X0609 4 2026-09-24 0 0001757715 Aterian, Inc. ATER 0001932843 Lazar David E. true PH THE TOWERS, TOWER 100, APT 44, WINSTON CHURCHILL PANAMA CITY PANAMA R1 07196 PANAMA 1 1 0 1 Chief Executive Officer Former 10% Owner 0 Common Stock 2026-09-24 4 C 0 1300530 0 A 8038030 D Series AAA Convertible Non-Redeemable Preferred Stock 0.0148 2026-09-25 4 S 0 1750000 6.703 D 2026-07-17 Common Stock 236425000 0 D Series AA Convertible Non-Redeemable Preferred Stock 0.2597 2026-09-25 4 S 0 706100 0.382 D 2026-07-17 Common Stock 5436970 0 D Series AA Convertible Non-Redeemable Preferred Stock 0 2026-09-24 4 C 0 168900 0 D 2026-07-17 Common Stock 1300530 706100 D On September 25, 2026, the Reporting Person converted 168,900 shares of the Series AA Convertible Non-Redeemable Preferred Stock (the "Series AA Preferred Shares") for no additional consideration. Each of the Series AA Preferred Shares and the Series AAA Convertible Non-Redeemable Preferred Stock (the "Series AAA Preferred Shares") are perpetual and therefore have no expiration date. On September 25, 2026, the Reporting Person sold 706,100 Series AA Preferred Shares and 1,750,000 Series AAA Preferred Shares to multiple purchasers for an aggregate purchase price of $12,000,000, pursuant to a Securities Purchase Agreement. The aggregate purchase price was not allocated between the Series AA Preferred Shares and the Series AAA Preferred Shares in the Securities Purchase Agreement; the per-share prices reported reflect an allocation of the aggregate purchase price between the two series pro rata based on the number of shares of Common Stock underlying each series. /s/ David E. Lazar 2026-09-29