DALLAS and CAESAREA, Israel, Dec. 16, 2010 (GLOBE NEWSWIRE) -- Zion Oil & Gas, Inc. (Nasdaq:ZN) announced today that on December 15, 2010, it completed its previously announced rights offering. The preliminary outcome of the rights offering, as of the close of business on December 15, 2010, indicates that subscriptions for approximately 3.65 million units, for gross proceeds of approximately $18.25 million, have been received (including over-subscriptions). All shareholders that requested over-subscription shares will be awarded their full over-subscription request.

Zion's Chief Executive Officer Richard Rinberg said today, "I am pleased to announce the successful conclusion of our rights offering. The proceeds from this offering provide us with the funds that we believe are necessary to allow us to proceed with our planned drilling subsidiary, provide us with financial and operating flexibility and enable us to further our exploration and drilling program significantly.

"We have successfully drilled approximately two-thirds of our Ma'anit-Joseph #3 well and are now drilling the final third.

"We remain excited about the possibility of recovering hydrocarbons on our license and permit areas, onshore Israel, especially due to the U.S. Geological Survey report, published in April 2010, containing their assessment that there may be 1.7 billion barrels of recoverable oil and 122 trillion cubic feet of recoverable gas in the Levant Basin, as all of Zion's exploration rights fall within the area of the Levant Basin."

Under the completed rights offering, holders of record of Zion's common stock were given non-transferable subscription rights to purchase eighteen (18) Units for every one hundred (100) shares of common stock owned as of the close of business on September 28, 2010. The purchase price of a Unit was $5. Each Unit consisted of one (1) share of Zion's common stock and one (1) warrant to purchase an additional share of Zion's common stock at an exercise price of $4.00.