NPK International : ESG (NPK 2025 Sustainability Report)

NPKI

Published on 05/14/2026 at 05:55 pm EDT

PROTECTING OUR FUTURE

2025

SUSTAINABILITY REPORT

Who We Are 4

Introduction 6

Environment 8

People 12

Governance 16

SASB Report 20

TCFD Report 23

WHO WE ARE

At NPK, we are the only site access solutions partner to manufacture and rent industry-leading sustainable composite matting, along with a full suite of services including planning, logistics, and remediation.

By delivering reliable and environmentally responsible solutions, we are driven to help our customers improve the efficiency and sustainability of their operations. This drive is the catalyst for innovation and the development of next-generation products and services. With a strategic focus on energy infrastructure markets, NPK provides sustainable technologies and services that cater to the evolving needs of our customers.

In 2025, 66% of our revenues were generated from the rental of our recyclable composite matting systems and related worksite services, while 34% were generated from the sale of our manufactured recyclable composite mats to customers around the world. With our strategic focus, the utilities industry is our primary end-market, contributing more than two-thirds of our 2025 revenues. NPK prides itself on playing a pivotal role in shaping a more resilient and environmentally conscious future.

BUSINESS FOCUS

NPK delivers superior quality and reliability across critical infrastructure markets, including electrical transmissionand distribution, oil and gas exploration, pipeline, renewable energy, petrochemical, construction, and other industries.

DIVERSE END-MARKET COVERAGE

Utilities Oil C Gas Infrastructure

Renewables Petrochemical Midstream

4 NPK 2025 SUSTAINABILITY REPORT

26 R&S Yards

3 Partners in 7 Territories

GLOBAL FOOTPRINT

CORE VALUES

At NPK, our values, safety, integrity, accountability, respect, and excellence are more than words - they are non-negotiable fundamentals that define what is important to us. They are the foundation for our PURPOSE.

Our purpose encapsulates how our values work together to drive our decision-making, actions, and behaviors. They help us create meaningful relationships with each other, our clients, and partners. Every day, we strive to live these values and fulfill our purpose, building a culture that reflects who we are and where we're headed.

P U R P O S E

People Focused United

Reliable Passionate Optimistic Sincere Enterprising

ANNUAL REVENUE

~510

TOTAL EMPLOYEES

93%

REVENUES GENERATED

IN THE U.S.

NPK 2025 SUSTAINABILITY REPORT 5

COMMITMENT

As a provider of manufactured products and related services to energy infrastructure markets, we recognize the significance of a sustainable world for future generations and understand our responsibility and opportunity to make positive and lasting impacts on our environment and in our communities.

Protecting our future through sustainable products and services across the spectrum of the energy transition.

We remain firmly committed to advancing, creating, and supporting our sustainability efforts as we continue to deliver innovative and environmentally friendly solutions, create a safe and positive work culture, and support our customers in the global shift to a lower carbon economy and renewable energy sources.

6 NPK 2025 SUSTAINABILITY REPORT

REDUCED DEFORESTATION

COMMITMENT

REDUCED CO2 EMISSIONS

Environmental sustainability is not aspirational for us - it's been a cornerstone of our business strategy for decades. Our fully recyclable DURA-BASE® composite matting system has remained a disruptive, sustainable technology since its first appearance in 1998. In recent years, we have launched newer generation matting systems that offer a further reduction in weight. The lightweight composite design provides a distinct environmental advantage for our customers as compared

to alternative wood mat products in the market, eliminating deforestation required to produce wood mat products and reducing greenhouse gas emissions associated with product transportation.

REDUCED DEFORESTATION

REDUCED MILES DRIVEN

According to the Texas Forestry Commission, it takes 60 years to grow a milling-size tree for a wood mat that is typically incinerated or disposed of in landfills after an average life of 3 years. DURA-BASE mats are made from high-density polyethylene (HDPE) resin, which can be cleaned, reused, and 100% recycled - reducing the need for deforestation.

REDUCED CO2 EMISSIONS

DURA-BASE mats weigh roughly one-third of alternative wood mat solutions, requiring fewer trucks to transport the same usable surface area, thereby saving CO2 emissions with every load eliminated. Also, over time wood mats can retain moisture, which increases their weight and further decreases mats per load, requiring even more trucks and increased customer transportation costs.

8 NPK 2025 SUSTAINABILITY REPORT

RECYCLED RESIN

We also continue to leverage our investments in research and development capabilities and adaptable manufacturing processes to increase the use of recycled materials in our composite mat production. This provides further potential economic benefits along with a significant reduction in life-cycle greenhouse gas emissions when compared to using traditional virgin resin. In 2025, our manufacturing operations consumed over 2 million pounds of

recycled resin, and we look to expand our usage of recycled materials going forward. We believe this is only the beginning of a larger journey in the circular economy.

2M+

POUNDS OF RECYCLED RESIN CONSUMED IN MANUFACTURING OPERATIONS

REDUCED MILES DRIVEN

Fewer trucks on the road and fewer miles driven mean safer conditions and less nuisance for the community as a whole.

Less accidents

Less water and land pollution

Less noise, dust, and disruption

At ~1,000 lbs. per mat, DURA-BASE has a trucking capacity of up to 46 mats per load compared to wood mats which weigh between 1,500 - 2,800 lbs. and only allow for 15 - 30 mats per load. For example, 1,500 DURA-BASE mats will require 36 truckloads, where the same number of heavier timber mats would need over 100 truckloads.

NPK 2025 SUSTAINABILITY REPORT G

ELECTRICITY CONSUMPTION, FUEL CONSUMPTION, AND EMISSION METRICS

As part of our ongoing efforts to benchmark and drive continuous efficiency improvements in our energy consumption, we recently implemented tracking systems for electricity and water consumption across our global facility footprint. Our manufacturing facility in Carencro, LA, represents the majority of our electricity consumption (~80,000 GJ), while our Katy, TX, administrative office facility, which

is primarily occupied by third-party lessees, represents the majority of our water consumption (~20 million gallons). Electricity and water consumption for measured locations in 2025 is as follows:

2025

Electricity Consumed

Locations Disclosed

~94,000 GJ

16

Water Usage

Locations Disclosed

~22.3M gal

7*

* Seven of our locations do not disclose water usage because they operate with well water systems.

2025 Total (Gallons)

Fuel Type

On Road

Off Road

Diesel

~230,000

~110,000

Gasoline

~185,000

~7,500

We track multiple categories of sources of emissions across our operations. Fuel consumption for both on-road and off-road vehicles, including gasoline and diesel usage, is monitored to support operational efficiency, and data-driven decision-making. We will continue to pursue enhancements in our monitoring

capabilities and disclose emissions information where relevant in future reporting cycles. Our operations do not result in any measurable VOC particulate matter and hazardous air pollutant emissions.

10 NPK 2025 SUSTAINABILITY REPORT

WASTE, WATER, AND MATERIALS MANAGEMENT

NPK tracks nonhazardous waste generation and supports recycling efforts across our operations. We maintain responsible processes for the limited amounts of regulated waste produced, such as used hydraulic oil from field equipment, which is collected within the guidelines of state and federal requirements. Such hazardous waste generation is not material to our business, and thus, not measured.

Across our manufacturing and worksite operations, we prioritize the minimization of waste, which includes the extensive reuse and ultimate recycling of packaging materials, as well as the recycling of all scrap resin that is generated through our manufacturing process. The scrap resin is collected, reprocessed, and reintroduced to the manufacturing process, eliminating the only source of significant manufacturing waste.

NPK tracks water usage through utility data and internal reporting. Wastewater generated through production processes is managed through licensed third-party services. Our processed water operates in a closed loop system and gets recirculated.

NPK 2025 SUSTAINABILITY REPORT 11

COMMITMENT

At NPK, our greatest assets are our people-their inspiration, dedication, and creativity make this a great place to work. A passion for our crafts, a shared vision for the future, and values that embody our culture and commitments bring our NPK family together.

Our values shape our decisions, actions, and relationships, driving us toward our purpose. They each guide us in building meaningful connections with each other, our clients, and our partners. Every day, we strive to live these values and our

purpose, creating a culture that reflects who we are and where we're headed.

We are incredibly proud of our NPK culture and talented people.

By putting people first, we create a diverse and inclusive work environment that respects differences and strengthens connections. We remain steadfast in our commitment to

maintaining the highest levels of health, safety, and well-being for our employees and customers.

TALENT RETENTION

We are committed to attracting talented people and providing them with advancement opportunities and continually monitor employee turnover rates as part of our culture of continuous improvement. We also invest in continuous learning to equip our employees with the training, development, and support they need to thrive and succeed at

NPK. To support our efforts, we track annual training hours per employee across safety, leadership, technical, and compliance programs, to help ensure our development initiatives meet our organizational needs.

Our performance management process includes annual goal setting, ongoing feedback, and formal bi-annual performance reviews to support career growth and alignment with our company objectives.

COMPETITIVE PAY

We employ fair and equitable compensation practices aligned with our pay-for-performance. Our compensation programs are continually benchmarked against market data to ensure the fair treatment of our employees.

12

NPK 2025 SUSTAINABILITY REPORT

EMPLOYEE BENEFITS

We value the whole person here at NPK. In every location, we offer various benefit programs to our employees and their families to support their health and wellness, including employee assistance programs.

EMPLOYEE ENGAGEMENT

We subscribe to the philosophy that engaged employees deliver higher-quality results and create a work environment that fosters a positive culture. We strive to connect our global workforce by giving people opportunities to be involved. Whether participating in our global townhall meetings, employee wellness program, training and development, or community events, employees can always find something to plug into here at NPK.

DIVERSITY AND INCLUSION

NPK is an equal opportunity employer. We are committed to attracting and retaining the best people and fostering an environment of openness and trust, empowering each of us to contribute to our full potential in meeting our customers' needs. We accomplish more when people from diverse backgrounds and with different talents and ideas work together in an environment where everyone can contribute and fully use their abilities.

COMMUNITY OUTREACH

We strongly believe in giving back to the communities where we live and work. Our philanthropic endeavors reflect our commitment to protecting our future, focusing on several programs supporting future generations. We invest through volunteer hours, team events, and charitable contributions. Examples of community programs that we proudly support include:

All Ears! Listening G Language Center

Providing a comprehensive Listening C Spoken Language program for children with hearing loss, including family-focused pediatric audiology, speech, and educational services.

HUMAN RIGHTS

At NPK, respecting and promoting human rights is fundamental to the success of our business and the well-being of our employees, customers, and communities.

We are committed to fostering a culture

where dignity, fairness, and equal opportunity are core values. This includes providing a work environment free from discrimination, harassment, and exploitation. We hold

ourselves and our business partners to high standards, ensuring human rights

are respected throughout our operations and supply chains. By upholding these principles, we create

an environment where everyone is treated with respect and dignity.

Sky High for Kids

A non-profit organization bringing communities together to provide comfort, fund research, and save the lives of those fighting pediatric cancer and other life-threatening conditions.

NPK 2025 SUSTAINABILITY REPORT 13

At NPK, we believe that a strong safety culture is essential for our success and for earning our customers' trust. We fully embrace our responsibility to continuously enhance this culture across our global operations and throughout our supply chain. Safety is not an afterthought; it is integrated into every step of our processes and is the highest priority core value among the core values that make up our corporate philosophy.

Our comprehensive management systems, supported by effective policies and procedures, provide clear guidelines for safe operations. However, true success depends on the commitment of each individual. Every team member plays a crucial role in making safety

a shared priority, ensuring that together we protect our people, our partners, and our future.

Over the past three years, NPK has demonstrated a sustained, multi-year improvement trend in our Total Recordable Incident Rate (TRIR), reflecting the effectiveness of our safety programs and our

continued commitment to protecting the health and wellbeing of our employees.

SAFETY MISSION AND VISION

Our mission is to create a zero-harm workplace, all the time, everywhere, by establishing practices to protect our people, communities, and environment.

Our vision is an extension of our NPK Core Values. It reflects our commitment to conducting activities that confirm the protection of the health and safety of our people, those involved directly or indirectly in our operations, and the environment where we live and work.

14

TOTAL RECORDABLE INCIDENT RATE (TRIR)

21

HSE TRAINING HOURS

PER PERSON

* Excluding business units acquired in 2025.

NPK 2025 SUSTAINABILITY

SAFETY TRAINING

We offer comprehensive training for employees on safety guidelines, regulatory requirements, best practices, and new initiatives to address the evolving needs of our workforce and customers. By utilizing various methods, including Monthly Safety Meetings, Safety Alert notifications, Toolbox Talks, and online learning platforms, we create a diverse and adaptable learning environment that caters to different learning styles. This proactive approach not only safeguards the wellbeing of our employees but also enhances customer confidence by promoting a culture of safety and awareness.

SAFETY INITIATIVES

We have implemented several initiatives to continuously enhance the safety and well-being of our personnel. These initiatives include unique global safety campaigns aimed at fostering communication and improving our Health, Safety, Environment, and Ǫuality (HSEǪ) Management System. Our global system captures all employee action cards (safety observations), incidents, management of change, and quality events as we drive continuous improvements in our safety program.

Additional NPK Safety programs include:

Stop Work Authority: Cultivating a culture of trust where every employee is empowered to halt unsafe situations.

Keystone Safety Rules: Endorsing ten essential life-saving rules to prevent serious injuries during high-risk activities.

Employee Recognitions and Awards: Recognizing and rewarding outstanding HSEǪ performers in each region quarterly to highlight their contributions to improving HSEǪ standards at NPK.

Safety-Based Behavioral System: Encouraging the submission of action cards to promote hazard awareness and prevent injuries.

Driver Safety: Promoting excellence in driver safety behavior through timely training completion and the use of telematics technology to assess driving behaviors, which can lead to supplemental training or rewards for safe driving.

Risk Resolution and Reduction: Integrating all components from the risk assessment cycle with a focus on a reactive approach to prioritization.

NPK 2025 SUSTAINABILITY REPORT 15

COMMITMENT

Each year, we engage with the majority of our shareholders, specifically to solicit their feedback regarding sustainability, governance, and executive compensation, and incorporate their valuable feedback into our annual planning. We are proud of our strong shareholder support, achieving a 95% approval of our named executive officer compensation in 2025.

Built upon our Core Values, we are committed to maintaining an environment of high ethical standards and robust governance practices. One of these Core Values, Integrity, acting honestly and ethically, is a critical component to our continued success as a company and remains the foundation for our business.

The NPK Code of Business Ethics and Conduct provides a clear framework, establishing our expectations for all global employees, our Board of Directors, and any individuals associated with NPK, to conduct themselves with the utmost integrity in everything they do.

Our Board promotes transparent corporate reporting, compliance with applicable laws, rules, and regulations, and corporate behavior that conforms to established governance standards. As of the end of 2025, the Board is comprised of six independent directors and NPK's Chief Executive Officer. We are proud of our Board independence, diversity, and robust Board member refreshment process, which helps ensure that our Board evolves with our changing business.

16 NPK 2025 SUSTAINABILITY REPORT

BOARD COMMITTEES

Our Corporate Governance Guidelines establish the following three Committees of the Board of Directors comprised of independent non-employee directors: The Audit Committee, the Compensation Committee, and the Nominating and Corporate Governance Committee. Here are additional responsibilities of each committee:

The Audit Committee provides an independent review of the integrity of the Company's financial statements, internal controls, and ethics policies.

The Compensation Committee is responsible for setting compensation standards for the Company's senior officers, administering the Company's equity-based incentive plans and producing an annual report on executive compensation.

The Nominating and Corporate Governance Committee acts as an advisor to the Board of Directors in matters of composition and function of the Board, identifying qualified individuals for election.

AGE

DIREC-

TOR SINCE

GENDER

ETHNICITY

OTHER BOARDS

COMMIT

AUDIT

TEE MEMBE

COMP

RSHIPS

ESG

INDEPENDENT

Rose M. Robeson

Board Chair

65

2018

Female

Caucasian

2

Joseph A. Cutillo

60

2025

Male

Caucasian

1

Matthew S. Lanigan

CEO

55

2022

Male

Caucasian

-

Roderick A. Larson

59

2014

Male

Caucasian

1

Comp Chair

Michael A. Lewis

NCG Chair

64

2021

Male

African American

2

Claudia M. Meer

Audit Chair

64

2022

Female Caucasian

- ✓

John C. Mingé

64

2017

Male Caucasian

-

Board statistics as of December 31, 2025

NPK 2025 SUSTAINABILITY REPORT 17

NPK is committed to conducting business in compliance with all applicable laws prohibiting bribery and corruption. Our Ethics and Compliance (ECC) Program and related policies are designed to communicate NPK's culture of compliance and commitment to abiding by Anti-Corruption Laws to all our employees and all parties we conduct our business with.

Our ECC Program has been designed per industry best practices outlined in the U.S. Department of Justice's Evaluation of Corporate Compliance Programs and the Resource Guide to the U.S. Foreign Corrupt Practices Act.

We have not made political contributions to candidates, campaigns, or political parties. Our engagement in public policy is limited to our participation in trade associations, which advocate on broad industry issues. These organizations operate independently in determining their political activities, and NPK does not direct or control their contributions.

We do not engage in aggressive tax planning, artificial structures, or tax avoidance schemes. Our approach aligns with our Core Values and reflects our commitment to transparency, compliance, and ethical conduct.

ANTI-BRIBERY AND ANTI-CORRUPTION

We are firmly committed to avoiding bribery and corruption and comply with all applicable laws in the United States and United Kingdom, where we operate. We require our suppliers, distributors, and other business partners and representatives to uphold this same standard. Many countries where we sell our products also have their own anti-bribery and anti-corruption laws. NPK requires its suppliers, distributors, and business partners to comply with anti-bribery and anticorruption laws and regulations in the jurisdictions in which they operate.

TRAINING

We have ongoing training for employees in areas of ethics and compliance. Our training program is designed with the intent to provide risk-based training to all appropriate personnel on an annual basis in the following topics:

Compliance and Business Ethics Practices

Anti-Bribery and Anti-Corruption

We deploy our training through industry-standard training management systems, tracking attendance and completion efficiently and effectively. The compliance department also conducts in-person training on critical topics, as needed. Our training programs are reviewed annually for effectiveness and to identify opportunities for improvement.

18 NPK 2025 SUSTAINABILITY REPORT

OPEN REPORTING AND ETHICS HOTLINE

All stakeholders are responsible for making NPK aware of any actual or suspected unethical behavior or violations of our code, policies, process, or applicable laws. All NPK employees receive training on their responsibility to report

unethical conduct or violations and the methods of making such a report, including reporting

to management, legal, or via the Company's reporting hotline. The hotline is operated by a third party, and is available 24 hours a day, 7 days a week.

Web: https://npki.com/governance

Our Board of Directors, as a whole and through its Committees, oversees our Enterprise Risk Management (ERM) processes for identifying, assessing, and mitigating risks to the Company, including any climate-related risks. Our management teams are responsible for managing risk daily, leveraging input from operational leaders, and key support functions, including Internal Audit, Risk, and HSEǪ. In accordance with our ERM Policy, we review our evolving enterprise risk landscape quarterly, evaluating appropriate course corrections or mitigating actions to implement in response to these risks. It is then reported bi-annually to the Board of Directors.

Our ERM framework guides our long-term and short-term planning, including developing appropriate strategic goals incorporated into our annual business plans. The long-term strategy and annual business plans are presented by management and approved by our Board.

Vendor and Supplier relationships based on trust, respect, and a shared commitment to ethical business conduct are essential to our Company's success. We can provide the best products and services partly because of our strong relationships with vendors and suppliers. We hold our vendors and suppliers to the same standards of ethical business conduct that we hold ourselves to and expect them to act ethically and in compliance with applicable laws and the principles outlined in the Code of Business Ethics and Compliance.

We manage rental and service operations in the United States and the United Kingdom, with our manufacturing operations located in the United States. 100% of our raw materials consumed in our manufacturing operations are procured domestically. We are a member of the Sustainable Supply Chain Alliance, an organization of utilities and suppliers working together to advance sustainable practices in utility supply chain and supplier networks.

To ensure customer satisfaction and compliance with customer sustainability requirements, we maintain a structured customer feedback process, including post project surveys, service reviews, and direct engagement with client teams. Insights

from this process inform product innovation, service enhancements, and continuous improvement efforts across our operations.

NPK 2025 SUSTAINABILITY REPORT 1G

The Sustainability Accounting Standards Board Foundation (SASB) is an independent, nonprofit standard-setting organization that develops and maintains voluntary reporting standards that enable businesses around the world to identify, manage and communicate financially material sustainability information to their investors.

This report provides data and information for NPK's global operations for 2025, including all wholly-owned subsidiaries pertaining to standards applicable to companies classified by SASB in the Engineering and Construction Services Industry as per SASB's Sustainable Industry Classification System®.

TOPIC ACCOUNTING METRIC G CODE DISCLOSURE AND ADDITIONAL INFORMATION

Number of incidents of non-compliance

with environmental permits, standards

and regulations

None known.

IF-EN-160a.1

We continue to focus on optimizing logistics to reduce greenhouse gas

emissions associated with the product movements between Company

locations, as well as between NPK and customer worksites. We have

developed and implemented a digital solution leveraging enhanced data

analytics, enabling our team to optimize the movement of rental assets

between locations and reduce our carbon footprint. We also continue to

utilize telematics technology for our vehicle fleet, enabling the tracking of

vehicle data in real-time, improving efficiency and reducing fleet energy

Environmental Impacts of Project Development

Discussion of processes to assess and manage environmental risks associated

consumption and carbon emissions. Further, in an effort to maximize fleet utilization and minimize vehicle waiting time and reduce greenhouse gas emissions, we also utilize local-based carriers for outbound deliveries and leverage brokers for efficient warehouse-to warehouse

product moves. At NPK, our RCD efforts constantly aspire to further

with project design, siting and

improve our sustainability baseline. Our product portfolio not only

construction

includes the DURA-BASE Advanced Composite Mats but also includes

the patented and ASTM 2715-9 certified EPZ Grounding System designed

IF-EN-160a.2

for enhanced safety and efficiency working on power line maintenance

and construction projects. In 2023 we launched our newest generation

matting systems, the industry's lightest heavy-duty composite mat,

which provides a distinct environmental advantage for our customers as

compared to alternative wood mat products in the market, eliminating

deforestation required to produce wood mat products and reducing

greenhouse gas emissions associated with product transportation. In

2025, we began tracking Scope 1 and Scope 2 related items such as

electricity consumed by the majority of our sites and fuel consumption

for our on and off road vehicles. Over time, this tracking may provide

useful insights into areas of improvement in activities related to Scope 1

and 2 GHG.

20 NPK 2025 SUSTAINABILITY REPORT

Disclaimer

NPK International Inc. published this content on May 14, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on May 14, 2026 at 21:54 UTC.