SI-BONE (NASDAQ: SIBN) Cuts Quarterly Loss as Revenue Climbs 15.2%
SI-BONE reported higher revenue and a smaller loss for the quarter ended June 30, 2026. Revenue was $56.0 million, up from $48.6 million a year earlier, driven primarily by a $6.8 million increase in U.S. revenue and a 14.9% increase in procedure volumes. Gross margin was 79.5%, compared with 79.8% a year earlier, with the company citing product mix.
For the first six months of 2026, revenue was $108.6 million, up 13.2% from $95.9 million, while net loss was $8.4 million, compared with $12.7 million. Operating cash use was $1.6 million, compared with $4.7 million in the prior-year period. Cash and marketable securities were $145.9 million as of June 30, 2026, and outstanding debt was $35.6 million.
The company said over 150,000 procedures had been performed using its technologies since initial commercialization. It also entered a 102-month San Jose office lease covering 50,485 square feet, with monthly base rent of $128,737 after the first six months and up to $3.8 million of landlord reimbursement for qualifying tenant improvements.
Positive
- None.
Negative
- None.
Filing Explained
The CEO adopted a plan covering up to 492,961 potential share sales through August 31, 2027; this filing reports no completed sale.
Form 10-Q is an unaudited quarterly report; in this filing, SI-BONE reports that its CEO adopted a Rule 10b5-1 arrangement on
The arrangement is in the adoption stage, not a reported completed sale, so it establishes a future trading framework rather than an issuance of new company shares.
A Rule 10b5-1 plan is a written trading plan adopted in advance to execute trades on a schedule or formula; the filing states the adoption date, not the reasons for individual trades.
The covered shares include up to 192,884 shares held by a trust and up to 300,077 shares tied to performance-based restricted stock units, which may vest and be released only if their performance conditions are met; the actual number sold is not yet determinable.
Separately, the company says a Department of Justice civil investigative demand concerning meals and consulting payments to health care professionals remains unresolved; no accrual has been recorded as of
The stated checkpoints are the plan’s
Key Figures
Quarterly revenue: $56,010 (in thousands)
Six-month revenue: $108,598 (in thousands)
Quarterly net loss: $(4,088) (in thousands)
+5 more
8 metrics
Quarterly revenue
$56,010 (in thousands)
Three months ended June 30, 2026; $48,630 in 2025; 15.2% increase
Six-month revenue
$108,598 (in thousands)
Six months ended June 30, 2026; $95,920 in 2025; 13.2% increase
Quarterly net loss
$(4,088) (in thousands)
Three months ended June 30, 2026; $(6,152) in 2025
Six-month net loss
$(8,422) (in thousands)
Six months ended June 30, 2026; $(12,694) in 2025
Gross margin
79.5%
Three months ended June 30, 2026; 79.8% in 2025
Cash and marketable securities
$145.9 million
As of June 30, 2026; $147.8 million as of December 31, 2025
Outstanding debt
$35.6 million
As of June 30, 2026 and December 31, 2025
San Jose office lease
50,485 square feet
102-month lease entered in February 2026 with monthly base rent of $128,737
Key Terms
available-for-sale, civil investigative demand, Rule 10b5-1 trading arrangement, ambulatory surgical center, +2 more
6 terms
available-for-sale financial
"All of the Company's marketable securities were available-for-sale"
A classification for bonds, stocks or other investments that a company plans to keep but might sell before they reach full term. Think of it like items a shop keeps on a shelf for potential sale: their market value can go up or down while the company holds them, and those unrealized gains or losses are shown separately from operating profit until they are sold. Investors watch this because large swings can change a company’s reported net worth and signal how much flexibility it has to raise cash quickly.
civil investigative demand regulatory
"the Company received a civil investigative demand (“CID”) from the U.S. Department of Justice"
Rule 10b5-1 trading arrangement regulatory
"adopted, modified or terminated a “Rule 10b5-1 trading arrangement”"
ambulatory surgical center medical
"procedures were performed in ambulatory surgical center (“ASC”) and office-based lab"
An ambulatory surgical center is a licensed medical facility that performs surgical and diagnostic procedures that do not require an overnight hospital stay, like a specialized day clinic focused on same‑day care. For investors it matters because these centers often lower costs and turnaround times compared with hospitals, creating steady revenue streams tied to procedure volume, reimbursement rates and regulatory approvals—similar to a focused service shop in a larger healthcare market.
performance-based restricted stock unit awards financial
"performance-based restricted stock unit awards (“PSUs”) previously granted"
Fourth Amended Loan Agreement financial
"The Fourth Amended Loan Agreement includes affirmative and negative covenants"
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FAQ
How did SI-BONE (SIBN) perform in the quarter ended June 30, 2026?
SI-BONE reported $56.0 million of revenue and a $4.1 million net loss. Revenue rose 15.2% from $48.6 million, mainly from U.S. revenue growth, higher procedure volumes, increased sales-channel coverage, and continued ASC and OBL growth.
What were SI-BONE's (SIBN) six-month 2026 results?
Six-month revenue was $108.6 million, up 13.2% from $95.9 million. SI-BONE reported a $8.4 million net loss for the period, compared with a $12.7 million net loss for the six months ended June 30, 2025.
How much cash and debt did SI-BONE (SIBN) have at June 30, 2026?
SI-BONE had $145.9 million in cash and marketable securities at June 30, 2026. Outstanding debt was $35.6 million, and the company said existing cash and marketable securities would fund operating expenses and capital expenditure requirements over the next 12 months.
What happened to SI-BONE's (SIBN) gross margin and operating expenses?
Gross margin was 79.5% for the quarter, compared with 79.8% a year earlier. Total operating expenses were $49.4 million, up 7.7%, led by higher sales and marketing costs and research and development spending.
What did SI-BONE (SIBN) say about the DOJ civil investigative demand?
SI-BONE says it received a civil investigative demand in October 2024 from the DOJ Civil Division. The request primarily relates to meals and consulting service payments to health care professionals; SI-BONE says it is cooperating and recorded no accrual as of June 30, 2026.
Did SI-BONE (SIBN) disclose any Rule 10b5-1 trading arrangement?
CEO Laura A. Francis adopted a Rule 10b5-1 trading arrangement on May 21, 2026. The plan covers up to 492,961 shares of common stock to be sold, with an expiration date of August 31, 2027.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
(Mark one)
For the quarterly period ended June 30, 2026
OR
For the transition period from __________ to __________
Commission File Number: 001-38701
(Exact Name of Registrant as Specified in its Charter)
| (State or Other Jurisdiction of Incorporation or Organization) | (I.R.S. Employer Identification Number) | |||||||
| (Address of principal executive offices) | (Zip Code) | |||||||
Registrant's telephone number, including area code: (408 ) 207-0700
Securities registered pursuant to Section 12(b) of the Act:
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered | ||||||
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
| ☒ | Accelerated filer | ☐ | Non-accelerated filer | ☐ | |||||||||||||||||||
| Smaller reporting company | 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 7(a)(2)(B) of the Securities Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No x
The number of shares outstanding of the registrant’s Common Stock was 44,818,575 as of July 29, 2026.
TABLE OF CONTENTS
| Page | |||||||||||
| PART I-FINANCIAL INFORMATION | |||||||||||
Item 1. | Financial Statements | 4 | |||||||||
Condensed Consolidated Balance Sheets (Unaudited) | 4 | ||||||||||
Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) | 5 | ||||||||||
Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) | 6 | ||||||||||
Condensed Consolidated Statements of Cash Flows (Unaudited) | 8 | ||||||||||
Notes to Condensed Consolidated Financial Statements (Unaudited) | 9 | ||||||||||
Item 2. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 21 | |||||||||
Item 3. | Quantitative and Qualitative Disclosures About Market Risk | 29 | |||||||||
Item 4. | Controls and Procedures | 30 | |||||||||
| PART II-OTHER INFORMATION | |||||||||||
Item 1. | Legal Proceedings | 30 | |||||||||
Item 1A. | Risk Factors | 31 | |||||||||
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 31 | |||||||||
Item 3. | Defaults Upon Senior Securities | 31 | |||||||||
Item 4. | Mine Safety Disclosures | 31 | |||||||||
Item 5. | Other Information | 31 | |||||||||
Item 6. | Exhibits | 32 | |||||||||
SIGNATURES | 33 | ||||||||||
1
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
This Quarterly Report on Form 10-Q contains forward-looking statements. All statements other than statements of historical facts contained in this Quarterly Report, including statements regarding our future results of operations and financial position, business strategy, prospective products and product candidates, sales force expansion, physician adoption, reimbursement determinations, clinical trial results, government shutdown, and U.S. Food and Drug Administration ("FDA") approvals, are forward-looking statements.
These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements.
In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential” or “continue” or the negative of these terms or other similar expressions, although not all forward-looking statements contain these identifying words. These forward-looking statements speak only as of the date of this Quarterly Report and are subject to a number of risks, uncertainties and assumptions, including those described under the sections in this Quarterly Report titled “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” These forward-looking statements include, but are not limited to, statements about the following:
•our expectation that a significant portion of our revenues will be derived from sales of similar products addressing the spinopelvic anatomy;
•our ability to develop and commercialize additional revenue opportunities, including new indications for use and new products;
•our ability to retain and grow our sales team, including our third-party sales agents, based on the demand for our products;
•our ability to identify, train, and retain physicians to perform procedures using our products;
•our ability to obtain and maintain favorable coverage and reimbursement determinations from third-party payors;
•our estimates of our market opportunity;
•our expectations regarding the scope of protection from intellectual property rights covering our products;
•developments or disputes concerning our intellectual property or other proprietary rights;
•timing of and results from our clinical trials and other studies;
•marketing clearances and authorization from the FDA and regulators in other jurisdictions and CE Certificates of Conformity from Notified Bodies;
•timing of regulatory filings and feedback;
•competition in the markets we serve;
•our expectations of the reliability and performance of our products;
•our expectations of the benefits of our products to patients, providers, and payors;
•the impact of enacted or proposed tariffs on our business, including the impact on gross margins related to our international product sales and the impact of resulting economic uncertainty on demand for our products;
•factors impacting the supply chains we rely on, including tariffs and the availability of raw materials and skilled labor serving our suppliers, and the cost of these factors of production which may in turn impact the prices we pay for our devices;
•our reliance on a limited number of suppliers, including sole source suppliers, which may impact the availability of instruments and materials;
•our ability to sustain or increase demand for our products;
•our estimates regarding our costs and risks associated with our international operations and expansion;
•our ability to attract and retain key personnel and other employees, including those with specialized skills and experience;
•our expectations regarding acquisitions and strategic operations;
•our ability to access capital markets;
•our ability to fund our working capital requirements;
2
•our compliance with, and the cost of, federal, state, and foreign regulatory requirements;
•the factors that may impact our financial results; and
•anticipated trends and challenges in our business and the markets in which we operate.
Forward-looking statements are based on management’s current expectations, estimates, forecasts, and projections about our business and the industry in which we operate, and management’s beliefs and assumptions are not guarantees of future performance or development and involve known and unknown risks, uncertainties, and other factors that are in some cases beyond our control. As a result, any or all of our forward-looking statements in this report may turn out to be inaccurate. Furthermore, if the forward-looking statements prove to be inaccurate, the inaccuracy may be material. In light of the significant uncertainties in these forward-looking statements, you should not regard these statements as a representation or warranty by us or any other person that we will achieve our objectives and plans in any specified time frame, or at all. In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this Quarterly Report on Form 10-Q, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements.
Factors that may cause actual results to differ materially from current expectations include, among other things, those listed under “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2025, together with any updates in the section titled “Risk Factors” and elsewhere in this Quarterly Report on Form 10-Q. These statements, like all statements in this report, speak only as of their date. We caution investors that our business and financial performance are subject to substantial risks and uncertainties. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.
3
PART I-FINANCIAL INFORMATION
Item 1. Financial Statements
SI-BONE, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands, except share and per share amounts)
(Unaudited)
| June 30, 2026 | December 31, 2025 | ||||||||||
ASSETS | |||||||||||
| Current assets: | |||||||||||
| Cash and cash equivalents | $ | $ | |||||||||
| Short-term investments | |||||||||||
Accounts receivable, net of allowance for credit losses of $ | |||||||||||
| Inventory | |||||||||||
| Prepaid expenses and other current assets | |||||||||||
| Total current assets | |||||||||||
| Property and equipment, net | |||||||||||
| Operating lease right-of-use assets | |||||||||||
| Other non-current assets | |||||||||||
| TOTAL ASSETS | $ | $ | |||||||||
LIABILITIES AND STOCKHOLDERS’ EQUITY | |||||||||||
Current liabilities: | |||||||||||
| Accounts payable | $ | $ | |||||||||
| Accrued liabilities and other | |||||||||||
| Operating lease liabilities, current portion | |||||||||||
| Total current liabilities | |||||||||||
| Long-term borrowings | |||||||||||
| Operating lease liabilities, net of current portion | |||||||||||
| TOTAL LIABILITIES | |||||||||||
Commitments and contingencies (Note 6) | |||||||||||
STOCKHOLDERS’ EQUITY | |||||||||||
Preferred stock, $ | |||||||||||
Common stock, $ | |||||||||||
Additional paid-in capital | |||||||||||
Accumulated other comprehensive income | |||||||||||
Accumulated deficit | ( | ( | |||||||||
| TOTAL STOCKHOLDERS’ EQUITY | |||||||||||
| TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY | $ | $ | |||||||||
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
4
SI-BONE, INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
(In thousands, except share and per share amounts)
(Unaudited)
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||||||||||||||
Revenue | $ | $ | $ | $ | |||||||||||||||||||||||||||||||
Cost of goods sold | |||||||||||||||||||||||||||||||||||
| Gross profit | |||||||||||||||||||||||||||||||||||
Operating expenses: | |||||||||||||||||||||||||||||||||||
| Sales and marketing | |||||||||||||||||||||||||||||||||||
| Research and development | |||||||||||||||||||||||||||||||||||
| General and administrative | |||||||||||||||||||||||||||||||||||
Total operating expenses | |||||||||||||||||||||||||||||||||||
Loss from operations | ( | ( | ( | ( | |||||||||||||||||||||||||||||||
Interest and other income (expense), net: | |||||||||||||||||||||||||||||||||||
| Interest income | |||||||||||||||||||||||||||||||||||
| Interest expense | ( | ( | ( | ( | |||||||||||||||||||||||||||||||
| Other income (expense) | ( | ( | ( | ||||||||||||||||||||||||||||||||
Net loss | $ | ( | $ | ( | $ | ( | $ | ( | |||||||||||||||||||||||||||
Other comprehensive income (loss): | |||||||||||||||||||||||||||||||||||
| Changes in foreign currency translation | ( | ( | |||||||||||||||||||||||||||||||||
Unrealized loss on marketable securities | ( | ( | ( | ( | |||||||||||||||||||||||||||||||
Comprehensive loss | $ | ( | $ | ( | $ | ( | $ | ( | |||||||||||||||||||||||||||
Net loss per share, basic and diluted | $ | ( | $ | ( | $ | ( | $ | ( | |||||||||||||||||||||||||||
Weighted-average number of common shares used to compute basic and diluted net loss per share | |||||||||||||||||||||||||||||||||||
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
5
SI-BONE, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
(In thousands, except share amounts)
(Unaudited)
| Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income | Accumulated Deficit | Total Stockholders’ Equity | ||||||||||||||||||||||||||||||||||||||||
| Shares | Amount | |||||||||||||||||||||||||||||||||||||||||||
Balance as of December 31, 2025 | $ | $ | $ | $ | ( | $ | ||||||||||||||||||||||||||||||||||||||
| Issuance of common stock upon exercise of stock options, net of shares withheld | — | — | — | |||||||||||||||||||||||||||||||||||||||||
| Issuance of common stock upon vesting of restricted stock units | — | — | — | — | — | |||||||||||||||||||||||||||||||||||||||
| Stock-based compensation | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||
| Foreign currency translation | — | — | — | ( | — | ( | ||||||||||||||||||||||||||||||||||||||
Net unrealized loss on marketable securities | — | — | — | ( | — | ( | ||||||||||||||||||||||||||||||||||||||
| Net loss | — | — | — | — | ( | ( | ||||||||||||||||||||||||||||||||||||||
Balance as of March 31, 2026 | ( | |||||||||||||||||||||||||||||||||||||||||||
| Issuance of common stock upon exercise of stock options, net of shares withheld | — | — | — | |||||||||||||||||||||||||||||||||||||||||
| Issuance of common stock related to employee stock purchase plan | — | — | — | |||||||||||||||||||||||||||||||||||||||||
| Issuance of common stock upon vesting of restricted stock units | — | — | — | — | — | |||||||||||||||||||||||||||||||||||||||
| Stock-based compensation | — | — | — | — | ||||||||||||||||||||||||||||||||||||||||
| Foreign currency translation | — | — | — | ( | — | ( | ||||||||||||||||||||||||||||||||||||||
Net unrealized loss on marketable securities | — | — | — | ( | — | ( | ||||||||||||||||||||||||||||||||||||||
| Net loss | — | — | — | — | ( | ( | ||||||||||||||||||||||||||||||||||||||
Balance as of June 30, 2026 | $ | $ | $ | $ | ( | $ | ||||||||||||||||||||||||||||||||||||||
6
| Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income | Accumulated Deficit | Total Stockholders’ Equity | ||||||||||||||||||||||||||||||||||
| Shares | Amount | |||||||||||||||||||||||||||||||||||||
Balance as of December 31, 2024 | $ | $ | $ | $ | ( | $ | ||||||||||||||||||||||||||||||||
| Issuance of common stock upon exercise of stock options, net of shares withheld | — | — | — | |||||||||||||||||||||||||||||||||||
| Issuance of common stock upon vesting of restricted stock units | — | — | — | — | — | |||||||||||||||||||||||||||||||||
| Stock-based compensation | — | — | — | — | ||||||||||||||||||||||||||||||||||
| Foreign currency translation | — | — | — | — | ||||||||||||||||||||||||||||||||||
Net unrealized loss on marketable securities | — | — | — | ( | — | ( | ||||||||||||||||||||||||||||||||
| Net loss | — | — | — | — | ( | ( | ||||||||||||||||||||||||||||||||
Balance as of March 31, 2025 | ( | |||||||||||||||||||||||||||||||||||||
| Issuance of common stock upon exercise of stock options, net of shares withheld | — | — | — | |||||||||||||||||||||||||||||||||||
| Issuance of common stock related to employee stock purchase plan | — | |||||||||||||||||||||||||||||||||||||
| Issuance of common stock upon vesting of restricted stock units | — | — | — | — | — | |||||||||||||||||||||||||||||||||
| Stock-based compensation | — | — | — | — | ||||||||||||||||||||||||||||||||||
| Foreign currency translation | — | — | — | — | ||||||||||||||||||||||||||||||||||
Net unrealized loss on marketable securities | — | — | — | ( | — | ( | ||||||||||||||||||||||||||||||||
| Net loss | — | — | — | — | ( | ( | ||||||||||||||||||||||||||||||||
Balance as of June 30, 2025 | $ | $ | $ | $ | ( | $ | ||||||||||||||||||||||||||||||||
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
7
SI-BONE, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
| Six Months Ended June 30, | |||||||||||
| 2026 | 2025 | ||||||||||
Cash flows from operating activities | |||||||||||
Net loss | $ | ( | $ | ( | |||||||
Adjustments to reconcile net loss to net cash used in operating activities: | |||||||||||
| Stock-based compensation | |||||||||||
| Depreciation and amortization | |||||||||||
| Accounts receivable credit losses | |||||||||||
| Amortization of discount and premium on marketable securities | ( | ( | |||||||||
| Inventory reserve | |||||||||||
| Amortization of debt issuance costs | |||||||||||
| Loss on disposal of property and equipment | |||||||||||
Changes in operating assets and liabilities: | |||||||||||
| Accounts receivable | ( | ||||||||||
| Inventory | ( | ( | |||||||||
| Prepaid expenses and other assets | ( | ( | |||||||||
| Accounts payable | |||||||||||
| Accrued liabilities and other | ( | ( | |||||||||
| Net cash used in operating activities | ( | ( | |||||||||
Cash flows from investing activities | |||||||||||
| Maturities of marketable securities | |||||||||||
| Purchases of marketable securities | ( | ( | |||||||||
| Purchases of property and equipment | ( | ( | |||||||||
Net cash (used in) provided by investing activities | ( | ||||||||||
Cash flows from financing activities | |||||||||||
| Proceeds from issuance of common stock under employee stock purchase plan | |||||||||||
| Proceeds from the exercise of stock options | |||||||||||
| Net cash provided by financing activities | |||||||||||
Effect of exchange rate changes on cash and cash equivalents | ( | ||||||||||
| Net decrease in cash and cash equivalents | ( | ( | |||||||||
Cash and cash equivalents at | |||||||||||
Beginning of period | |||||||||||
End of period | $ | $ | |||||||||
Supplemental disclosure of non-cash information | |||||||||||
Unpaid purchases of property and equipment | $ | $ | |||||||||
Right-of-use assets obtained in exchange for new lease liabilities | $ | $ | |||||||||
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
8
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
1. The Company and Nature of Business
SI-BONE, Inc. (the “Company”) was incorporated in the state of Delaware on March 18, 2008 and is headquartered in Santa Clara, California. The Company is 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, the Company has expanded its platform to address adjacent indications, including spinopelvic fixation and pelvic trauma, leveraging its expertise in biomechanical design and anatomy-specific innovation.
Since launching its first generation iFuse in 2009, the Company has launched multiple implant product lines, including iFuse-3D in 2017, iFuse TORQ in 2021, iFuse Bedrock Granite in 2022, iFuse INTRA and iFuse TORQ TNT in 2024, and iFuse INTRA Ti in 2026. In the United States, iFuse, iFuse-3D, iFuse TORQ and iFuse Bedrock Granite have clearances for applications in sacroiliac joint dysfunction, adult spinal deformity and pelvic trauma. iFuse TORQ TNT has clearances for applications in pelvic trauma and sacroiliac joint dysfunction. In Europe, iFuse, iFuse-3D and iFuse TORQ are approved for applications in sacroiliac fusion, adult spinal deformity and pelvic fracture fixation. iFuse TORQ TNT is CE marked for uses similar to those in the US.
9
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
2. Summary of Significant Accounting Policies
Basis of Presentation and Principles of Consolidation
The accompanying condensed consolidated financial statements should be read in conjunction with the audited financial statements and related notes thereto for the year ended December 31, 2025 contained in the Company’s Annual Report on Form 10-K filed with the SEC on February 24, 2026 (the “2025 Annual Report”).
Use of Estimates
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Significant accounting estimates and management judgments reflected in the condensed consolidated financial statements primarily includes the fair value of performance-based restricted stock unit awards. Estimates are based on historical experience, where applicable and other assumptions believed to be reasonable by the management. Actual results could differ from those estimates.
Significant Accounting Policies
The Company’s significant accounting policies are disclosed in the 2025 Annual Report. There have been no material changes to these accounting policies.
Segments
The Company's chief operating decision makers (“CODMs”) are the Chief Executive Officer and Chief Financial Officer. The Company has determined that it has a single operating and reportable segment. The CODMs use revenue and net loss at the consolidated level to measure segment profit and loss, allocate resources, monitor plan versus actual results, and manage operations. Significant expenses within net loss include cost of goods sold, sales and marketing, research and development, and general and administrative at the consolidated level. Other segment items within net loss include interest income, interest expense, and other income (expense), net.
| Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | |||||||||||||||||||||||||||||
| (in thousands) | ||||||||||||||||||||||||||||||||
| United States | $ | $ | $ | $ | ||||||||||||||||||||||||||||
| International | ||||||||||||||||||||||||||||||||
| $ | $ | $ | $ | |||||||||||||||||||||||||||||
Recent Accounting Pronouncements
In December 2025, the FASB issued ASU 2025-12, Codification Improvements (“ASU 2025-12”). ASU 2025-12 provides updates for a broad range of Accounting Topics arising from technical corrections, unintended application of the Codification, clarifications, and other minor improvements. ASU 2025-12 is effective for fiscal years beginning after December 15, 2026 and for interim periods within fiscal years beginning after December 15, 2027. The Company is currently evaluating the impact of ASU 2025-12 on its disclosures.
In November 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270) (“ASU 2025-11”). ASU 2025-11 provides additional guidance on interim disclosure requirements and improves the navigability of the requirements. ASU 2025-11 is effective for fiscal years beginning after December 15, 2028 and for interim periods within fiscal years beginning after December 15, 2029.
10
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
The Company is currently evaluating the impact of ASU 2025-11 on its disclosures.
In September 2025, the FASB issued ASU 2025-06, Goodwill and Other-Internal-Use Software (Subtopic 350-40) - Targeted Improvements to the Accounting for Internal-Use Software (“ASU 2025-06”). ASU 2025-06 makes targeted improvements to the accounting for internal-use software. ASU 2025-06 is effective for fiscal years beginning after December 15, 2027 and for interim periods within fiscal years beginning after December 15, 2027. The Company is currently evaluating the impact of ASU 2025-06 on its accounting for internal developed software and related disclosures.
In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”). ASU 2024-03 requires disclosure in the notes to the financial statements of specified information about certain costs and expenses. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026 and for interim periods within fiscal years beginning after December 15, 2027. ASU 2024-03 should be applied either prospectively to financial statements issued for reporting periods after the effective date of this ASU or retrospectively to any or all prior periods presented in the financial statements. The Company is currently evaluating the impact of ASU 2024-03 on its disclosures.
3. Marketable Securities
All of the Company's marketable securities were available-for-sale and were classified based on their maturities. Marketable securities with remaining maturities at the date of purchase of three months or less are classified as cash equivalents. Short-term investments are securities for which the original maturity is greater than three months or the remaining maturity is not more than twelve months. Long-term investments are securities for which the remaining maturity is greater than twelve months.
The table below summarizes the marketable securities:
| June 30, 2026 | |||||||||||||||||||||||
| Amortized Cost | Unrealized Gains | Unrealized Losses | Aggregate Fair Value | ||||||||||||||||||||
| (in thousands) | |||||||||||||||||||||||
| Money market funds | $ | $ | $ | — | $ | ||||||||||||||||||
| Cash equivalents | — | ||||||||||||||||||||||
| U.S. treasury securities | ( | ||||||||||||||||||||||
| Commercial paper | ( | ||||||||||||||||||||||
| Short-term investments | ( | ||||||||||||||||||||||
| Total marketable securities | $ | $ | $ | ( | $ | ||||||||||||||||||
| December 31, 2025 | |||||||||||||||||||||||
| Amortized Cost | Unrealized Gains | Unrealized Losses | Aggregate Fair Value | ||||||||||||||||||||
| (in thousands) | |||||||||||||||||||||||
| Money market funds | $ | $ | $ | — | $ | ||||||||||||||||||
U.S. treasury securities | — | ||||||||||||||||||||||
| Cash equivalents | — | ||||||||||||||||||||||
| U.S. treasury securities | |||||||||||||||||||||||
| U.S. agency bonds | |||||||||||||||||||||||
| Short-term investments | |||||||||||||||||||||||
| Total marketable securities | $ | $ | $ | $ | |||||||||||||||||||
The amortized cost of the Company's available-for-sale securities approximates their fair value. Unrealized losses are generally due to interest rate fluctuations, as opposed to credit quality. However, the Company reviews individual securities that are in an unrealized loss position in order to evaluate whether or not they have experienced or are expected to experience credit losses. As of June 30, 2026 and December 31, 2025, unrealized gains and losses from the investments were not the result of a decline in credit quality. As a result, the Company did not
11
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
The Company elected to present accrued interest receivable separately from short-term investments on its condensed consolidated balance sheets. Accrued interest receivable was $0.6 million and $0.5 million as of June 30, 2026 and December 31, 2025, respectively, and was recorded in prepaid expenses and other current assets. The Company also elected to exclude accrued interest receivable from the estimation of expected credit losses on its marketable securities and reverse accrued interest receivable through interest income (expense) when amounts are determined to be uncollectible. The Company did not
4. Fair Value Measurement
Carrying amounts of certain of the Company’s financial instruments, including cash equivalents, accounts receivable, accounts payable and accrued liabilities, approximate fair value due to their relatively short maturities and market interest rates, if applicable. The carrying value of the Company’s long-term debt also approximates fair value based on management’s estimation that a current interest rate would not differ materially from the stated rate. The Company’s fair value of the long-term debt fell under the Level 2 hierarchy. There were no other financial assets and liabilities that require fair value hierarchy measurements and disclosures for the periods presented.
The table below summarizes the fair value of the Company’s marketable securities measured at fair value on a recurring basis based on the three-tier fair value hierarchy:
| June 30, 2026 | |||||||||||||||||||||||
| Level 1 | Level 2 | Level 3 | Total | ||||||||||||||||||||
| (in thousands) | |||||||||||||||||||||||
Marketable securities | |||||||||||||||||||||||
| Money market funds | $ | $ | $ | $ | |||||||||||||||||||
| U.S. treasury securities | |||||||||||||||||||||||
| Commercial paper | |||||||||||||||||||||||
| Total marketable securities | $ | $ | $ | $ | |||||||||||||||||||
| December 31, 2025 | |||||||||||||||||||||||
| Level 1 | Level 2 | Level 3 | Total | ||||||||||||||||||||
| (in thousands) | |||||||||||||||||||||||
Marketable securities | |||||||||||||||||||||||
Money market funds | $ | $ | $ | $ | |||||||||||||||||||
| U.S. treasury securities | |||||||||||||||||||||||
| U.S. agency bonds | |||||||||||||||||||||||
| Total marketable securities | $ | $ | $ | $ | |||||||||||||||||||
12
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
5. Balance Sheet Components
Inventory
As of June 30, 2026, inventory consisted of finished goods of $33.8 million and work-in-progress and components of $4.6 million. As of December 31, 2025, inventory consisted of finished goods of $29.9 million and work-in-progress and components of $4.0 million.
Property and Equipment, net:
| June 30, 2026 | December 31, 2025 | ||||||||||
| (in thousands) | |||||||||||
| Instrument trays | $ | $ | |||||||||
| Machinery and equipment | |||||||||||
Construction in progress | |||||||||||
Computer and office equipment | |||||||||||
Leasehold improvements | |||||||||||
Furniture and fixtures | |||||||||||
Less: Accumulated depreciation and amortization | ( | ( | |||||||||
| $ | $ | ||||||||||
As of June 30, 2026, construction in progress pertains to the cost of individual components of an instrument tray used for surgical placement of the Company's products that have not yet been placed into service of $5.7 million and leasehold improvement and office equipment of $1.6 million. As of December 31, 2025, construction in progress pertains to cost of individual components of an instrument tray used for surgical placement of the Company's products that have not yet been placed into service of $5.8 million and software costs of $0.1 million. Depreciation expense was $1.7 million and $1.4 million for the three months ended June 30, 2026 and 2025, respectively. Depreciation expense was $3.3 million and $2.6 million for the six months ended June 30, 2026 and 2025, respectively.
Accrued Liabilities and Other:
| June 30, 2026 | December 31, 2025 | ||||||||||
| (in thousands) | |||||||||||
| Accrued compensation and related expenses | $ | $ | |||||||||
| Accrued royalty | |||||||||||
| Accrued rebates | |||||||||||
Accrued professional services | |||||||||||
| Others | |||||||||||
| $ | $ | ||||||||||
Accounts Receivable and Allowance for Credit Losses:
The movement in the allowance for credit losses was as follows:
| June 30, 2026 | December 31, 2025 | ||||||||||
| (in thousands) | |||||||||||
| Balance at beginning of period | $ | $ | |||||||||
| Provision | |||||||||||
| Write-offs | ( | ( | |||||||||
| Balance at end of period | $ | $ | |||||||||
13
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
6. Commitments and Contingencies
Operating Leases
In February 2026, the Company entered into a lease for 50,485 square feet of office space in San Jose, California, with a lease term of 102 months with one five-year option to extend the term of the lease. The monthly base rent is $128,737 and is subject to annual increases. The Company is not required to pay monthly base rent for the first six months. Under the terms of the lease, the Company expects to receive up to $3.8 million from the landlord as reimbursement for qualifying costs incurred in connection with the Company’s construction of tenant improvements. In the first quarter of 2026, the Company recorded a right-of-use asset of $6.6 million and a lease liability of $6.5 million related to the lease. As of June 30, 2026, lease payments have not yet commenced for the lease.
The Company also has a non-cancelable operating lease for an office building space, located in Santa Clara, California, with an original lease period expiring in May 2025 ("El Camino Lease"). On July 18, 2024, the Company extended the term of the El Camino Lease for an additional period of fourteen months commencing on June 1, 2025 and expiring July 31, 2026. On June 5, 2026, the Company extended the term of the El Camino Lease for an additional period of one month commencing on August 1, 2026 and expiring August 31, 2026 with an option to extend an additional one month to September 30, 2026.
The Company also has non-cancelable leases for a building used for research and development and warehouse space in Santa Clara, California with original lease period expiring in October 2026 ("Owen Lease"). On July 9, 2026, the Company extended the Owen Lease term for a period of two months commencing on November 1, 2026, and expiring December 31, 2026.
The Company also has a lease for office building space in Gallarate, Italy which expires in August 2027.
The Company also leases vehicles under operating lease arrangements for certain of its personnel in Europe which expire at various times throughout 2026 to 2029.
Supplemental information related to lease expense and valuation of the lease assets and lease liabilities are as follows:
14
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| Operating lease expense | $ | $ | $ | $ | |||||||||||||||||||
| Variable lease expense | |||||||||||||||||||||||
| Total lease expense | $ | $ | $ | $ | |||||||||||||||||||
Cash paid for amounts included in the measurement of operating lease liabilities | $ | $ | $ | $ | |||||||||||||||||||
Leased assets obtained in exchange for new operating lease liabilities | $ | $ | $ | $ | |||||||||||||||||||
| June 30, 2026 | December 31, 2025 | ||||||||||||||||||||||
| Weighted average remaining lease term (in years) | |||||||||||||||||||||||
| Weighted average discount rate | |||||||||||||||||||||||
Future minimum lease payments under non-cancelable operating leases as of June 30, 2026 were as follows:
| Year Ending December 31, | (in thousands) | ||||
| Remainder of 2026 | $ | ||||
| 2027 | |||||
| 2028 | |||||
| 2029 | |||||
| 2030 | |||||
| Thereafter | |||||
| Total operating lease payments | |||||
Less: imputed interest and tenant improvement allowance | ( | ||||
| Total operating lease liabilities | $ | ||||
As of June 30, 2026, the Company had no operating lease liabilities that had not commenced.
Purchase Commitments and Obligations
The Company has certain purchase commitments related to its inventory management with certain manufacturing suppliers based on the agreements or blanket purchase orders. The contractual obligations represent future cash commitments and liabilities under agreements with third parties and exclude orders for goods and services entered into in the normal course of business that are not enforceable or legally binding. These outstanding commitments amounted to $4.2 million and $4.3 million as of June 30, 2026 and December 31, 2025, respectively.
Indemnification
The Company enters into standard indemnification arrangements in the ordinary course of business. Pursuant to these arrangements, the Company indemnifies, holds harmless, and agrees to reimburse the indemnified parties for losses suffered or incurred by the indemnified party, in connection with any trade secret, copyright, patent or other intellectual property infringement claim by any third-party with respect to the Company’s technology. The term of these indemnification agreements is generally perpetual. The maximum potential amount of future payments the Company could be required to make under these agreements is not determinable because it involves claims that may be made against the Company in the future, but have not yet been made.
The Company has entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers, other than liabilities arising from willful misconduct of the individual.
The Company has no t incurred costs to defend lawsuits or settle claims related to these indemnification agreements. No liability associated with such indemnifications has been recorded to date.
Legal Contingencies
15
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
In October 2024, the Company received a civil investigative demand (“CID”) from the U.S. Department of Justice, Civil Division, in connection with an investigation under the federal Anti-Kickback Statute and Civil False Claims Act (the “Investigation”). The CID requests information and documents primarily relating to meals and consulting service payments provided to health care professionals. The Company is cooperating with the Investigation but is currently unable to express a view regarding the likely duration, or ultimate outcome, of the Investigation. As of June 30, 2026, the Company has not recorded an accrual related to the Investigation. Depending on how the Investigation progresses, there may be a material impact on the Company’s business, results of operations, or financial condition.
7. Borrowings
Term Loan
The following table summarizes the outstanding borrowings from the term loan as of the periods presented:
| June 30, 2026 | December 31, 2025 | ||||||||||
| (in thousands) | |||||||||||
Principal outstanding | $ | $ | |||||||||
Less: Unamortized debt issuance costs and lender fees | ( | ( | |||||||||
Outstanding debt, net of debt issuance costs and unaccreted value of final payment fee | $ | $ | |||||||||
| Classified as: | |||||||||||
| Long-term borrowings | $ | $ | |||||||||
The outstanding debt is related to a Loan and Security Agreement dated August 12, 2021 (the "Original Loan Agreement") entered into by the Company with Silicon Valley Bank, a California corporation ("SVB"). Pursuant to the Original Loan Agreement, the Company borrowed a term loan in the aggregate principal amount of $35.0 million to the Company (the "Original Term Loan").
On January 6, 2023, the Company entered into a First Amendment to Loan and Security Agreement with SVB to amend our Original Loan Agreement (the "First Amendment" and with the Original Loan Agreement, collectively the "Amended Loan Agreement"). Upon entry into the Amended Loan Agreement, the Company borrowed a new term loan in the aggregate principal amount of $36.0 million (the "First Amendment Term Loan"), which was substantially used to repay in full the $35.0 million Original Term Loan outstanding under the Original Loan Agreement, and we also obtained a secured revolving credit facility in an aggregate principal amount of up to $15.0 million (the "Revolving Line"). The First Amendment also provided for a final payment fee payable to SVB of 2 % of the original principal amount of the First Amendment Term Loan due upon the earlier of the First Amendment Term Loan Maturity Date, termination of the Amended Loan Agreement, acceleration by the Lender following an event of default, or prepayment of the First Amendment Term Loan.
On January 25, 2024, the Company entered into a Second Amendment to Loan and Security Agreement with Silicon Valley Bank, a division of First-Citizens Bank & Trust Company, as successor in interest to SVB ("First Citizens") to further amend our Amended Loan Agreement (the "Second Amendment" and together with the Amended Loan Agreement, collectively, the "Second Amended Loan Agreement"). The Second Amendment revised certain provisions related to financial covenants and the periods in which such covenants applied.
On November 8, 2024, the Company entered into a Third Amendment to the Loan and Security Agreement with First-Citizens to further amend our Second Amended Loan Agreement (the "Third Amendment" and together with the Second Amended Loan Agreement, collectively, the "Third Amended Loan Agreement"). Upon entry into the Third Amended Loan Agreement, we borrowed a new term loan in the aggregate principal amount of $36.0 million (the "Third Amendment Term Loan"), which was substantially used to refinance and repay in full the then-outstanding $36.0 million First Amendment Term Loan. The Company also paid a final payment fee of $0.7 million related to such prior First Amendment Term Loan. The Third Amendment set the maturity date for the Third Amendment Term Loan as September 1, 2029 (the "Third Amendment Term Loan Maturity Date"), and set the first principal repayment due date for the Third Amendment Term Loan to October 1, 2027; which date will, upon the achievement of the Performance Milestone (as defined in the Third Amendment), become October 1, 2028. Interest on the Third Amendment Term Loan will be payable monthly at a floating rate per annum equal to the greater of 4.25 % and the WSJ Prime Rate minus 0.5 %. The Company may elect to prepay the Third Amendment Term Loan in whole prior to the Third Amendment Term Loan Maturity Date, subject to a prepayment fee equal to 1.5 % of the original principal amount of the Third Amendment Term Loan if the loan is prepaid
16
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
within 18 months following the closing of the Third Amendment. The Third Amendment revised certain provisions related to financial covenants and the periods in which such covenants apply.
The Company accounted for the Third Amended Loan Agreement as a debt modification. Accordingly, the remaining unamortized debt issuance costs related to the Second Amended Loan Agreement together with any lender fees incurred in connection with the entry of the Third Amended Loan Agreement are amortized to interest expense using the straight-line method over the new term of the loan through August 2029.
On September 25, 2025, the Company entered into a Fourth Amendment to Loan and Security Agreement with First-Citizens to further amend our Third Amended Loan Agreement (the “Fourth Amendment” and together with the Third Amended Loan Agreement, collectively, the “Fourth Amended Loan Agreement”). The Fourth Amendment revised the periods in which the financial covenants applied.
The effective interest rate for the three and six months ended June 30, 2026 was 6.6 7.3
The table below summarizes the future principal payments under the Fourth Amended Loan Agreement as of June 30, 2026:
| Year ending December 31, | (in thousands) | ||||
| Remainder of 2026 | $ | ||||
| 2027 | |||||
| 2028 | |||||
| 2029 | |||||
| 2030 | |||||
Total principal payments | $ | ||||
The Fourth Amended Loan Agreement includes affirmative and negative covenants applicable to the Company and certain of its foreign subsidiaries. The affirmative covenants include, among others, covenants requiring the Company to maintain its legal existence and governmental compliance, deliver certain financial reports, and maintain insurance coverage. The negative covenants include, among others, restrictions regarding transferring collateral, pledging the Company's intellectual property to other parties, engaging in mergers or acquisitions, paying dividends or making other distributions, incurring indebtedness, transacting with affiliates, and entering into certain investments, in each case subject to certain exceptions. As of June 30, 2026, the Company was in compliance with all debt covenants.
8. Stock-Based Incentive Compensation Plans
Stock Options
The table below summarizes the stock option activity for the six months ended June 30, 2026:
| Number of Shares | Weighted- Average Exercise Price | Weighted-Average Contractual Remaining Life (Years) | Aggregate Intrinsic Value (in thousands) | |||||||||||||||||||||||
| Outstanding as of December 31, 2025 | $ | |||||||||||||||||||||||||
Exercised | ( | $ | ||||||||||||||||||||||||
| Canceled and forfeited | ( | $ | ||||||||||||||||||||||||
| Outstanding as of June 30, 2026 | $ | $ | ||||||||||||||||||||||||
Options vested and exercisable, June 30, 2026 | $ | $ | ||||||||||||||||||||||||
Options vested and expected to vest, June 30, 2026 | $ | $ | ||||||||||||||||||||||||
As of June 30, 2026, there is no unrecognized compensation cost related to stock options.
17
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
There were no
Restricted Stock Units (“RSUs”)
RSUs are share awards that entitle the holder to receive freely tradable shares of the Company’s common stock upon vesting. RSUs generally vest over one to four years based upon continued services and are settled at vesting in shares of the Company's common stock. Certain RSUs vest based upon continued services and the achievement of financial milestones. The grant date fair value of the RSUs is equal to the closing price of the Company’s common stock on the grant date.
The Company granted performance-based restricted stock unit awards subject to market and service vesting conditions to certain executive officers under SI-BONE's 2018 Equity Incentive Plan (“PSUs”). The shares subject to PSUs vest over a three-year performance period. The actual number of PSUs that will vest in each measurement period will be determined by the Compensation Committee based on the Company’s total shareholder return (“TSR”) relative to the TSR of the Median Peer Companies (as defined in the award agreement). The grant date fair value of each stock award with a market condition was determined using the Monte Carlo valuation model. The table below summarizes the assumptions used to estimate the grant date fair value of the PSUs granted:
| Six Months Ended June 30, | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2026 | 2025 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Expected volatility of common stock | to | to | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Expected volatility of peer companies | to | to | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Correlation coefficient of peer companies | ( | to | to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Risk-free interest rate | to | to | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dividend yield | to | to | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The table below summarizes RSU and PSU activity for the six months ended June 30, 2026:
| RSUs | PSUs | |||||||||||||||||||||||||
| Number of Shares | Weighted Average Grant Date Fair Value | Number of Shares | Weighted Average Grant Date Fair Value | |||||||||||||||||||||||
| Outstanding as of December 31, 2025 | $ | $ | ||||||||||||||||||||||||
| Granted | ||||||||||||||||||||||||||
| Vested | ( | ( | ||||||||||||||||||||||||
| Canceled and forfeited | ( | ( | ||||||||||||||||||||||||
| Outstanding as of June 30, 2026 | ||||||||||||||||||||||||||
Employee Stock Purchase Plan
The Company’s 2018 Employee Stock Purchase Plan (the “ESPP”) allows eligible employees to purchase shares of the Company's common stock through payroll deductions at the price equal to 85 % of the lesser of the fair market value of the stock as of the first date or the ending date of each six month offering period. The offering period generally commences in May and November. On March 26, 2020, the Company's Compensation Committee approved the amendment of the terms of future offerings under the ESPP which, among other things, increased the maximum number of shares that may be purchased on any single purchase date, provided for automatic enrollment in a new offering.
The fair value of the ESPP shares is estimated using the Black-Scholes option pricing model, which is being amortized over the requisite service period. As of June 30, 2026 and December 31, 2025, total accumulated ESPP related employee payroll deductions amounted to $0.2 million and $0.3 million, respectively, which were included within accrued compensation and related expenses in the condensed consolidated balance sheets.
Stock-Based Compensation
The table below presents the detail of stock-based compensation expense amounts included in the condensed consolidated statements of operations:
18
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
| Three Months Ended June 30, | Six Months Ended June 30, | |||||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | |||||||||||||||||||||||
| (in thousands) | ||||||||||||||||||||||||||
Cost of goods sold | $ | $ | $ | $ | ||||||||||||||||||||||
Sales and marketing | ||||||||||||||||||||||||||
Research and development | ||||||||||||||||||||||||||
General and administrative | ||||||||||||||||||||||||||
| $ | $ | $ | $ | |||||||||||||||||||||||
Warrants
The table below summarizes common stock warrants activity for the six months ended June 30, 2026:
| Date | Outstanding Balance at | Price per Share | Warrants Issued | Warrant Exercised | Warrant Expired | Outstanding Balance at | ||||||||||||||||||||||||||||||||||||||
| Issuance | Expiration | December 31, 2025 | June 30, 2026 | |||||||||||||||||||||||||||||||||||||||||
| 3/1/2017 | 3/1/2027 | $ | ||||||||||||||||||||||||||||||||||||||||||
| 12/22/2016 | 12/22/2026 | $ | ||||||||||||||||||||||||||||||||||||||||||
9. Net Loss Per Share of Common Stock
The table below summarizes the computation of basic and diluted net loss per share:
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| (in thousands, except share and per share data) | |||||||||||||||||||||||
Net loss | $ | ( | $ | ( | $ | ( | $ | ( | |||||||||||||||
Weighted-average shares used to compute basic and diluted net loss per share | |||||||||||||||||||||||
Net loss per share, basic and diluted | $ | ( | $ | ( | $ | ( | $ | ( | |||||||||||||||
Because the Company has reported a net loss in all periods presented, outstanding stock options, restricted stock units, ESPP purchase rights and common stock warrants are anti-dilutive and therefore diluted net loss per common share is the same as basic net loss per common share for the periods presented. The following anti-dilutive common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented:
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
Stock options | |||||||||||||||||||||||
Restricted stock units | |||||||||||||||||||||||
ESPP purchase rights | |||||||||||||||||||||||
Common stock warrants | |||||||||||||||||||||||
19
SI-BONE, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
10. Income Taxes
In determining quarterly provisions for income taxes, the Company uses the annual estimated effective tax rate applied to the actual year-to-date profit or loss, adjusted for discrete items arising in that quarter. The Company updates its estimate of its annual effective tax rate at the end of each quarterly period. The estimate takes into account annual forecasted income (loss) before income taxes, the geographic mix of income (loss) before income taxes and any significant permanent tax items. The Company did not
The Company accounts for the uncertainty in income taxes by utilizing a comprehensive model for the recognition, measurement, presentation and disclosure in financial statements of any uncertain tax positions that have been taken or are expected to be taken on an income tax return. There had been no changes in the estimated uncertain tax benefits recorded as of June 30, 2026 compared to December 31, 2025.
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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
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•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
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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 expect to continue to make investments in research and development. As such, we anticipate that research and development expenses will continue to increase in the future.
General and Administrative Expenses
General and administrative expenses primarily consist of salaries, stock-based compensation expense, and other costs for finance, accounting, legal, insurance, compliance, and administrative matters.
Interest Income
Interest income is primarily related to our investments of excess cash in money market funds and marketable securities.
Interest Expense
Interest expense is primarily related to borrowings, amortization of debt issuance costs, and accretion of final fees on the First-Citizens Fourth Amended Loan Agreement.
Other Income (Expense), Net
Other income (expense), net consists primarily of net foreign exchange gains and losses on foreign transactions.
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Results of Operations
Comparison of the Three Months Ended June 30, 2026 and 2025
Revenue, Cost of Goods Sold, Gross Profit, and Gross Margin:
| Three Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | $ Change | % Change | ||||||||||||||||||||
| (in thousands, except for percentages) | |||||||||||||||||||||||
| Revenue | $ | 56,010 | $ | 48,630 | $ | 7,380 | 15.2 | % | |||||||||||||||
| Cost of goods sold | 11,462 | 9,823 | 1,639 | 16.7 | % | ||||||||||||||||||
| Gross profit | $ | 44,548 | $ | 38,807 | $ | 5,741 | 14.8 | % | |||||||||||||||
| Gross margin | 79.5 | % | 79.8 | % | |||||||||||||||||||
We derive the majority of our revenue from sales to customers in the U.S. Revenue by geography is based on billing address of the customer. The table below summarizes our revenue by geography:
| Three Months Ended June 30, | ||||||||||||||||||||||||||||||||||||||
| 2026 | 2025 | |||||||||||||||||||||||||||||||||||||
| Amount | % | Amount | % | $ Change | % Change | |||||||||||||||||||||||||||||||||
| (in thousands, except for percentages) | ||||||||||||||||||||||||||||||||||||||
| United States | $ | 53,233 | 95.0 | % | $ | 46,425 | 95.5 | % | $ | 6,808 | 14.7 | % | ||||||||||||||||||||||||||
| International | 2,777 | 5.0 | % | 2,205 | 4.5 | % | 572 | 25.9 | % | |||||||||||||||||||||||||||||
| $ | 56,010 | 100.0 | % | $ | 48,630 | 100.0 | % | $ | 7,380 | 15.2 | % | |||||||||||||||||||||||||||
Revenue. The increase in revenue for the three months ended June 30, 2026 as compared to the three months ended June 30, 2025 was primarily driven by a $6.8 million increase in U.S. revenue due to 14.9% increase in procedure volumes, increased sales channel coverage, and continued growth in ASC and OBL settings.
Gross Profit and Gross Margin. Gross profit increased $5.7 million for the three months ended June 30, 2026 as compared to the three months ended June 30, 2025, mainly driven by higher revenue. The gross margin was 79.5% for the three months ended June 30, 2026 compared to a gross margin of 79.8% for the three months ended June 30, 2025 due to changes in product mix.
Operating Expenses:
| Three Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | $ Change | % Change | ||||||||||||||||||||
(in thousands, except for percentages) | |||||||||||||||||||||||
Sales and marketing | $ | 34,024 | $ | 30,781 | $ | 3,243 | 10.5 | % | |||||||||||||||
Research and development | 5,221 | 4,309 | 912 | 21.2 | % | ||||||||||||||||||
General and administrative | 10,109 | 10,721 | (612) | (5.7) | % | ||||||||||||||||||
Total operating expenses | $ | 49,354 | $ | 45,811 | $ | 3,543 | 7.7 | % | |||||||||||||||
Sales and Marketing Expenses. The increase in sales and marketing expenses for the three months ended June 30, 2026 as compared to the three months ended June 30, 2025 was primarily due to a $2.5 million increase in commissions and personnel cost driven by higher revenues and increase in headcount, and a $1.1 million increase related to travel, training and marketing activities, partially offset by a decrease of $0.4 million related to stock-based compensation.
Research and Development Expenses. The increase in research and development expenses for the three months ended June 30, 2026 as compared to the three months ended June 30, 2025 was primarily due to a $0.9 million increase in next generation product development activities, clinical and regulatory initiatives.
General and Administrative Expenses. The decrease in general and administrative expenses for the three months ended June 30, 2026 compared to the three months ended June 30, 2025 was primarily due to a $0.3 million decrease in personnel costs and stock-based compensation and a $0.3 million decrease in professional service costs.
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Interest and Other Income (Expense), Net:
| Three Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | $ Change | % Change | ||||||||||||||||||||
| (in thousands, except for percentages) | |||||||||||||||||||||||
Interest income | $ | 1,332 | $ | 1,520 | $ | (188) | (12.4) | % | |||||||||||||||
Interest expense | (598) | (666) | 68 | (10.2) | % | ||||||||||||||||||
Other income (expense), net | (16) | (2) | (14) | 700.0 | % | ||||||||||||||||||
Total interest and other expense, net | $ | 718 | $ | 852 | $ | (134) | (15.7) | % | |||||||||||||||
Interest Income. The decrease in interest income for the three months ended June 30, 2026 as compared to the three months ended June 30, 2025 was primarily due to lower interest rate earned on our investments in marketable securities, primarily as a result of lower interest rates.
Interest Expense. The decrease in interest expense for the three months ended June 30, 2026 as compared to the three months ended June 30, 2025 was due to lower interest rates associated with the First-Citizens Fourth Amended Loan Agreement.
Other Income (Expense), Net. The change in other income (expense), net for the three months ended June 30, 2026 as compared to the three months ended June 30, 2025 was primarily due to foreign currency fluctuations.
Comparison of the Six Months Ended June 30, 2026 and 2025
Revenue, Cost of Goods Sold, Gross Profit, and Gross Margin:
| Six Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | $ Change | % Change | ||||||||||||||||||||
| (in thousands, except for percentages) | |||||||||||||||||||||||
| Revenue | $ | 108,598 | $ | 95,920 | $ | 12,678 | 13.2 | % | |||||||||||||||
| Cost of goods sold | 22,106 | 19,418 | 2,688 | 13.8 | % | ||||||||||||||||||
| Gross profit | $ | 86,492 | $ | 76,502 | $ | 9,990 | 13.1 | % | |||||||||||||||
| Gross margin | 79.6 | % | 79.8 | % | |||||||||||||||||||
We derive the majority of our revenue from sales to customers in the U.S. Revenue by geography is based on billing address of the customer. The table below summarizes our revenue by geography:
| Six Months Ended June 30, | ||||||||||||||||||||||||||||||||||||||
| 2026 | 2025 | |||||||||||||||||||||||||||||||||||||
| Amount | % | Amount | % | $ Change | % Change | |||||||||||||||||||||||||||||||||
| (in thousands, except for percentages) | ||||||||||||||||||||||||||||||||||||||
United States | $ | 102,535 | 94.4 | % | $ | 91,261 | 95.1 | % | $ | 11,274 | 12.4 | % | ||||||||||||||||||||||||||
International | 6,063 | 5.6 | % | 4,659 | 4.9 | % | 1,404 | 30.1 | % | |||||||||||||||||||||||||||||
| $ | 108,598 | 100.0 | % | $ | 95,920 | 100.0 | % | $ | 12,678 | 13.2 | % | |||||||||||||||||||||||||||
Revenue. The increase in revenue for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025 was primarily driven by an $11.3 million increase in U.S. revenue driven by 12.3% increase in procedure volumes, supported by expanded adoption of our product portfolio, increased sales channel coverage, and continued growth in ASC and OBL settings.
Gross Profit and Gross Margin. Gross profit increased $10.0 million for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025, mainly driven by higher revenue. The gross margin was 79.6% for the six months ended June 30, 2026 as compared to 79.8% for the six months ended June 30, 2025. Gross margin change in the six months ended June 30, 2026 as compared to the six months ended June 30, 2025, was primarily due to changes in product mix.
Operating Expenses:
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| Six Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | $ Change | % Change | ||||||||||||||||||||
(in thousands, except for percentages) | |||||||||||||||||||||||
Sales and marketing | $ | 66,832 | $ | 61,462 | $ | 5,370 | 8.7 | % | |||||||||||||||
Research and development | 9,413 | 8,843 | 570 | 6.4 | % | ||||||||||||||||||
General and administrative | 20,146 | 20,681 | (535) | (2.6) | % | ||||||||||||||||||
Total operating expenses | $ | 96,391 | $ | 90,986 | $ | 5,405 | 5.9 | % | |||||||||||||||
Sales and Marketing Expenses. The increase in sales and marketing expenses for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025 was primarily due to a $3.3 million increase in commissions and personnel costs driven by higher revenues, a $2.7 million increase in travel, training and marketing activities, partially offset by a decrease of $0.8 million related to stock-based compensation.
Research and Development Expenses. The increase in research and development expenses for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025 was primarily due to $0.6 million increase in next generation product development activities, clinical and regulatory initiatives.
General and Administrative Expenses. The decrease in general and administrative expenses for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025 was primarily due to a $0.9 million decrease in professional service costs, partially offset by $0.4 million increase in personnel costs and stock-based compensation.
Interest and Other Income (Expense), Net:
| Six Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | $ Change | % Change | ||||||||||||||||||||
| (in thousands, except for percentages) | |||||||||||||||||||||||
| Interest income | $ | 2,682 | $ | 3,112 | $ | (430) | (13.8) | % | |||||||||||||||
| Interest expense | (1,190) | (1,328) | 138 | 10.4 | % | ||||||||||||||||||
| Other income (expense), net | (15) | 6 | (21) | 350.0 | % | ||||||||||||||||||
| Total interest and other expense, net | $ | 1,477 | $ | 1,790 | $ | (313) | (17.5) | % | |||||||||||||||
Interest Income. The decrease in interest income for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025 was primarily due to lower interest earned on our investments in marketable securities, primarily as a result of lower interest rates.
Interest Expense. The decrease in interest expense for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025 was primarily due to lower interest rates associated with the First-Citizens Fourth Amended Loan Agreement.
Other Income (Expense), Net. The change in other income (expense), net for the six months ended June 30, 2026 as compared to the six months ended June 30, 2025 was primarily due to foreign currency fluctuations.
Liquidity and Capital Resources
As of June 30, 2026, we had cash and marketable securities of $145.9 million as compared to $147.8 million as of December 31, 2025. We have financed our operations primarily through the sale of our common stock in our public offerings and debt financing arrangements. As of both June 30, 2026 and December 31, 2025, we had $35.6 million in outstanding debt.
As of June 30, 2026, we had an accumulated deficit of $458.7 million as compared to $450.3 million as of December 31, 2025. During the six months ended June 30, 2026, we incurred a net loss of $8.4 million. During the years ended December 31, 2025 and 2024, we incurred a net loss of $18.9 million and $30.9 million, respectively, and expect to incur additional losses in the future. We have not achieved positive cash flow from operations for the six months ended June 30, 2026.
Based upon our current operating plan and improved cash flow from operations, we believe that our existing cash and marketable securities will enable us to fund our operating expenses and capital expenditure requirements over the next 12 months from the filing of this Form 10-Q. However, the financial impact of a potential economic downturn or capital market disruptions pose risks to uncertainties in our future available capital resources. We may face challenges and uncertainties and, as a result, may need to raise additional capital as our available capital resources may be consumed more rapidly than currently expected due to, but not limited to (a) decreases in sales of our products and the uncertainty of future revenues from new products; (b) changes we may make to the business that affect ongoing operating expenses; (c) changes we may make in our business strategy; (d) regulatory and reimbursement developments affecting our existing products; (e) changes we may make in our research and development spending plans; and (f) other items affecting our forecasted level of expenditures and use of cash resources. In addition, as we seek to deploy new product offerings,
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the need for additional capital to fund the purchase of inventories of implants and instrument trays may become more acute and may limit the number of revenue opportunities that we pursue. Each new product family introduced typically requires the purchase of consumable implant inventory as well as investment in a fleet of instrument trays required to support procedures nationwide.
Term Loan
Our outstanding debt is related to a Loan and Security Agreement (the "Original Loan Agreement") dated August 12, 2021 (the "Effective Date"), entered into by us and Silicon Valley Bank, a California corporation ("SVB"). Pursuant to the Original Loan Agreement, we borrowed a term loan in the aggregate principal amount of $35.0 million (the "Original Term Loan").
On January 6, 2023, we entered into a First Amendment to Loan and Security Agreement with SVB to amend our Original Loan Agreement (the "First Amendment" and together with the Original Loan Agreement, collectively the "Amended Loan Agreement"). Upon entry into the Amended Loan Agreement, we borrowed a new term loan in the aggregate principal amount of $36.0 million (the "First Amendment Term Loan"), which was substantially used to repay in full the $35.0 million Original Term Loan outstanding under the Original Loan Agreement, and we also obtained a secured revolving credit facility in an aggregate principal amount of up to $15.0 million (the "Revolving Line"). The First Amendment also provided for a final payment fee payable to SVB of 2% of the original principal amount of the First Amendment Term Loan due upon the earlier of the First Amendment Term Loan Maturity Date, termination of the Amended Loan Agreement, acceleration by the Lender following an event of default, or prepayment of the First Amendment Term Loan.
On January 25, 2024, we entered into a Second Amendment to Loan and Security Agreement with Silicon Valley Bank, a division of First-Citizens Bank & Trust Company, as successor in interest to SVB ("First-Citizens") to further amend our Amended Loan Agreement (the "Second Amendment" and together with the Amended Loan Agreement, collectively, the "Second Amended Loan Agreement"). The Second Amendment revised certain provisions related to financial covenants and the periods in which such covenants applied.
On November 8, 2024, we entered into a Third Amendment to Loan and Security Agreement with First-Citizens to further amend our Second Amended Loan Agreement (the "Third Amendment" and together with the Second Amended Loan Agreement, collectively, the "Third Amended Loan Agreement"). Upon entry into the Third Amended Loan Agreement, we borrowed a new term loan in the aggregate principal amount of $36.0 million (the “Third Amendment Term Loan”), which was substantially used to refinance and repay in full the then-outstanding $36.0 million First Amendment Term Loan. We also paid a certain final payment fee related to such prior First Amendment Term Loan. The Third Amendment set the maturity date for the Third Amendment Term Loan to September 1, 2029 (the "Third Amendment Term Loan Maturity Date"), and set the first principal repayment due date for the Third Amendment Term Loan to October 1, 2027, which date will, upon the achievement of the Performance Milestone (as defined in the Third Amendment) become October 1, 2028. Interest on the outstanding principal balance of the Third Amendment Term Loan is payable monthly at a floating rate per annum equal to the greater of 4.25% and the WSJ prime rate minus 0.5%. The Company may elect to prepay the Third Amendment Term Loan in whole prior to the Third Amendment Term Loan Maturity Date, subject to a prepayment fee equal to 1.5% of the original principal amount of the Third Amendment Term Loan if the loan is prepaid within 18 months following the closing of the Third Amendment. The Third Amendment revised certain provisions related to financial covenants and the periods in which such covenants apply, and First-Citizens and the Company also agreed to terminate the Revolving Line and an uncommitted accordion term loan provision.
On September 25, 2025, we entered into a Fourth Amendment to Loan and Security Agreement with First-Citizens to further amend our Third Amended Loan Agreement (the “Fourth Amendment” and together with the Third Amended Loan Agreement, collectively, the “Fourth Amended Loan Agreement”). The Fourth Amendment revised the periods in which the financial covenants applied.
Cash requirement
Our material cash requirements include various contractual and other obligations consisting of long-term debt obligations with First-Citizens, purchase obligations with some of our suppliers and have not changed materially since the Form 10-K filed with the SEC on February 24, 2026. In February 2026, we entered into an operating lease for an office building in San Jose, California. As of June 30, 2026, expected timing of those payments are as follows:
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| Payments Due By Period | |||||||||||||||||||||||||||||
| Total | Less than 1 year | 1-3 years | 4-5 years | More than 5 years | |||||||||||||||||||||||||
| (in thousands) | |||||||||||||||||||||||||||||
Principal obligations (1) | $ | 36,000 | $ | — | $ | 24,000 | $ | 12,000 | $ | — | |||||||||||||||||||
Interest obligations (2) | 5,047 | 1,150 | 3,614 | 283 | — | ||||||||||||||||||||||||
Operating lease obligations (3) | 14,419 | 372 | 2,870 | 3,361 | 7,816 | ||||||||||||||||||||||||
| Purchase obligations | 4,204 | 4,204 | — | — | — | ||||||||||||||||||||||||
| Total | $ | 59,670 | $ | 5,726 | $ | 30,484 | $ | 15,644 | $ | 7,816 | |||||||||||||||||||
(1)Represents the principal obligations of our First-Citizens Fourth Amended Loan Agreement.
(2)Represents the future interest obligations on our First-Citizens Fourth Amended Loan Agreement estimated using an interest rate of 6.25% as of June 30, 2026.
(3)Consists of future non-cancelable rent payments under operating lease obligations, excluding expected tenant improvement allowance of $3.8 million related to our San Jose office lease.
This compares to $47.7 million of contractual obligations as of December 31, 2025.
Cash Flows
The following table sets forth the primary sources and uses of cash for each of the periods presented below:
| Six Months Ended June 30, | |||||||||||||||||||||||
| 2026 | 2025 | $ Change | |||||||||||||||||||||
Net cash provided by (used in): | (in thousands) | ||||||||||||||||||||||
Operating activities | $ | (1,585) | $ | (4,738) | $ | 3,153 | |||||||||||||||||
Investing activities | (8,970) | 1,159 | (10,129) | ||||||||||||||||||||
Financing activities | 1,662 | 2,336 | (674) | ||||||||||||||||||||
Effects of exchange rate changes on cash and cash equivalents | (219) | 445 | (664) | ||||||||||||||||||||
Net decrease in cash and cash equivalents | $ | (9,112) | $ | (798) | $ | (8,314) | |||||||||||||||||
Cash Used in Operating Activities
During the six months ended June 30, 2026, net cash used in operating activities was $1.6 million, consisting of a net loss of $8.4 million and an increase in net operating assets of $8.5 million, partially offset by non-cash charges of $15.4 million. During the six months ended June 30, 2025, net cash used in operating activities was $4.7 million, consisting of a net loss of $12.7 million and an increase in net operating assets of $8.7 million, partially offset by non-cash charges of $16.6 million.
Significant changes in net operating assets during the six months ended June 30, 2026 included higher inventory levels to support new product introductions, higher accounts receivable due to timing of sales and cash collections, and lower accrued liabilities and higher accounts payable balance due to the timing of payments. Non-cash charges consisted primarily of stock-based compensation and depreciation.
Cash Used in Investing Activities
Net cash used in investing activities in the six months ended June 30, 2026 was $9.0 million as compared to cash provided by investing activities of $1.2 million in the six months ended June 30, 2025. Net cash used in investing activities for the six months ended June 30, 2026 consisted of a $6.3 million cash outflow from purchase of our marketable securities net of maturities, and $2.6 million purchases of property and equipment primarily related to individual components in instrument sets to support revenue growth and leasehold improvement assets for our new corporate office. Net cash provided by investing activities for the six months ended June 30, 2025 consisted of a $5.3 million cash inflow from maturities of our marketable securities net of purchases, and $4.2 million purchases of property and equipment primarily related to individual components in instrument sets to support revenue growth.
Cash Provided by Financing Activities
Cash provided by financing activities in the six months ended June 30, 2026 and 2025 was $1.7 million and $2.3 million, respectively, resulting from the issuance of common stock under our stock-based incentive compensation plans.
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Critical Accounting Policies, Significant Judgments, and Use of Estimates
This discussion and analysis of our financial condition and results of operations is based on our condensed consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these condensed consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, as well as the reported revenue generated, and expenses incurred during the reporting periods. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.
Our critical accounting policies and estimates are described in “Management's Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Policies, Significant Judgments, and Use of Estimates” in our 2025 Annual Report. There had been no material changes to the descriptions of these accounting policies, judgments and estimates.
Seasonality
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. However, taken as a whole, seasonality does not have a material impact on our financial results.
Item 3. Quantitative and Qualitative Disclosures about Market Risk
We are exposed to market risks, including changes to foreign currency exchange rates and interest rates.
Foreign Currency Exchange Risk
We have foreign currency risks related to our revenue and operating expenses denominated in currencies other than the U.S. dollar, primarily the Euro. Accordingly, changes in exchange rates, and in particular a strengthening of the U.S. dollar, have in the past, and may in the future, negatively affect our revenue and other operating results as expressed in U.S. dollars.
We have experienced and will continue to experience fluctuations in net loss as a result of transaction gains or losses related to remeasuring certain current asset and current liability balances denominated in currencies other than the functional currency of the entities in which they are recorded. At this time, we have not entered into, but in the future we may enter into, derivatives or other financial instruments in an attempt to hedge our foreign currency exchange risk. It is difficult to predict the effect hedging activities would have on our results of operations. Foreign currency gains or losses, net recognized in the three and six months ended June 30, 2026 and 2025 were not material. A hypothetical 100 basis point change in foreign exchange rates during any of the periods presented would not have had a material impact on our condensed consolidated financial statements.
Interest Rate Risk
Our exposure to changes in interest rates relates to interest earned and market value on our cash and cash equivalents and short-term investments. Our cash and cash equivalents and short-term investments consist of cash, money market funds, U.S. government securities, and commercial paper. The market value of our marketable securities may decline if current market interest rates rise. Our investment policy and strategy are focused on preservation of capital and supporting our liquidity requirements. We do not make investments for trading or speculative purposes.
With the execution of the Third Amendment with First-Citizens relative to the Third Amendment Term Loan, interest is payable monthly at a floating annual rate set at the greater of the prime rate as published in the Wall Street Journal minus 0.5% or 4.25%. Rising interest rates will increase the amount of interest paid on this debt. We believe that our exposure to interest rate risk is not significant due to the low risk profile of our investments and the amount of our Fourth Amended Loan Agreement, therefore a hypothetical 100 basis point change in market interest rates during any of the periods presented would not have had a material impact on our condensed consolidated financial statements.
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Item 4. Controls and Procedures
Evaluation of Disclosure Controls and Procedures
We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Securities and Exchange Act of 1934 is (i) recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and (ii) accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.
Internal control over financial reporting has inherent limitations. Internal control over financial reporting is a process that involves human diligence and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Internal control over financial reporting also can be circumvented by collusion or improper management override. Because of such limitations, there is a risk that material misstatements will not be prevented or detected on a timely basis by internal control over financial reporting. However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk.
As of June 30, 2026, our management, with the participation of our Chief Executive Officer (“CEO”) and our Chief Financial Officer (“CFO”), have evaluated our disclosure controls and procedures (as defined in Rules 13a‑15(e) and 15d‑15(e) under the Securities Exchange Act of 1934). Based on that evaluation, our CEO and our CFO have concluded that, as of June 30, 2026, our disclosure controls and procedures were effective at the reasonable assurance level.
Changes in internal control over financial reporting
During the quarter ended June 30, 2026, there were no changes in our internal controls over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
PART II—OTHER INFORMATION
Item 1. Legal Proceedings
The information regarding legal proceedings set forth under “Legal Contingencies” in Note 6, Commitments and Contingencies, to our unaudited condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q is incorporated herein by reference.
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Item 1A. Risk Factors
There have been no material changes from the risk factors previously disclosed in Part I, Item 1A. “Risk Factors” of our 2025 Annual Report. The risk factors described in our 2025 Annual Report, as well as other information set forth in this Quarterly Report on Form 10-Q, could materially adversely affect our business, financial condition, results of operations and prospects, and should be carefully considered. The risks and uncertainties that we face, however, are not limited to those described in the 2025 Annual Report. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial may also adversely affect our business and the trading price of our securities.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
None.
Item 3. Defaults Upon Senior Securities
None.
Item 4. Mine Safety Disclosures
Not Applicable.
Item 5. Other Information
Trading Plans
During the fiscal quarter ended June 30, 2026, the following officer (as defined in Rule 16a-1(f) under the Exchange Act) adopted , modified or terminated
| Type of Trading Arrangement | |||||||||||||||||||||||||||||
Name and Position | Action | Adoption/Termination Date | Rule 10b5-1* | Non-Rule 10b5-1** | Total Shares of Common Stock to be Sold | Total Shares of Common Stock to be Purchased | Expiration Date | ||||||||||||||||||||||
X | (1) | ||||||||||||||||||||||||||||
*Contract, instruction or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act | |||||||||||||||||||||||||||||
| ** “Non-Rule 10b5-1 trading arrangement” as defined in Item 408(c) of Regulation S-K under the Exchange Act. | |||||||||||||||||||||||||||||
(1) (a) up to 192,884 shares of common stock held by The David & Laura Joint Rev Tr; (b) up to 300,077 shares of common stock subject to performance-based restricted stock unit awards (“PSUs”) previously granted to Ms. Francis that may vest and be released to her on or before August 15, 2027 upon satisfaction of the applicable performance-based vesting conditions, to be reduced by the shares sold to satisfy tax withholding obligations arising from the vesting of such PSUs. The actual number of shares of common stock that may vest and be released to Ms. Francis upon satisfaction of the applicable performance-based vesting conditions pursuant to the PSUs is not yet determinable. Moreover, the actual number of shares that will be sold pursuant to the Rule 10b5-1 trading arrangement is not yet determinable.
None of the Company’s other directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) adopted, modified or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement, as defined in Item 408 of Regulation S-K under the Exchange Act during the three-month period ended June 30, 2026.
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Item 6. Exhibits
| Incorporation By Reference | ||||||||||||||||||||||||||||||||
| Exhibit Number | Description | Form | SEC File No. | Exhibit/ Reference | Filing Date | |||||||||||||||||||||||||||
| 3.1 | Amended and Restated Certificate of Incorporation. | 8-K | 001-38701 | 3.1 | 10/19/2018 | |||||||||||||||||||||||||||
| 3.2 | Second Amended and Restated Bylaws. | 8-K | 001-38701 | 3.1 | 9/20/2023 | |||||||||||||||||||||||||||
| 3.3 | Amendment to Amended and Restated Certificate of Incorporation. | 8-K | 001-38701 | 3.1 | 6/26/2024 | |||||||||||||||||||||||||||
| 4.1 | Form of Common Stock Certificate of the Company. | S-1/A | 333-227445 | 4.1 | 10/5/2018 | |||||||||||||||||||||||||||
| 4.2 | Reference is made to Exhibits 3.1, 3.2, and 3.3 | |||||||||||||||||||||||||||||||
10.1# | Third Amendment to Lease, dated June 5, 2026, between SI-BONE, Inc. and BIXBY SPE FINANCE 11, LLC | 8-K | 001-38701 | 10.1 | 6/8/2026 | |||||||||||||||||||||||||||
| 31.1* | Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. | |||||||||||||||||||||||||||||||
| 31.2* | Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. | |||||||||||||||||||||||||||||||
| 32.1** | Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. | |||||||||||||||||||||||||||||||
| 101.INS* | Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. | |||||||||||||||||||||||||||||||
| 101.SCH* | Inline XBRL Taxonomy Extension Schema Document. | |||||||||||||||||||||||||||||||
| 101.CAL* | Inline XBRL Taxonomy Extension Calculation Linkbase Document. | |||||||||||||||||||||||||||||||
| 101.DEF* | Inline XBRL Taxonomy Extension Definition Linkbase Document. | |||||||||||||||||||||||||||||||
| 101.LAB* | Inline XBRL Taxonomy Extension Label Linkbase Document. | |||||||||||||||||||||||||||||||
| 101.PRE* | Inline XBRL Taxonomy Extension Presentation Linkbase Document. | |||||||||||||||||||||||||||||||
| 104 | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) | |||||||||||||||||||||||||||||||
* Filed herewith.
** Furnished herewith. Exhibit 32.1 is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, nor shall such exhibit be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise specifically stated in such filing.
# The Company has omitted portions of the referenced exhibit pursuant to Item 601(b) of Regulation S-K because it (a) is not material and (b) the type of information that the Registrant both customarily and actually treats as private or confidential.
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SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized, in Santa Clara, California, on August 4, 2026.
| SI-BONE, Inc. | |||||||||||
| Date: | August 4, 2026 | By: | /s/ Laura A. Francis | ||||||||
Laura A. Francis | |||||||||||
| Chief Executive Officer | |||||||||||
(Duly Authorized Officer and Principal Executive Officer) | |||||||||||
| SI-BONE, Inc. | |||||||||||
| Date: | August 4, 2026 | By: | /s/ Anshul Maheshwari | ||||||||
Anshul Maheshwari | |||||||||||
Chief Operating Officer & Chief Financial Officer | |||||||||||
| (Duly Authorized Officer and Principal Financial and Accounting Officer) | |||||||||||