Item 1A. RISK FACTORS

There have been no material changes to the risk factors disclosed in our 2022 Annual Report on Form 10-K.

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ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Issuer Purchases of Equity Securities

The following table presents information related to our repurchases of common stock for the periods indicated:

1 Total number of shares purchased includes 208,100 shares delivered to or withheld by us in connection with employee payroll tax withholding upon the exercise or vesting of stock awards. Stock grants to employees and directors and stock issued for stock option plans and stock purchase plans in the consolidated changes in equity are shown net of these shares purchased.

2 Represents the number of shares repurchased through the common stock repurchase program authorized by our Board of Directors, which the Board of Directors evaluates periodically. During the three months ended March 31, 2023, we repurchased 1,304,571 shares at a total cost of $622 under the program, including the cost of options to purchase shares. The Board of Directors has authorized our common stock repurchase program since 2003. The most recent authorized increase to the program was $5,000 on January 24, 2023 by our Audit Committee, pursuant to authorization granted by the Board of Directors. No duration has been placed on our common stock repurchase program, and we reserve the right to discontinue the program at any time.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

None.