Multithread effectively and personalize outreach to convert deals faster
Elevate social presence and drive business growth from social media
Identify and prioritize high-intent leads, and improve sales effectiveness
Find and connect with ICP attendees, and improve event outcomes
Sierra Oncology was a commercial-stage biopharmaceutical company dedicated to delivering targeted therapies for rare cancers. Their lead candidate, momelotinib, a potent, selective, and orally-bioavailable JAK1, JAK2, and ACVR1 inhibitor, showed promising results for myelofibrosis patients with anemia. The company's mission was to address unmet medical needs in hematology and oncology. In July 2022, Sierra Oncology was acquired by GSK, with momelotinib (now marketed as Ojjaara® in the US and Omjjara® in the EU) becoming a key part of GSK's specialty medicines portfolio.
Served as the primary hub for corporate operations, research and development strategy, clinical trial management, and business development activities before its acquisition by GSK.
Located in a modern office park in the San Francisco Bay Area, providing access to a rich biotech ecosystem. The facility was typical of leased office spaces for biopharmaceutical companies of its size.
Reported to have a focused, science-driven, and collaborative work culture, characteristic of late-stage biotech companies. Employees were dedicated to advancing treatments for patients with rare cancers and addressing unmet medical needs.
The San Mateo headquarters was central to Sierra Oncology's operations during its critical phase of developing momelotinib, navigating global clinical trials, and preparing for regulatory approval and commercialization, ultimately leading to its acquisition by GSK.
Prior to its acquisition by GSK, Sierra Oncology's global presence was primarily defined by its extensive clinical trial programs for momelotinib. These trials were conducted across numerous sites in North America (USA and Canada), Europe (various countries), and the Asia-Pacific region (e.g., Australia). The company was actively preparing for global commercialization, engaging with regulatory authorities in key markets worldwide.
1820 Gateway Drive, Suite 110
San Mateo
CA
USA
Address: Historically, a registered address was maintained, e.g., 720 Robson Street, Suite 510, Vancouver, BC, V6Z 1A1 (for Sierra Oncology Canada Inc.)
Facilitated Canadian corporate registration and compliance. Provided a point of contact within the Canadian life sciences sector and supported any Canada-specific research or clinical operations.
Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.
As of April 2025, Sierra Oncology' leadership includes:
Sierra Oncology has been backed by several prominent investors over the years, including:
The most significant executive event for Sierra Oncology was its acquisition by GSK in July 2022, leading to the transition of its leadership team as the company was integrated. A key hire before the acquisition was Sukhi Jagpal as COO in early 2022.
Discover the tools Sierra Oncology uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
Prior to its acquisition by GSK in July 2022, Sierra Oncology likely used common corporate email formats. A frequently observed pattern for companies of this nature is [first_initial][last]@domain.com. The @sierraoncology.com domain is no longer actively used for widespread new employee communication post-acquisition.
[first_initial][last]@sierraoncology.com
Format
jdoe@sierraoncology.com
Example
75%
Success rate
GSK plc • January 26, 2024
The European Commission granted marketing authorisation for Omjjara (momelotinib) for treating disease-related splenomegaly or symptoms in adult myelofibrosis patients with moderate to severe anaemia. This drug was originally developed by Sierra Oncology....more
GSK plc • September 15, 2023
The US Food and Drug Administration (FDA) approved Ojjaara (momelotinib) for the treatment of myelofibrosis in adult patients with anemia. This marks a significant milestone for the drug developed by Sierra Oncology and acquired by GSK....more
GSK plc • July 1, 2022
GSK plc announced it had completed its acquisition of Sierra Oncology, Inc., for $55 per share of common stock in cash, representing an approximate total equity value of $1.9 billion. Sierra Oncology was focused on targeted therapies for rare cancers....more
Sierra Oncology / GSK plc • April 13, 2022
GSK plc and Sierra Oncology, Inc. announced they entered into a definitive agreement under which GSK will acquire Sierra Oncology, a California-based, late-stage biopharmaceutical company focused on targeted therapies for rare cancers, for $1.9 billion....more
See where a company’s workforce is located, by country or region.
View past and recent funding rounds with amounts and investors.
Understand company revenue estimates and financial scale.
Track active roles and hiring trends to spot growth signals.
Discover what a company offers—products, platforms, and solutions.
Get the company’s official SIC and NAICS classifications.
Analyze visitor volume, engagement, and top traffic sources.
Explore LinkedIn, Twitter, and other active social profiles.
Identify top competitors based on similar business traits.
Explore companies in depth — from the tech they use to recent funding, hiring trends, and buyer signals — all in one powerful view.
Highperformr AI helps you surface the right accounts and enrich your CRM with verified company and contact insights, so your teams can prioritize and engage faster.
Thousands of companies, including Sierra Oncology, are just a search away.