Neuronetics Inc — Current Report (Form 8-K)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) May 5, 2026

NEURONETICS, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code (877) 600-7555

(Former name or former address, if changed since last report.) Not applicable.

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

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:

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

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. ☐

Neuronetics, Inc. (the “Company”) issued a press release on May 5, 2026, announcing its financial results for the three months ended March 31, 2026. A copy of the press release is being furnished to the Securities and Exchange Commission (“SEC”) as Exhibit 99.1 to this report on Form 8-K and is incorporated by reference to this Item 2.02.

***

The information furnished pursuant to Item 2.02, including Exhibit 99.1, 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 liabilities of that section, nor shall it be deemed to be incorporated by reference into any of the Company’s filings with the SEC under the Exchange Act or the Securities Act of 1933, as amended (the “Securities Act”), whether made before or after the date hereof, regardless of any general incorporation language in such a filing, except as expressly set forth by specific reference in such a filing. Except as required by law, the Company undertakes no duty or obligation to publicly update or revise the information so furnished.

On May 5, 2026, Neuronetics released a presentation (the “Presentation”) that it may present to certain investors. A copy of the Presentation is attached hereto as Exhibit 99.2. The information contained in Exhibit 99.2 is incorporated herein by reference.

The information in this report furnished pursuant to Item 7.01, including Exhibit 99.2, shall not be deemed “filed” for the purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be deemed to be incorporated by reference into any of the Company’s filings with the SEC under the Exchange Act or the Securities Act whether made before or after the date hereof, regardless of any general incorporation language in such a filing, except as expressly set forth by specific reference in such a filing. Except as required by law, the Company undertakes no duty or obligation to publicly update or revise the information so furnished.

“Safe harbor” statement under the Private Securities Litigation Reform Act of 1995:

Certain statements in this report, including the documents incorporated by reference herein, include “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act, which are intended to be covered by the safe harbors created by those laws and other applicable laws and “forward-looking information” within the meaning of applicable Canadian securities laws. Statements in this report that are not historical facts constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by terms such as “may,” “will,” “would,” “should,” “expect,” “plan,” “design,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential,” “outlook” or “continue” as well as the negative of these terms and similar expressions. These statements include those relating to the Company’s business outlook and current expectations for upcoming quarters and fiscal year 2026 including with respect to revenue, expenses, growth, and any statements of assumptions underlying any of the foregoing items. These statements are subject to significant risks and uncertainties and actual results could differ materially from those projected. The Company cautions investors not to place undue reliance on the forward-looking statements contained in this report. These risks and uncertainties include, without limitation, risks and uncertainties related to: the effect of the transaction with Greenbrook TMS Inc. on our business relationships; operating results and business generally; our ability to execute our business strategy; our ability to achieve or sustain profitable operations due to our history of losses; our reliance on the sale and usage of our NeuroStar Advanced Therapy System to generate revenues; the scale and efficacy of our salesforce; our ability to retain talent; availability of coverage and reimbursement from third-party payors for treatments using our products; physician and patient demand for treatments using our products; developments in respect of competing technologies and therapies for the indications that our products treat; product defects; our ability to obtain and maintain intellectual property protection for our technology; developments in clinical trials or regulatory review of the NeuroStar Advanced Therapy System for additional indications; developments in regulation in the U.S. and other applicable jurisdictions; potential effects of evolving and/or extensive government regulation; the terms of our

credit facility; and our ability to achieve positive cash flows. For a discussion of these and other related risks, please refer to the Company’s recent filings with the SEC, which are available on the SEC’s website at www.sec.gov, including, without limitation, the factors described under the heading “Risk Factors” in Neuronetics’ Annual Report on Form 10-K for the fiscal year ended December 31, 2025, as may be updated or supplemented by subsequent reports that Neuronetics has filed or files with the SEC. These forward-looking statements are based on the Company’s expectations and assumptions as of the date of this report. Except as required by law, the Company undertakes no duty or obligation to update any forward-looking statements contained in this report as a result of new information, future events, or changes in the Company’s expectations.

(d) Exhibits.

SIGNATURE

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.