Form 8-K - Current report

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________________________________________________________________

FORM 8-K

____________________________________________________________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): January 8, 2024

____________________________________________________________________________

SI-BONE, INC.

(Exact name of registrant as specified in its charter)

____________________________________________________________________________

Delaware

001-38701

26-2216351

(State or other jurisdiction of
incorporation or organization)

(Commission
File Number)

(I.R.S. Employer
Identification No.)

471 El Camino Real

Suite 101

Santa Clara, CA 95050

(Address of principal executive offices) (Zip Code)

(408) 207-0700

(Registrant’s telephone number, include area code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)


☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))


☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.0001 per share	SIBN	The Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On January 8, 2024, SI-BONE, Inc. (the "Company") issued a press release (the “Press Release”) announcing preliminary unaudited revenue for the fourth quarter and full year 2023. A copy of the Press Release is attached as Exhibit 99.1 to this current report on Form 8-K and is incorporated by reference herein.

Item 7.01 – Regulation FD Disclosure.

Members of the Company’s management team expect to meet with investors and analysts the week of January 8, 2024, to discuss the Company performance, using presentation materials which are furnished and attached as Exhibit 99.2.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits



Exhibit No.						Description

99.1						Press release dated January 8, 2024
99.2						Presentation dated January 2024
104						Cover Page Interactive Date File (embedded within the Inline XBRL document)

The information in Items 2.02 and 7.01 and Exhibits 99.1 and 99.2, of this Current Report on Form 8-K are being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 as amended (Exchange Act), or otherwise subject to the liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended (Securities Act). The information in Items 2.02 and 7.01, and Exhibits 99.1 and 99.2 shall not be deemed incorporated by reference in any filing under the Securities Act, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.




		SI-BONE, INC.

Date:	January 8, 2024	By:	/s/ Anshul Maheshwari
			Anshul Maheshwari
			Chief Financial Officer
			(Principal Financial and Accounting Officer)

Exhibit 99.1

SI-BONE Announces Preliminary Revenue for the Fourth Quarter and Full Year 2023

Fiscal Year 2023 revenue of $138.5 - $138.7 million representing growth of over 30%

SANTA CLARA, Calif., January 8, 2024 – SI-BONE, Inc. (Nasdaq: SIBN), a medical device company dedicated to solving musculoskeletal disorders of the sacropelvic anatomy, today announced its preliminary and unaudited revenue for fourth quarter and full year 2023.

Fourth Quarter 2023 Summary

•Worldwide revenue expected to be in the range of $38.5-$38.7 million, representing growth of approximately 21% compared to the prior year period

•U.S. revenue expected to be in the range of $36.5-$36.6 million, representing growth of approximately 22% compared to the prior year period

•Ended the quarter with approximately 1,130 active surgeons in the U.S., representing growth of approximately 22% compared to the prior year period

Fiscal Year 2023 Summary

•Worldwide revenue expected to be in the range of $138.5-138.7 million, representing growth of approximately 30% compared to the prior year period

•U.S. revenue expected to be in the range of $130.5-$130.6 million, representing growth of approximately 32% compared to the prior year period

Cash and marketable securities are expected to be approximately $166.0 million as of December 31, 2023, implying net cash usage of $0.8 million in the fourth quarter.

The fourth quarter and full year 2023 revenue and cash and marketable securities included in this release are preliminary and prior to the completion of SI-BONE's financial closing procedures and audit procedures by its external auditors and therefore may be subject to adjustment. SI-BONE expects to provide fourth quarter and full year 2023 financial results during its fourth quarter 2023 earnings call in February 2024.

About SI-BONE, Inc.

SI-BONE (NASDAQ: SIBN) is a global leader in technology for surgical treatment of musculoskeletal disorders of the sacropelvic anatomy. Since pioneering minimally invasive SI joint surgery in 2009, SI-BONE has supported over 3,600 surgeons in performing a total of over 95,000 sacropelvic procedures. A unique body of clinical evidence supports the use of SI-BONE’s technologies, including two randomized controlled trials and over 125 peer reviewed publications. SI-BONE has leveraged its leadership in minimally invasive SI joint fusion to commercialize novel solutions for adjacent markets, including adult deformity, spinopelvic fixation and pelvic trauma.

For additional information on the company or the products including risks and benefits, please visit www.si-bone.com.

Forward Looking Statements

The statements in this press release regarding expectations of future events or results, including SI-BONE’s expectations of continued revenue and procedure growth and financial outlook, contained in this press release are "forward-looking" statements. These forward-looking statements are based on SI-BONE's current expectations and inherently involve significant risks and uncertainties. These risks include preliminary fourth quarter and full year 2023 revenue and cash and marketable securities, which is subject to continued review by SI-BONE and its auditors and significant adjustments may be made before final results are determined, SI-BONE's ability to introduce and commercialize new products and indications, SI-BONE's ability to maintain favorable reimbursement for procedures using its products, the impact of any future economic weakness on the ability and desire of patients to undergo elective procedures including those using SI-BONE's devices, SI-BONE's ability to manage risks to its supply chain, and future capital requirements driven by new surgical systems requiring instrument tray investment. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these and other risks and uncertainties, many of which are described in the company's most recent filings on Form 10-K and Form 10-Q, and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC's Internet site (www.sec.gov), especially under the caption "Risk Factors." SI-BONE does not undertake any obligation to update forward-looking statements and expressly disclaims any obligations or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein, except as required by law.

Investor Contact

Saqib Iqbal

Sr. Director, FP&A and Investor Relations

investors@SI-BONE.com

SI-BONE Corporate Overview January 2024

This presentation contains “ forward-looking statements,” which are statements related to events, results, activities or developments that SI-BONE expects, believes or anticipates will or may occur in the future. Forward-looking often contain words such as “intends,” “estimates,” “anticipates,” “hopes,” “projects,” “plans,” “expects,” “seek,” “believes,” "see," “should,” “will,” “would,” “target,” and similar expressions and the negative versions thereof. Such statements are based on SI-BONE’s experience and perception of current conditions, trends, expected future developments and other factors it believes are appropriate under the circumstances, and speak only as of the date made. Forward-looking statements are inherently uncertain and actual results may differ mater ially from assumptions, estimates or expectations reflected or contained in the forward-looking statements as a result of various factors. R isks to SI-BONE’s results include preliminary four th quar ter and full year 2023 revenue and cash and marketable securities, which is subject to continued review by SI-BONE and its auditors and significant adjustments may be made before final results are determined, the company’s ability to introduce and commercialize new products and indications, its ability to maintain favorable reimbursement for procedures using its products, the impact of any future economic weakness on the ability and desire of patients to undergo elective procedures including those using SI- BONE's devices, its ability to manage risks to its supply chain, and future capital requirements dr iven by new surgical systems requiring instrument tray investment. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these and other risks and uncertainties, many of which are described in the company's most recent filings on Form 10-K and Form 10-Q, and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC's Internet site (www.sec.gov), especially under the caption "Risk Factors". SI-BONE does not under take any obligation to update forward-looking statements and expressly disclaims any obligations or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein, except as required by law. This presentation includes certain non-GAAP measures, including Adjusted EBITDA. For a reconciliation of such non-GAAP measures to GAAP accounting metrics, please refer to the final page of this presentation or SI-BONE’s most recent earnings release. This presentation also includes preliminary fourth quarter and full-year 2024 revenue and cash and marketable securities, which remain subject to review and finalization as part of SI-BONE’s year end financial audit. 2 Safe Harbor Statement

Identifying Unmet Clinical Needs in the Sacropelvic Space Innovation 3 Differentiated Product Families 77 WW Patents Evidence 2 Randomized Controlled Trials 125+ Peer-reviewed Publications Education 3,600+ WW Surgeons 1 95,000+ Procedures Performed 2 Commercialization 82 Territory Managers 150+ CSS and Agents Market Leader >$3B Opportunity Breakthrough Products Differentiated Health Economics Scalable Infrastructure Note: As of January 8, 2024. 1. Trained and performed at least one procedure since inception of the company. 2. Since inception. 3

Large Addressable Markets with Attractive Fundamentals ~470,000 Target U.S. Annual Procedures 1 > $3 Billion Total U.S. Addressable Market 1 280,000 60,000 130,000 SI Joint Dysfunction 2 Pelvic Trauma 5 Adult Deformity 3+ Degenerative Spine 4 Spinopelvic Fixation $2.4 Billion $0.3 Billion $1.0 Billion Target U.S. Annual Procedures Total U.S. Annual Addressable Market 1. Management estimate for existing and potential products in 2024. Total addressable market defined as target case volume x Current ASP. 2. Sources: Jensen M, et al. Magnetic Resonance Imaging of the Lumbar Spine in People Without Back Pain. N Engl J Med. 1994;331:69-116.; Bernard 1987, Schwarzer 1995, Maigne 1996, Irwin 2007,Sembrano 2009.; INSITE RCT data: 5 years in pain and 31% of patients screened were eligible for surgery.; 4. 1.2M therapeutic injections per year with average patient in 5 years of pain = ~280K cases 3. 30K target procedures; 70K Deformity Procedures (Source: U.S.2020 Wallstreet Report) less Pediatric Procedures (Source: www.hopkinsmedicine.org) 4. 100K target procedures: 400K Lumbar Fusion Procedures (Source: 2020 Wallstreet Report); 25% procedures are L4-S1 and L5-S1 (Source: Orthopedic Network News, October 2020) 5. US Fragility FX TAM: 136K Incidence x 40% surgical candidates = 54K; High Energy FX TAM: 6K Pelvic Trauma Surgeries = 6K Source: Management estimates based on internal research; Melton, et al. (1981). Epidemiologic features of pelvic fractures. Clin Orthop Relat Res; Rommens, et al. (2017). Fragility fractures of the pelvis. JBJS; Demetriades, et al. (2002). Pelvic fractures with abdominal injuries. J Am Coll Surg. 4

WW REVENUE ($M) Strong Demand Drove Record Revenue in 2023 5 2023 WW REVENUE ($M) 2023 U.S. REVENUE ($M) $32.7 $33.3 $34.0 1Q23 2Q23 3Q23 4Q23E $30.5 $31.2 $32.3 1Q23 2Q23 3Q23 4Q23E Note: As of January 8, 2024 Note: The fourth quarter and full year 2023 revenue and cash and marketable securities included in this release are preliminary and prior to the completion of SI-BONE's financial closing procedures and audit procedures by its external auditors and therefore may be subject to adjustment. SI-BONE expects to provide fourth quarter and full year 2023 financial results during its fourth quarter 2023 earnings call in February 2024. $36.5 - $36.6 $106.4 $138.5 - $138.7 FY22 FY23E 30%+ $38.5 - $38.7

Continued Record Surgeon Engagement 6 U.S. ACTIVE SURGEON BASE 925 1,130 4Q22 4Q23 ~22% 12th consecutive quarter of double- digit U.S. active surgeon growth 7th consecutive quarter of 20%+ U.S. procedure volume growth Note: Rounded numbers as of January 8, 2024 Note: The fourth quarter and full year 2023 revenue and cash and marketable securities included in this release are preliminary and prior to the completion of SI-BONE's financial closing procedures and audit procedures by its external auditors and therefore may be subject to adjustment. SI-BONE expects to provide fourth quarter and full year 2023 financial results during its fourth quarter 2023 earnings call in February 2024. U.S. 4Q PROCEDURE VOLUME 3,500 4,300 4Q22 4Q23 ~21%

Entering 2024 With a Strong Balance Sheet 7 Note: As of January 8, 2024 Note: The fourth quarter and full year 2023 revenue and cash and marketable securities included in this release are preliminary and prior to the completion of SI-BONE's financial closing procedures and audit procedures by its external auditors and therefore may be subject to adjustment. SI-BONE expects to provide fourth quarter and full year 2023 financial results during its fourth quarter 2023 earnings call in February 2024. CASH BALANCE ($M) Continued improvement in cash outflow while investing in the business ▪ 4Q23 net cash usage estimated to be ~$0.8 million Entering 2024 with strong liquidity ▪ ~$166 million in expected cash and equivalents $169.4 $166.8 $166.0 2Q23 3Q23 4Q23E

1/5/2024 Pioneering Sacropelvic Solutions 8 >95,000 Procedures >3,600 Surgeons >300M U.S. Covered Lives Note: As of January 8,2024

LAST JOINT LARGEST JOINT SI JOINT Major Joints Market 9

A Major Gap in Sacroiliac Joint Therapy NON-SURGICAL MANAGEMENT SURGERY MEDICATIONS, PHYSICAL THERAPY THERAPEUTIC INJECTIONS RADIO-FREQUENCY ABLATION OPEN SI JOINT FUSION MIS SI JOINT FUSION 10

11 Diagnostic Algorithm Acceptance and Adoption Source: Petersen, et al. BMC Musculoskeletal Disorders. 2017;18(1):188. DOI 10.1186/s 12891-017-1549-6 PATIENT HISTORY PROVOCATIVE TESTS LOCAL ANESTHETIC INJECTION MEDICARE (MACs) PRIVATE PAYORS Accuracy equals or exceeds other lumbar spine diagnoses

Comprehensive Sacropelvic Solutions Portfolio iFuse / iFuse 3D Market Leader in SI Joint Fusion iFuse TORQ Disruptive Technology for Fragility Fractures SI Joint Fusion Pelvic Trauma Adult Deformity iFuse Bedrock Granite Breakthrough Fixation and Fusion Solution Adult Deformity Degenerative Spine iFuse Navigation iFuse Neuromonitoring iFuse Robotics iFuse Bone Enabling Technologies 12

Patent Protected Differentiated Platform ▪ 77 issued patents: U.S. (59), OUS (18) ▪ iFuse implant patent until Dec 2025 ▪ Triangular broach instrument patent until Feb 2034 ▪ iFuse-3D implant patents until Sept 2035 3-D TECHNOLOGY Rectilinear profile, longitudinal struts, and struts connecting the longitudinal struts 13 Note: As of January 8, 2024. INSTRUMENT Triangular broach instrument and the methods of using the instrument ▪ 56 pending patents: U.S. (34), OUS (22) iFuse Bedrock Granite Inner shank w ith external distal threads and an outer sleeve w ith threads, surface growth features, and fenestrations iFuse TORQ Helical threads, porous netw ork of struts disposed betw een the threads, and the porous height is less than the major thread diameter ▪ iFuse Bedrock Granite implant patent until Feb 2039 ▪ iFuse TORQ implant patent until Nov 2040

Proprietary, Differentiated iFuse Technology® Rotation  6x resistance (vs. 12mm Rialto screw)1 Strength  3x strength (vs. stand 8.0mm cannulated screw)2 Safety  Low complication rate3,4 Revision  3.5% (4-year)5 Clinical Evidence  125+ publications (2 RCTs)6 Surface  Porous 1. SI-BONE Technical Study 300610-TS. Torsional Rigidity of the iFuse Implant Compared with a SI Joint Screw in a Sawbones Model. 2. SI-BONE Report. Strength of materials of the SI-BONE iFuse Implant vs. 8.0 mm Cannulated Screw. Mauldin RG. December 2009. 3. SI-BONE Corporate Records. Complaing Handling & Post-market Surveillance. December 2022. 4. Whang P, et al. Int J Spine Surg. 2023 Oct 5:8543. 5. Cher DJ, et al. Med Devices (Auckl). 2015;8:485-92. 6. www.si-bone.com/results 7. MacBarb RF, et al. Int J Spine Surg. 2017;11:16 (Part 2). REPRESENTATIVE COMPETITOR TPS-COATED iFUSE CANCELLOUS BONE 3D-PRINTED iFuse 3D 3 MONTH SHEEP STUDY 7 ► Proven triangular design and procedure ► Porous, 3D-printed titanium implant ► Bony on-growth, in-growth, and through-growth7 14

Robust Clinical Evidence • 125+ peer-reviewed published papers • 5-year long-term, prospective data • Two Level 1 randomized studies 15 www.si-bone.com/results

16 SALLY Prospective Clinical Trial: iFuse-3D 2-year Outcomes1 Rapid, marked and durable improvements in pain, patient function and quality of life VAS Pain Reduction ODI Disability Improvement Decreased Opioid Use 57-point improvement (MCID 20 points) 25-point improvement (MCID 15 points) 59% at baseline vs. 18% at follow-up Patient Satisfaction 91% satisfied / very satisfied at follow-up Months after SIJ fusion Months after SIJ fusion Equivalence to iFuse 2 ✓ Demonstrated Objective Functional Improvement 3 Accelerated SI Joint Fusion 4 ✓ Important improvement ✓ 100% bone integration and 77% bone bridging at 12 months All Trial Goals Met 1. Patel V, et al. Prospective Trial of Sacroiliac Joint Fusion Using 3D-Printed Triangular Titanium Implants: 24-Month Follow-Up. Med Devices (Auckl). 2021;14:211-16. (Published June 29, 2021). [51 subjects enrolled and treated between October 2017 and January 2019. 24-month follow-up was obtained in 43 (84%)] 2. Similar results to RCTs (INSITE and iMIA) and Prospective trial SIFI. 3. Three tests (active straight leg raise, 5x sit-to-stand, transitional timed up-and-go) 4. CT at 6 and 12 months [Patel V, et al. Med Devices (Auckl). 2022;13:173-82.]

17 iFuse TORQ®: Cutting-Edge Pelvic Fixation and Fusion Large, Adjacent Market 1 FuSIon 3D Surface for Osseointegration Differentiated Technology TORQLock Threads2 10x rotational resistance on insertion vs. trauma screws Competitive Advantages ~$350 million Pelvic Trauma opportunity 1. Based on internal estimates. 2. Internal clinical reports. Data on file. ~$40 million revenue synergy opportunity IntelliHarvest® Technology self harvests host bone Compression Lag Implant and washer ~120K Sacral Fragility fracture incidence / yr.

18 iFuse Bedrock Granite®: Optimized for Fusion and Fixation Large, Adjacent Market ~$1 billion Adult Spinal Deformity and Degenerative Spine pelvic fixation opportunity1 Competitive Advantages Breakthrough Device Designation by the FDA Expanded Rod Combability allows use with wide variety of pedicle screw systems Up to $9,828 New Technology Add-On Payment (NTAP) 2 1. Based on management estimate of total addressable market for existing and potential products in 2024. 2. In August 2022, the Center for Medicare and Medicaid Services issued a final decision for a New Technology Add-on Payment of up to $9,828 for eligible cases using iFuse Bedrock Granite OMNICapture Tulip & Set Screw EZDrive® TipMicroporous Lattice Surfaces IntelliHarvest® Cutting Flutes Macroporous Fenestrations Differentiated Technology

Expand Access to Solutions Accelerate market expansion Increase Surgeon Engagement Drive surgeon penetration and adoption Expand Addressable Markets Build differentiated portfolio Long-Term Business Drivers Platform Set-up to Deliver Strong Revenue Growth and Operating Leverage 19 1. Adjusted EBITDA defined as Earnings Before Interest, Taxes, Depreciation, Amortization and Stock Based Compensation. Gain Operational Efficiency Achieve Adjusted EBITDA breakeven over time (1) Selectively expand sales force headcount Deploy hybrid case coverage solutions Leverage training and comprehensive portfolio to drive active surgeon growth Expand residents and fellows academic training programs Accelerate penetration of iFuse Bedrock Granite in adult deformity and degeneration market Build pelvic trauma market with TORQ Increase territory productive Expand and optimize surgical capacity to support growth >$3B Opportunity Breakthrough Products Differentiated Health Economics Scalable Infrastructure Strong Liquidity

20 Differentiated Portfolio Complemented By Strong Fundamentals Robust Data Reimbursement Advantage Proven Execution Track Record Large, Underpenetrated Markets ▪ 125+ published papers ▪ 2 randomized controlled trials ▪ >300 million U.S. covered lives ▪ NTAP for iFuse Bedrock Granite ▪ ~30% worldwide y/y revenue growth in FY2023 ▪ 12 consecutive quarters of double-digit U.S. active surgeon base growth ▪ 470,000 annual target procedures, for a total annual opportunity > $3 billion ▪ <10% SI joint fusion market penetrated Strong Balance Sheet ▪ ~$166 million in estimated cash and equivalents Note: As of January 8, 2024 Note: The fourth quarter and full year 2023 revenue and cash and marketable securities included in this release are preliminary and prior to the completion of SI-BONE's financial closing procedures and audit procedures by its external auditors and therefore may be subject to adjustment. SI-BONE expects to provide fourth quarter and full year 2023 financial results during its fourth quarter 2023 earnings call in February 2024.

1/5/2024 Pioneering Sacropelvic Solutions 21 >95,000 Procedures >3,600 Surgeons >300M U.S. Covered Lives Note: As of January 8,2024

Disclosure The iFuse Bedrock Granite® Implant System is intended for sacroiliac joint fusion for the following conditions: • Sacroiliac joint dysfunction that is a direct result of sacroiliac joint disruption and degenerative sacroiliitis. This includes conditions whose symptoms began during pregnancy or in the peripartum period and have persisted postpartum for more than 6 months. • To augment immobilization and stabilization of the sacroiliac joint in skeletally mature patients undergoing sacropelvic fixation as part of a lumbar or thoracolumbar fusion. • Acute, non-acute, and non-traumatic fractures involving the sacroiliac joint. When connected to compatible pedicle screw systems with 5.5- or 6.0-mm posterior rods made from either titanium alloy or cobalt chore alloy the iFuse Bedrock Granite Implant System is intended to provide immobilization and stabilization of spinal segments in skeletally mature patien ts as an adjunct to thoracolumbosacral fusion for the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine: • Degenerative disc disease (DDD) as defined by back pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies • Spondylolisthesis • Trauma (i.e., fracture or dislocation) • Spinal stenosis • Deformities or curvatures (i.e., scoliosis, kyphosis, and/or lordosis) • Spinal tumor • Pseudarthrosis • Failed previous fusion Please refer to the additional information section in the Instructions for Use on compatible pedicle screw system rods. The iFuse Bedrock Granite Navigation instruments are intended to be used with the iFuse Bedrock Granite Implant System to ass ist the surgeon in precisely locating anatomical structures in iFuse Bedrock Granite Implant System procedures, in which the use of stereotactic surgery m ay be appropriate, and where reference to a rigid anatomical structure, such as the pelvis or vertebra, can be identified relative to the acquired image (CT,MR, 2D fluoroscopic image or 3D fluoroscopic image reconstruction) and/or an image data based model of the anatomy. iFuse Bedrock Granite Navigation instrume nts are intended to be used with the Medtronic® StealthStation® System. 22 Disclosures

Disclosure The iFuse Implant System® is intended for sacroiliac fusion for the following conditions: • Sacroiliac joint dysfunction that is a direct result of sacroiliac joint disruption and degenerative sacroiliitis. This includes conditions whose symptoms began during pregnancy or in the peripartum period and have persisted postpartumfor more than 6 months. • To augment immobilization and stabilization of the sacroiliac joint in skeletally mature patients undergoing sacropelvic fixation as part of a lumbar or thoracolumbar fusion. • Acute, non-acute, and non-traumatic fractures involving the sacroiliac joint. If present, a pelvic fracture should be stabilized prior to the use of iFuse implants. The iFuse TORQ® Implant System is indicated for: • Fusion of the sacroiliac joint for sacroiliac joint dysfunction including sacroiliac joint disruption and degenerative sacroiliitis. • Fracture fixation of the pelvis, including acute, non-acute and non-traumatic fractures. The iFuse TORQ Implant System is also indicated for fracture fixation of the pelvis, including acute, non -acute, and non-traumatic fractures. The iFuse TORQ Navigation instruments are intended to be used with the iFuse TORQ Implant System to assist the surgeon in pre cisely locating anatomical structures in iFuse TORQ Implant System procedures, in which the use of stereotactic surgery may be appropriate, and where re ference to a rigid anatomical structure, such as the pelvis or vertebra, can be identified relative to the acquired image (CT, MR, 2D fluoroscopic image or 3D fluoroscopic image reconstruction) and/or an image data based model of the anatomy. iFuse TORQ Navigation instruments are intended to be used with the Medtronic ® StealthStation® System. Healthcare professionals please refer to the Instructions For Use for indications, contraindications, warnings, and precauti ons at www.si-bone.com/label. There are potential risks associated with iFuse procedures. They may not be appropriate for all patients and all patients may not benefit. For information about the risks, visit: www.si-bone.com/risks. 23 Disclosures SI-BONE, iFuse Implant System, iFuse Technology, Bedrock, iFuse Bedrock Granite, iFuse TORQ, iFuse Bone, EZDrive, Sacropelvic Solutions, and IntelliHarvest are registered trademarks of SI-BONE, Inc. iFuse 3D, SI-BONE SImulator, FuSIon 3D, and TORQLock are trademarks of SI-BONE, Inc. © 2024 SI-BONE, Inc. All rights reserv ed.

Cover	Jan. 08, 2024
Cover [Abstract]
Document Type	8-K
Document Period End Date	Jan. 08, 2024
Entity Registrant Name	SI-BONE, INC.
Entity Incorporation, State or Country Code	DE
Entity File Number	001-38701
Entity Tax Identification Number	26-2216351
Entity Address, Address Line One	471 El Camino Real
Entity Address, Address Line Two	Suite 101
Entity Address, City or Town	Santa Clara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95050
City Area Code	408
Local Phone Number	207-0700
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	SIBN
Security Exchange Name	NASDAQ
Entity Emerging Growth Company	false
Entity Central Index Key	0001459839
Amendment Flag	false