INVESTOR ACTION ALERT: The Schall Law Firm Announces the Filing of a Class Action Lawsuit Against Sunlands Technology Group and Encourages Investors with Losses in Excess of $100,000 to Contact the Firm

The Schall Law Firm , a national shareholder rights litigation firm, announces the filing of a class action lawsuit against Sunlands Technology Group (Sunlands or the Company) (NYSE: STG ) for violations of the federal securities laws.