UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2025

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM_____ TO_____

COMMISSION FILE NUMBER 001-42589

SOLÉSENCE, INC.

(Exact name of registrant as specified in its charter)

Delaware	36-3687863
(State or other jurisdiction	(I.R.S. Employer Identification No.)
of incorporation or organization)

1319 Marquette Drive, Romeoville, Illinois 60446

(Address of principal executive offices) (zip code)

Registrant’s telephone number, including area code: (630) 771-6708

SOLESENCE, INC.

(Former name or former address, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, $0.01 par value per share		SLSN		The NASDAQ Capital Market

Securities registered pursuant to Section 12(g) of the Act:

Indicate by check mark whether the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark if the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ☒ Yes ☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

Large accelerated filer	☐	Accelerated filer	☐
Non-accelerated filer	☒	Smaller reporting company	☒
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

The aggregate market value of the registrant’s voting stock held by non-affiliates of the registrant based upon the last reported sale price of the registrant’s common stock on June 30, 2025 was $27,254,231 as of such date.

The number of shares outstanding of the registrant’s common stock, par value $.01, as of March 30, 2026 was 70,632,445.

DOCUMENTS INCORPORATED BY REFERENCE

None.

	PART I
Item 1.	General	2
	Company Background	2
	Consumer Products	2
	Personal Care Ingredients	3
	Advanced Materials	3
	Sources and Availability of Raw Materials	3
	Markets and Distribution	4
	Research and Development	4
	Competitive Advantage	4
	Manufacturing Operations	5
	Intellectual Property and Proprietary Rights	5
	Competition	5
	Governmental Regulations, Including Climate Change	6
	Employees	6
	Backlog	6
	Business Segment and Geographical Information	6
	Key Customers	7
	Forward-Looking Statements	7
	Investor Information	7
Item 1A.	Risk Factors	8
Item 1B.	Unresolved Staff Comments	8
Item 1C.	Cybersecurity	8
Item 2.	Properties	8
Item 3.	Legal Proceedings	9
Item 4.	Mine Safety Disclosures	9

	PART II

Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	10
Item 6.	Selected Financial Data	10
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	10
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	14
Item 8.	Financial Statements and Supplementary Data	14
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	14
Item 9A.	Controls and Procedures	14
Item 9B.	Other Information	15
Item 9C	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections	15

	PART III

Item 10.	Directors, Executive Officers and Corporate Governance	16
Item 11.	Executive Compensation	18
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	22
Item 13.	Certain Relationships and Related Transactions, and Director Independence	24
Item 14.	Principal Accounting Fees and Services	24

	PART IV

Item 15.	Exhibits and Financial Statement Schedules	25
Item 16.	Form 10-K Summary	25

PART I

Item 1. General

Company Background

On March 7, 2025, Nanophase Technologies Corporation announced its rebranding as Solésence, Inc. (“Solésence,” “Company,” “we,” “our,” or “us”), marking a new chapter in its commitment to skin health innovation and consumer products across beauty, health, and wellness categories. Our corporate website has transitioned to solesence.com and investor relations information, including historical Nanophase financials and disclosures, is available at ir.solesence.com. Nanophase Technologies Corporation changed its legal name to Solésence, Inc. by amending its certificate of incorporation with the State of Delaware on March 10, 2025 and by filing a certificate of correction on June 3, 2025.

Solésence, along with its wholly owned subsidiary, Solésence, LLC (our “Solésence consumer products subsidiary”), is a leading innovator in scientifically driven health care solutions across beauty, health and wellness categories, protecting skin from environmental aggressors and enhancing the aesthetic appeal of health-enhancing products. Skin health, addressed through both our Consumer Products and our Active Pharmaceutical Ingredients (“APIs”), currently make up the great majority of our business, with additional revenue being generated from other legacy advanced materials applications. The Company was incorporated in Illinois on November 25, 1989, and became a Delaware corporation during November 1997. Our common stock trades on NASDAQ under the symbol SLSN. We have development and testing laboratories, and manufacturing capability in two locations in the Chicago, Illinois area.

Leveraging a platform of integrated patented and proprietary technologies, we create products with unique performance to enhance end-consumers’ health and well-being. We offer comprehensive production, starting with engineered materials, formulation development, and finished product development, through commercial manufacturing and packaging capabilities. Our expertise in materials engineering allows us to effectively coat and disperse materials on a nano and “non-nano” scale for use in a variety of markets in skin health, including for use in sunscreens as APIs. We believe our innovative approach to creating these materials gives us technological and competitive advantages in market. In addition to APIs, we produce our finished skin care, sun care, and color cosmetics products (“Consumer Products”) through the vertical integration of patented and proprietary technologies that offer unique skin health benefits. We offer these consumer products for sale to brands who ultimately sell products to consumers in both prestige and mass markets within the beauty industry. Solésence consumer products have received broad acceptance in the marketplace. Due to the enhanced efficacy and aesthetic qualities offered by our proprietary technology platform, Solésence consumer products satisfy growing consumer demands across a range of product formats and categories. The vertically integrated nature of Solésence consumer products helps us to develop ingredient technologies and formulas in tandem. We have leveraged this to develop specialized formulation know-how with our unique ingredients, improve efficiency, and avoid potential major supply chain challenges.  

Given our technological position, in addition to the historical market acceptance of our APIs for use in skin health products and sunscreens, we have seen rapidly growing sales for our suite of consumer products. Due to the expanding demand from our brand partners, we have further refined our strategy to reflect our view that consumer products should be the major focus of our growth strategy. Management believes that this growth is happening now due to a confluence of our technology and market conditions that favor the types of products we produce. We continue to see unprecedented demand for these products. Coupled with our expanded and growing expertise in these areas, we believe we are well positioned to enjoy growth into the future. This success had led us to focus our combined business-, ingredient technology-, and product-development capabilities on products that bring unique performance to this area. While we will continue to produce and sell materials to our other advanced materials customers, it is not our strategic focus, and we expect it to make up less of our total business over time. We may develop additional technologies or find unique applications outside of our core markets in the future, but to maximize the use of our resources today, we plan on expanding efforts in areas where we have proven we can deliver innovation and growth.

Consumer Products

During 2015 we were granted a patent on a new type of particle surface treatment (coating) — now called Original Active Stress Defense™ Technology. This became the cornerstone of our new product development in our consumer product line, with first revenue recognized during 2017.

We now offer a suite of three technology platforms under our Active Stress Defense™ family of technologies, each of which offers a distinct market advantage in terms of performance, aesthetics, and/or “clean” positioning in UV and environmental protection. We design and market flexible formulas that allow for adoption by a range of brands with different market positions across beauty, health, and wellness. In 2020, consumer products surpassed our personal care APIs in terms of total revenue. We believe that Solésence consumer products offer the greatest growth potential of any product line in any market in the Company’s history.

We continue to develop and expand our in-house formulating capability, through which we have created, and now sold, more than 950 SKUs of fully formulated finished cosmetic products in markets focused on skin health, with the majority in prestige beauty. Products developed and sold through our consumer products line are all produced under the requirements of current Good Manufacturing Practice standards (“cGMP”), as enforced by the U.S. Food and Drug Administration (“FDA”), which enables us to leverage the expertise we developed in the manufacture of personal care ingredients. Although our Solésence products are fully formulated for consumer use, we do not sell directly to consumers or distribute products to consumers under the Solésence brand through intermediaries or resellers. Instead, we sell our consumer products to customers as market-ready products, as customized white label products, or as custom-developed products, in each case, for sale or distribution to consumers under our customers’ brand names. For this reason we call our consumer products customers “brand partners.”

Solésence received two industry accolades. In July 2022 at Cosmoprof North America, Solésence was awarded the Cosmopack North America Award for best Formulation for our product, Multi-Cultural Magic SPF 50+ Featuring Solésence Kleair™, acknowledging the Company’s technology, formulation, and marketing know-how. In September 2022, Solésence was awarded the Cosmetics & Toiletries Allē Award for Most Significant Active Ingredient in Sun/Light Protection for Kleair™ technology. In early 2023, Solésence was named number 2 in the Beauty category of Fast Company’s World’s Most Innovative Companies list. This prestigious award recognizes the impact we have on the industry we serve and the lives of the people who use our products. In July of 2023, Solésence was again awarded the Cosmopack North America Award for best Formulation, this time for its product Natural Glow Face Oil SPF 40+ featuring Kleair™ and Bloom™ technology, recognizing our continued innovative approach to formulation and product innovation. Also in 2023, Solésence won the 2023 Beauty Matter NEXT Award for Best Contract Manufacturer and was a winner of the 22nd Chicago Innovation Awards. In 2024, Solésence won its third consecutive Cosmopack North America Award for best Formulation for its Lip Oil, SPF 40+, making Solésence the first-ever third-time winner of the Award in Cosmopack North America’s history. Also in 2024, Solésence won its second Cosmetics & Toiletries Allē Award in the Finished Formula-Prestige category for its market-ready product, Soft Glow SPF 50+. Most recently in March 2025, Solésence won its third consecutive Cosmetics & Toiletries Allē Award and its second in the Finished Formula-Prestige category for its finished formula Au Lait Face Milk SPF 50+. To-date Solésence has won 9 awards across product and ingredient innovation and service, highlighting the Company’s know-how across technology, formulation, and marketing.

Personal Care Ingredients

Prior to 2020, our largest product had been the manufacture and sale of APIs in the skin health and sun care markets, which we deliver to customers through strategic partnerships. We continue to manufacture and supply hundreds of metric tons of surface engineered zinc oxide and titanium dioxide ingredients to our customers annually, and these are used by major global consumer products companies for sunscreens and skin health-focused personal care products. We produce these products using proprietary coating and dispersion technologies that comply with the requirements of cGMP and are classified as Active Pharmaceutical Ingredients, or APIs, by the FDA.

Advanced Materials

A third product for us has historically been the manufacture and sale of advanced nanoparticle materials, including a material used in life science applications to enhance the performance of PCR test methods. We continue to service other profitable markets where we have had a degree of success in the past, including applications in food packaging and coatings, but they are not our strategic focus and related future development in these areas are not being prioritized.

Sources and Availability of Raw Materials

Most of the raw materials we use are readily commercially available. In some cases, we rely on sole-source processors of materials that utilize an array of worldwide sources for the raw materials that they process to our specifications. However, we require very high purity zinc for our personal care applications that have occasionally seen shortages in prior years. Although we currently believe we have developed adequate commercial relationships to supply the necessary raw materials for our business which are not readily commercially available, our business is subject to the pricing and availability of certain raw materials.

Some of the raw materials that are critical to the production of our products and parts that are critical to the operation of our equipment are sourced from single suppliers, suppliers from China and Korea. However, we do not knowingly source any materials from the Xinjiang region of China. We continue to monitor delays in shipping exports from China and Korea. The Company is monitoring the potential impacts of Chinese tariffs on our cost of materials sourced from China. Despite the Russian invasion of Ukraine, we do not anticipate any directly related supply disruptions as we do not knowingly source any materials directly from either country. Additionally, we could be disrupted by conditions unrelated to our business operations or that are beyond our control, including but not limited to international trade restrictions and conditions related to epidemics. We typically maintain no less than one month’s supply of raw materials and parts that are sourced from sole suppliers and make efforts to identify additional suppliers who may be able to provide such raw materials or parts. The Company is actively taking steps to reduce the number of singularly sourced raw materials.

Markets and Distribution

Consumer Products

We partner with beauty, health, and wellness brands on a global basis to develop, manufacture and market products that enhance lives through healthy skin. These products are fully formulated solutions built around proprietary Solésence technologies, which are designed to improve skin health for all human beings, and are aligned with consumer demand. Our consumer products customers (“brand partners”) are positioned in skin care, makeup/cosmetics, and sun care markets, with the majority of our partners operating in the prestige beauty segment with retail, direct-to-consumer, and/or omnichannel strategies. This represents a move downstream from our previous position — one of providing ingredients to manufacturers — to offering finished consumer products that we believe offer a clear and distinct market advantage relative to both aesthetics and performance. With our first consumer product revenue recognized during 2017, we had our first material amounts of consumer product revenue in 2018 and experienced significant expansion of these sales through 2025. Consumer products brand partners have experienced strong growth as our products have seen broad acceptance from retailers, adoption by consumers, and recognition by third-party media outlets through awards and accolades. We expect our consumer products to enhance both our degree of control of the business development cycle, and to further enable our ability to grow rapidly.

Personal Care Ingredients

In addition to serving strategic partners in diverse markets and geographic locations, we will continue to devote resources to maintaining and growing our relationship with BASF Corporation (“BASF”), the largest customer in our personal care ingredients product group. This has been a successful relationship that we expect will contribute to our future growth. BASF, which describes itself as the world’s leading chemical company with annual revenue of approximately $77 billion, is a “globally leading supplier of sustainable high-performance ingredients for the personal care industry,” with recognized brands, significant revenue, and a broad sales network. BASF is primarily responsible for the business development cycle and maintains the direct customer relationships. We have a long-term exclusive relationship with BASF, primarily to provide nano-scale zinc oxide-based products made to BASF’s specifications to be used as ingredients in personal care cosmetics, with sunscreens and daily wear products being the dominant applications. These materials differ significantly in their specifications from those used in the consumer products line. 

Research and Development

Most of our research and development since 2015 has been directly related to the development of Solésence consumer products. We endeavor to either meet specific customer needs or develop solutions to address unmet or emerging needs where we believe our technologies will offer a distinct advantage. Our efforts in research and development, cosmetic formulating, process engineering and advanced engineering groups are focused in three major areas: 1) application development for our products; 2) creating or obtaining additional technology platforms that have the capability to serve multiple beauty or life science markets; and 3) continuing to improve manufacturing operations to improve process reliability and reduce costs.

Our total research and development expense, which includes all expenses relating to our technology and advanced engineering groups was $4.1 millions and $3.8 million during the years ended December 31, 2025 and 2024, respectively. This represents our share of these expenses only and does not take into account amounts spent by any of our customers in support of new product development. Our future success will depend in large part upon our ability to develop products that bring a high degree of value to our customers. Through the two-year period ended December 31, 2025, we had cumulative research and development expenses of approximately $7.9 million and $0.1 million cumulative capital expenditures on lab and testing equipment improvements.

Competitive Advantage

Through our Solésence consumer product line, our Active Stress Defense™ platform of proprietary technologies – which includes Solésence Kleair™ – offers unique skin health benefits through performance-related and aesthetic advantages in environmental protection skin health products, including UVA/UVB, pollution and HEV (blue) light protection. These technologies expand access to healthy skin by improving both the product experience across the full range of skin tones while also leveraging a unique versatility that enables a variety of novel formats to reach the full range of product preferences and lifestyles. By combining our market awareness, proprietary dispersion capabilities and formulation know-how, our Solésence products enable our brand partners to expand the range of products within skin care and color cosmetics categories that can include sun and environmental protection and consequently fill a unique market segment which drives the growing demand for our consumer products.

Through our personal care ingredients product line, we believe that targeted collaborations with our long-standing customers will enable them to have a competitive advantage which will sustain and/or grow their market share in the sunscreen API market. Both the consumer products and the personal care ingredients lines have been positively impacted by the growing interest among consumers for mineral-based sunscreens, which management sees as a validation of the Company strategy.

Manufacturing Operations

We currently have manufacturing capacity based in two locations in the Chicago area. We develop and supply engineered materials and bulk finished goods in quantities ranging from grams to metric tons. All facilities are registered under the ISO 9001, American National Standard, Quality Management System Requirements, ISO 22716 American National Standard, Environmental Management System Requirements, and ISO 14001, American National Standard, Environmental Management System Requirements. We are compliant with cGMP for products under U.S. Food and Drug Administration (“FDA”) regulation, applying to the manufacture of APIs and OTC Finished Dosage Form materials (primarily used in sun protection). We have registered some of the chemicals we ship to customers in Europe pursuant to the European Chemical Agency’s regulations issued to date pertaining to Registration Evaluation and Authorization of Chemicals (“REACH”). Currently, we have registered Zinc Oxide, Aluminum Oxide, Iron Oxide and Octyltrimethoxysilane under REACH. The Company supports our Brand Partners GMP site license activities for our consumer products in Canada and Australia.

Our operations employ a cellular, team-based manufacturing approach, where workers operate in work “cells,” under a lean manufacturing environment to continuously advance and improve production capabilities. We have also developed a highly flexible workforce that has been cross trained to allow it to be employed broadly across our manufacturing processes. Beginning in late 2019, we also began to employ a significant number of temporary operators to assist us in supporting the production of our Solésence customer products. Our manufacturing approach, targeted engineering actions, and capital investment have resulted in continuing process innovations and improvements that have reduced the variable manufacturing cost significantly over the past several years, while increasing our capacity to meet demand.

We are committed to a Lean Six Sigma manufacturing approach, to the extent possible given a certain measure of irregular demand, where we are able to reduce excess labor and manage the lowest practical inventory and supply levels in order to minimize working capital demands. This approach complements two of our major operational goals - (1) to increase output without adding unnecessarily to existing equipment and (2) to continually reduce production costs while consistently producing high quality products.

Intellectual Property and Proprietary Rights

We rely on a combination of patent, trademark, copyright, trade secret and other intellectual property laws, nondisclosure agreements and other protective measures to protect our intellectual property. In addition to obtaining patent and trademarks based on our inventions and products, we may also license certain third-party patents from time-to-time to expand our technology base.

As of the date of this filing, we own 11 U.S. patents and 4 pending U.S. patent applications. We also own 123 foreign patents and patent applications consisting of 91 issued or allowed foreign patents and 32 pending foreign patent applications. All of the pending and owned foreign patents are counterparts to domestic filings covering our platform of particle technologies and surface treatments. All of the Company’s patents and patent applications relate to health and wellness.

Competition

Within each of our targeted markets and product applications, we face potential competition from contract manufacturers and developers, advanced materials and chemical companies, and suppliers of traditional materials. In many markets, the actual or potential competitors are larger and more diversified than we are; however, we believe we focus on market segments and opportunities where our materials and related technologies are superior to those of our competitors, often due to our abilities to produce highly engineered ingredients to meet specific performance requirements, develop solutions for customers’ specific applications, and in the case of consumer products line, finished products that impart benefits of these technologies with tactile, visual, and performance characteristics in line with consumer need and demand.

With respect to traditional suppliers, we may compete against lower priced traditional materials for certain customer applications. In some product or process applications the benefits of using advanced materials do not always justify a process change or outweigh their frequently higher costs.

We believe that our material technologies and manufacturing platforms are strong. We believe we are well-positioned with our platform of integrated commercial materials technologies.

Solésence consumer products face competition from a wide variety of offerings in health, beauty, and wellness categories. Solésence products compete with existing solutions as well as new solutions from various sources, including other product developers and manufacturers who seek to serve skin care brands and integrated brands who also manufacture their own products in-house, and we must differentiate our value proposition in order to gain traction in this marketplace. The complexities of sunscreen regulation and the nuances of the development and manufacture of sunscreen products present a barrier for brands with integrated manufacturing in other skin care and cosmetics areas. Still, several Solésence consumer products customers have internal development and manufacturing capabilities that are similar to the capabilities of Solésence and can serve as indirect competition to our products and services. We believe that our Solésence consumer products technologies and our expertise in the nuances of formulating products that contain UV protection, coupled with our capability to produce novel formats, will allow us to be a competitive player in this market on a sustainable basis.

Governmental Regulations, Including Climate Change

The manufacture and use of certain products that contain Active Pharmaceutical Ingredients are subject to governmental regulations. As a result, we are required to adhere to the cGMP requirements of the FDA and similar regulations that include testing, control and documentation requirements enforced by periodic inspections. We also comply with the European Chemical Agency’s regulations issued to date pertaining to the chemicals we have registered under REACH. In early 2022, we were granted site clearance by Australia’s TGA for the full finished product manufacture of creams, lotions, sprays, sticks and all topical sunscreen forms. TGA site clearance is legally required for brands to market Solésence-made products as primary sunscreens in Australia. Our initial focus will be on establishing a footprint with both new and existing Solésence brand partners, to enable the sale of our patented skin health finished products as primary sunscreens.

We are committed to environmental health and safety (“EH&S”). We believe we comply with all applicable exposure limit standards issued by the United States Department of Labor’s Occupational Health and Safety Administration (“OSHA”). Because nanotechnology remains an emerging and evolving science, there are no currently required measurements or personal protective equipment available that are specific to nanoparticle safety. Accordingly, we rely on general chemical safety and process safety requirements to identify safe personal protective equipment and appropriate handling protocols. We believe that we have taken a leadership position on EH&S in our operations and have internal and external review and monitoring of our practices.

In addition, our facilities and operations are subject to the plant and laboratory safety requirements of various environmental and occupational safety and health laws. We believe we are in compliance with all such laws and regulations, and to date, those regulations have not materially restricted or impeded operations. Further, we believe our processes to be highly efficient, generating very low levels of waste and emissions. For this reason, we do not view issues surrounding climate change and any currently foreseeable related regulations as materially impacting our business and financial statements, beyond any inestimable impact on the macro-economic environment.

We have taken a responsible, proactive approach to EH&S by implementing appropriate procedures and processes to have our facilities registered under ISO 14001, American National Standard, Environmental Management System Requirements. We are also involved with leading industry groups that are defining nanomaterial standards and protocols. These currently include the ASTM International Committee on Nanotechnology, and the US TAG to ISO TC 229 Nanotechnology committee managed by the American National Standards Institute committee (ANSI). We also participate in FDA reviews relative to cosmetic and applicable drug applications. We have a full-time, advanced degreed professional, along with a supporting staff, who spend a significant amount of time managing governmental regulation compliance and EH&S.

Employees

On December 31, 2025, we had a total of 115 full-time employees, 15 of whom hold advanced degrees. Additionally, we have a number of temporary, and temporary-to-permanent employees, typically 90 to 225 on a demand-driven basis, and a number of contractors with specific industry experience that have become a part of our talent pool. We have no collective bargaining agreements and believe that we have a strong relationship with our employees, whom management believes represent the strength of our Company.

Backlog

We do not believe that a backlog as of any particular date is indicative of future results. Our sales are primarily pursuant to purchase orders for delivery of our Solésence formulated products, personal care ingredients, and advanced materials. We have some agreements that give customers the right to purchase a specific quantity of ingredients during a specified time period. These agreements, however, do not obligate the customers to purchase any minimum quantity of such ingredients. The quantities actually purchased by the customer, as well as the shipment schedules, are frequently revised during the agreement term to reflect changes in the customer’s needs. For these reasons we do not believe that such agreements are meaningful for determining backlog amounts.

Business Segment and Geographical Information

Our operations comprise a single business segment and all of our long-lived assets are located within the United States. See Note 13 to the accompanying Financial Statements for additional information.

Key Customers

A limited number of key customers account for a substantial portion of our commercial revenue. We are seeing the composition of these key customers change with the growth we are experiencing within our consumer products line, which has grown to exceed our personal care ingredients line significantly. For 2025, total consumer products revenue amounted to $54.9M or 88% of total revenue compared to $44.4M, or 85% for 2024. In particular, revenue from our three largest customers across all business areas included two of our consumer products customers and our largest customer in personal care ingredients (BASF), constituted approximately 29%, 16%, and 10%, respectively, of our 2025 total revenue.

As our consumer products continue to represent more of our total revenue, we expect to see a number of smaller (sub-10% of revenue) customers represent a more significant portion of our total revenue. We have experienced this in 2025 and 2024 and expect it to continue in 2026 and beyond.

While our agreements with BASF are long-term agreements, they may be terminated by BASF under certain circumstances with contractually required notice and do not provide any guarantees that BASF will buy our products. The loss of one of our largest customers or the failure to attract new customers could have a material adverse effect on our business, results of operations and financial condition. To reduce the impact of having a high concentration of sales to a limited number of customers, we have pursued new customers through our market focused business model, and particularly through our consumer products. To the extent we are successful in adding a large number of customers through this model, and maintaining or expanding our existing partners, we believe we will be able to best manage the risks associated with customer concentration.

Forward-Looking Statements

We want to provide investors with more meaningful and useful information. As a result, this Annual Report on Form 10-K (the “Form 10-K”) contains certain “forward-looking statements”, as defined in Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). These statements reflect our current expectations of the future results of our operations, performance and achievements. Forward-looking statements are covered under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. We have tried, wherever possible, to identify these statements by using words such as “anticipates”, “believes”, “estimates”, “expects”, “plans”, “intends” and similar expressions. These statements reflect management’s current beliefs and are based on information now available to it. Accordingly, these statements are subject to certain risks, uncertainties and contingencies that could cause our actual results, performance or achievements in 2026 and beyond to differ materially from those expressed in, or implied by, such statements. These risks, uncertainties and factors include, without limitation: our ability to be consistently profitable despite the losses we have incurred since our incorporation; a decision by a customer to cancel a purchase order or supply agreement in light of our dependence on a limited number of key customers; our potential inability to obtain working capital when needed on acceptable terms or at all; our ability to obtain materials at costs we can pass through to our customers, including high purity zinc, and other items impacted by supply chain pressures, including tariffs; uncertain demand for, and acceptance of, our Solésence products, and our advanced materials; our manufacturing capacity and product mix flexibility in light of customer demand; our limited marketing experience, including with our suite of consumer products; changes in development and distribution relationships; the impact of competitive products and technologies; our dependence on patents and protection of proprietary information; our ability to maintain an appropriate electronic trading venue for our securities; the impact of any potential new governmental regulations, especially any new governmental regulations focusing on the processing, handling, storage or sale of nanomaterials as it could impact our personal care ingredients business, that could be difficult to respond to or costly to comply with; business interruptions due to unexpected events or public health crises, including viral pandemics such as COVID-19; and the resolution of litigation or other legal proceedings in which we may become involved. In addition, our forward-looking statements could be affected by general industry and market conditions and growth rates. Readers of this Form 10-K should not place undue reliance on any forward-looking statements. Except as required by federal securities laws, we undertake no obligation to update or revise these forward-looking statements to reflect new events or uncertainties.

Investor Information

We are subject to the informational requirements of the Exchange Act and, accordingly, file periodic reports, proxy statements and other information with the Securities and Exchange Commission (the “SEC”). Such reports, proxy statements and other information may be obtained by visiting the Public Reference Room of the SEC at 100 F Street, N.E., Washington, DC 20549 or by calling the SEC at 1-800-SEC-0330. In addition, the SEC maintains an Internet site (http://www.sec.gov) that contains reports, proxy and information statements and other information regarding issuers that file electronically.

Financial and other information may also be accessed at our website. The address is to ir.solesence.com. We make available, free of charge, copies of our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after filing such material electronically with, or otherwise furnishing it to, the SEC, and intend to make all such reports and amendments to reports available free of charge on our website. We have included our website address throughout this Form 10-K as textual references only. The information contained on, or accessible through, our website is not incorporated into this Form 10-K.

Item 1A. Risk Factors

Not required for a smaller reporting company.

Item 1B. Unresolved Staff Comments

Not required for a smaller reporting company.

Item 1C. Cybersecurity

Risk Assessment and Strategy

The Company regularly evaluates cybersecurity risk from computer viruses and more sophisticated and targeted cyber-related attacks such as ransomware, as well as cybersecurity failures resulting from human error and technological errors.

Our overall strategy in combatting known cybersecurity risks includes a variety of individual tactics, including:

●

The use of antivirus software, virtual private networks, email security, as well as other software to prevent and detect data intrusions.

●

The deployment of updates and patches as they are available and maintaining the current versions of major software to reduce the exposure to vulnerabilities.

●

If necessary, the use of third-party security experts if and when an incident is detected.

We are not aware of having experienced any material cybersecurity incidents in 2025. We are not aware of any existent cybersecurity threats that would materially affect, or are reasonably likely to materially affect, our business strategy, results of operations or financial conditions.

Management Oversight

Day-to-day management of cybersecurity threats is conducted by our information technology consultant which is charged with identifying and reporting threats to senior management, which then reports to the Board of Directors.

Board Oversight

The Board of Directors is responsible for oversight of management’s efforts to eliminate cybersecurity risks.

Item 2. Properties

As of the end of 2025 we operate two facilities in the Chicago suburbs - a 36,000 square-foot production, research and headquarters facility in Romeoville, Illinois and a 261,000 square-foot production and warehouse facility in Bolingbrook, Illinois. In late 2025 we consolidated our manufacturing operations in Burr Ridge, Illinois into our production facility in Bolingbrook.

The Romeoville facility houses our headquarters, advanced engineering, manufacturing (including particle coating, particle dispersion and pilot-scale manufacturing), and research and development with three applications development and formulating laboratories. The Romeoville facility has a quality control laboratory designed for the dual purposes of validating operations to cGMP and ISO standards and production process control. This laboratory is equipped to handle many routine analytical and in-process techniques that are currently required. All Romeoville manufacturing processes are registered under ISO 9001, ISO 22716 and ISO 14001, and we believe that the particle coating processes used for our ingredients and fully formulated sunscreens and cosmetic products for personal care are in compliance with the cGMP requirements of the FDA. The Romeoville site is registered with the FDA for API manufacturing, manufacturing, and packaging.

The Bolingbrook facility houses our warehousing operations, sunscreen lotions manufacturing, dispersion manufacturing, filling and assembly of our consumer products and additional quality control spaces. The Bolingbrook facility is registered with the FDA for OTC drug manufacturing and packaging, with the site registered under ISO 9001, ISO 22716 and ISO 14001, and we believe that the particle coating processes used for our ingredients and fully formulated sunscreens and cosmetic products for personal care are in compliance with the cGMP requirements of the FDA. The Bolingbrook site is registered with the FDA for API manufacturing, manufacturing, and packaging.

We lease our Romeoville and Bolingbrook facilities. The Romeoville lease term was extended to January 31, 2028, in August 2024. During December 2021, we entered into a Standard Form Industrial Lease for a new facility in Bolingbrook, Illinois, amended May 12, 2025 which, among other things, will end in May of 2032, with options to extend this lease at market rent for each of three concurrent five-year periods.

With the addition of the Bolingbrook space in 2021, we believe that our leased facilities will provide sufficient capacity to fulfill current known customer demand as well as allow for the creation of substantial additional space to enable expansion of key production processes. We believe we will be able to expand certain operations, and consolidate others, to support additional growth in an economically efficient manner. We believe that our capital expenditures made in 2025, and projected for 2026, will support currently anticipated demand from existing and expected customers through 2026 and into 2027. Management continues to spend considerable time determining how best to optimize our facilities to maximize growth over the next few years. Our actual future capacity requirements will depend on many factors, including new and potential customer acceptance of our current and potential engineered materials, applications and products, both expected and currently unplanned growth from existing customers, continued progress in our research and development activities and product testing programs and the magnitude of these activities and programs.

Item 3. Legal Proceedings

As previously disclosed, on October 31, 2025, we entered into a Confidential Settlement Agreement and Release (the “Settlement Agreement”) with Solarium Brands, LLC and A-Frame Brands, LLC (collectively, “Solarium”). Pursuant to the Settlement Agreement, we and Solarium agreed to settle and compromise disputes arising from certain consumer personal care products that we previously manufactured for and sold to Solarium. As part of the Settlement Agreement, Solarium agreed to pay us a one-time settlement payment of $675,000 on or before January 15, 2026, which payment was made in December 2025

Item 4. Mine Safety Disclosures

Not applicable.

PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information; Holders; Dividends

Our common stock is traded under the symbol SLSN on the NASDAQ stock exchange. The following table sets forth, for the periods indicated, the range of high and low sale prices for our common stock on the NASDAQ stock exchange or the OTCQB marketplace (where our common stock was traded prior to April 2025):

	High		Low
Fiscal year ended December 31, 2025:
First Quarter	$	3.00	$	2.05
Second Quarter		5.21		1.68
Third Quarter		4.48		2.54
Fourth Quarter		4.36		1.64
Fiscal year ended December 31, 2024:
First Quarter	$	0.98	$	0.43
Second Quarter		1.71		0.70
Third Quarter		1.65		1.33
Fourth Quarter		2.88		1.30

On March 30, 2026, the last reported sale price of our common stock was $0.90 per share, and there were 120 holders of record of our common stock.

We have never declared or paid any cash dividends on our common stock and do not currently anticipate paying any cash dividends or other distributions on our common stock in the foreseeable future. We intend to retain any future earnings for reinvestment in our business. Any future determination to pay cash dividends will be at the discretion of our Board of Directors and will be dependent upon our financial condition, results of operations, capital requirements and such other factors deemed relevant by our Board of Directors. Our Business Loan Agreements with Beachcorp, LLC (“Beachcorp”), Strandler, LLC (“Strandler”), and Libertyville Bank and Trust Company (“Libertyville”), respectively, require us to obtain the written consent of the lender prior to paying any cash dividends on our common stock.

Item 6. [Reserved]

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis should be read in conjunction with risks discussed in the financial statements and related notes thereto appearing elsewhere in this Form 10-K. When used in the following discussions, the words “anticipates,” “believes,” “estimates,” “expects,” “plans,” “intends” and similar expressions are intended to identify forward-looking statements. Such statements are subject to certain risks, uncertainties and contingencies that could cause actual results, performance or achievements to differ materially from those expressed in, or implied by, such statements. See the “Forward Looking Statements” section in Part 1, Item 1, of this Form 10-K.

Overview

Solésence is a health-oriented, science-driven company, focused on various skin health, beauty and wellness markets. Our primary skin health products are fully developed prestige skin care formulations with mineral-based UV protection enabled by our proprietary Active Pharmaceutical Ingredients (“APIs”), which are also marketed as APIs for sale to manufacturers of other types of skin health products, including sunscreens and daily care products. Additionally, we continue to sell products in legacy markets including medical diagnostics, architectural coatings, industrial coating applications, abrasion-resistant additives, and plastics additives applications— all of which currently fall into the advanced materials product category.

Critical Accounting Estimates

Management monitors the value of inventory for the effects of aging, obsolescence, and seasonality. Consistent with the provisions in FASB ASC 330-10-35, we adjust inventory valuation upon management’s determination that the potential for obsolete materials exist. The majority of the reserve is done by specific identification. Factors include inventory in quarantine, aging finished goods or obsolete materials as identified by management. In the application of this policy in 2025 and 2024, management deemed a portion of inventory will likely experience such an impairment and elected to apply a $2,721,000 and $1,987,000, respectively, inventory reserve in anticipation. Some of the materials in question are nearing expiration and therefore more difficult to sell, some represent soon-to-be obsolete products, and some are raw materials that we no longer use regularly.

Certain assumptions are necessary to assess the risk and uncertainty of financial information, such as cash flow projections, availability of capital if needed to support the ongoing operations of the business, and our expected compliance with contractual commitments. Any changes in those plans or assumptions could have a material impact on our liquidity and financial condition. While we have seen costs continue to increase on an inflationary basis as we enter 2026, it is our belief that we will be able to offset much of this cost as we gain greater production efficiencies and seek to increase our pricing where possible.

Results of Operations

Years Ended December 31, 2025 and 2024

Total revenue increased to $62,064 in 2025, compared to $52,347 in 2024. A substantial majority of our revenue for each year is from our largest customers, in particular, sales to our largest customer in skin care and sunscreen applications and finished skin health products marketed through our consumer products. Product revenue, the primary component of our total revenue, increased to $61,794 in 2025, compared to $51,890 in 2024. This increase was due to an increase in revenue from our consumer products partially offset by decreased personal care ingredients and advanced materials products.

Current Significant Customers

		For the years ended
		December 31,
Customer #	Product Category	2025			2024
1	Consumer Products		29	%		32	%
2	Consumer Products		16	%		–	%
3	Personal Care Ingredients		10	%		13	%
	Total		55	%		45	%

Cost of revenue generally includes costs associated with commercial production and customer development arrangements. Cost of revenue increased to $46,001 in 2025, compared to $36,159 in 2024. The increase in cost of revenue was primarily driven by higher materials and direct labor costs related to the increased sales volume. Also contributing to the higher cost of revenue was increased costs associated with quality and maintenance activities costs due to the increased sales volume. We expect to continue new materials development and dispersion technologies for personal care applications and for our formulated consumer products during 2026 and beyond, as part of our business model. At current revenue levels we have generated a positive gross margin, though margins can be impeded by the cyclicality of our demand, often leading to the Company not having enough revenue to efficiently absorb manufacturing overhead that is required to work with current customers and expected future customers. We believe that our current fixed manufacturing cost structure is sufficient to support higher levels of revenue volume. The extent to which margins grow, as a percentage of total revenue, will be dependent upon revenue mix, revenue volume, our ability to cut costs and pass commodity market-driven raw materials increases on to customers, and the speed and efficiency with which we are able to scale up production for our Solésence products. We expect that, as product revenue volume increases, our fixed manufacturing costs will be more efficiently absorbed, which should lead to increased margins as we grow. We expect to continue to focus on reducing controllable variable product manufacturing costs, with potential variability related to the commodity metals markets and cost and wage inflation but may or may not realize gross margin percentage growth through 2026 and beyond, dependent upon the factors discussed above.

Research and development expense, which includes all expenses relating to the technology and advanced engineering groups, primarily consists of costs associated with the development or acquisition of new finished product formulations for skin care, new product applications for our skin care ingredients, and the cost of enhancing our manufacturing processes. This includes legal fees related to intellectual property development, protection, and maintenance. As an example, we are currently focusing the bulk of our resources on developing new product formulations, and related new technologies, as we expand marketing and sales efforts relating to our Solésence products. This work has led to several new products and additional potential new products. Our efforts in research and development, cosmetic formulating, process engineering and advanced engineering groups are focused in three major areas: 1) application development for our products; 2) creating or obtaining additional core materials technologies and/or materials that have the capability to serve multiple skin health-related markets; and 3) continuing to improve our core technologies to improve manufacturing operations and reduce costs.

Research and development expense increased to $4,090 in 2025, compared to $3,837 in 2024. In 2025 labor costs were higher than 2024 and legal and consulting costs were also higher in 2025 compared to 2024. We expect expenses for research and development to remain about the same or decrease slightly in 2026 depending on growth in our consumer products, and related technologies. This expense change will be dependent upon the success we have in developing new products, which adds significantly to outside testing fees to both enhance product development and comply with regulatory requirements.

Selling, general and administrative expense increased to $10,401 in 2025, compared to $7,219 in 2024. The net increase was largely attributed to an increase in legal costs and labor. We expect 2026 expenses in this area to be slightly lower due to controlling our administrative functions costs, including related staffing. The extent to which this occurs will be dependent upon growth.

Net interest expense increased to $931 in 2025, compared to $670 in 2024, increased usage of the debt facilities and partially offset by lower interest rates than in 2024. The interest expense for 2025 and 2024 related to interest paid relating to our revolving lines of credit for working capital funding and term loans supporting some of our equipment.

In Company-wide operations, we believe inflation has not had a material effect on our operations or financial position for 2025, although we have seen increases in our costs. We expect supplier price increases and wage and benefit inflation, both of which represent a significant component of our costs of operations, may have a material effect on our operations and financial position in 2026 and beyond. We will apply our best efforts to pass through cost increases to our customers. If we are unable to pass through any increases due to contractual limitations or conditions in our markets specifically, this could reduce margins and net income.

Liquidity and Capital Resources

Cash, cash proceeds and use of cash for 2025 and 2024 were:

	For the year ended December 31,
	2025			2024
Total cash	$	1,288,000		$	1,409,000
Cash (used in) provided by operating activities		(8,567,000	)		1,971,000
Net cash used in investing activities		(2,143,000	)		(4,558,000	)
Net cash provided by financing activities		10,589,000			2,274,000

The approximate $10,538,000 year-over-year increase in cash used in operating activities for the year ended December 31, 2025 was mainly due to the Company earning $1,790,000 in net income in 2025 compared to $4,235, payments made to reduce accounts payable and accrued expenses, and performance of deferred revenue obligations. Cash capital expenditures amounted to approximately $2,525,000 and $4,558,000 for the years ended December 31, 2025 and 2024, respectively. We did not dispose of or sell any assets during 2025 or 2024.

The Company maintains a credit agreement with Libertyville Bank & Trust to support our obligations under our leased manufacturing and warehouse space in Bolingbrook, Illinois. As of December 31, 2025 there was no outstanding borrowings on this line of credit. This credit agreement has a maturity of December 22, 2026, and the Company plans on renewing on a yearly basis.

On January 28, 2022, to support the working capital demands created by the commercial growth of the Company and its wholly owned subsidiary, Solésence, LLC, the Company entered into (i) an Amended and Restated Business Loan Agreement (the “A&R Loan Agreement”), with Beachcorp, LLC, (ii) a Business Loan Agreement (the “New Term Loan Agreement”) with Strandler, LLC, (iii) a Business Loan Agreement (the “New Revolving Loan Agreement” and together with the A&R Loan Agreement and the New Term Loan Agreement, the “Loan Agreements”) with Beachcorp, LLC, and (iv) three promissory notes in order to evidence the loans pursuant to the Loan Agreements (the “Notes”). Beachcorp, LLC and Strandler, LLC are affiliates of Mr. Bradford T. Whitmore, who beneficially owns a majority of the Company’s common stock and is the brother of Ms. R. Janet Whitmore, a director of the Company and the chair of the Company’s board of directors.

The Loan Agreements changed the terms of both the Company’s asset-based revolving loan facility (the “A/R Revolver Facility”) and the secured advance (the “Term Loan”, which was assigned from Beachcorp, LLC to Strandler, LLC) under the Master Agreement and provide a new asset-based revolving loan facility based on inventory (the “Inventory Facility”). The maximum borrowing amount under the A/R Revolver Facility increased from $6,000,000 to $8,000,000, with a borrowing base consisting of qualified accounts receivable of the Company. The maximum borrowing amount under the Inventory Facility was $4,000,000, with a borrowing base consisting of up to 50% of the value of qualified inventory of the Company. The Loan Agreements also extended the date for which all principal and accrued interest under the A&R Revolver Facility and the Term Loan are due from March 31, 2023 and March 31, 2022, respectively, to March 31, 2024, which was also the maturity date for the Inventory Facility. The Loan Agreements reduce interest on outstanding borrowings under the A/R Revolver Facility and the Term Loan from the prime rate plus 2% and 5.25% per year, to a floating rate equal to the prime rate plus 0.75%, which is also the interest rate for borrowings under the Inventory Facility. The amount of the Term Loan remains $1,000,000. The A/R Revolver Facility, the Inventory Facility and the Term Loan are all secured by all the unencumbered assets of the Company and subordinated to the Company’s revolving line of credit with Libertyville Bank & Trust.

On November 13, 2023 to support working capital demands the Company entered into (i) a new Promissory Note (“Bridge Note”) with Strandler, LLC, with a maximum borrowing amount of $2,000,000, interest rate at the prime rate plus 0.75%, and set to mature on May 13, 2024, and (ii) amendments to the Loan Agreements increasing the principal amount of the Inventory Facility to $5,200,000, increased the borrowing base to 55% of eligible inventory, up from 50% and extending the maturity date under the Loan Agreement to March 31, 2025. The Bridge Note was repaid in full in connection with the Purchase Agreement referred to below.

On March 1, 2024, the Company entered into a Securities Purchase Agreement (the “Purchase Agreement”), between the Company and Strandler, LLC (“Strandler”).

Pursuant to the Purchase Agreement, the Company issued to Strandler 15,000 shares of the Company’s Series X Preferred Stock (the “Series X Preferred Stock”) at a purchase price per share of $400, for total consideration of $6,000,000, in a transaction exempt from registration under the Securities Act of 1933, as amended, pursuant to Section 4(a)(2) thereof. The terms of the Preferred Stock are set forth in the Company’s Certificate of Designations to its Certificate of Incorporation, filed with the Secretary of State of the State of Delaware on March 4, 2024 (the “Certificate of Designations”).

Under the Purchase Agreement, the Company granted Strandler customary registration rights with respect to shares of the Company’s common stock, par value $0.01 per share (the “Common Stock”), it may receive in connection with any conversion of Series X Preferred Stock into Common Stock, as described below. For so long as any amount of Preferred Stock is outstanding, the Purchase Agreement also (i) prevented the Company from paying any dividend on any shares of the Company’s capital stock (other than dividends consisting solely of Common Stock or rights to purchase Common Stock), (ii) prevented the Company from repurchasing any Common Stock, and (iii) subject to certain permitted exceptions, restricted the Company’s ability to permit any lien or other encumbrance on Company assets.

At any time and from time to time, in whole or in part, following the Company properly filing an amendment (the “Certificate Amendment”) to its Certificate of Incorporation to increase the number of authorized shares of its Common Stock from 60,000,000 to 95,000,000, each share of Series X Preferred Stock was convertible, at the option of the holder, into 1,000 shares of Common Stock at no additional cost. If the Company had not properly filed, upon shareholder approval, the Certificate Amendment on or before August 1, 2024, then each share of Series X Preferred Stock would have been redeemable at the holder’s option, in whole or in part, without penalty or premium, at a redemption price equal to $420 per share (each, a “Redemption”). If the Company had failed to fully pay any Redemption within five days of receiving notice, all unpaid amounts will have born interest at a rate of 10% per annum. In addition, in the event of a Change in Control (as defined in the Certificate of Designations) of the Company, each share of the Series X Preferred Stock would have been redeemable at the option of the holder, without penalty or premium, at a redemption price equal to $420 per share. Upon any conversion of Preferred Stock into Common Stock by Strandler, Strandler is

SEC Form 10-K filed by Solesence Inc.