Sutro Biopharma Presents Data from Dose-Optimization Portion of REFRαME-O1 Trial in Patients with Platinum Resistant Ovarian Cancer at SGO 2025. For more info, ir.sutrobio.com/news-events/ne…

Today, we celebrate the incredible administrative professionals at Sutro Biopharma who keep our teams connected, organized, and moving forward every day. Thank you for being an essential part of our mission to bring innovative cancer therapies to our patients.

Sutro Biopharma to Highlight its Next-Generation Exatecan and Dual-Payload ADC Programs in Presentations at AACR 2025. For more info, ir.sutrobio.com/news-events/ne… #SutroBio $STRO #AACR25

Sutro Biopharma to Participate in The Citizens JMP Life Sciences Conference on May 8th at 9:30am ET and Bank of America Securities 2025 Health Care Conference on May 13th at 4:35pm PT. For more info, ir.sutrobio.com/news-events/ne… $STRO #SutroBio #BofA #CancerResearch #CancerTherapeutics

Pleased to announce, Jane Chung, CEO will participate in a Fireside Chat at The Citizens JMP Life Sciences Conference held Thursday, May 8th at 9:30AM ET / 6:30AM PT. Click the link to register and join the webcast: wsw.com/webcast/jmp65/… #SutroBio $STRO #Biotech #FiresideChat

This May, Sutro celebrates Jewish American and AAPI Heritage Month. We honor the rich cultures and invaluable contributions of these communities — in biotech and beyond. Diversity drives discovery. 🌸✡️ #HeritageMonth #JewishAmericanHeritageMonth #AAPIHeritageMonth #SutroBio

Excited to announce, Jane Chung, Chief Executive Officer, Sutro Biopharma, will participate in a Fireside Chat at the TD Cowen’s 6th Annual Oncology Innovation Summit on May 28th at 11:00am ET and Jefferies 2025 Global Healthcare Conference on June 4th at 11:05am ET. Click here

Pleased to announce, Jane Chung, Chief Executive Officer, will participate at the @BofA Securities 2025 Health Care Conference on Tuesday, May 13th at 4:35 PM PT / 7:35 PM ET. 🔗 Click the link to register and join the live webcast: bofa.veracast.com/webcasts/bofa/… #BofA #SutroBio

Excited to share a new review in mAbs highlighting the evolving science and promise of homogeneous dual-payload ADCs. Exploring site-specific conjugation strategies and the potential to enhance efficacy and overcome resistance in cancer therapy. Special thanks to Janice

May is #MentalHealthAwarenessMonth — a time to prioritize well-being and foster compassion. You are not alone. Together, we can make a meaningful difference. 💚 #EndTheStigma #MentalHealthMatters #SutroBio $STRO

Excited to announce, Hans-Peter Gerber, Chief Scientific Officer, Sutro Biopharma, presented at the 21st Annual #PEGS Boston Summit. His insights contributed to an exciting and forward-looking discussion on the future of cancer therapeutics. Click the link to learn more:

On this Memorial Day, we honor the brave men and women who gave their lives in service to our country. Their courage, sacrifice, and dedication will always be remembered. We stand together in gratitude. 🇺🇸 #MemorialDay #HonorAndRemember #NeverForget #SutroBio $STRO

Excited to announce, Jane Chung, Chief Executive Officer and Hans-Peter Gerber, Chief Scientific Officer will participate at the TD Cowen’s 6th Annual Oncology Innovation Summit on Wednesday, May 28th at 11:00am ET. Click here to register and join the webcast:

Sutro Biopharma Appoints Greg Chow as Chief Financial Officer. For more info, ir.sutrobio.com/news-events/ne… #SutroBio $STRO #CancerTherapeutics #CancerResearch

Pleased to announce, Jane Chung, Chief Executive Officer, will participate at the Jefferies Global Healthcare Conference on June 4th at 11:05AM ET. 🔗 Click the link to register and join the live webcast: wsw.com/webcast/jeff31… #JefferiesHealthcare #SutroBio $STRO

This PRIDE Month, we celebrate the diversity of our LGBTQ+ community and reaffirm our commitment to fostering an inclusive environment for all. 🌟 Let's continue to stand together, support each other, and champion equality. 🌈 #SutroBio $STRO #PrideMonth #Inclusion #Diversity

Meet Sutro Biopharma's leadership team at BIO2025, June 16-19 in Boston! Let’s connect through the BIO Partnering™ system and explore how we can drive meaningful change together. #BIO2025

At Sutro, we are committed to fostering equity, inclusion, and progress in science and society. #Juneteenth #FreedomDay #EquityInSTEM #SutroBio

Happy 4th of July! Wishing you a day filled with celebration, reflection, and connection. Stay safe and enjoy the holiday! #SutroBio $STRO #IndependenceDay #July4th 🇺🇸🎇