Amanda Covington, CFA, works for McJan Investment Management. McJan employees must receive prior clearance for personal investments as per the firm's compliance procedures. The clearance requires a written request specifying the security, quantity, and broker. Pre-cleared transactions are valid only for the trading day. Covington received prior clearance for two transactions but later purchased 250 shares of Stock B without clearance. Did Covington violate any CFA Institute Standards of Professional Conduct in this action?