17 Education & Technology Group Inc.

17 Education & Technology Group Inc. announced it will release its unaudited financial results for the first quarter ended March 31, 2026, on June 16, 2026, after the close of U.S. markets. The company will host an earnings conference call on the same day at 9:00 p.m. U.S. Eastern Time. Participants are required to preregister online to receive dial-in details, and a webcast will also be available.

17 Education & Technology Group Inc. disclosed details regarding its independent registered public accounting firms. The company reported no disagreements or reportable events with Deloitte, its predecessor auditor, during the specified periods. Deloitte confirmed its agreement with these disclosures in a letter to the SEC. Additionally, the company stated it had no consultations with Marcum Asia, its new auditor, on accounting principles or audit opinions prior to their engagement.

17 Education & Technology Group Inc. announced the dismissal of Deloitte Touche Tohmatsu Certified Public Accountants LLP as its independent registered public accounting firm and the appointment of Marcum Asia CPAs LLP, both effective May 27, 2026. The company stated that Deloitte's reports for 2024 and 2025 contained no adverse or qualified opinions, and there were no disagreements or reportable events during their tenure.

17 Education & Technology Group Inc. announced the filing of its annual report on Form 20-F for the fiscal year ended December 31, 2025, with the Securities and Exchange Commission on April 29, 2026. The report includes the Company's audited financial statements. It is available on the Company's investor relations website and the SEC's website, with hard copies provided to shareholders upon request.