Opendoor Technologies Inc.

(a) None.

(b) None.

(c)The following table describes contracts, instructions or written plans for the sale or purchase of our securities that were intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement” by our directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) during the three-month period ended September 30, 2026.

(1)Intended to satisfy the affirmative defense of Rule 10b5-1(c)

(2)Not intended to satisfy the affirmative defense of Rule 10b5-1(c)

(3)At the time of adoption, the maximum number of shares that could be sold was unknown. The Rule 10b5-1 trading arrangement contemplated, as of the adoption date, the sale of up to 859,977 shares of common stock subject to RSUs previously granted to Ms. Schwartz that will vest or vested at various dates between May 15, 2026 and July 15, 2027, 63,701 stock options, and 59,595 shares held directly by Ms. Schwartz. The aggregate number of Ms. Schwartz’s RSU shares that would have been available for sale under the Rule 10b5-1 trading arrangement was not determinable because the shares available would be net of shares sold to satisfy tax withholding obligations that arise in connection with the vesting and settlement of such RSU awards.