Announcement

Dated: August 14, 2017

QIHOO 360 TECHNOLOGY CO. LTD. 0.50% CONVERTIBLE SENIOR NOTES DUE 2020 (CUSIP No. US74734MAE93)
NOTICE REGARDING REPURCHASE OF NOTES AT OPTION OF HOLDERS

Reference is made to that certain Indenture, dated as of August 6, 2014 (the “Indenture”) and Supplemental Indenture, dated as of July 15, 2016, by and between Beijing Qihu Keji Co. Ltd. (the “Company”) and Citicorp International Limited, as trustee (the “Trustee”), pursuant to which the Company issued its 0.50% Convertible Senior Notes due 2020 (CUSIP No. US74734MAE93) (the “Notes”). Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture.

Pursuant to Section 15.01 of the Indenture, Holders of the Notes may require the Company to repurchase for cash on August 15, 2017 (the “Repurchase Date”) all of such Holder’s Notes, or any portion thereof that is an integral multiple of US$1,000, subject to the terms and conditions of the Indenture.

Notice is hereby given to each Holder pursuant to Section 15.01 of the Indenture.

Any Holder delivering to the Paying Agent the Repurchase Notice contemplated by Section 15.01 of the Indenture shall have the right to withdraw, in whole or in part, such Repurchase Notice at any time prior to the Repurchase Expiration Time by delivery of a written notice specifying: (A) the principal amount of the Notes with respect to which such notice of withdrawal is being submitted, and (B) the principal amount, if any, of the Notes that remain subject to the original Repurchase Notice, which portion must be in principal amounts of US$1,000 or an integral multiple of US$1,000. The notice to withdraw must comply with appropriate procedures of the Depositary.

The Repurchase Price for any Note in respect of which a Repurchase Notice has been validly given and not withdrawn will be paid as promptly as practicable, but no later than the later of the Repurchase Date and the time of book-entry transfer.

Holders of the Notes should refer to the Indenture for a complete description of repurchase procedures.

BY: QIHOO 360 TECHNOLOGY CO. LTD.