Common stock reserved for new stock-based awards, shares

[Table](#i433d81903e814837b268e57261b357cb_7) [of Contents](#i433d81903e814837b268e57261b357cb_7)triggering events at a purchase price in cash equal to 101% of the principal plus accrued and unpaid interest. Accrued interest related to the Senior Notes was $98 million and $110 million as of December 31, 2021 and 2020. Estimated Fair Value. The total estimated fair value of our Senior Notes was approximately $8.0 billion and $9.1 billion as of December 31, 2021 and 2020. Additionally, the estimated fair value of the Convertible Notes was $1.2 billion as of December 31, 2021. The fair value was determined based on quoted market prices in less active markets and is categorized according as Level 2 in the fair value hierarchy.Credit FacilitiesRevolving Credit Facility. As of December 31, 2021, Expedia Group maintained a $1.145 billion revolving credit facility with a group of lenders that expires on May 31, 2023 (the “Revolving Credit Facility”). Obligations under the Revolving Credit Facility are secured by substantially all of the assets of the Company and its subsidiaries that guarantee the facility (subject to certain exceptions, including for our headquarters located in Seattle, WA) up to the maximum amount permitted under the indentures governing the Senior Notes without securing such Senior Notes. Loans under the Revolving Credit Facility bear interest at a per annum rate equal to an index rate plus a margin depending on the Company's credit ratings (A) in the case of eurocurrency loans ranging from 1.00% to 1.75% , and (B) in the case of base rate loans, at rates ranging from 0.00% to 0.75%. The Revolving Credit Facility contains certain financial covenants, including a leverage ratio test. As of December 31, 2021 and 2020, we had no Revolving Credit Facility borrowings outstanding. The amount of stand-by letters of credit (“LOC”) issued under the Revolving Credit Facility reduced the credit amount available. As of December 31, 2021 and 2020, there was $14 million and $13 million of outstanding stand-by LOCs issued under the facility.Foreign Credit Facility. As of December 31, 2021, the Company and Expedia Group International Holdings III, LLC (the “Borrower”) also maintained an $855 million credit facility with a group of lenders that expires on May 31, 2023 (the “Foreign Credit Facility”). Obligations under the Foreign Credit Facility are unsecured. Such obligations are guaranteed by the Company, its subsidiaries that guarantee obligations under the Revolving Credit Facility, as mentioned above, and certain of the Company’s additional subsidiaries. Loans under the Foreign Credit Facility bear interest at a per annum rate equal to an index rate plus a margin depending on the Company’s credit ratings (A) in the case of eurocurrency loans, ranging from 1.25% to 2.00%, and (B) in the case of base rate loans, ranging from 0.25% to per 1.00%. The covenants, events of default and other terms and conditions in the Foreign Credit Facility are substantially similar to those in the Revolving Credit Facility, but include additional limitations on the Borrower and certain other entities that are not obligors under the Revolving Credit Facility.As of December 31, 2021 and 2020, we had no Foreign Credit Facility borrowings outstanding.NOTE 8 — Employee Benefit PlansOur U.S. employees are generally eligible to participate in a retirement and savings plan that qualifies under Section 401(k) of the Internal Revenue Code. Participating employees may contribute up to 50% of their pretax salary, but not more than statutory limits. We contribute fifty cents for each dollar a participant contributes in this plan, with a maximum contribution of 3% of a participant’s earnings. Our contribution vests with the employee after the employee completes two years of service. Participating employees have the option to invest in our common stock, but there is no requirement for participating employees to invest their contribution or our matching contribution in our common stock. We also have various defined contribution plans for our international employees. Our contributions to these benefit plans were $68 million, $63 million and $81 million for the years ended December 31, 2021, 2020 and 2019.NOTE 9 — Stock-Based Awards and Other Equity Instruments Pursuant to the Amended and Restated Expedia Group, Inc. 2005 Stock and Annual Incentive Plan, we may grant restricted stock, restricted stock awards, RSUs, stock options and other stock-based awards, such as PSUs, to directors, officers, employees and consultants. As of December 31, 2021, we had approximately 9 million shares of common stock reserved for new stock-based awards under the 2005 Stock and Annual Incentive Plan. We issue new shares to satisfy the exercise or release of stock-based awards. F- 29
