SI-BONE, Inc. (SIBN)

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our condensed consolidated financial statements and the related notes to those statements included elsewhere in this Quarterly Report on Form 10-Q, and with the consolidated financial statements and management’s discussion and analysis of our financial condition and results of operations in our Annual Report on Form 10-K filed with the SEC on February 24, 2026. Some of the information contained in this discussion and analysis, or set forth elsewhere in this Quarterly Report on Form 10-Q, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties. As a result of many important factors, including those set forth in the “Risk Factors” section of our Annual Report on Form 10-K filed on February 24, 2026, our actual results could differ materially from the results described in, or implied, by these forward-looking statements.

Overview

We are a leader in developing and commercializing differentiated solutions targeting surgical and interventional procedures for patients with compromised bone. Since building solutions targeting the sacroiliac joint, we have expanded our platform to address adjacent indications, including spinopelvic fixation and pelvic trauma, leveraging our expertise in biomechanical design and anatomy-specific innovation.

We market our products primarily with a direct sales force as well as a number of third-party sales agents in the United States, and with a combination of a direct sales force and sales agents in other countries. As of June 30, 2026, over 150,000 procedures have been performed using our technologies since initial commercialization.

Factors Affecting Results of Operations and Key Performance Indicators

We monitor certain key performance indicators that we believe provide us and our investors indications of conditions that may affect results of our operations. Our revenue growth rate, commercial progress and profitability are impacted by, among other things, our key performance indicators, including our ability to expand access to solutions, increase physician penetration, launch new products, address human capital needs and gain operational efficiencies.

Introduce Solutions Addressing New Markets

We believe we are the industry leader in pioneering anatomy-specific solutions that are grounded in our biomechanical design expertise and backed by strong clinical evidence. Our product development strategy focuses on addressing unmet clinical needs while leveraging our existing platform technologies, enabling us to expand physician adoption and increase procedure volumes over time. As pioneers of minimally invasive treatment for sacroiliac joint dysfunction and degeneration, we developed a deep competency in addressing the challenges of low-density bone in the sacrum. Over the years, we have expanded our platform of solutions to address spinopelvic fixation and pelvic trauma. Our focus on innovation has resulted in three of our platform technologies being designated as breakthrough devices by the FDA.

We continue to invest in research and development initiatives to bring new and differentiated solutions to the market. Robust clinical evidence is central to drive adoption and favorable reimbursement, and we remain focused on continuing to set the industry standard in delivering evidence-based care through best-in-class clinical trials that demonstrate the efficacy, safety, and economic benefit of our solutions. During the six months ended June 30, 2026, we spent $9.4 million on research and development, equating to 8.7% of our revenue. During the six months ended June 30, 2025, we spent $8.8 million on research and development, equating to 9.2% of our revenue.

Expand Access to Solutions

Our commercial growth is driven by expansion of our sales organization, increased surgical capacity, and broader site-of-service adoption. As of June 30, 2026, our U.S. commercial organization comprised of more than 175 sales team members, including territory sales managers and clinical support specialists, and more than 350 third-party sales agents. As of June 30, 2025, our U.S. commercial organization comprised of more than 160 sales team members, including territory sales managers and clinical support specialists, and 295 third-party sales agents.

As of June 30, 2026, our international commercial organization included 10 direct sales representatives and 31 third-party sales agents and resellers, compared to 10 direct sales representatives and 29 third- party sales agents and resellers as of June 30, 2025.

Our expanded platform allows us to serve our physicians across all sites of care. Over 35 percent of U.S. sacroiliac joint procedures were performed in ambulatory surgical center (“ASC”) and office-based lab (“OBL”) settings during the quarter.

Engage and Educate Physicians

Physician adoption and utilization are key drivers of our revenue growth. We focus on:

•increasing the number of active physicians performing our procedures;

•improving time to first case following training; and

21

•increasing procedures per active physician.

Our training programs include hands-on cadaveric sessions, simulator-based training, and structured onboarding programs designed to accelerate adoption and improve procedural efficiency. In addition to training new physicians and working with our existing physician customers to grow their use of our products, we have several initiatives to re-engage inactive physicians.

Enhance Employee Experience and Engagement

Our ability to recruit and retain skilled personnel, particularly within our commercial organization, is a significant determinant of our success. We continue to focus on maintaining a competitive compensation structure and supporting sales force productivity and retention.

In addition to ensuring equitable compensation for our employees, we maintain a strong focus on enhancing employee retention and job satisfaction. To achieve this, we have established a feedback mechanism to continually monitor and respond to employee sentiment. Using this feedback, we deploy strategies that enhance the skills of our people managers and improve internal communications with employees. Furthermore, we provide ongoing learning and leadership training opportunities to support professional growth.

We conduct instructor-led trainings designed to build people leadership capabilities and train managers on delivering actionable feedback. We have also adopted a goal for each of our managers to have regular check-ins with employees to discuss their personal goals and career plans in furtherance of our commitment to career and professional development.

Gain Operational Efficiency

To support the growing demand for our solutions, we continue to focus on operational efficiency, including increasing sales force productivity, and optimizing utilization of our instrument trays.

We are focused on increasing our territory sales managers’ capacity, efficiency and productivity. We may do this by adding more clinical support specialists and third-party sales agents as part of hybrid arrangements for case coverage, and by consigning instrument trays and implants at selective sites of service. As of June 30, 2026, our trailing twelve month average revenue per territory sales manager has increased to approximately $2.2 million from $2.1 million as of June 30, 2025.

We have made significant investments in instrument trays and implants to support procedural growth. We continue to focus on improving capital efficiency through optimized inventory management and maximize our asset utilization by having our instrument trays used in more surgeries in any given time period. We routinely work with our suppliers to improve supply chain efficiency, lower manufacturing costs and reduce our cash investment in inventory.

Components of Results of Operations

Revenue

Our revenue from sales of implants fluctuates based on volume of cases (procedures performed), discounts, mix of international and U.S. sales, different implant pricing and the number of implants used for a particular patient. Similar to other orthopedic companies, our case volume can vary from quarter to quarter due to a variety of factors including reimbursement, sales force changes, physician activities, product launches, and seasonality. In addition, our revenue is impacted by changes in average selling price as we respond to the competitive landscape and price differences at different medical facilities, such as hospitals, ASCs and OBLs. Revenue results can also vary based upon the mix of business between U.S. and international sales mix of our products used, and the sales channel through which each procedure is supported. Our revenue from international sales is impacted by fluctuations in foreign currency exchange rates between the U.S. dollar (our reporting currency) and the local currency.

Our business is affected by seasonal variations. For instance, we have historically experienced lower sales in the summer months and higher sales in the last quarter of the fiscal year as patients have more time in the winter months to have the procedure completed or want to take advantage of their annual limits on deductibles, co-payments and other out-of-pocket payments specified in their insurance plans. However, taken as a whole, seasonality does not have a material impact on our financial results from year to year.

Cost of Goods Sold, Gross Profit, and Gross Margin

We utilize third-party manufacturers for production of our implants and instrument trays. Cost of goods sold consists primarily of costs of the components of implants and instruments, instrument tray depreciation, royalties, scrap and inventory obsolescence, as well as distribution-related expenses such as logistics and shipping costs. Our cost of goods sold has historically increased as case levels increase and from changes in our product mix.

Operating Expenses

22

Our operating expenses consist of sales and marketing, research and development, and general and administrative expenses. Personnel costs are the most significant component of operating expenses and consist of salaries, sales commissions and other cash and stock-based compensation related expenses. We intend to make investments to execute our strategic plans and operational initiatives. We anticipate certain operating expenses will continue to increase to support our growth.

Sales and Marketing Expenses

Sales and marketing expenses primarily consist of salaries, stock-based compensation expense, and other compensation related costs, for personnel employed in sales, marketing, medical affairs, reimbursement and professional education departments. In addition, our sales and marketing expenses include commissions and bonuses, generally based on a percentage of sales, as well as certain commission guarantees paid to our senior sales management, territory sales managers, clinical support specialists and third-party sales agents.

Research and Development Expenses

Our research and development expenses primarily consist of engineering, product development, clinical and regulatory expenses (including clinical study expenses), consulting services, outside prototyping services, outside research activities, materials, depreciation, and other costs associated with development of our products. Research and development expenses also include related personnel compensation and stock-based compensation expense. We expense research and development costs as they are incurred.

Research and development expenses for engineering projects fluctuate with project timing. Based upon our broader set of product development initiatives and the stage of the underlying projects, we

[Excerpt truncated for page length; source filing is linked above.]

Overview

We are a leader in developing innovative procedural solutions for compromised bone, grounded in expertise in biomechanical design and anatomy-specific innovation. As pioneers of minimally invasive treatment for sacroiliac joint dysfunction and degeneration, we developed a deep competency in addressing the challenges of low-density bone in the sacrum. With our additive manufacturing, or 3D-printing, experience developed in sacroiliac fusion, we have established a technology platform that now extends to meet critical unmet needs in thoracolumbar fixation and fusion and pelvic trauma.

We market our products primarily with a direct sales force as well as a number of third-party sales agents in the United States, and with a combination of a direct sales force and sales agents in other countries. As of December 31, 2025, more than 140,000 procedures have been performed since we introduced iFuse in 2009.

Factors Affecting Results of Operations and Key Performance Indicators

We monitor certain key performance indicators that we believe provide us and our investors indications of conditions that may affect results of our operations. Our revenue growth rate and commercial progress is impacted by, among other things, our key performance indicators, including our ability to expand access to solutions, increase physician penetration, launch new products, address human capital needs and gain operational efficiencies.

Introduce Solutions Addressing New Markets

We believe we are the industry leader in pioneering anatomy-specific solutions that are grounded in our biomechanical design expertise and backed by strong clinical evidence. As pioneers of minimally invasive treatment for sacroiliac joint dysfunction and degeneration, we developed a deep competency in addressing the challenges of low-density bone in the sacrum. Over the years, we have expanded our platform of solutions to address spinopelvic fixation and pelvic trauma. Our focus on innovation has resulted in three of our platform technologies being designated as breakthrough devices by the FDA.

We continue to focus on the development of products and techniques to help physicians improve the treatment of their patients with compromised bone. We continue to invest in research and development initiatives to bring new and differentiated solutions to the market that deliver on our vision of improving patient quality of life through differentiated solutions to target new segments with a clear unmet clinical need. Robust clinical evidence is central to drive adoption and favorable reimbursement, and we remain focused on continuing to set the industry standard in delivering evidence-based care through best-in-class clinical trials that demonstrate the efficacy, safety, and economic benefit of our solutions. In 2025, we spent $17.4 million on research and development, equating to 9% of our 2025 revenue.

Expand Access to Solutions

As we expand our portfolio, the experience, caliber, and strong clinician relationships of our sales force, including our network of third-party sales agents, will be crucial to drive adoption of our future products and procedures. Since our initial public offering in 2018, we have made significant investments in our commercial infrastructure to build a valuable sales team to expand the market, drive physician engagement and deliver revenue growth.

64

While we will continue to selectively expand our sales force, we are also focused on increasing our sales managers' capacity and driving sales force productivity by adding more clinical support specialists and implementing hybrid models, including selectively adding third-party sales agents for case coverage, and by placing instrument trays and implants at select sites of service. This expansion of our sales force is one aspect of increasing the overall number of procedures in a given period that we can support with products, which is what we call “surgical capacity.” Our surgical capacity is also limited by the volume of implant inventory and the number of instrument trays held ready for surgery, either at our headquarters facility, forward deployed with our sales force or placed at customer facilities. As we grow, and as adoption of our solutions continues to mature, our overall surgical capacity may become an important driver of the amount of revenue that we can generate.

As of December 31, 2025, our U.S. sales force consisted of 89 territory sales managers and 83 clinical support specialists directly employed by us and 320 third-party sales agents, compared to 87 territory sales managers and 71 clinical support specialists directly employed by us and 252 third-party sales agents as of December 31, 2024. As of December 31, 2025, our international sales force consisted of 11 sales representatives directly employed by us and 28 third-party sales agents and resellers, compared to 9 sales representatives directly employed by us and 31 third-party sales agents and resellers as of December 31, 2024.

For fiscal year ended December 31, 2025, over 33% of our procedures for sacroiliac joint dysfunction were performed at ASCs and OBLs. With the steady increase in the numbers of minimally invasive procedures, including sacroiliac joint fusion procedures, being performed at ASCs, we continue to actively engage with these facilities to educate their management groups on our clinical evidence, exclusive commercial payor coverage and focus on driving improved education and pathways between pain physicians and surgeons.

Engage and Educate Physicians

Engaging and educating physician and other healthcare professionals about the clinical merits and patient benefits of our solutions is important to growing physician adoption and utilization of our solutions. Our medical affairs team works closely with our sales team to increase physician engagement and activation. Physician activity includes both the number of physicians performing our procedures as well as the number of procedures performed per physician. In addition to training new physicians and working with our existing physician customers to grow their use of our products, we have several initiatives to re-engage inactive physicians.

We utilize a combination of hands-on cadaveric and dry-lab training, as well as SI-BONE SImulator - a portable, radiation-free, haptics and computer-based simulator - for training purposes, and optimize our programs to improve adoption rate, time to first case and ultimately physician productivity.

Enhance Employee Experience and Engagement

Our ability to recruit, develop and retain highly skilled talent is a significant determinant of our success. To attract, retain, and develop our talent, we seek to create a diverse and inclusive workplace with opportunities for our employees to thrive and advance in their careers. We support this with market-competitive compensation, comprehensive benefits, and health and well-being programs.

In addition to ensuring workforce diversity and equitable compensation for our employees, we maintain a strong focus on enhancing employee retention and job satisfaction. To achieve this, we have established a feedback mechanism to continually monitor and respond to employee sentiment. Using this feedback, we deploy strategies that enhance the skills of our people managers and improve internal communications with employees. Furthermore, we provide ongoing learning and leadership training opportunities to support professional growth.

In 2025, we conducted instructor-led trainings designed to build people leadership capabilities and train managers on delivering actionable feedback. We have also adopted a goal for each of our managers to have regular check-ins with employees to discuss their personal goals and career plans in furtherance of our commitment to career and professional development.

Gain Operational Efficiency

To support our growing portfolio of solutions, we continue to evolve our business processes to identify, measure and improve operational efficiency. The information developed will allow us to optimize processes, increase sales force productivity and improve asset utilization.

We are focused on increasing our territory sales managers and sales representatives capacity, efficiency and productivity. We may do this by adding more clinical support specialists and third-party sales agents as part of hybrid arrangements for case coverage, and by consigning instrument trays and implants at selective sites of service. Our average revenue per territory sales manager has increased to approximately $2.1 million in fiscal year 2025, from $1.8 million in fiscal year 2024.

65

We have made significant investments in instrument trays used to perform surgeries. Our goal is to deploy instrument trays to the market where the demand exists to increase our asset utilization rates over time and use capital more effectively by having our instrument trays used in more surgeries in any given time period. Given supply chain disruptions impacting the industry, we are working closely with our suppliers to reduce lead time for our implants to ensure we can support our expanding physician footprint and over time build the resilience in our supply chain to reduce our cash investment in inventory. Additionally, we are partnering with our suppliers around design for manufacturing, specifically for newer products, to reduce the overall cost of the implants as we scale, and reduce waste and rework. Lastly, we are integrating our demand planning and manufacturing systems, to ensure we leverage actual usage trends as we build surgical capacity to support our growth.

66

Components of Results of Operations

Revenue

Our revenue from sales of implants fluctuates based on volume of cases (procedures performed), discounts, mix of international and U.S. sales, different implant pricing and the number of implants used for a particular patient. Similar to other orthopedic companies, our case volume can vary from quarter to quarter due to a variety of factors including reimbursement, sales force changes, physician activities, product launches, and seasonality. In addition, our revenue is impacted by changes in average selling price as we respond to the competitive landscape and price differences at different medical facilities, such as hospitals, ASCs and OBLs. Further, revenue results can differ based upon the mix of business between U.S. and international sales mix of our products used, and the sales channel through which each procedure is supported. Our revenue from international sales is impacted by fluctuations in foreign currency exchange rates between the U.S. dollar (our reporting currency) and the local currency.

Our business is affected by seasonal variations. For instance, we have historically experienced lower sales in the summer months and higher sales in the last quarter of the fiscal year as patients have more time in the winter months to have the procedure completed or want to take advantage of their annual limits on deductibles, co-payments and other out-of-pocket payments specified in their insurance plans. However, taken as a whole, seasonality does not have a material impact on our financial results from year to year.

Cost of Goods Sold, Gross Profit, and Gross Margin

We utilize third-party manufacturers for production of our implants and instrument trays. Cost of goods sold consists primarily of costs of the components of implants and instruments, instrument tray depreciation, royalties, scrap and inventory obsolescence, as well as distribution-related expenses such as logistics and shipping costs. Our cost of goods sold has historically increased as case levels increase and from changes in our product mix.

Operating Expenses

Our operating expenses consist of sales and marketing, research and development, and general and administrative expenses. Personnel costs are the most significant component of operating expenses and consist of salaries,

[Excerpt truncated for page length; the complete text is on the linked full-MD&A page.]