Exhibit 99.1

RAPT Therapeutics Reports Third Quarter 2020 Financial Results
SOUTH SAN FRANCISCO, Calif. – November 16, 2020 – RAPT Therapeutics, Inc. (Nasdaq: RAPT), a clinical-stage, immunology-based biopharmaceutical company focused on discovering, developing and commercializing oral small molecule therapies for patients with significant unmet needs in oncology and inflammatory diseases, today reported financial results for the third quarter ended September 30, 2020 and provided an update on recent operational and business progress.
“Earlier today, we reported positive initial data from our ongoing Phase 1/2 clinical trial evaluating FLX475 in multiple cancer indications,” said Brian Wong, M.D., Ph.D., President and CEO of RAPT Therapeutics. “With the advancement of this program and continued enrollment for our ongoing Phase 1b study of RPT193 in atopic dermatitis, which we now expect to read out in the first half of 2021, we are well positioned for multiple catalysts in 2021.”
Financial Results for the Third Quarter and Nine Months Ended September 30, 2020
Third Quarter Ended September 30, 2020
Net loss for the third quarter of 2020 was $14.6 million, compared to $10.0 million for the third quarter of 2019.
Research and development expenses for the third quarter of 2020 were $12.9 million, compared to $8.6 million for the same period in 2019 due to increased clinical costs for FLX475 and RPT193, increased personnel costs and stock-based compensation expense, an increase in preclinical program costs and laboratory supplies.
General and administrative expenses for the third quarter of 2020 were $3.2 million, compared to $1.7 million for the same period of 2019. The increase was primarily due to an increase in stock-based compensation expense, personnel costs, legal and accounting fees and insurance expense offset by a decrease in consulting costs.
Nine Months Ended September 30, 2020
Net loss for the nine months ended September 30, 2020 was $40.2 million, compared to $29.8 million for the same period in 2019.
Research and development expenses for the nine months ended September 30, 2020 were $34.6 million, compared to $24.7 million for the same period in 2019. The increase was primarily due to an increase in clinical costs relating to FLX475 and RPT193, increased preclinical program costs as well as increased stock-based compensation and personnel expenses, offset by decreases in lab supplies and travel costs.
General and administrative expenses for the nine months ended September 30, 2020 were $9.3 million, compared to $6.1 million for the same period of 2019. The increase in general and administrative expenses was primarily due to increased stock-based compensation expense, increased personnel costs, an increase in legal and accounting fees as well as insurance expense offset by a decrease in travel and consulting costs.
As of September 30, 2020, we had cash and cash equivalents and marketable securities of $122.8 million.