Lightspeed Venture Partners AI portfolio in San Francisco

Xaira Therapeutics is an integrated biotechnology company driving advances in artificial intelligence to learn the language of life and transform how we treat disease. We seek to rethink the drug discovery and development process from end-to-end by bringing together leading talent across three core areas: machine learning research to better understand biology, expansive data generation to power new models, and robust therapeutic product development to treat disease. Xaira is headquartered in the San Francisco Bay Area.Please be advised that we will never ask for personal information or any financial commitment from a candidate as a pre-employment requirement. All legitimate Xaira communication regarding our recruitment processes comes from email addresses ending with @xaira.com or through recognized professional networks, such as LinkedIn. To avoid any potential fraudulent activity, please make sure to apply only through Xaira's official Careers page: https://www.xaira.com/work-with-us

• Series A
• 214 employees
• Founded 2023

Olema Oncology is a cancer medicines company dedicated to impacting breast cancer and beyond. Our lead program, palazestrant (OP-1250), is a differentiated oral medicine known as a complete estrogen receptor antagonist (CERAN) initially in development for metastatic breast cancer. Our pipeline also includes OP-3136, a potent, selective oral inhibitor of the KAT6 pathway. At Olema, we are building a focused team committed to our mission with intention and clarity. Working alongside a talented, passionate group of leaders and advisors, we strive to create better medicines that aim to help patients feel better, longer. For more information, visit us at www.olema.com.Important Notice: Fraudulent Recruiting Activities We are aware of employment scams where individuals pose as representatives of Olema Oncology and make false use of our company name to defraud job seekers. To protect yourself, please note that Olema’s official email addresses end in @olema.com. Our official corporate website is olema.com; our careers page is olema.com/careers; our LinkedIn page is linkedin.com/company/olema-oncology. Please visit these links for official information from Olema. Communication from any other variant is fraudulent. Olema does not conduct interviews via text message/messaging platforms, will not ask you to download anything as part of your interview, will never request any form of payment, provide upfront payments of any kind, and does not make job offers without an in-person interview.

• Post-IPO equity
• 176 employees
• Founded 2007

Created by researchers from UC Berkeley, Arena (formerly LMArena) is a community-powered platform to measure and advance the frontier of AI for real-world use. Tens of millions of builders, researchers, and creative professionals come to Arena to use frontier models and give feedback on their responses, shaping a public leaderboard grounded in real-world use.

• Series A
• 70 employees
• Founded 2025

3T is an immunotherapy company developing next-generation, transformative therapies for the treatment of solid tumors and other immune-mediated diseases in broad patient populations.By leveraging the power of the immune system to recognize, target, and destroy cancer cells, 3T's technology is advancing the development of next-generation therapies that have the potential to be safer, more effective, and even curative for difficult-to-treat cancers.

• Series A
• 24 employees
• Founded 2017