Washington, D.C. 20549


Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): May 3, 2021
(Exact name of registrant as specified in its charter)
Delaware 001-38701 26-2216351
(State or other jurisdiction of
incorporation or organization)
File Number)
 (I.R.S. Employer
Identification No.)

471 El Camino Real
Suite 101
Santa Clara, CA 95050
(Address of principal executive offices) (Zip Code)

(408) 207-0700
(Registrant’s telephone number, include area code)

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

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

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

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

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

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

Securities registered pursuant to Section 12(b) of the Act:
Title of each class Trading Symbol(s) Name of each exchange on which registered
Common Stock, par value $0.0001 per shareSIBNThe Nasdaq Global Market

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

Emerging growth company     

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

Item 2.02 – Results of Operations and Financial Condition.

On May 3, 2021, SI-BONE, Inc. (the "Company") issued a press release (the “Press Release”) announcing results for the quarter ended March 31, 2021. A copy of the Press Release is attached as Exhibit 99.1 to this current report on Form 8-K and is incorporated by reference herein.

The information under Item 2.02 in this current report on Form 8-K and the related information in the exhibit attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits
Exhibit No. Description
104Cover Page Interactive Date File (embedded within the Inline XBRL document)


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

Date:May 3, 2021By:/s/ Anshul Maheshwari
   Anshul Maheshwari
Chief Financial Officer
   (Principal Financial and Accounting Officer)


Exhibit 99.1
SI-BONE, Inc. Reports First Quarter 2021 Financial Results and Reiterates 2021 Financial Guidance

SANTA CLARA, Calif. May 3, 2021 - SI-BONE, Inc. (Nasdaq:SIBN), a medical device company dedicated to solving musculoskeletal disorders of the sacropelvic anatomy, today reported financial results for the quarter ended March 31, 2021.

Recent Highlights
Worldwide revenue of $20.4 million for the first quarter 2021, representing a 22% increase over the corresponding period in 2020
U.S. revenue of $18.8 million for the first quarter 2021, representing a 23% increase over the corresponding period in 2020
Launched iFuse-TORQ, a highly differentiated 3D-printed threaded implant, for pelvic trauma and minimally invasive sacroiliac joint fusion applications
Completed the senior leadership team transition with Laura Francis as CEO, Jeff Dunn as Executive Chairman, and Tony Recupero as President
Welcomed Anshul Maheshwari, former Varian VP Finance, Treasurer, and Head of Investor Relations, as CFO
Appointed Laura Francis and Helen Loh to the Board of Directors

“I'm proud of the strong execution of our team, despite persistent COVID headwinds,” said Laura Francis, Chief Executive Officer of SI-BONE. “Our new leadership team is positioned to accelerate the capture of the multi-billion-dollar market opportunity in the sacropelvic space. With the recent U.S. launch of iFuse-TORQ, we will now be able to address a significant unmet need for patients with pelvic trauma as well as sacroiliac joint dysfunction and degeneration. I want to thank our team for their hard work and persistence as they have fought through the pandemic to put us in this strong position.”

First Quarter 2021 Financial Results

Worldwide revenue was $20.4 million in the first quarter 2021, a 22% increase from $16.8 million in the corresponding period in 2020. U.S. revenue for the first quarter 2021 was $18.8 million, a 23% increase from $15.3 million in the corresponding period in 2020. International revenue for the first quarter 2021 was $1.7 million, a 10% increase from $1.5 million in the corresponding period in 2020.

Gross margin was 89% for the first quarter 2021, as compared to 89% in the corresponding period in 2020. Higher cost of operations to support the growth of the business were offset by lower inventory write-downs.

Operating expenses increased 11% to $29.8 million in the first quarter 2021, as compared to $26.8 million in the corresponding period in 2020. The increase was driven by higher sales and marketing expenses related to increased sales hiring, research and development expenses for new product development costs and increased stock-based compensation expense.

Operating loss was $11.6 million in the first quarter 2021, as compared to an operating loss of $11.9 million in the corresponding period in 2020.

Net loss was $12.2 million, or $0.37 per diluted share for the first quarter 2021, as compared to a net loss of $12.8 million, or $0.47 per diluted share in the corresponding period in 2020.

Cash and marketable securities were $185.1 million and long-term borrowings were $39.5 million as of March 31, 2021.

2021 Financial Guidance Update

While encouraged by the strong underlying momentum in the business, SI-BONE remains cautious given the uncertainty surrounding COVID-19 cases and the potential negative impact on hospitals and ASC’s. Company guidance is highly sensitive to assumptions on a global recovery, which anticipates continued progress on vaccinations and immunizations resulting in normalized case scheduling and elective procedure levels progressing throughout the year. While the first quarter of 2021 was a good start to the year, the Company continues to take a measured approach given the early stages of the COVID-19 recovery. Based on these assumptions, the Company continues to expect full year 2021 total revenue to be approximately $92 million to $94 million, representing growth of 25% to 28% compared to full year 2020.

Webcast and Conference Call Information

SI-BONE will host a conference call to discuss the first quarter 2021 financial results after market close on Monday, May 3, 2021 at 4:30 P.M. Eastern Time. The conference call can be accessed live over the phone (866) 470-1968 for domestic callers or (409) 217-8248 for international callers, using conference ID: 8177238. The webcast can be accessed at

About SI-BONE, Inc.

SI-BONE is a medical device company that pioneered minimally invasive surgery of the SI joint with the iFuse Implant System. Studies have shown that the SI joint can be a source of pain in 15% to 30% of chronic low back pain. The iFuse Implant™, commercially available since 2009, is the only SI joint fusion device supported by multiple prospective clinical studies, including two randomized controlled trials, showing improved pain, patient function and quality of life resulting from treatment. There are over 90 peer-reviewed publications demonstrating the safety, durable effectiveness, and biomechanical and economic benefits unique to the iFuse Implant ( This body of evidence has enabled multiple government and private insurance payors to establish coverage of the SI joint fusion procedure exclusively when performed with the iFuse Implant System.

The iFuse Implant System is intended for sacroiliac fusion for conditions including sacroiliac joint dysfunction that is a direct result of sacroiliac joint disruption and degenerative sacroiliitis. This includes conditions whose symptoms began during pregnancy or in the peripartum period and have persisted postpartum for more than 6 months. The iFuse Implant System is also intended for sacroiliac fusion to augment stabilization and immobilization of the sacroiliac joint in skeletally mature patients undergoing sacropelvic fixation as part of a lumbar or thoracolumbar fusion. In addition, the iFuse Implant System is intended for sacroiliac fusion in acute, non-acute, and non-traumatic fractures involving the sacroiliac joint. There are potential risks associated with the iFuse Implant System. It may not be appropriate for all patients and all patients may not benefit.

For additional information on the company or the products including risks and benefits, please visit

SI-BONE and iFuse Implant System are registered trademarks of SI-BONE, Inc. ©2021 SI-BONE, Inc. All Rights Reserved. 05032021

Forward Looking Statements

The statements in this press release regarding expectations of future events or results, including SI-BONE’s expectations of continued growth and financial outlook, contained in this press release are "forward-looking" statements. These forward-looking statements are based on SI-BONE's current expectations and inherently involve significant risks and uncertainties. These risks include the impact the COVID-19 pandemic will have on the ability and desire of patients and physicians to undergo procedures using the iFuse Implant System, the duration of the COVID-19 pandemic, whether the COVID-19 pandemic will recur in the future, and SI-BONE's ability to increase demand for iFuse, and obtain favorable coverage and reimbursement determinations from third-party payors. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these and other risks and uncertainties, many of which are described in the company's most recent filings on Form 10-K and Form 10-Q, and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC's Internet site (, especially under the caption "Risk Factors". SI-BONE does not undertake any obligation to update forward-looking statements and expressly disclaims any obligations or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein, except as required by law.

Investor Contact
Matt Bacso, CFA

(In thousands, except share and per share amounts)

Three Months Ended March 31,
Revenue$20,442 $16,821 
Cost of goods sold2,200 1,932 
     Gross profit18,242 14,889 
     Gross margin89 %89 %
Operating expenses:
     Sales and marketing20,922 19,281 
     Research and development2,955 2,090 
     General and administrative5,940 5,400 
Total operating expenses29,817 26,771 
Loss from operations(11,575)(11,882)
Interest and other income (expense), net:
Interest income61 498 
Interest expense(1,064)(1,231)
Other income (expense), net336 (157)
Net loss$(12,242)$(12,772)
Net loss per share, basic and diluted$(0.37)$(0.47)
Weighted-average number of common shares used to compute basic and diluted net loss per share32,691,578 27,252,409 

(in thousands)

March 31,December 31,
Current assets:
     Cash and cash equivalents$37,364 $53,581 
Short-term investments147,687 142,851 
     Accounts receivable, net13,088 13,611 
     Inventory7,408 5,633 
     Prepaid expenses and other current assets2,563 2,565 
Total current assets208,110 218,241 
Property and equipment, net7,285 4,527 
Other non-current assets366 374 
TOTAL ASSETS$215,761 $223,142 
Current liabilities:
     Accounts payable$5,183 $3,271 
     Accrued liabilities and other8,525 10,199 
Total current liabilities13,708 13,470 
Long-term borrowings39,543 39,455 
Other long-term liabilities843 854 
          TOTAL LIABILITIES54,094 53,779 
Stockholders' Equity:
Common stock and additional paid-in capital
412,756 408,116 
Accumulated other comprehensive income430 524 
Accumulated deficit(251,519)(239,277)
          TOTAL STOCKHOLDERS' EQUITY161,667 169,363