DraftKings Inc.

Rule 10b5-1 Trading Plans

Certain of our directors and executive officers have made, and may from time to time enter into trading plans or make elections to have shares sold or withheld to cover withholding taxes or pay the exercise price of options, which may be designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act or may constitute non-Rule 10b5-1 trading arrangements (as defined in Item 408(c) of Regulation S-K).

On November 10, 2025, Erik Bradbury, our Chief Accounting Officer, entered into a trading arrangement designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act (the “Bradbury 10b5-1 Plan”). The Bradbury 10b5-1 Plan provides for (i) the sale of up to 10,561 shares of the Company’s Class A common stock pursuant to a limit order and (ii) additional sales, at market prices, of shares that may be acquired in the future pursuant to the vesting/settlement of certain Company equity awards and shares purchased under the Company’s employee stock purchase plan, in each case in accordance with the plan’s pre-established trading instructions (including instructions to sell specified percentages of “net shares” delivered upon vesting/settlement). The number of shares to be withheld, and thus the exact number of shares to be sold pursuant to the Bradbury 10b5-1 Plan, can only be determined upon the occurrence of future vesting events. The Bradbury 10b5-1 Plan will terminate on December 31, 2026, or earlier upon completion of all sales under the plan (or upon earlier termination in accordance with its terms).

On November 24, 2025, Matthew Kalish, our President, DraftKings North America and a member of our Board of Directors, terminated a trading arrangement designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act (the “Kalish 10b5-1 Plan”), which had been adopted on September 9, 2025. The Kalish 10b5-1 Plan previously provided for the sale of up to 1,260,000 shares of the Company’s Class A common stock and was scheduled to terminate on March 3, 2026, or earlier if all transactions under the Kalish 10b5-1 Plan were completed. No shares of the Company’s Class A common stock were sold under the Kalish 10b5-1 Plan.

On November 24, 2025, Matthew Kalish, our President, DraftKings North America and a member of our Board of Directors, entered into a prepaid variable forward sale contract with an unaffiliated third-party buyer, which may constitute a non-Rule 10b5-1 trading arrangement (the “Kalish PVF Contract”). The Kalish PVF Contract obligates Mr. Kalish to deliver to such unaffiliated third-party buyer 1,391,574 shares of our Class A common stock on the November 17, 2028 maturity date.

On December 12, 2025, Jocelyn Moore, amember of our Board of Directors, entered into a trading arrangement designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act (the “Moore 10b5-1 Plan”). The Moore

10b5-1 Plan provides for the sale of up to 2,150 shares of the Company’s Class A common stock and terminates on the earlier of (i) the completion of all sales under the Moore 10b5-1 Plan and (ii)June 30, 2026.