On May 15, 2013, Qualstar Corp. filed excerpts from its Quarterly Report on Form 10-Q, containing comments on effects of an unsolicited partial tender offer commenced by BKF Capital Group, Inc. in January 2013 and subsequently terminated, and of a purported advance notice of nomination sent to the Company by BKF Capital Group stating an intent to nominate directors for election to the Company's Board of Directors in opposition to the Board's nominees, at the 2013 annual meeting of shareholders.