Estrella’s headquarters office is located at: 5858 Horton Street, Suite 370 Emeryville, CA 94608

Estrella was founded in 2022 as a Delaware corporation.

Estrella completed the business combination with TradeUp Acquisition Corp. in September 2023, and became a publicly listed company in October 2023.

Estrella is listed on the Nasdaq Capital Market under the symbol ESLA.

Estrella’s fiscal year end is June 30.

Macias Gini & O’Connell, LLP 60 South Market, Suite 1500 San Jose, CA 95113-2358 408-418-4000

Winston & Strawn LLP 800 Capitol Street Suite 2400 Houston, TX 77002-2925 713-651-2600

Please email Investor Relations at IR@estrellabio.com (IR@estrellabio.com)for assistance with other questions.