X0508 4 2023-11-15 0 0001824502 Archer Aviation Inc. ACHR 0001797669 Perkins Tosha C/O ARCHER AVIATION INC. 190 WEST TASMAN DRIVE SAN JOSE CA 95134 0 1 0 0 Chief People Officer 0 Class A Common Stock 2023-11-15 4 M 0 25000 0.00 A 212236 D Class A Common Stock 2023-11-15 4 M 0 32457 0.00 A 244693 D Class A Common Stock 2023-11-15 4 M 0 19797 0.00 A 264490 D Class A Common Stock 2023-11-16 4 F 0 30625 6.2167 D 233865 D Restricted Stock Units 2023-11-15 4 M 0 25000 0.00 D Class A Common Stock 25000 75000 D Restricted Stock Units 2023-11-15 4 M 0 32457 0.00 D Class A Common Stock 32457 324566 D Restricted Stock Units 2023-11-15 4 M 0 19797 0.00 D Class A Common Stock 19797 257353 D Represents shares sold in satisfaction of the reporting person's tax liability arising as a result of the settlement of restricted stock units. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.105 to $6.405, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer. The award vested or vests as to: (i) 1/3 of the total award on August 15, 2022; and (ii) 1/12 of the total award quarterly thereafter on each of November 15th, March 1st, May 15th, and August 15th. These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date. The award vested or vests as to: (i) 1/4 of the total award on May 15, 2023; and (ii) 1/16 of the total award quarterly thereafter on each of August 15th, November 15th, March 1st, and May 15th. The award vested or vests as to 1/16th of the total award quarterly on May 15, 2023 and thereafter on each of August 15th, November 15th, March 1st and May 15th. /s/ Andy Missan, Attorney-in-Fact for Tosha Perkins 2023-11-17