Share based compensation

The share-based compensation expense for our share options and Restricted Stock Unit ("RSU") plans in the Consolidated Statements of Operations are as follows:



	Successor		Predecessor
(In $ millions)	Year ended December 31, 2019	Period from July 2, 2018 through December 31, 2018	Period from January 1, 2018 through July 1, 2018	Year ended December 31, 2017
Share-based compensation expense ⁽¹⁾	5	—	9	7
Total share-based compensation expense	5	—	9	7


⁽¹⁾	The $9 million expense for the period from January 1, 2018 through July 1, 2018 included a charge of $6 million for schemes cancelled on emergence from Chapter 11. This was classified within reorganization items.

On August 16, 2018, we established an employee incentive plan with a limit of 11.1 million shares in Seadrill Limited.

On September 4, 2018 we made a grant of 0.5 million RSUs to certain employees and directors under the employee incentive plan. The awards were subject to a service condition and vest 33% per year over the three-year period to September 4, 2021. On September 4, 2019, the first tranche of RSUs vested and 0.2 million Seadrill shares were issued to employees and directors.

On April 26, 2019, we made a grant of 1.7 million performance shares to certain employees under our employee incentive plan. The awards are subject to service and performance conditions and the vesting period ends on March 31, 2022.

On August 23, 2019, we made a grant of 0.3 million restricted stock units to directors. The awards were subject to a service condition and vest 33% per year over the three-year period to August 23, 2022.

The compensation cost for non-vested awards not yet recognized as at December 31, 2019 is $9 million (December 31, 2018: $9 million), with a weighted average vesting period of 2 years.