Archer Aviation Inc

Rule 10b5-1 Trading Plans. During the three months ended September 30, 2024, none of our directors or officers adopted, modified orterminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” in each case as defined in Item 408 of Regulation S-K, except as described below:

On September 4, 2024, Tosha Perkins, Chief People and Partnerships Officer of the Company, modified a trading arrangement that was originally adopted in May 2024. The modified trading arrangement, which expires on November 17, 2025, provides for the sale of up to an aggregate of 172,428 shares of Class A common stock pursuant to the terms of the plan.

On September 5, 2024, Tom Muniz, Chief Technology Officer of the Company, adopted a trading arrangement for the sale of the Company’s Class A common stock, which expires September 5, 2025, and provides for the sale of up to 588,428 shares of Class A common stock pursuant to the terms of the plan.

On September 5, 2024, Eric Lentell, General Counsel of the Company, adopted a trading arrangement for the sale of the Company’s Class A common stock, which expires December 31, 2024, and provides for the sale of up to 78,442 shares of Class A common stock pursuant to the terms of the plan.

On September 13, 2024, Michael Spellacy, amember of the Board of Directors of the Company, adopted a trading arrangement for the sale of the Company’s Class A common stock held by Mr. Spellacy and Achill, LLC, which is controlled by Mr. Spellacy. The trading arrangement expires on September 12, 2025 and provides for the sale of up to 254,513 shares of Class A common stock held by Mr. Spellacy and 278,487 shares held by Achill Holdings, LLC, pursuant to the terms of the plan.

All of the trading arrangements listed above are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). Transactions made pursuant to such trading arrangements will be disclosed publicly in future Section 16 filings to the extent required by law.