Stock-Based Compensation	6 Months Ended
Jun. 30, 2023
Stock-Based Compensation
Stock-Based Compensation	Note 2. Stock-Based Compensation We maintain the Axcelis Technologies, Inc. 2012 Equity Incentive Plan, as amended (the “2012 Equity Plan”), an Internal Revenue Code Section 423 plan, which became effective on May 2, 2012, and permits the issuance of options, restricted stock, restricted stock units (“RSUs”) and performance awards to selected employees, directors and consultants of the Company. The 2012 Equity Plan is more fully described in Note 13 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2022. We recognized stock-based compensation expense of $4.7 million and $3.5 million for the three-month periods ended June 30, 2023 and 2022, respectively. We recognized stock-based compensation expense of $7.9 million and $6.2 million for the six-month periods ended June 30, 2023 and 2022, respectively. These amounts include compensation expense related to RSUs, non-qualified stock options and stock to be issued to participants under the 2020 Employee Stock Purchase Plan (the “2020 ESPP”). In the three-month periods ended June 30, 2023 and 2022, we issued 0.2 million and 0.2 million of common stock for purchases under the 2020 ESPP and vesting of RSUs, respectively. In the three-month period ended June 30, 2023, we received proceeds of $1.0 million for purchases under the 2020 ESPP. In the three-month period ended June 30, 2022, we received proceeds of $1.0 million in connection with the exercise of stock options and purchases under the 2020 ESPP. In the six-month periods ended June 30, 2023 and 2022, we issued 0.3 million and 0.4 million shares of common stock, respectively, upon stock option exercises, purchases under the 2020 ESPP and vesting of RSUs. In the six-month periods ended June 30, 2023 and 2022, we received proceeds of $1.0 million and $1.5 million, respectively, in connection with the exercise of stock options and purchases under the 2020 ESPP.

Stock-Based Compensation

6 Months Ended

Jun. 30, 2023

Note 2. Stock-Based Compensation

We maintain the Axcelis Technologies, Inc. 2012 Equity Incentive Plan, as amended (the “2012 Equity Plan”), an Internal Revenue Code Section 423 plan, which became effective on May 2, 2012, and permits the issuance of options, restricted stock, restricted stock units (“RSUs”) and performance awards to selected employees, directors and consultants of the Company.

The 2012 Equity Plan is more fully described in Note 13 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2022.

We recognized stock-based compensation expense of $4.7 million and $3.5 million for the three-month periods ended June 30, 2023 and 2022, respectively. We recognized stock-based compensation expense of $7.9 million and $6.2 million for the six-month periods ended June 30, 2023 and 2022, respectively. These amounts include compensation expense related to RSUs, non-qualified stock options and stock to be issued to participants under the 2020 Employee Stock Purchase Plan (the “2020 ESPP”).

In the three-month periods ended June 30, 2023 and 2022, we issued 0.2 million and 0.2 million of common stock for purchases under the 2020 ESPP and vesting of RSUs, respectively. In the three-month period ended June 30, 2023, we received proceeds of $1.0 million for purchases under the 2020 ESPP. In the three-month period ended June 30, 2022, we received proceeds of $1.0 million in connection with the exercise of stock options and purchases under the 2020 ESPP.

In the six-month periods ended June 30, 2023 and 2022, we issued 0.3 million and 0.4 million shares of common stock, respectively, upon stock option exercises, purchases under the 2020 ESPP and vesting of RSUs. In the six-month periods ended June 30, 2023 and 2022, we received proceeds of $1.0 million and $1.5 million, respectively, in connection with the exercise of stock options and purchases under the 2020 ESPP.