X0609 4 2026-09-21 0001828805 Aeluma, Inc. ALMU 0001869626 Klamkin Jonathan false 27 CASTILIAN DRIVE GOLETA CA 93117 true true false false Chief Executive Officer 1 Common Stock 2026-09-21 4 S 0 100000 13.3532 D 1226995 I By Family Trust Common Stock 2026-09-21 4 A 0 31771 0 A 34174 D Common Stock 2026-09-21 4 A 0 12675 0 A 46849 D Common Stock 2026-09-21 4 F 0 4547 13.61 D 42302 D Stock Option (right to buy) 13.61 2026-09-21 4 A 0 75135 0 A 2036-09-21 Common Stock 75135 75135 D Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 23, 2026. Reflects the weighted average price of 100,000 shares of common stock of Aeluma, Inc. sold by the reporting person in multiple transactions on September 21, 2026 with sale prices ranging from $12.70 to $13.65 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Restricted stock units ("RSUs") scheduled to vest and settle into an equal number of shares of common stock with respect to 25% of the shares on September 30, 2027 and thereafter in 12 substantially equivalent quarterly increments on the last day of each calendar quarter. Stock award in lieu of cash bonus. Stock options scheduled to vest with respect to 25% of the shares on first anniversary of the grant date, and thereafter in 36 substantially equivalent increments on each monthly anniversary of the grant date. /s/ Joshua L. Colburn, Attorney-in-Fact 2026-09-23