When was Si-Bone founded?

Si-Bone was founded in 2008 and raised its 1st funding round 1 year after it was founded.

Where is Si-Bone located?

Si-Bone is headquartered in San Jose, United States. It is registered at San Jose, California.

How many employees does Si-Bone have?

As of Apr 30, 2026, the latest employee count at Si-Bone is 554.

Is Si-Bone a funded company?

Si-Bone is a funded company, having raised a total of $103M across 7 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Mar 26, 2009.

When was the latest funding round of Si-Bone?

Si-Bone's latest funding was a $***** Series D round on Jun 17, 2016, with participation from 1 investor.

What is the annual revenue of Si-Bone?

Annual revenue of Si-Bone is $201M as on Dec 31, 2025.

Where does Si-Bone rank among its competitors?

Si-Bone ranks 2nd amongst 232 active competitors, of which 58 are funded. It stands 4th in terms of total funding among its competitors. The most recent competitor to raise funding was Spineology, which secured $8.76M in Nov, 2025.

Who are the top competitors of Si-Bone?

Si-Bone's top competitors include Paradigm Spine, Nevro and ATEC Spine. Among them, Spineology secured the most recent funding round in November, 2025.

Si-Bone - 2026 Company Profile, Team, Funding, Competitors & Financials

Si-Bone is a public company based in San Jose (United States), founded in 2008 by Mark A. Reiley. It operates as a Titanium implant fixation system. Si-Bone has raised $103M in funding from Arboretum Ventures and Skyline Ventures. The company has 232 active competitors, including 58 funded and 60 that have exited. Its top competitors include companies like Paradigm Spine, Nevro and ATEC Spine.

Company Details

SI-BONE is the developer of the iFuse Implant System, a minimally invasive surgical treatment for sacroiliac (SI) joint disorders. It also provides a listing of doctors for minimally invasive sacroiliac joint fusion surgery.

Website: si-bone.com
Registered Address: San Jose, California

Key Metrics

Founded Year

2008

Location

San Jose, United States

Stage

Public

Total Funding

$103M in 7 rounds

Latest Funding Round

Series D, Jun 17, 2016, $*****

Investors

Arboretum Ventures & 10 more

Ranked

2^nd among 232 active competitors

Annual Revenue

$201M as on Dec 31, 2025

Employee Count

554 as on Apr 30, 2026

Similar Companies

Paradigm Spine & 326 more

Exit Details

Public

View Si-Bone's full profile

Si-Bone is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
SI-BONE, INC. CIN: 262216351 , United States, Active	Dec 26, 999	$201M (As on Dec 31, 2025)	329 (As on Dec 31, 2024)	-

Si-Bone got listed on Oct 17, 2018.

Click here to take a look at Si-Bone's IPO in detail

Si-Bone has raised a total funding of $103M over 7 rounds. Its first funding round was on Mar 26, 2009. Its latest funding round was a Series D round on Jun 17, 2016 for $*****. 1 investor participated in its latest round. Si-Bone has 11 institutional investors.

Here is the list of recent funding rounds of Si-Bone:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jun 17, 2016	6343428	Series D	7198313	3112273	9158358	3791326
Nov 17, 2015	4367438	Conventional Debt	7630386	5618881	4115388	SVB & 1 more
May 26, 2015	3338966	Series D	2194306	6675914	5124576	Redline Capital Management

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View details of Si-Bone's funding rounds and investors

The founders of Si-Bone is Mark A. Reiley.

Here are the details of Si-Bone's key team members:

Mark A. Reiley: Former Founder of Si-Bone.

View details of Si-Bone's Founder profiles and Board Members

Si-Bone's employee count trend

Si-Bone has 554 employees as of Apr 26. Here is Si-Bone's employee count trend over the years:

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Top competitors of Si-Bone include Paradigm Spine, Nevro and ATEC Spine. Here is the list of Top 10 competitors of Si-Bone, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Paradigm Spine 2005, New York City (United States), Acquired	Manufacturer of stabilization devices for the healthcare industry	$142M	Athyrium Capital Management, HealthCor Partners ... & 6 others	67/100
2nd	Si-Bone 2008, San Jose (United States), Public	Titanium implant fixation system	$103M	Foresite Capital, Redline Capital Management ... & 9 others	64/100
3rd	Nevro 2006, Menlo Park (United States), Acquired	Provider of high-frequency spinal cord stimulation implants	$154M	Bay City Capital, Mayo Clinic Ventures & 9 others	62/100
4th	ATEC Spine 1990, San Diego (United States), Public	Developer of treatment solutions for spine disorders	-	Deerfield, Armistice Capital & 11 others	62/100
5th	LimiFlex 2008, San Carlos (United States), Series C	Developer of spinal implants for treating spinal stenosis	$25.3M	Scientific Health Development, Doorga & 2 others	60/100
6th	Spineart 2005, Plan les Ouates (Switzerland), Series B	Developer of orthopedic implants and minimally invasive instruments	$139M	Ernst Göhner, Gimv & 2 others	59/100
7th	4WEB Medical 2008, Frisco (United States), Series A	Innovative orthopedic implant company focused on advanced structural design and fusion	$12.5M	SWK Holdings, National Science Foundation	58/100
8th	Spineology 1997, St. Paul (Canada), Late Stage	Developer of minimally invasive spinal surgery devices	$75.7M	SV Health Investors, Horizon & 6 others	58/100
9th	SeaSpine 2002, Vista (United States), Public	Developer of spinal surgery treatment products for professionals	-	Novo Holdings, Prettybrook Partners & 2 others	57/100
10th	Expanding Orthopedics 2006, Hadera (Israel), Acquired	Develops expandable devices for spine care	-	Easton Capital Investment Group, Medica Venture Partners ... & 1 others	56/100