Forecasting Manager

Site Name: Durham Blackwell Street, Philadelphia Walnut Street
Posted Date: Mar 5 2026
Forecasting Manager – General Medicines Business Unit
This role supports the US General Medicines Forecasting team within US Commercial Finance to establish and maintain accurate and insight driven gross sales and patient forecasts in close collaboration with a broad spectrum of functions within the US. This role requires strong analytical skills and a wide variety of methodological approaches to forecasting as well as in-depth understanding of the US pharmaceutical market dynamics.
This role will provide YOU the opportunity to build your expertise in forecasting, commercial insights, and pharmaceutical business acumen to progress YOUR career. These responsibilities include some of the following…

Establish, document, and maintain in-line products financial and manufacturing volume forecasts and annually revise Long-Range Forecast, in partnership with stakeholders.
Maintain SKU level forecasts for General Medicines brands.
Evaluate US market trends, competitor product landscape and competitive positioning as part of US Forecast development.
Develop, document and present US Forecast, assumptions, opportunities, and risks, to multiple management levels.
Ensure accuracy of forecasts through industry standard accuracy and bias metrics; identify corrective actions as appropriate.
Support US financial submissions and quarterly earnings call, as needed.
Collaborate and partner effectively with various stakeholders across the enterprise, including Marketing, Commercial Insight & Analytics and Managed Market teams, support senior management requests.

Why you?
Basic Qualifications:
We are looking for professionals with these required skills to achieve our goals:

BS/BA degree in Finance, Analytics, Statistics, Business, or related area
5 years of post-degree experience in the following:
Utilizing and maintaining financial, analytics or gross sales forecast models with multiple variables and event modeling.
Analyzing market data and trends, assessing financial/commercial impacts and identifying risks and opportunities.
Create/modify reports/dashboards/presentations for forecast cycles
Proficiency in MS Excel working with substantial amounts of data, financial and/or analytical data modeling involving multiple inputs.

Preferred Qualifications:
If you have the following characteristics, it would be a plus:

Experience providing clear and concise messaging to multiple management levels.
Proficiency in MS PowerPoint
Strong learning agility to build business acumen.
Demonstrated communication and presentation skills.
Proven collaboration skills and able to work effectively across a matrix environment.
Ability to work independently and prioritize effectively.
Experience in pharma, biotech or alike
Familiarity and experience using digital capabilities to enhance automation and standardization.

#GSK- LI
Please visit GSK US Benefits Summary to learn more about the comprehensive benefits program GSK offers US employees.
Why GSK?
Uniting science, technology and talent to get ahead of disease together.
GSK is a global biopharma company with a purpose to unite science, technology and talent to get ahead of disease together. We aim to positively impact the health of 2.5 billion people by the end of the decade, as a successful, growing company where people can thrive. We get ahead of disease by preventing and treating it with innovation in specialty medicines and vaccines. We focus on four therapeutic areas: respiratory, immunology and inflammation; oncology; HIV; and infectious diseases – to impact health at scale.
People and patients around the world count on the medicines and vaccines we make, so we’re committed to creating an environment where our people can thrive and focus on what matters most. Our culture of being ambitious for patients, accountable for impact and doing the right thing is the foundation for how, together, we deliver for patients, shareholders and our people.
If you require an accommodation or other assistance to apply for a job at GSK, please contact the appropriate Recruitment Staff by emailing us at - usrecruitment.adjustments@gsk.com
GSK is an Equal Opportunity Employer. This ensures that all qualified applicants will receive equal consideration for employment without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), parental status, national origin, age, disability, genetic information (including family medical history), military service or any basis prohibited under federal, state or local law.
Important notice to Employment businesses/ Agencies
GSK does not accept referrals from employment businesses and/or employment agencies in respect of the vacancies posted on this site. All employment businesses/agencies are required to contact GSK's commercial and general procurement/human resources department to obtain prior written authorization before referring any candidates to GSK. The obtaining of prior written authorization is a condition precedent to any agreement (verbal or written) between the employment business/ agency and GSK. In the absence of such written authorization being obtained any actions undertaken by the employment business/agency shall be deemed to have been performed without the consent or contractual agreement of GSK. GSK shall therefore not be liable for any fees arising from such actions or any fees arising from any referrals by employment businesses/agencies in respect of the vacancies posted on this site.
Please note that if you are a US Licensed Healthcare Professional or Healthcare Professional as defined by the laws of the state issuing your license, GSK may be required to capture and report expenses GSK incurs, on your behalf, in the event you are afforded an interview for employment. This capture of applicable transfers of value is necessary to ensure GSK’s compliance to all federal and state US Transparency requirements. For more information, please visit the Centers for Medicare and Medicaid Services (CMS) website at https://openpaymentsdata.cms.gov/