[Qihoo 360 Announces Purchase of New Office Premises in Beijing Qihoo 360 Technology Co. Ltd. BEIJING, August 31, 2012 — The Company plans to fund the purchase primarily through its operating cash flow and cash reserves and pay in installments upon completion of various milestones in accordance with the agreements. Cash payments related to the purchase for 2012, 2013 and] [FORM 6-K 001-35109 Qihoo 360 Technology Co. Ltd. Block 1, Area D, Huitong Times Plaza Form 20-F x Form 40-F o o o Qihoo 360 Technology Co. Ltd.]

[Qihoo 360 Reports Second Quarter 2012 Unaudited Financial Results Qihoo 360 Technology Co. Ltd. BEIJING, Aug. 21, 2012 — Second Quarter Financial Highlights (1) · Revenues were $72.8 million, representing an increase of 107.3% from $35.1 million in the second quarter of 2011. · Net income was $7.0 million, compared to $11.1 million in the second quarter of 2011. ·] [FORM 6-K 001-35109 Qihoo 360 Technology Co. Ltd. Block 1, Area D, Huitong Times Plaza Form 20-F x Form 40-F o o o Qihoo 360 Technology Co. Ltd.]

[Qihoo 360 and Giant Interactive Collaborate to Operate ZT Online 2 Micro-Client Version BEIJING, July 27, 2012 /PRNewswire-Asia/ — Qihoo 360 Technology Co. Ltd (NYSE: QIHU) (“Qihoo 360”), a leading Internet company in China, and Giant Interactive Group Inc. (NYSE: GA) (“Giant”), one of China’s leading online game developers and operators, today announced that they will collaborate in operating Qianjun] [FORM 6-K 001-35109 Qihoo 360 Technology Co. Ltd. Block 1, Area D, Huitong Times Plaza Form 20-F x Form 40-F o o o Qihoo 360 Technology Co. Ltd.]

[Qihoo 360 Reports First Quarter 2012 Unaudited Financial Results and Appoints Co-CFO · Record Revenues of $69.3 Million, up 202.1% Year-over-Year. · GAAP Net Income of $14.1 Million, vs. a Net Loss of $21.4 Million a Year Ago. · Record Non-GAAP Net Income of $25.7 Million, up 290.5% Year-over-Year. Qihoo 360 Technology Co. Ltd. BEIJING, May 22, 2012 — “We] [FORM 6-K 001-35109 Qihoo 360 Technology Co. Ltd. Block 1, Area D, Huitong Times Plaza Form 20-F x Form 40-F o o o Qihoo 360 Technology Co. Ltd.]