PI Impinj 8-K29 Apr 20Changes in Registrant's Certifying Accountant

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM8-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): April 28, 2020

Impinj, Inc.

(Exact Name of Registrant as Specified in Charter)

400 Fairview Avenue North, Suite 1200

Seattle, Washington 98109

(Address of principal executive offices, including zip code)

(206)517-5300

(Registrant’s telephone number, including area code)

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

Check the appropriate box below if the Form8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

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

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 Rule12b-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 4.01. Change in Registrant’s Certifying Accountant.

(a) Dismissal of Previous Independent Registered Public Accounting Firm

On April 28, 2020, the Audit Committee (the “Audit Committee”) of the Board of Directors of Impinj, Inc. (the “Company”), approved the dismissal of PricewaterhouseCoopers LLP (“PwC”), which was then serving as the Company’s independent registered public accounting firm. PwC was dismissed on April 28, 2020 as the Company’s independent registered public accounting firm, effective immediately.

PwC’s reports on the Company’s financial statements for the years ended December 31, 2019 and 2018 did not contain an adverse opinion or a disclaimer of opinion, and were not qualified or modified as to uncertainty, audit scope, or accounting principles.

During the Company’s two most recent fiscal years ended December 31, 2019 and 2018 and the subsequent interim period through April 28, 2020, there were no disagreements, within the meaning of Item 304(a)(1)(iv) of RegulationS-K promulgated under the Exchange Act (“RegulationS-K”) and the related instructions thereto, with PwC on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements, if not resolved to the satisfaction of PwC, would have caused it to make reference to the subject matter of the disagreements in connection with its reports.

During the Company’s two most recent fiscal years ended December 31, 2019 and 2018 and the subsequent interim period through April 28, 2020, except as noted below, there were no reportable events within the meaning of Item 304(a)(1)(v) of RegulationS-K and the related instructions thereto. As disclosed in the Company’s Annual Report on Form10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission on February 28, 2019, the Company remediated a previously identified material weakness in the Company’s internal control over financial reporting relating to the accounting and financial statement disclosure over complex accounting matters. The subject matter of this reportable event was discussed by the Audit Committee with PwC. The Company has authorized PwC to respond fully to the inquiries of Ernst & Young LLP (“EY”) concerning the subject matter of the reportable event.

The Company has provided PwC with the disclosures under this Item 4.01(a), and has requested that PwC furnish the Company with a letter addressed to the Securities and Exchange Commission stating whether it agrees with the statements made by the Company in this Item 4.01(a) and, if not, stating the respects in which it does not agree. PwC’s letter is filed as Exhibit 16.1 to this Current Report on Form8-K.

(b) Appointment of New Independent Registered Public Accounting Firm

On April 28, 2020, the Audit Committee approved the appointment of EY as the Company’s new independent registered public accounting firm, effective April 28, 2020. During the Company’s two most recent fiscal years ended December 31, 2019 and 2018, and the subsequent interim period through April 28, 2020, neither the Company nor anyone acting on its behalf consulted with EY regarding any of the matters described in Items 304(a)(2)(i) and (ii) of RegulationS-K.

Item 9.01. Financial Statements and Exhibits.

(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.