Shareholders' Equity	3 Months Ended
Mar. 31, 2021
Shareholders' Equity
Shareholders' Equity	Note 7 Shareholders’ Equity Common shares At a special meeting of shareholders held April 20, 2020, our shareholders authorized a combination of our common shares (the “Reverse Stock Split”) at a ratio of not less than 1-for-15 and not greater than 1-for-50, with the exact ratio to be set within that range at the sole direction of our Board of Directors (the “Board”). On April 20, 2020, the Board set the Reverse Stock Split ratio at 1-for-50. As a result of the Reverse Stock Split, 50 pre-reverse split common shares automatically combined into one new common share, without any action on the part of the shareholders. Nabors’ authorized number of common shares were also proportionally decreased from 800,000,000 to 16,000,000 common shares. Subsequently, the par value of each common share was proportionally increased from $0.001 to $0.05. In addition, at the special meeting, the shareholders authorized an increase in our common share capital by 100% following the Reverse Stock Split, to $1,600,000, resulting in an increase in the number of authorized common shares to 32,000,000. No fractional common shares were issued as a result of the Reverse Stock Split. Any fractional common shares of registered holders resulting from the Reverse Stock Split were rounded up to the nearest whole share. All share and per share information included in the accompanying financial statements has been retrospectively adjusted to reflect this Reverse Stock Split. Convertible Preferred Shares During 2018, we issued 5.75 million of our 6% Series A Mandatory Convertible Preferred Shares (the “mandatory convertible preferred shares”), par value $0.001 per share, with a liquidation preference of $50 per share. As of March 31, 2021 and December 31, 2020 we had 4.9 million mandatory convertible preferred shares outstanding. The dividends on the mandatory convertible preferred shares are payable on a cumulative basis at a rate of 6% annually on the initial liquidation preference of $50 per share. Dividends accumulate and are paid quarterly to the extent that we have available funds and our Board declares a dividend payable. We may elect to pay any accumulated and unpaid dividends in cash or common shares or any combination thereof. At issuance, each mandatory convertible preferred share was automatically convertible into between 0.1075 and 0.1290 of our common shares based on the average share price over a period of twenty consecutive trading days ending prior to May 1, 2021, subject to anti-dilution adjustments. As a result of the dividends paid on our common shares since the offering, the most recent publicly announced conversion rate for each mandatory convertible preferred share is between 0.1144 and 0.1372 of our common shares. Adjustments to the conversion ratio are required to be made and published when such adjustment would result in an increase or decrease of one percent or more of the conversion rate. At any time prior to May 1, 2021, a holder of mandatory convertible preferred shares may convert such mandatory convertible preferred shares into our common shares at the minimum conversion rate, subject to adjustment. Otherwise, the mandatory convertible preferred shares will automatically convert into common shares on May 3, 2021 at which time approximately 668 thousand common shares will be issued. Shareholder Rights Plan On May 5, 2020, our Board adopted a shareholder rights plan and declared a dividend of one right (a “Right”) for each outstanding common share to shareholders of record on May 15, 2020. Each Right entitles the holder to purchase from Nabors one one-thousandth of a Series B Junior Participating Preferred Share, par value $0.001 per share (the “Series B Preferred Shares’), of Nabors at a price of $58.08 per one one-thousandth of a Series B Preferred Share, subject to adjustment. The description of the Rights are set forth in a Rights Agreement, dated May 5, 2020 (the “Rights Agreement”), by and between Nabors and Computershare Trust Company, N.A., as Rights Agent. The Rights will expire on April 30, 2021, unless the expiration date is extended. Initially, the Rights will not be exercisable and will trade with our common shares. Under the Rights Agreement, the Rights will become exercisable only if a person or group or persons acting together (each, an “acquiring person”) acquires beneficial ownership of 4.9% or more of our outstanding common shares. The Rights Agreement was amended on May 27, 2020, to permit the shareholder identified therein, together with affiliates and associates, to beneficially own up to 10% of our outstanding common shares. If the Rights are triggered, each holder of a Right (other than the acquiring person, whose Rights will become void) will be entitled to purchase additional shares of our common stock at a 50% discount. In addition, if we are acquired in a merger or other business combination after an Acquiring Person acquires more than 4.9% of our outstanding common shares (10% for the shareholder identified in the amendment), each holder of a Right would then be entitled to purchase shares of the acquiring company’s stock at a 50% discount. Our Board, at its option, may exchange each Right (other than Rights owned by the acquiring person that have become void) in whole or in part, at an exchange ratio of one common share per outstanding Right, subject to adjustment. Except as provided in the Rights Agreement, our Board is entitled to redeem the Rights at $0.01 per Right. A person or group of persons that beneficially owns our common shares at or above the trigger threshold as of the time of the public announcement of the Rights Agreement generally will not trigger the Rights until such person or group of persons increases its ownership by 0.5% or more.

Shareholders' Equity

3 Months Ended

Mar. 31, 2021

Note 7 Shareholders’ Equity

Common shares

At a special meeting of shareholders held April 20, 2020, our shareholders authorized a combination of our common shares (the “Reverse Stock Split”) at a ratio of not less than 1-for-15 and not greater than 1-for-50, with the exact ratio to be set within that range at the sole direction of our Board of Directors (the “Board”). On April 20, 2020, the Board set the Reverse Stock Split ratio at 1-for-50. As a result of the Reverse Stock Split, 50 pre-reverse split common shares automatically combined into one new common share, without any action on the part of the shareholders. Nabors’ authorized number of common shares were also proportionally decreased from 800,000,000 to 16,000,000 common shares. Subsequently, the par value of each common share was proportionally increased from $0.001 to $0.05. In addition, at the special meeting, the shareholders authorized an increase in our common share capital by 100% following the Reverse Stock Split, to $1,600,000, resulting in an increase in the number of authorized common shares to 32,000,000. No fractional common shares were issued as a result of the Reverse Stock Split. Any fractional common shares of registered holders resulting from the Reverse Stock Split were rounded up to the nearest whole share. All share and per share information included in the accompanying financial statements has been retrospectively adjusted to reflect this Reverse Stock Split.

Convertible Preferred Shares

During 2018, we issued 5.75 million of our 6% Series A Mandatory Convertible Preferred Shares (the “mandatory convertible preferred shares”), par value $0.001 per share, with a liquidation preference of $50 per share. As of March 31, 2021 and December 31, 2020 we had 4.9 million mandatory convertible preferred shares outstanding.

The dividends on the mandatory convertible preferred shares are payable on a cumulative basis at a rate of 6% annually on the initial liquidation preference of $50 per share. Dividends accumulate and are paid quarterly to the extent that we have available funds and our Board declares a dividend payable. We may elect to pay any accumulated and unpaid dividends in cash or common shares or any combination thereof. At issuance, each mandatory convertible preferred share was automatically convertible into between 0.1075 and 0.1290 of our common shares based on the average share price over a period of twenty consecutive trading days ending prior to May 1, 2021, subject to anti-dilution adjustments. As a result of the dividends paid on our common shares since the offering, the most recent publicly announced conversion rate for each mandatory convertible preferred share is between 0.1144 and 0.1372 of our common shares. Adjustments to the conversion ratio are required to be made and published when such adjustment would result in an increase or decrease of one percent or more of the conversion rate. At any time prior to May 1, 2021, a holder of mandatory convertible preferred shares may convert such mandatory convertible preferred shares into our common shares at the minimum conversion rate, subject to adjustment. Otherwise, the mandatory convertible preferred shares will automatically convert into common shares on May 3, 2021 at which time approximately 668 thousand common shares will be issued.

Shareholder Rights Plan

On May 5, 2020, our Board adopted a shareholder rights plan and declared a dividend of one right (a “Right”) for each outstanding common share to shareholders of record on May 15, 2020. Each Right entitles the holder to purchase from Nabors one one-thousandth of a Series B Junior Participating Preferred Share, par value $0.001 per share (the “Series B Preferred Shares’), of Nabors at a price of $58.08 per one one-thousandth of a Series B Preferred Share, subject to adjustment. The description of the Rights are set forth in a Rights Agreement, dated May 5, 2020 (the “Rights Agreement”), by and between Nabors and Computershare Trust Company, N.A., as Rights Agent. The Rights will expire on April 30, 2021, unless the expiration date is extended.

Initially, the Rights will not be exercisable and will trade with our common shares. Under the Rights Agreement, the Rights will become exercisable only if a person or group or persons acting together (each, an “acquiring person”) acquires beneficial ownership of 4.9% or more of our outstanding common shares. The Rights Agreement was amended on May 27, 2020, to permit the shareholder identified therein, together with affiliates and associates, to beneficially own up to 10% of our outstanding common shares.

If the Rights are triggered, each holder of a Right (other than the acquiring person, whose Rights will become void) will be entitled to purchase additional shares of our common stock at a 50% discount. In addition, if we are acquired in a merger or other business combination after an Acquiring Person acquires more than 4.9% of our outstanding common shares (10% for the shareholder identified in the amendment), each holder of a Right would then be entitled to purchase shares of the acquiring company’s stock at a 50% discount. Our Board, at its option, may exchange each Right (other than Rights owned by the acquiring person that have become void) in whole or in part, at an exchange ratio of one common share per outstanding Right, subject to adjustment. Except as provided in the Rights Agreement, our Board is entitled to redeem the Rights at $0.01 per Right.

A person or group of persons that beneficially owns our common shares at or above the trigger threshold as of the time of the public announcement of the Rights Agreement generally will not trigger the Rights until such person or group of persons increases its ownership by 0.5% or more.