Blend Labs, Inc.

Rule 10b5-1 Trading Arrangements

Except as described below, during the three months ended March 31, 2026, 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 March 16, 2026, Matt Thomson, our Head of Revenue, 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 Mr. Thomson’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, 2027, or earlier if all transactions under the trading arrangement are completed.

On March 18, 2026, Srinivasan Venkatramani, our Head of Product, Technology and Customer Operations, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 477,653 shares of our Class A common stock, with the exact number of shares to be sold pursuant to Mr. Venkatramani’s trading arrangement to be determined based on market prices of our Class A common stock. Additionally, this trading arrangement includes performance stock units (“PSUs”). The actual number of PSUs that vest, if any, depend on Mr. Venkratamani’s continued service and satisfaction of certain market-based performance targets related to the Company’s stock price hurdles. The market-based performance targets related to the Company’s stock price hurdles have not yet been satisfied. The trading arrangement is intended to satisfy the affirmative defense of Rule 10b5-1(c). The duration of the trading arrangement is until May 19, 2027, or earlier if all transactions under the trading arrangement are completed.

On March 18, 2026, Eric Woersching, a member of ourboard of directors, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 50,000 shares of our Class A common stock, with the exact number of shares to be sold pursuant to Mr. Woersching’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 May 31, 2027, or earlier if all transactions under the trading arrangement are completed.

On March 18, 2026, Nima Ghamsari, Head of Blend, terminated his Rule 10b5-1 trading arrangement previously entered into on December 16, 2025. The terminated trading arrangement provided for the sale from time to time of shares of our Class A Common Stock, intended to generate an aggregate of approximately a maximum dollar amount of $650,000, with the exact number of shares to be sold pursuant to Mr. Ghamsari’s trading arrangement to be determined based on market prices of our Class A Common Stock. The terminated trading arrangement was set to expire on June 11, 2026, subject to early termination for certain specified events as set forth in the plan, and was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).