2024 CSG Global Impact Report

Purpose-Driven Progress 2024 GLOBAL IMPACT REPORT

Table of Contents

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Message from the CEO

3

About CSG

4

Employee Experience

8

Inclusion & Impact

19

Environmental Stewardship

31

Global Security

39

Reporting

44

Partnerships

46

2

Message from CEO

About CSG

Employee Experience

MESSAGE FROM THE CEO As we publish our third annual Global Impact Report, I am proud to share the excellent progress CSG continues to make toward our sustainability goals. Since 2019, Team CSG has reduced our carbon emissions by 40%, and we further reduced our carbon footprint in 2024 by optimizing our real estate portfolio, enhancing the energy efficiencies of our data centers and beginning to transition our payment center operations to renewable energy sources.

But our commitment does not stop with the environment.

As a purpose-driven, culture-first software-as-a-service (SaaS) company, we are dedicated to making a meaningful difference in the lives of our customers, our employees and our communities.

Team CSG believes that purpose-driven companies consistently outperform. As such, these principles are reflected in how we lead, how we work and how we deliver exceptional value to our customers. By prioritizing employee wellbeing, belonging and inclusion, our global teams— spanning more than 20 countries—reflect the rich tapestry of backgrounds, identities and experiences so that all 5,800+ CSGers can be their true authentic selves.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

We are creating a global culture of sustainability, inclusion and environmental stewardship where every employee is empowered and encouraged to help us achieve our lofty goals.

We are honored to be regularly recognized as an employer of choice, including being named a Great Place to Work in India for the third year in a row.

Team CSG continues to make a meaningful impact in our communities. Last year, CSGers volunteered more than 15,000 hours supporting local community-based organizations and causes important to them. Together with our incredible partners, CSGers worldwide are backing social entrepreneurs, advancing education in our communities and empowering future generations.

As I reflect on the important strides we have made toward a cleaner environment, being a more caring employer and impacting our communities in more meaningful ways, I know the best of CSG is yet to come. Our commitment is unwavering, and together, we will make a lasting difference in the world.

Brian Shepherd President & Chief Executive Officer

Thank you for being an essential part of our journey.

3

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

IMPACT

INSPIRATION

INTEGRITY

Mission & Guiding Principles

Environmental Stewardship

Global Security

Reporting

Partnerships

By channeling the power of all, we make ordinary

customer and employee experiences extraordinary.

BE AUTHENTIC

BE A TRUSTED TEAM PLAYER

BE SUPPORTIVE

Value, support and respect each individual’s true self. Speak truth with courage and humility.

Focus on team success over sub-unit success.

Seek out input and experience through crossfunctional collaboration to enrich debates and reach the best decision. Honestly share input, respectfully challenge and disagree and then wholly commit once a decision is reached.

Empower individuals to contribute fully and authentically to deliver exceptional results. Foster belonging by treating all with respect and provide access to career growth.

BE BOLD

BE INVENTIVE

BE AGILE

Think and dream bigger. Ambitiously extend the limits of what is possible.

Create an environment where employees are supported in taking calculated risks, failing fast and evolving.

Find innovative ways to solve both CSG and our customers' toughest business problems. Bring future-ready solutions into existence by being curious and challenging the status quo.

Move quickly and iterate with a focus on future market and customer needs. Apply a continuous learning and ecosystem mindset to drive ongoing improvement into everything we do, every day.

BE CUSTOMER OBSESSED

BE A GAME CHANGER

BE A DRIVER OF GROWTH

Put customers at the center of everything we do by focusing first on the value we bring them.

Solve our customers' toughest business problems and always deliver on our commitments.

Consistently and tenaciously raise the bar for ourselves and others. Empower others while holding ourselves and each other accountable to meet our goals. Provide regular feedback, coaching, mentoring and development opportunities for all.

Bring a growth mindset to everything we do.

Anticipate and adapt to changing market needs. Dream big and never give up.

Constantly accelerate our organic growth, partnerships and acquisitions.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

4

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Progress with Purpose At CSG, we are taking a mindful and purposeful approach to progress.

Every step is designed to meet our customers' evolving expectations with a fantastic CSG experience. Every interaction is grounded in earning our customers' trust and fostering a workplace where our people thrive—all while being good stewards of our planet.

As a purpose-driven, high-growth SaaS company, CSG is proud to help some of the world’s most recognizable brands overcome their biggest business challenges. We empower global companies to stay ahead in today’s fast-paced digital economy and provide solutions that deliver exceptional customer experiences while creating a lasting positive impact on the world.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

5

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Driven to Excellence: 2024 Awards & Recognition At CSG, we know hard work is its own reward, but that doesn’t mean we aren’t honored to be recognized for our innovation and excellence.

In 2024, CSG received awards and recognition worldwide. From being distinguished as an excellent place to work to receiving acknowledgment of our sustainable practices, we are proud to have earned several accolades last year.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

6

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

2024 Awards & Recognition BUSINESS ACCOLADES

IMPACT AWARDS

Forrester Wave Leader

BIG Innovation Award

2PayTech Awards USA

Kaleido Champion Roaming Vendor

Kaleido High-Flyer Roaming Vendor

TSG API Best of Breed Awards

Forrester Wave Leader

Kaleido Champion Roaming Vendor

BIG Innovation Award

Kaleido High-Flyer Roaming Vendor

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

2PayTech Awards USA

TSG API Best of Breed Awards

Juniper Future Digital Awards

Juniper Future Digital Awards

Real Transaction Metric Awards

Real Transaction Metric Awards

India's Best Workplaces for Women

India's Best Workplaces for Women

Certified Great Place to Work India

Certified Great Place to Work India

India’s Best Companies To Work

India’s Best Companies To Work 7

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Employee Experience

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

8

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Who Are CSGers?

Career Development: Empowering Every Step of the Journey We know that career growth is a shared commitment—a journey that’s driven by our people’s passions and ambitions. From the moment they join our team, CSGers are empowered to make an impact and equipped with the tools, resources and guidance to shape their future. With dedicated mentors, ongoing skill development and a supportive community of peers, we ensure every employee can take charge of their career path.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

CSGers are fearlessly committed and connected employee, high on integrity and low on ego. They make us who we are: the easiest company to do business with and the best place to work.

What Success Means at CSG At CSG, we’ve embraced the power of collaboration, and it’s proven to be one of the driving forces behind our success.

Our teams are committed to finding ways to solve some of the toughest business problems together. We foster an environment where CSGers are empowered to think and dream bigger.

Fostering Connected Workplace We understand flexibility is not just about location—it’s about enabling our team to stay connected and engaged, no matter where they are. Through collaboration tools, regular check-ins and a focus on collective action, we’ve built a culture that values inclusivity and drives shared success. Our people lead by example, showing up every day to contribute to our thriving, award-winning workplace.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Career Support at Every Level Our Level Up Program equips Directors+ with critical leadership skills. As a key component of CSG’s comprehensive career development strategy, the program fosters leadership growth, peer coaching and enhanced leadership capabilities, preparing directors to drive impact. 246 participants Great leaders lift whole teams. That’s why we offer Skill Up Sessions to target timely learning opportunities for People Managers on topics ranging from how to conduct effective performance reviews to hiring for potential. 3k+ participants

LEVEL UP FOR DIRECTORS+

SKILL UP FOR PEOPLE LEADERS

Ignited is a cohort-based learning journey grounded in CSG’s Leadership Keystones. It is designed to enhance Frontline Managers’ leadership skills with a focus on growth and self-improvement.

335 participants

IGNITED LEADERSHIP IMPACT

We invest in learning and development for all employees at every step of their professional journey. In 2024, we launched Foundations, an engaging webinar series that explores critical career skills and features personal advice from emerging leaders across the organization.

3k+ participants

STRENGTHENING FOUNDATIONS

Nearly 95% of CSG employees engaged with the Degreed Learning Experience Platform, logging 182k+ learning hours to fuel career development and build critical skills at scale.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

FUELING GROWTH THROUGH DEGREED

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Cultivating Leadership Through Connection We recognize the success of our people and empower them to reach even greater achievements.

In 2024, we strengthened two key programs—the Emerging Leaders and Engage Mentorship programs—to identify and nurture our critical talent.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

11

Message from CEO

About CSG

Employee Experience

Emerging Leaders Nominated managers are committed to developing their business acumen and connecting with similarly motivated peers. The program offers dynamic coaching to each participant, including a personalized training plan tailored to their unique strengths, access to senior-level learnings and one-on-one mentorship opportunities.

Inclusion & Impact

Environmental Stewardship

58

2024 EMERGING LEADERS 142 total participants since the program began.

Global Security

Reporting

Partnerships

47 MENTEES ACROSS THREE COHORTS OF PARTICIPANTS

CSG’s Emerging Leaders are already top performers. However, the program helps these individuals further develop and thrive, strengthening the pipeline of future leaders at CSG.

Engage Mentorship Participants partake in a six-month mentorship program aimed at accelerating their leadership skills. They receive 1:1 mentorship from a senior leadership team member and participate in group activities that feature guest speakers on Leadership Keystones. In 2024, 28 senior leaders have mentored 47 CSGers across three cohorts of participants.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Experiencing the real global presence of CSG as part of the Emerging Leaders program opens your mind to different ways of seeing the issues and opportunities. It invites us to bring a collaborative mindset to the table and respect different ideas and experiences. Through Emerging Leaders, I feel seen, appreciated and connected to CSG’s mission and community.

— Víctor Rodríguez Molano, Product Marketing Manager, CSG Forte

12

Message from CEO

About CSG

Employee Wellbeing Matters at CSG Integrity is one of our guiding principles.

We work to do what’s right for our customers and our people—and we expect all CSGers to do the same.

No one can bring their best without beginning with a firm foundation of wellness. At CSG, we prioritize four pillars of wellbeing, providing CSGers benefits and resources to help strengthen and support employees holistically.

EMPLOYEE WELLBEING SCORE

76

2 POINTS ABOVE THE TECH BENCHMARK (74)

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

MENTAL HEALTH

PHYSICAL FITNESS

CSG offers 24/7 employee support programs and webinars focused on "Understanding and Managing Mental Health.”

CSGers can access webinars on nutrition and mindfulness as well as outdoor activities to boost energy while enhancing cognitive function and overall mood.

COMMUNITY CONNECTIONS

FINANCIAL GUIDANCE

Employees connect through virtual networking groups and participated in volunteer opportunities to engage with their peers and make meaningful contributions to their communities.

Employees access valuable insights through live webinars such as “Developing a Positive Money Mindset.” These sessions provide practical tips and strategies for achieving financial goals.

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Message from CEO

About CSG

Employee Experience

Spotlight on Wellness

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

In 2024, we prioritized mental health as a pillar of wellbeing. By sharing resources and running special programs centered around building mental resilience, we affirmed the importance of holistic health and invited our people to prioritize theirs.

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Setting the Standard for Workplace Excellence We are pleased to again be certified as a Great Place to Work for 2024. For the third year, the Great Place to Work Institute featured CSG among India’s Top 100 “Best Companies To Work For”. This designation honors leading companies that provide an exceptional employee experience, foster a culture of trust and demonstrate a deep commitment to employee welfare.

For Mental Health Awareness Month, CSG encouraged all employees to prioritize their wellbeing. Across three company-wide sessions on the theme of “Learn, Act, Advocate,” we hosted a webinar series dedicated to understanding, improving and evangelizing mental health.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

CSG was further distinguished as one of India’s Best Workplaces for Women and Best Places to Work for People with Disabilities in India. The recognition is a testament to how CSG appreciates and celebrates employees worldwide.

CSG culture and values are unique, and every leader walks the talk in line with the Leadership Keystones. The vision, energy and shared beliefs that the leadership team carries are contagious, which creates a highly positive work environment.

— Anitha Srinivasaiah, Global Test Director

14

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Breaking Barriers in Bogotá: Women’s Leadership Symposium CSG championed women's career advancement and personal empowerment at the second Annual Women’s Leadership Symposium. The global event convened in Bogotá, Colombia, where nearly 200 CSGers heard inspiring testimonies and valuable lessons from a dynamic speaker lineup, including CSG CEO Brian Shepherd and Digicel Chief Digital Officer Aileen Corrigan.

Gathering at over 8,600 feet above sea level, as well as remotely, attendees shared strategies to build confidence and elevate their careers.

Environmental Stewardship

Global Security

Reporting

Partnerships

It’s a privilege to bring together such a dynamic group of women, each bringing their unique perspectives and experiences to the table.

This is a testament to the power of shared knowledge and creating environments where all voices are heard. Together, we’re shaping a future where leadership knows no boundaries and personal empowerment is within everyone’s reach.

— Robin Woods, Chief People Officer

Topics ranged from building emotional intelligence and leaning into personal strengths and barriers faced by women in the workplace and how to overcome them. Rounding out the day with volunteering at the Bogotá Food Bank and a culture trip to Monserrate, attendees walked away with a renewed sense of purpose. The Leadership Symposium was much more than a celebration of the women in our workforce. It brought us together from all corners of the world to address the barriers that obstruct career progress and offer real approaches to growth and success.

.

200

NEARLY 200 CSGERS ATTENDED AND TUNED IN FOR THE 2ND ANNUAL WOMEN'S LEADERSHIP SYMPOSIUM IN BOGOTÁ, COLOMBIA.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

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Fostering Connection through Employee Belonging Groups Our people are the heart of CSG. Our employees are fearlessly

authentic, boldly inventive and committed team players. When they come together with a shared purpose, great things happen.

Our EBGs catalyze positive change—at CSG, and in their

communities. Led by purpose-driven CSGers, each EBG is

NEW in 2024

motivated by its mission and dedicated to the members it supports. CSG encourages all employees to create connections and find community within our nine EBGs.

.

410

NEW EBG MEMBERS IN 2024

1K+

CSGers INVOLVED WITH EBGs

131

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

EBG EVENTS

Mission: The LEAF (Learning and Empathy Across Faiths) Interfaith EBG is dedicated to fostering mutual respect and understanding by creating space for open, respectful dialogue and education through the deep appreciation, embracement and celebration of our traditions.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

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Mental Health Isn’t One-Size-Fits-All Mental health intersects with various identities and backgrounds, so it shows up in different ways for every individual. At CSG, we understand when employees feel supported in their mental, physical and emotional health, they are more likely to be motivated and creative in their work.

Maternal Mental Health Panel The Mental Health EBG moderated a panel discussion on Maternal Mental Health to raise awareness for the challenges women experience during the perinatal period. Guest speaker Dr. Kelly Boyd, a licensed

psychologist in reproductive counseling, discussed how various mood disorders may appear in women, and four CSG mothers shared their personal stories of pregnancy’s impact on their mental health. The

session wrapped with a list of resources available to new parents seeking support.

Mental Health Month The Black Culture Collective EBG hosted guest speaker

Adriauna Clay-Potts, a licensed professional counselor, to educate CSGers about the unique experience and challenges of Minority Mental Health. She discussed the cultural stigmas, imposter syndrome and societal

factors that disproportionately impact mental well-being.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

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Message from CEO

About CSG

Employee Experience

Mental Health First Aid-Training

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Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

When CSGers want to help others, we give them the tools to do it.

Through qualified CSG Mental Health First Aiders (MHFAiders), we offer specialized training to employees who wish to learn how to:

.

.

.

IDENTIFY

HELP

PROVIDE

REFER

Spot early signs of a crisis

Offer support using an action framework

Give encouragement and resources

Support the person in need with referrals to professional help, if needed.

In 2024, 37 CSGers across 5 countries were trained to serve as Mental Health First Aiders to offer care and resources to coworkers in need of support.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Partnerships

MHFAiders play a vital role in reducing stigma and promoting positive mental health in the workplace and beyond. We are proud to offer this training year-round in support of our employees’ wellbeing.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Inclusion & Impact

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

19

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Making Our Mark In 2024, CSG made significant strides in fostering a culture

rooted in connectedness and authenticity. We created new opportunities for our global community to unite, empowering individuals to contribute to a shared vision of belonging and purpose. This progress is helping us better serve the needs

of all CSGers.

At CSG, we encourage individual expression and empower our

employees to drive meaningful change. We’re proud to be acknowledged as a place where ideas are heard, achievements are celebrated and our collective efforts lead to real impact. We honor the recognition we've received and celebrate the unity

and commitment that made this progress possible.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

What Inclusion Means to Me It means being seen, heard and valued for who we are and what we bring to CSG. It is being invited to the table and bringing others along with us. Inclusion is the ability to have conversations when our opinions differ. It inspires people to speak up because they know they are safe to do so and will be acknowledged and their voice will be amplified. Inclusion is feeling as though I belong and am welcomed for who I am.

— David W. Johnson, Jr. Chief Inclusion Officer

CSG Champion Award: Impact & Inclusion The CSG Champion Award is our most prestigious mark of achievement.

Employees are recognized for delivering outstanding business results and living CSG’s Guiding Principles in the pursuit of excellence. In 2024, we introduced a new award category to commend employees who act as changemakers within the company and their communities: Impact & Inclusion. The new award

applauds CSGers who inspire meaningful impact and cultivate an extraordinary employee experience.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

GLOBAL BELONGING SCORE

76 2 POINTS ABOVE THE TECH BENCHMARK (74)

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

COMMUNITY IMPACT BY THE NUMBERS

Impacting the World Around Us “The power of all”

Building on Our Global Impact Building a sense of belonging and connection among our global workforce is deeply rewarding and builds community connections and impact. Just as employees receive the support to make a difference within CSG, they are empowered to extend that impact beyond our organization.

CSG fosters global impact by generating and supporting volunteerism opportunities that benefit local communities.

In 2024, we continued to create meaningful avenues for engagement with communities around the world. Through volunteerism, our people channel their collective energy into action, addressing challenges and driving local economic development, creating a ripple effect of positive change far beyond the workplace.

180+ COMMUNITY PARTNERS

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

136

EMPLOYEE MATCHING GIFTS

15K+

EMPLOYEE VOLUNTEER HOURS

$500K+ CONTRIBUTIONS

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Message from CEO

About CSG

Employee Experience

Virtual Volunteers Making a Difference In 2024, we continued our successful partnership with We Make Change, a global platform that connects remote volunteers with impactful startups. By collaborating with We Make Change, CSGers leveraged their skills and expertise to support innovative startup projects that address pressing global challenges.

Across four CSG Change Days. Employees have contributed hundreds of hours to various projects.

During our three-year partnership with We Make Change, CSG donated support for 80+ impact-driven organizations around the globe, empowering employees to engage in volunteer activities that promote community development with like-minded entrepreneurs, including Village Solar, Farm Hut and Clean Something for Nothing.

Volunteering virtually offers CSGers a unique opportunity to extend their impact outside their immediate area, empowering them to leverage their expertise and skills.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

2024 IMPACT

27 $173K 106

STARTUPS SUPPORTED

TOTAL IMPACT

CHANGEMAKERS

CSG showed yet again how empowering their teams to volunteer their skills remotely can create real, lasting change in communities across the world. Through Change Days, CSGers have used their expertise to support impact founders addressing challenges from sustainability to digital inclusion.

Participating in the Change Day with CSG has been an incredibly empowering experience for Kosi Africa. The expert guidance we received in leadership development has given us a fresh perspective on effective decision making, delegation and team management.

We are grateful for the support and excited to implement these strategies to transform even more lives.

— Kosi Africa, We Make Change startup

Having partnered with CSG for several years, we are always so impressed by the passion, skill and determination of CSGers to make a difference in the world.

— James Sancto, Co-founder and CEO

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

CSG Joins MTN Group’s Flagship Event CSG has a long history of working with customer MTN Group, Africa’s largest mobile network operator, to provide better experiences for MTN customers. In 2024, we expanded that partnership to help benefit communities in “30 Days of Y’ello Care,”

MTN’s flagship employee volunteerism campaign. Each year, up to 13,000 staff members from across Africa participate in the annual Y’ello Care event, offering their time to help. CSGers rolled up their sleeves to paint, clean, make small repairs and work to improve functionality and aesthetics. This initiative is an example of CSG’s ongoing

efforts to connect employees with local volunteer opportunities. CSGers joined with MTN team members during the 2024 campaign, which focused on bridging the educational divide across MTN’s footprint.

When we renew contracts, our customers see we are not just a business provider. They see we’re not just good at what we do, but we also care about our communities. Our values are aligned.

— Zeta Benjamin, CSG Staff Accountant II

The team painted and cleaned an SOS Children's Village location, which provides services to children without parental care. © 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

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“A Beacon of Hope” CSG’s Bursary and Graduate Programs in South Africa

CSG’s Bursary Program focuses on underrepresented

groups, including women, rural youth and individuals from historically marginalized communities. Additionally,

South Africa faces a pressing skills shortage in numerous sectors, including engineering, healthcare and information technology.

Bursary programs—needs-based financial grant programs—play a crucial role in alleviating this issue by attracting and nurturing talent in critical fields.

CSG’s Bursary Program provides financial support to students from disadvantaged backgrounds to help them pursue professional careers they may not otherwise have access to. Many of our Bursary Program students go on to join our Graduate Program, often becoming permanent employees.

In 2024, 30 students received funding towards their tertiary studies. CSG contributed to these students’ registration fees, tuition, textbooks and traveling costs, as well as computer and data or connectivity costs.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Bursary Program graduates are often motivated to give back to their communities, creating a positive cycle of

mentorship and support.

Receiving this bursary means the world to me, and it's hard to overstate just how much of an impact it will have on my life. It's not merely financial assistance; it’s a beacon of hope and a stepping stone towards achieving my dreams.

— Shadwell, CSG Bursary Program participant

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Now in its eighth year, CSG’s South Africa

During the course of my Graduate Program studies, CSG delivered on their promise of believing in continuous growth. The company's supportive culture makes it an ideal place to work, and I'm grateful for the caring, dedicated team that surrounds me, my managers and colleagues.

— Gift Nkanyani, Graduate Program participant

Graduate Program provides new graduates

with guidance they need to achieve their goals and successfully transition into the workforce.

Under the Graduate Program, CSGers volunteer to mentor and tutor the graduates.

We believe providing a global perspective helps students thrive in an interconnected world. By focusing on clear objectives and creating a

productive learning environment for our graduates, we help them prepare for successful careers that contribute to the advancement of knowledge in society.

We’ve seen many advantages of our South Africa Graduate Program, including cultivating innovation, addressing workforce demands and

improving service delivery. In turn, our mentors benefit from the rewarding experience of working with these talented graduates.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Environmental Stewardship

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CSG’S GRADUATE PROGRAM HOSTED

76

RECENT GRADUATES FOR THEIR FIRST WORKING EXPERIENCE.

26

OF THOSE GRADUATES HAVE BEEN OFFERED PERMANENT EMPLOYMENT AFTER COMPLETING THEIR FIRST 12-MONTH PROGRAM.

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Message from CEO

About CSG

Inclusion & Impact

Employee Experience

Environmental Stewardship

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Global Security

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“BE MY EYES” INITIATIVE In a virtual event, volunteers from CSG helped visually impaired individuals with everyday tasks, such as checking expiration dates on food items, through a mobile app.

Elevating Impact in APAC

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CSGers continue to drive community engagement and social impact in Australia and New Zealand, thanks to the dedication of volunteers who foster a culture of connectedness within CSG and beyond.

CSG's collaboration with WeHero opened unique opportunities for our team to directly improve lives through hands-on initiatives. WeHero specializes in creating meaningful corporate volunteer opportunities that build team engagement and success. Through our partnership with WeHero, CSGers participated in a variety of events that support local communities and bolster engagement among participants.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

“WRITE AWAY LONELINESS” CAMPAIGN

CSGers wrote letters to residents of nursing homes and hospitals to combat loneliness among seniors and build human connections.

Lending a Hand According to World Health Organization estimates, 40 million amputees live in the developing world, and just 5% have access to prosthetic care. One of the events WeHero coordinates and hosts is the Helping Hands initiative, which provides low-cost, lightweight, durable and functional prosthetic hands to anyone who cannot afford existing alternatives. CSGers Martina Tercic and Shavorjn Raveendra Kumar partnered with WeHero to participate in an in-person Helping Hands event. Together, Martina and Shavorin gathered CSGers in Melbourne and Brisbane to help build prosthetic arms, supporting amputees living in more than 80 developing countries.

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Message from CEO

About CSG

Strengthening Community in India through CSG Cares

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

KEY PARTNERSHIPS

CSG has expanded its India employee base broadly and rapidly in the last several years, and we’re

CSG partnered with Vision Empower, a non-profit

committed to providing our growing team with high-

trust that supports visually impaired children by

quality employment that’s fun and rewarding. We

creating tools that foster inclusive education. CSG

understand our potential to make a powerful impact

volunteers created tactile boards for visually

through sharing our energized, award-winning culture.

impaired members of the local community.

Through our CSG Cares India initiatives, we act on our

Continuing the ongoing partnership with Bharat

core values by doing our part drive impact in our

Grameen Mahila Sangh or BGMS (National

communities and support education, empowerment,

Association of Rural Woman India), the world’s

economic prosperity and environmental stewardship.

largest non-governmental organization for rural women. It uplifts and empowers women, children,

In 2024, our dedicated CSG Cares India team continued

older adults and people with disabilities, providing

to lead volunteer efforts, establishing key partnerships

a safe haven and education. CSG has partnered

and making a tangible difference in many lives.

with BGMS since 2020.

CSG has made significant contributions towards the education of destitute and underprivileged children, helping them to mainstream and pursue their dreams.

CSG’s contributions toward nutritional development among children helped support mental and physical improvements and contributed toward overall development of infrastructure.

— Prasanna Chandri, Secretary, BGMS

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

28

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Supporting America’s Heartland community and to each other was on full display in 2024 as they mobilized to help those in need.

MIDWEST TORNADO RELIEF EFFORTS On April 26, 2024, a powerful tornado caused significant the Omaha metro area lost their homes, personal property, pets and more. Local CSGers participated in a 50-Mile

March designed to respond to the immediate needs of veterans in these communities. The volunteers established a fund to support individual and veteran families through micro grants to address day-to-day recovery essentials,

such as hotel stays, food, clothing and other necessities.

Partnerships

$595K

The connections that Nebraska-based CSGers have to their

damage in parts of Nebraska and Iowa. Many residents in

Reporting

CSG was a key supporter of our Tornado Response Fund. Multiple CSG employees participated in the fifth annual 50 Mile March, Operation Noble Watchman, as marchers, volunteers and donors. Our partnership with CSG is so valued and we look forward to continuing to engage CSG's employees.

The Fifth annual 50 Mile March raised more than $595,000, providing funds to support grantmaking efforts and the Community of Hope veterans' campus project.

— Brianne Schuler, Executive Director, 50 Mile March Foundation

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

29

Message from CEO

About CSG

Giving Back in the Heartland Nearly 30 CSGers braved a brisk Nebraska spring day to volunteer with Keep Omaha Beautiful and Food Bank of the Heartland. This group

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

$595K

participated in a local event, dubbed “Rice Rice,

Baby,” which distributed 2,096 pounds of brown rice—enough to feed 1,048 families. CSGers also came together to clean up litter in two high-need areas in Omaha.

This Team CSG effort was amazing, and we were able to leverage CSG’s Volunteer Time Off to take some time to give back to our community.

So fortunate to work for a company that encourages us to take two paid VTO days a year!

— Leah Bryant, Director of Support Services and Communications Lead for CSG’s Pride EBG

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

30

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Environmental Stewardship

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

31

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Advancing Sustainability and Driving Progress Committed to carbon neutrality for Scope 1 and 2 greenhouse gas emissions by 2035

Scope 1 emissions include direct greenhouse gas emissions from sources owned or controlled by CSG, such as emissions from manufacturing facilities or company vehicles.

Scope 2 emissions encapsulate indirect emissions from the consumption of purchased electricity, heat or steam.

40%

Carbon footprint reduction through energy efficiencies, offsets and real estate optimization efforts

The CSG Denver office now provides 90+ covered parking spots with solar panels providing environmental benefits by generating renewable energy and reduced operational costs through energy savings.

Additionally, 4 electric vehicle (EV) charging stations are available to support clean transportation and a more sustainable future.

Procured 527 RECs, reflecting 527 MWh of renewable energy generated. CSG reduced its carbon footprint and offset 232 metric tons of CO2e in its Omaha operations.

According to the EPA, each MWh of electricity generated in the Southwest Power Pool’s territory emits 969 lbs of CO2e on average meaning CSG’s purchase of green RECs has resulted in 510,663 lbs (232 metric tons) of CO2e carbon offsets.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

TAKING ACTION

Completed ESG Double Materiality Assessment Aligned to the Science Based Target Initiative (SBTi) and Setting Targets Off-set 100% Scope 2 GHG Emissions at Omaha office for Second Half 2024

CSG continues to explore technology upgrades, AI and other GHG emissions reduction opportunities.

100% of Paper Waste Recycled, Diverted from Landfill

See our Carbon Footprint Data Report here.

32

Message from CEO

About CSG

Employee Experience

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Environmental Stewardship

Global Security

Reporting

Partnerships

Outside-in perspective

Completed Double Materiality Assessment

Financial Materiality

As part of our ongoing commitment to sustainability, CSG has completed a double materiality assessment, a key milestone in our Environmental, Social and Governance (ESG) journey. This assessment evaluates how sustainability issues affect our financial performance and examines the broader impact of our operations on society and the environment.

The double materiality approach is becoming a recognized best practice for businesses aiming to navigate the complexities of ESG reporting.

Through stakeholder engagement and data analysis, CSG has identified critical sustainability challenges and opportunities that align with our

Impact Materiality Inside-out perspective

growth and responsibility to the community.

While we have already made strides to reduce carbon emissions, protect

TOP MATERIAL TOPICS IDENTIFIED

customer data and foster a culture of inclusion, this assessment allows us

to focus on even more targeted sustainability initiatives.

This accomplishment marks an important step in our journey toward a

more sustainable future, and we are excited to strengthen transparency and trust with our stakeholders as we move forward.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Financial Impact: Practices that are most likely to have a material effect on the company’s financial performance

Sustainable Impact: CSG’s impact on people and the environment from its operations and along its value chain

1.

2.

3.

4.

5.

1.

2.

3.

4.

5.

Business Continuity Customer Data Privacy Business Ethics Critical Incident Management Employee Attraction and Retention

GHG Management Employee Well-being Business Ethics Energy Management Employee Health and Safety

33

Message from CEO

About CSG

Employee Experience

The Power of Recycling Sustainability is more than just a goal—it’s part of our DNA. Our Recycling Program plays a vital role in our commitment to reduce waste, conserve natural resources and minimize our environmental footprint. We recognize that recycling plays a large part in this commitment as it helps preserve ecosystems, reduces pollution and supports a circular economy by reusing materials rather than stripping the environment for new ones.

At CSG, our goal is to build an empowered community equipped with the knowledge to make eco-conscious decisions that lead to long-term, positive change. By refining our recycling practices, we are contributing to a cleaner planet and a healthier future, and with each recycling effort we are taking tangible steps toward ensuring a better world for future generations.

TOTAL PAPER WASTE RECYCLED (LBS.) FOR EACH CDD

TEXAS (312.400)

Inclusion & Impact

Environmental Stewardship

Communication, Design & Delivery Recycling Spanning multiple locations, including Florida, Texas and Nebraska, the CSG Recycling Program is at the heart of our sustainability efforts. The program is designed to track and report monthly recycling data,

ensuring alignment with corporate sustainability goals. Each location adheres to a clear and consistent process, detailed tracking and recycling reporting data to track, log and report recycling data from local

vendors, ensuring transparency and accountability in our efforts.

Scope & Purpose The CDD Recycling Program tracks and reports

17.5%

monthly recycling data from all CDD locations. This data is essential for compiling annual recycling

FLORIDA (498.121)

statistics, which are used to monitor progress toward CSG’s sustainability goals. Through this effort, we

27.9%

54.6%

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

ensure every location contributes meaningfully to our environmental objectives while minimizing waste and NEBRASKA (974.973)

optimizing our recycling processes.

Global Security

Reporting

Partnerships

Recycling Impact IN 2024, CSG FACILITIES COLLECTIVELY RECYCLED 1,785,494 POUNDS OF PAPER, WITH 100% OF PAPER WASTE BEING DIVERTED FROM LANDFILLS. This achievement is a testament to our ongoing dedication to resource conservation. Each of our facilities has tailored processes to securely handle and dispose of confidential materials, ensuring both environmental sustainability and data security.

The CDD Recycling Program plays a critical role in our overall sustainability strategy. By strengthening vendor relationships, streamlining processes and maintaining open communication, we ensure that all locations contribute to our corporate recycling objectives.

34

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

EarthDay.org

Inspiring a Sustainable Future Through Partnerships Creating lasting change requires collaboration. We are proud to partner with environmental organizations that share our vision for a more sustainable world. In 2024, we deepened our commitment to this vision by working alongside several outstanding non-profits that help us drive actions to achieve our sustainability goals.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Global Security

Reporting

Partnerships

10K TREES

For the second consecutive year, we partnered with EarthDay.org to amplify our environmental impact. We launched a dedicated internal SharePoint site to foster employee discussions around sustainability and environmental CSG’S COMMITMENT TO THE ARBOR DAY challenges.

AND ITSseeking MISSION Moving from paper billing to digital payments is a key FOUNDATION step for businesses toTO

Guiding Clients Through the Transition

THEin ATLANTIC improve both efficiency and sustainability. CSG plays a RESTORE crucial role helping FOREST clients As part navigate of our Earth celebrations, we hosted RESULTED IN THE ensuring PLANTING OF 10,000 thisDay transition.

We provide tailored digital payment solutions, a webinar for our CSG Environment Champions— TREESenvironmental WITHIN THIS VITAL ECOSYSTEM. businesses experience seamless adoption while minimizing impact. a passionate group of employees driving volunteerism and sustainability across the Our support includes educating stakeholders, ensuring compliance, and optimizing company.

CSGers also participated in volunteer processes to enable smooth transitions. With CSG’s guidance, businesses can adopt events across India, rolling up their sleeves to greener, more efficient payment methods with confidence. make tangible changes in local communities.

We Make Change

As part of our broader commitment to social responsibility, we dedicated a CSG Volunteer Change Day to supporting social enterprises CSG’s dedication to reforestation took root with focused on environmental sustainability. More a $10,000 donation to the Arbor Day Foundation. than 20 CSG employees volunteered their time This contribution helped support their mission of that benefit CSG is proud to help clients make choices their operations and andboth expertise, contributing 80+ hours to restoring Atlantic Forest by paper planting trees in resource organizations thethe planet.

By reducing usage and consumption, that digital payments work tirelessly to protect vital ecosystems. $3.33 donated, the future. We contributeFor to aevery cleaner, more sustainable are dedicated to empowering the planet. foundation plants to a new benefiting our clients taketree—directly meaningful steps toward a more efficient and eco-friendly the environment.

In addition, CSG was proudly business model.

Through these partnerships, CSG is making recognized as a corporate partner for the Arbor measurable progress toward a sustainable Day Foundation’s Environmental Change Day, future, empowering our employees to be a powerful campaign designed to inspire action champions of change and directly impacting for environmental preservation. our planet’s health.

Arbor Day Foundation

35 35

Message from CEO

About CSG

Earth Day 2024 “Planet vs. Plastics” Earth Day is a cornerstone of our commitment to environmental stewardship and creating a meaningful

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Social Enterprises Benefit During Earth Day CLEAN SOMETHING FOR NOTHING

WERO ZERO WASTE

VILLAGE SOLAR

FARMHUT

impact. In 2024, we were thrilled to renew our

partnership with EarthDay.org, bringing together our global team to volunteer in support of our shared dedication to protecting the planet.

The collective effort of our employees raised more than The theme for this year, “Planet vs. Plastics,” was a call

$60,000 in support of these organizations, significantly

to action for reducing plastic waste and protecting

contributing to their environmental missions. This year’s

both human and environmental health. By addressing

Earth Day reaffirmed our commitment to purpose-driven

the global plastic crisis, we are doing our part to

action and creating a cleaner, healthier future for all.

safeguard ecosystems and ensure the well-being of future generations. Both in-person and virtual volunteer opportunities were available for employees worldwide. With the help of an interactive map,

employees could find local in-person volunteer

Employee Groups Working Toward a Common Goal

opportunities, while those unable to attend in-person

In addition to our corporate Earth Day efforts, CSG

could support environmentally-focused social

employees across the globe took part in a variety of local

enterprises through We Make Change.

Earth Day events, showcasing the passion and dedication to take action toward a healthier, more sustainable future for all.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

I had a chance to join a volunteer group in Riyadh, Saudi Arabia to celebrate Earth Day 2024. Considering this year’s theme, “Planet vs.

Plastics” a group of 32 volunteers from different organizations and different nationalities participated in collecting plastic waste.

Approximately 70 trash bags full of plastic waste were collected during this volunteer activity.

—Imran Khan, Senior Architect

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

The Black Culture Collective (BCC) also marked Earth Day by partnering with Tabor Farms in Fort Worth, Texas, for a dedicated cleanup effort. Tabor Farms, which spans 40 acres, provides education about farming and supports local residents with income-generating opportunities. Volunteers helped enhance the quality of life for the Stop 6 community, making a meaningful impact in an area that strives for greater environmental justice.

In Omaha, CSGers teamed up with Keep Omaha Beautiful for an environmental cleanup project that resulted in the removal of trash and other beautification projects, showcasing the power of how collective action benefits the environment.

Our India-based CSGers in Chennai participated in a beach cleanup, continuing our long-standing partnership with EarthDay.org to organize cleanup events across India. This event is part of a broader effort by CSG employees to engage with their local environments, supporting the preservation of natural spaces and promoting sustainability across the globe.

As part of The Great Global Cleanup, CSG proudly joined millions globally in achieving a cleaner, waste-free world.

OUR EARTH DAY EFFORTS HELPED CONTRIBUTE TO THESE WORLDWIDE RESULTS:

9M LBS

600K

5,014

192

OF WASTE REMOVED FROM THE ENVIRONMENT

These employee-driven initiatives reflect our commitment to creating a cleaner, healthier planet while fostering an environment where everyone contributes to positive change.

CLEANUPS COMPLETED © 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

VOLUNTEERS ACTIVATED

COUNTRIES WITH CLEANUPS

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Zero Waste Living

Shaping a Sustainable Future, Together We understand that every action, big or small, impacts the environment, and we’re committed to a journey of creating a healthier planet and minimizing our environmental footprint. Our

Green Your Routine initiative is central to this effort, inspiring employees to incorporate sustainable practices into their daily lives.

By making small changes at home and in the

workplace, we believe we can collectively build a better future for the world around us.

This year we invited our employees to explore the principles of zero waste living. From composting to reducing single-use plastics, we’re all taking meaningful steps toward a more sustainable and circular economy.

Sustainable Transportation We’re rethinking transportation. Whether it's biking, carpooling or using public transit, our employees are empowered to choose more sustainable ways to commute. This initiative reduces our collective carbon footprint while promoting healthier, eco-friendly travel habits.

Energy Conservation Energy efficiency is at the heart of our sustainability efforts. Whether it’s turning off lights, unplugging devices or seeking out renewable energy sources, we’re fostering a culture of energy conservation both at work and at home. Every small action counts in our collective journey toward a more sustainable future.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

The Power of Collective Action Green Your Routine isn’t just about individual changes—it’s about creating a ripple effect throughout our organization. As we continue to share our experiences and inspire one another, we’re making real progress toward a more sustainable future, both for our people and the planet.

But keeping sustainability top of mind, we can drive change and lead the way toward a cleaner, greener world.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Global Security

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

39

Message from CEO

About CSG

Employee Experience

Safeguarding Data and Strengthening Trust We recognize that data security and privacy are paramount. In an age where data is both a valuable asset and a vulnerable resource, we take extensive measures to ensure our clients’ information is protected to the highest standards. We are committed to securing data and utilizing emerging technologies, such as artificial intelligence (AI), in a way that is ethical, transparent and responsible.

CSG’s security teams are dedicated to maintaining the integrity and confidentiality of client data through comprehensive security protocols. We manage enterprise security risk and provide “Prevent, Detect, Respond” services. We've also expanded our approach by implementing Zero Trust. Zero Trust is a cybersecurity model that requires strict verification, continuous authentication and segmentation to protect against internal and external threats.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Inclusion & Impact

Environmental Stewardship

Moreover, as AI becomes a powerful tool in transforming industries, we are steadfast in our commitment to using AI ethically. At CSG, we’ve established clear AI guiding principles that prioritize data privacy, security and respect for intellectual property. These principles ensure that our AI solutions are developed with the utmost consideration for privacy through design, transparency and inclusivity.

By adhering to these principles and implementing robust security measures, we ensure that our clients’ data is handled with the highest level of care, making CSG a trusted partner in their journey toward digital transformation. With CSG, your data is secure and your business is protected.

Global Security

Reporting

Partnerships

CSG’s AI Guiding Principles: 1. DELIVER POSITIVE EXPERIENCES: We strive to create value for our customers and employees through the ethical use of AI. 2. TRANSPARENT SOLUTIONS:

We deliver exceptional AI solutions with a focus on transparency and inclusivity for all stakeholders.

3. SECURITY & PRIVACY BY DESIGN: Our AI development incorporates security and privacy as foundational elements from the outset.

4. RESPECT FOR PROPERTY RIGHTS: We uphold data integrity and protect intellectual property rights with the highest standards of accountability.

By prioritizing security and ethical AI practices, CSG continues to ensure that customers can trust us to safeguard their data while delivering innovative, impactful solutions.

40 40

Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Commitment to Data Security & Privacy GLOBAL SECURITY ARCHITECTURE

GOVERNANCE, RISK, AND COMPLIANCE

Delivers Enterprise & Solution architecture services that solve challenges, manage risk and power business outcomes.

Manages Security Risk and Compliance (PCI, ISO) programs. Enables customer trust through contract terms and audit/risk inquiries.

CIO GO-TO-MARKET

PHYSICAL SECURITY INFRASTRUCTURE

Enables frictionless sales opportunities for internal teams and customers through security, cloud and infrastructure expertise.

Supports modern technical solutions that power global physical security and enhance employee experience.

SECURITY OPERATIONS

IDENTITY & ACCESS MANAGEMENT

Provides world-class Security Operations services including advanced prevention, detection and response.

NETWORK Facilitates secure and effective global communications capabilities for internal and external customers.

SECURITY AUTOMATION & TESTING Drives near real-time risk reduction through vulnerability remediation across CSG via scalable automated solutions. © 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Delivers robust solutions for strong authentication, authorization and centralized identity management.

DATA PRIVACY OPERATIONS Provides Privacy and Security functions with technologies to meet regulatory needs and satisfy global customer privacy expectations.

PRODUCT SECURITY Enables secure coding best practices, continuous software vulnerability remediation, and supply chain integrity through the development lifecycle.

41 41

Message from CEO

About CSG

Employee Experience

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Global Security

Reporting

Partnerships

Certifications & Assurance ISO 27001:2022

SSAE SOC 1

CSG achieved ISO 27001:2022 certification in June 2018 and continues to evolve securely by systematically and continually reviewing and evaluating security threats and vulnerabilities.

CSG’s SSAE 18 / ISAE 3402 SOC 1 Type II Report provides a description of the CSG control environment and the results of the external audit of the CSG-defined controls and objectives.

SOC 2 Type 1 and CSA StarEnterprise Cloud Services

CSA Star

CSG’s SSAE 18 SOC 2 Type 1 and CSA Star Report for Enterprise Cloud Services Report provides assurance that CSG’s service commitment and system requirements for Security and Availability are achieved.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

CSG is a member of the Cloud Security Alliance (CSA) and listed as a CSA-Trusted Cloud Provider.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Certifications & Assurance

PCI

HIPAA

CSG is a PCI DSS v4.0 Level 1 Service Provider and our compliance assessment was performed by a highly respected third-party assessor.

CSG maintains our HIPAA compliance program through a comprehensive set of policies, procedures and controls that are continuously reviewed and updated.

GDPR

InfoSec

CSG has implemented global policies and specific procedures that align with the GDPR for any services that process personal data related to EU residents.

CSG’s security program is compliant with all legal and industry-mandated information security requirements.

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Environmental Stewardship

Global Security

Reporting

Partnerships

Reporting

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

44

Message from CEO

About CSG

Our Commitment to Corporate Responsibility We are driven by a deep commitment to sustainability, social responsibility and ethical governance. Each year, our Environmental, Social, and Governance (ESG) reporting serves as a platform for transparency, offering detailed insights into our ongoing efforts and progress in these vital areas.

We aim to provide a clear and comprehensive overview of how we are driving positive impact—both in our operations and across the broader community.

Our goal is to share our journey and hold ourselves accountable to the highest standards of responsibility:

Inclusion & Impact

Employee Experience

This report highlights our ESG practice and the significant strides we are making toward creating a better, more sustainable future. It showcases our collaborative efforts with key partners and emphasizes our dedication to meeting and exceeding industry standards for transparency and responsible business practices.

Engagement with Leading ESG Frameworks In alignment with our commitment to continuous improvement, CSG engages with leading ESG frameworks to ensure we stay at the forefront of global sustainability practices.

SASB

CDP

Sustainable Practices to protect and preserve our planet for future generations ▪ Social Responsibility to uplift communities and create a lasting, positive impact ▪ Ethical Governance to uphold integrity and build trust with all our stakeholders ▪

Environmental Stewardship

SASB

TCFD

CDP

EEO-01

GRI

(coming soon)

TCFD

Reporting

Partnerships

Further ensuring our sustainability initiatives align with reputable global standards, CSG also engages with S&P Global CSA, ISS, MSCI and Sustainalytics to ensure our sustainability efforts are in line with industry peers and best practices.

For more information, we encourage you to contact our Sustainability Team at sustainability@csgi.com.

Together, we are making purposeful progress toward a more sustainable and responsible future.

EEO-01

EcoVadis

2023 Impact Report

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Global Security

CSG’s Documents, Policies and Charters

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Reporting

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Partnerships

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Message from CEO

About CSG

Employee Experience

Inclusion & Impact

Alliances & Partnerships

Environmental Stewardship

Reporting

Partnerships

CSG is proud to partner with the following organizations to create impact across the globe.

50 Mile March

Association of Corporate Counsel

First Tee Gulf Coast

Abide Network, Inc.

Beloved Youth Moving Forward

Food Bank for the Heartland

Adaptive Spirit

Bharatiya Grameen Mahila Sangh

GBS/CIDP Foundation International

Advocate Charitable Foundation

Boys Town

Global Compact Network USA

American Institute of Certified Public Accountants

California State University Northridge Foundation

Government Primary School Vaderahalli

Aikya Trust

Children’s Hospital Colorado Foundation

Government Aided School – India

Aksarben Curling Association

College Preparatory School of America

Govt HPS Bidari, Rural Kannada School

ALSAC St Jude Children’s Research Hospital

Collegiate Crossings

Habitat for Humanity

Alzheimer’s Association

Colorado Brass

Happy Hope Foundation

American Cancer Society

COPE Galway

Harrison’s Playmakers

American Heart Association

Cox Heart to Hearts Golf

Hearts United for Animals

American Lung Association

Cross Catholic Outreach

High Plains Food Bank

American Registry for Internet Numbers

CSG CSR Internal Project

Instituto Filadelfia De Londrina

Anganwadi Kendra in Ragimasalawada

Davis Phinney Foundation

International Association of Privacy Professionals

Association for Promoting Social Action

Denver Metro Chamber of Commerce

International Bridge Tunnel and Turnpike Association

Arbor Day Foundation

Dorcas Heart

Irish Business and Employers Confederation

Ascend Performing Arts

Earthday.org

Jogendra Govt Primary School

Association of Chartered Certified Accountants

Equality Florida

K-Love

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Global Security

Leukemia & Lymphoma Society Lutheran Social Services of South Dakota Makkal Vilipunarvu Kalvi Sangam Mantarlee Social Innovations Federation Marian High School Marine Corps Scholarship Foundation MEF Forum Metropolitan State University of Denver Foundation, Inc. Milo’s Sanctuary, Inc. Montessori School of North Hoffman Muddy Paws Second Chance Rescue Mustaches fr Kids Omaha Nacha Narilo Primary School National Investor Relations Institute National Multiple Sclerosis Society National Safety Council Navy Seal Museum

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Employee Experience

Inclusion & Impact

Nebraska Appleseed

Samarthanam Trust for the Disabled

Nebraska Diaper Bank

San Francisco Aids Foundation

Ngaphaya Y2k10

Sangam Marketing Services

Ocean Bottle

Santosh Jadhav

Open Door Mission

Sarpy County Chamber Of Commerce

Organization for Development Action

Satguna Sangraha Trust

Pancreatic Cancer Action Network

School Sip53

PCI Security Standards Council

Shatterproof

PI Kappa Alpha Foundation

Siena Francis House

Pine Creek Elementary PTO

Sip14_Govr Primary School Konagutte

Porter-Billups Leadership Academy

Sip40_Zilla Parishad Uccha Prathamik School

Prerana

Sip53_Cbm Sakunthala Vidhyalaya_Raghavan

Project Literacy of Greater Bergen County

Special Olympics Nebraska

PTSD Foundation of American DFW

Ssmb Higher Goverment School

Pup School

St John the Baptist School and Church of the Holy Spirit

Puranmal Agarwal

Stock Yearly

Radial Arts Center

Susan G Komen

Rajkiya Uchha Madhyamik Vidyalaya

Swing For A Cure

RIMS, the Risk Management Society

Tax Executives Institute

S S Incorporation

Taylor Lech Foundation

Sai Trust

© 2025 CSG Systems International, Inc. and/or its affiliates (“CSG”). All rights reserved.

Environmental Stewardship

The Associated Chambers of Commerce and Industry of India

The Barrett Foundation The Forward Foundation

Global Security

Reporting

Partnerships

Donations Made by Employee Belonging Groups

The Salvation Army The WICT Network The Women’s Foundation of Colorado Third Party Payment Processor Association TM Forum

50 Mile March Anita Borg

Black Girls Code Black Minds Matter UK

Tranquil Charitable Foundation

Exceptional Persons, Inc.

Trellis Group

Folds of Honor

Udayan Care

Gary Sinise Foundation

United Service Organizations

Lime Connect

United Way Upper Primary School Khasbara Vidya Mandir Bandrewadi Wayne State Foundation We Make Change Global Limited

Narayan Seva Sansthan NPower UNCF US Navy Seal Museum

SOS Children’s Home Toys for Tots

Wings of Hope Cancer Support Center Inc

Travis Manion Foundation

Womenade of Elkhorn

Wounded Warrior Project

World Central Kitchen

Youth Emergency Services

ZPHS Jangalapalli

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Learn More: sustainability@csgi.com

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