The compensation costs that have been charged against income for the 13 weeks ended May 4, 2019 and May 5, 2018 were as follows (in thousands):

Expense for restricted stock units is shown net of forfeitures of $1.3 million and $6,000 for the 13 weeks ended May 4, 2019 and May 5, 2018, respectively.

In the 13 weeks ended May 4, 2019 and May 5, 2018, we granted the following equity awards:

At May 4, 2019, the total compensation costs related to nonvested restricted stock unit awards not yet recognized was $7.3 million and the weighted-average period over which such awards are expected to be recognized was 2.9 years.  There were no compensation costs related to nonvested stock options at May 4, 2019.

Under the 2012 Non-Employee Director Equity Plan (2012 Plan), a total of 13,858 and 4,435 shares of our common stock were awarded during the 13 weeks ended May 4, 2019 and May 5, 2018, respectively, as part of the annual equity award to directors in the first quarter.

The weighted-average grant date fair value of stock options granted during the 13 weeks ended May 4, 2019 and May 5, 2018 was $5.46 and $7.15 per share, respectively.

The number of shares purchased, the average price per share and the weighted-average grant date fair value of shares purchased through our employee stock purchase plan were as follows: