In the latest development in the previously reported $4.2 billion cash deal, Cox Automotive and Dealertrack Technologies on Friday extended the offering period of its previously announced tender offer to purchase all of the outstanding shares of common stock of Dealertrack for $63.25 per share.

Officials said the offer, which was previously scheduled to expire at midnight ET on Friday has been extended until midnight ET on Sept. 14, unless it is extended further under the circumstances set forth in the merger agreement.

The companies added the expectation that the acquisition will close in the third quarter remains unchanged.

“All terms and conditions of the offer shall remain unchanged during the extended period,” officials said about the acquisition first announced on June 12.

American Stock Transfer & Trust Co., the depositary for the Offer, has advised Cox Automotive and Dealertrack that, as of 5 p.m. EST on Thursday, approximately 18,428,133 shares of Dealertrack had been validly tendered and not validly withdrawn pursuant to the offer. That figure is not including 34,360 shares tendered pursuant to notices of guaranteed delivery for which shares have not yet been delivered in settlement or satisfaction of such guarantee, representing approximately 32.79 percent of Dealertrack’s outstanding shares.

“Shareholders who have already tendered their shares of Dealertrack do not have to re-tender their shares or take any other action as a result of the extension of the expiration date of the offer,” officials said.

The acquisition is subject to a minimum tender of at least a majority of outstanding Dealertrack shares on a fully diluted basis, customary regulatory approvals and closing conditions.

This extension comes on the heels of Dealertrack agreeing to sell its inventory solution to DealerSocket in a $55 million cash deal.