	53/100
6th	ProAxsis 2013, Belfast (United Kingdom), Acquired	Developer of diagnostic test for the detection of respiratory conditions	$2.79M	Northern Ireland Science, NetScientific & 5 others	52/100
7th	Amberstone Biosciences 2016, Laguna Hills (United States), Series A	Developer of microfluidic drug discovery platform	$12M	Viva BioInnovator, Sinovation Ventures & 4 others	50/100
8th	Presage Biosciences 2008, Seattle (United States), Series E	Translational oncology company pioneering drug development with its CIVO platform	$35M	Celgene, Takeda & 6 others	48/100
9th	Correlia Biosystems 2013, Berkeley (United States), Series A	Developer of immunoassay platforms to quantify proteins for proteomics and pharmaceutical applications	$10.9M	Neotribe, Pangaea Ventures & 12 others	43/100
10th	Biosensia 2006, Dublin (Ireland), Acquired	Point-of-care in vitro diagnostics for immunoassays	$10M	Seroba Lifesciences, Act Venture Capital & 4 others	42/100