Form 4 Filing for Teri L. Lawver

Teri L. Lawver, a director at Altimmune, Inc., was granted 48,800 stock options on May 1, 2026. These options, granted under the company's non-employee director compensation policy, have an exercise price of $2.82 and an expiration date of May 1, 2036. The options vest in equal monthly installments over 12 months, starting May 1, 2026, contingent upon continued service. Following the grant, Ms. Lawver holds 48,800 shares underlying these options.