Net loss for the quarter ended March 31, 2023, was $28.3 million, as compared to $23.0 million for same period of the prior year. The increase in net loss related primarily to Olema’s continued investment in OP-1250, increased spending on research and development (R&D) activities, and personnel-related costs, including a one-time restructuring charge of $2.8 million. The increase in R&D spending was partially offset by a decrease in general and administrative (G&A) costs.
GAAP R&D expenses were $22.8 million for the quarter ended March 31, 2023, as compared to $16.0 million for the quarter ended March 31, 2022. The increase in R&D expenses was primarily related to increases in advancing ongoing clinical studies of OP-1250 and associated manufacturing costs, nonclinical research and discovery program activities, and personnel-related expenses, including a one-time restructuring charge of $1.8 million.
Non-GAAP R&D expenses were $19.7 million for the quarter ended March 31, 2023, excluding $3.1 million non-cash stock-based compensation expense. Non-GAAP R&D expenses were $12.9 million for the quarter ended March 31, 2022, respectively, excluding $3.1 million non-cash stock-based compensation expense, respectively. A reconciliation of GAAP to non-GAAP financial measures used in this press release can be found at the end of this press release.
GAAP G&A expenses were $6.8 million for the quarter ended March 31, 2023, as compared to $7.2 million for the quarter ended March 31, 2022. The decrease in G&A expenses was primarily due to lower corporate costs, and personnel-related expenses, including non-cash stock-based compensation expense. The decrease in spending was partially offset by a one-time restructuring charge of $1.0 million.
Non-GAAP G&A expenses were $5.2 million for the quarter ended March 31, 2023, excluding $1.5 million non-cash stock-based compensation expense. Non-GAAP G&A expenses were $5.3 million for the quarter ended March 31, 2022, excluding $1.9 million non-cash stock-based compensation expense. A reconciliation of GAAP to non-GAAP financial measures used in this press release can be found at the end of this press release.
About Olema Oncology
Olema Oncology is a clinical-stage biopharmaceutical company focused on the discovery, development and commercialization of targeted therapies for women’s cancers. Olema’s lead product candidate, OP-1250, is a proprietary, orally-available small molecule with dual activity as both a complete estrogen receptor (ER) antagonist (CERAN) and a selective ER degrader (SERD). It is currently being evaluated both as a single agent in an ongoing Phase 2 clinical trial, and in combination with CDK4/6 inhibitors (palbociclib and ribociclib) and a PI3Ka inhibitor (alpelisib), in patients with recurrent, locally advanced or metastatic ER-positive (ER+), human epidermal growth factor receptor 2-negative (HER2-) breast cancer. OP-1250 has been granted FDA Fast Track designation for the treatment of ER+/HER2- metastatic breast cancer that has progressed following one or more lines of endocrine therapy with at least one line given in combination with a CDK4/6 inhibitor. Olema is headquartered in San Francisco and has operations in Cambridge, Massachusetts.