Blend Labs, Inc.

Except as described below, during the three months ended September 30, 2025, none of our officers or directors, as defined in Rule 16a-1(f) of the Exchange Act, adopted, modified, orterminated any contract, instruction, or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) (a “Rule 10b5-1 trading arrangement”) or any “non Rule 10b5-1 trading arrangement,” as defined in Regulation S-K Item 408.

On August 13, 2025, Nima Ghamsari, our Head of Blend, terminated two Rule 10b5-1 trading arrangements previously adopted on December 13, 2024 and June 13, 2025, respectively. The terminated trading arrangements provided for the potential sale of up to an aggregate of 800,000 and 1,190,000 shares of our Class A common stock, respectively. The trading arrangements were intended to satisfy the affirmative defense of Rule 10b5-1(c).

On September 9, 2025, Oxana Tkach, our Head of Accounting and FP&A, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 81,250 shares of our Class A common stock, with the exact number of shares to be sold pursuant to Ms. Tkach’s trading arrangement to be determined based on market prices of our Class A common stock. The trading arrangement is intended to satisfy the affirmative defense of Rule 10b5-1(c). The duration of the trading arrangement is until July 31, 2026, or earlier if all transactions under the trading arrangement are completed.

On September 12, 2025, Winnie Ling, our Head of Legal and People, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 100,000 shares of our Class A common stock, with the exact number of shares to be sold pursuant to Ms. Ling’s trading arrangement to be determined based on market prices of our Class A common stock. The trading arrangement is intended to satisfy the affirmative defense of Rule 10b5-1(c). The duration of the trading arrangement is until June 30, 2026, or earlier if all transactions under the trading arrangement are completed.