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HOUSTON, Texas – June 26, 2026 – Hartman vREIT XXI, Inc. announced that its Board of Directors, including all independent directors, has determined an estimated Net Asset Value (NAV) of $8.12 per share for the Company’s Class A, Class S, Class I and Class T common stock as of December 31, 2025. The estimated NAV was established to assist stockholders and broker-dealers in evaluating the Company and to support customer account statement reporting requirements under FINRA regulations. The Board’s determination was based on a comprehensive valuation process that included recommendations from the Company’s advisor, the Audit Committee, and independent property valuations prepared by Herrera Partners. “This estimated NAV reflects our disciplined approach to evaluating our portfolio and our dedication to keeping stockholders informed. Our continued commitment to providing investors with transparent and meaningful valuation information remains a priority,” said Allen Hartman, CEO of Hartman vREIT XXI.  Portfolio Highlights As of December 31, 2025, Hartman vREIT XXI’s portfolio included: The Company’s estimated net asset value attributable to common stockholders totaled approximately $75.1 million, or $8.12 per share, based on 9,245,987 shares outstanding. Independent Valuation Process The valuation process followed the Institute for Portfolio Alternatives’ Practice Guideline 2013-01 for publicly registered non-listed REITs. Independent valuations of the Company’s real estate assets were prepared by Herrera Partners using market-based capitalization rates and property operating data. The estimated NAV represents management’s assessment of the Company’s value as of December 31, 2025 and is intended solely as an estimate for reporting purposes. It does not represent a guarantee of realizable value, trading price, or liquidation proceeds. About Hartman vREIT XXI, Inc. Hartman vREIT XXI is a publicly registered, non-listed real estate investment trust focused on acquiring, owning, and operating commercial real estate assets throughout Texas. The Company’s portfolio consists primarily of office properties in strategically selected markets with a focus on long-term value creation through active asset management and leasing initiatives.

Ashford on the Bayou Refinance reflects strong property performance, high occupancy, and continued tenant demand HOUSTON, TX – June 15, 2026— Hartman Properties announced Ashford on the Bayou refinance was successful with a new $8,000,000 loan, replacing the property’s previous financing and securing long-term debt through a local banking institution. The refinancing represents a significant milestone for the property and reflects the continued strength of Ashford on the Bayou’s operating performance, tenant demand, and long-term market position. Currently 95% occupied, the property generates strong cash flow and has continued to attract and retain high-quality tenants despite ongoing challenges facing the broader office market. “Ashford on the Bayou has consistently demonstrated the qualities that lenders and investors value most, which is strong occupancy, stable cash flow, quality tenants, and proactive management. Securing long-term financing in today’s environment reinforces the strength of the property and positions us well for future success,” said Al Hartman, Founder and CEO of Hartman Properties. Located near Houston’s Energy Corridor, Ashford on the Bayou has benefited from sustained leasing momentum over the few years. Recent leasing activity includes a new lease with Walker Coffee Trading, L.P., a leading global coffee trading company, as well as a major lease renewal with BD Energy Systems, LLC, one of the property’s long-standing anchor tenants.  The combination of new tenant growth and tenant retention has contributed to the property’s strong operating performance and long-term stability with over 10,000 square feet of new tenant growth this year. “Today’s lending environment requires properties to demonstrate real performance, not just potential and Ashford on the Bayou continues to outperform. This refinancing validates the work that has gone into building one of the strongest-performing assets in our portfolio,” said Margaret Hartman, COO of Hartman Properties. The refinancing replaces the property’s previous loan and provides a long-term capital structure that supports continued operational excellence and strategic investment in the asset. As demand continues to concentrate in well-located, professionally managed office properties, Hartman Properties believes Ashford on the Bayou remains well-positioned to capitalize on future leasing opportunities while delivering stable performance. About Ashford on the Bayou Ashford on the Bayou is a Class B office property located along the Dairy Ashford corridor in West Houston. Positioned near Houston’s Energy Corridor, the property provides convenient access to Interstate 10, Beltway 8, and Westheimer Road. The property serves a diverse roster of tenants across the energy, professional services, and commercial sectors and is recognized for its attractive campus environment, professional management, and strong tenant retention. About Hartman Properties Hartman Properties is a Houston-based commercial real estate firm specializing in the ownership and management of office and commercial properties across major Texas markets. Known for hands-on management, tenant-focused operations, and strategic repositioning, Hartman Properties continues to deliver stable performance and long-term value through disciplined execution. For more information, visit hartman-properties.com.

Leading Houston pain management practice relocates to Hartman Properties’ premier medical office building HOUSTON, TX (June 10, 2026)— Hartman Properties announced that Performance Pain & Sports Medicine has signed a new 10-year lease for 6,650 square feet at 3100 Weslayan, further strengthening the property’s position as one of Houston’s premier destinations for healthcare providers.  Performance Pain & Sports Medicine will relocate its practice to 3100 Weslayan, a medical office building located in the heart of Houston’s Inner Loop. The long-term commitment reflects both the continued demand for high-quality medical office space and the property’s appeal to established healthcare providers seeking convenient access for patients and staff. The property is installing a new gurney-capable elevator that will be accessible to Performance Pain as well as all tenants within the building. This significant capital improvement enhances accessibility, expands the building’s functionality for medical users, and adds substantial value to the property. “Healthcare providers continue to recognize the value of well-located, professionally managed medical office environments. We are pleased to welcome Performance Pain & Sports Medicine to 3100 Weslayan and look forward to supporting their continued growth and success,” said Margaret Hartman, COO of Hartman Properties. The transaction was completed with representation from two leading Houston brokerage firms. CBRE represented the tenant, Performance Pain & Sports Medicine, while Transwestern represented the landlord, Hartman Properties. “3100 Weslayan has become a prime location for healthcare providers seeking a highly accessible, patient-friendly environment near the Houston Medical Center. We’re excited to welcome Performance Pain & Sports Medicine to the property and look forward to supporting their continued success. This lease further demonstrates the ongoing demand for well-managed medical office space in the Houston market.” Said Al Hartman, CEO of Hartman Properties.  As Houston’s medical office market continues to evolve, Hartman Properties remains focused on attracting healthcare providers to its portfolio of well-located, professionally managed properties. About 3100 Weslayan Located in Houston’s Weslayan corridor, 3100 Weslayan is a medical office property serving a diverse mix of healthcare providers. The property’s central location provides convenient access to River Oaks, Upper Kirby, West University, and the Texas Medical Center. About Hartman Properties Hartman Properties is a Houston-based commercial real estate firm specializing in the ownership and management of office and commercial properties across major Texas markets. Known for hands-on management, tenant-focused operations, and strategic repositioning, Hartman Properties continues to deliver stable performance and long-term value through disciplined execution. For more information, visit hartman-properties.com.

Houston, Texas – May 19, 2026– Hartman Properties announced its leasing results for the first quarter of 2026, reflecting continued momentum across its portfolio through both new leasing activity and tenant renewals. During Q1 2026, Hartman executed 11 new leases totaling 16,978 square feet and 10 renewal leases totaling 35,288 square feet, demonstrating strong tenant demand and retention across key assets. New Leasing ActivityNew leases were completed across both our San Antonio and Houston properties including, Village Pointe, Two Park Ten, Spectrum, Ashford on the Bayou (AOB), Willowbrook, and 11211 Katy Freeway. Notable new tenants include: Renewal and Expansion ActivityTenant retention remained strong, with several notable renewals and expansions, including: These renewals highlight continued tenant confidence and long-term commitment to Hartman’s properties. Leadership Perspective“Our first quarter results reflect steady demand across our portfolio and the strength of our leasing strategy,” said Al Hartman, CEO of Hartman Properties. “We are seeing continued interest from a diverse range of tenants, while also maintaining strong relationships with our existing tenants through renewals and expansions. This consistency is key to driving long-term value.” Leasing ExecutionThe Company’s leasing success was driven by the efforts of its brokerage team, including leasing agents Ami Figg and Kaila Brodeur, who played a key role in executing both new leases and renewals during the quarter. Portfolio PerformanceAll leases executed during the quarter aligned with Hartman’s focus on quality tenancy and efficient space utilization. Hartman Properties will continue to provide leasing updates on a quarterly basis as part of its ongoing commitment to transparency with investors and stakeholders. For more information, visit www.hartman-properties.com 

Houston, TX – April 28, 2026– Hartman Properties is pleased to announce the launch of its newly redesigned BIZSUITES website, alongside the appointment of Amy Herrera as Business Suite Executive Manager. The new BIZSUITES website (https://hartman-properties.com/bizsuites/) delivers prospective tenants and brokers with streamlined access to flexible office solutions, property availability, and leasing information across Hartman’s portfolio. The platform is designed to simplify the search process for small and growing businesses seeking turnkey office space. In conjunction with the website launch, Hartman Properties has appointed Amy Herrera as Business Suite Executive Manager. In this role, Herrera will oversee operations, leasing strategy, and tenant experience for the BIZSUITES platform. “Businesses today expect flexibility, speed, and transparency when it comes to office space, and BIZSUITES is built to deliver on those expectations,” said Al Hartman, CEO of Hartman Properties. “The launch of our new website makes it easier for tenants and brokers to identify and secure the right space, and with Amy Herrera leading the platform, we are well-positioned to scale this offering while maintaining a high-quality tenant experience.” Herrera brings a strong background in property management and client-focused operations. Her leadership will be instrumental in expanding the BIZSUITES offering and ensuring a consistent, high-quality experience across all locations. “I’m excited to lead the next phase of growth for BIZSUITES,” said Herrera. “Our focus is on providing flexible, professional environments that support businesses at every stage.” The combination of a digital platform and dedicated leadership positions BIZSUITES for continued growth as demand for flexible office space increases. For more information, visit https://hartman-properties.com/bizsuites/.

SAN ANTONIO, Texas – March 10, 2026 – Hartman Properties announced today that Village Pointe Shopping Center, a 54,246-square-foot retail center, has reached 100% occupancy following the execution of a new lease agreement. Since acquiring Village Pointe in December 2016, Hartman Properties has implemented a strategic leasing and asset management approach focused on curating a strong tenant mix and elevating the shopping experience. Located just off US Highway 281 between Brook Hollow Boulevard and Thousand Oaks, the center’s prime location and diverse retail offerings have positioned it as a valued shopping destination serving the North San Antonio market. This most recent lease, which brings the property to 100% occupancy, is with a trusted firearm retailer serving the San Antonio and Hill Country areas, M E Firearms. M E Firearms is a family-friendly gun shop specializing in custom builds, tactical, self-defense and hunting firearms, plus a full selection of accessories, armorer services, and ammunition.  “Village Pointe Shopping Center will allow us to provide expert-led training, from basic safety courses to advanced tactical medicine and defensive skills. We are very grateful to be part of the Village Pointe community and excited for our new partnership,” said CEO of M E Firearms. This tenant further strengthens the center’s position as a premier destination in San Antonio for sports and recreational equipment, joining established retailers such as 5.11 Tactical and Trek. The transaction was represented by Kaila Brodeur with Hartman Properties on behalf of the landlord and CBRE on behalf of the tenant. “This property has consistently maintained 90%+ occupancy, and we’re thrilled to have reached full tenancy,” said Margaret Hartman, COO at Hartman Properties. “It speaks to both the quality of the center and the strength of demand in this trade area.” “From the very beginning of the leasing discussions, it was obvious that Hartman truly cares about its tenants, prioritizing strong relationships and tenant success. Now that we have moved in, that commitment has been reinforced through their ongoing support and professionalism, making the entire experience even more positive. The leasing process with Hartman and the Village Pointe team was exceptionally easy, smooth, and professional — from initial discussions through to completion — allowing us to focus on serving customers without unnecessary hurdles,” said CEO of M E Firearms. “Achieving full occupancy at Village Pointe underscores our commitment to creating value for tenants and investors alike,” said Al Hartman, CEO of Hartman Properties. “We’re proud to provide a dynamic retail environment that serves the community and supports the success of our tenants.” Hartman Properties remains focused on maintaining operational excellence, fostering strong tenant relationships, and driving sustainable growth across its portfolio. For more information about Village Pointe, visit www.hartman-properties.com. About Hartman PropertiesHartman Properties is a Houston-based commercial real estate firm specializing in the acquisition, ownership, and management of office and retail properties across major Texas markets. With a hands-on approach to asset management and a focus on tenant satisfaction, Hartman Properties delivers consistent performance and long-term value through disciplined execution. For more information, visit www.hartman-properties.com.

HOUSTON, TX — Hartman Properties, a Houston-based commercial real estate owner and operator, today announced a record year of leasing performance across its Texas portfolio—highlighted by strong new leasing volume, substantial renewal activity, and continued demand for well-managed, strategically located office assets. In 2025, Hartman Properties executed 118 total new and renewal leases totaling 266,927 square feet, reflecting the portfolio’s stability, leasing momentum, and tenant confidence. 2025 Leasing Results • Portfolio New Leases: 74 totaling 112,822 SF• Portfolio Renewal Leases: 44 totaling 154,105 SF• Total New + Renewal Leases: 118 totaling 266,927 SF “Great real estate isn’t just location—it’s leadership, responsiveness, and a commitment to helping tenants thrive,” said Al Hartman, Founder of Hartman Properties. “When companies choose to expand and renew with you year after year, it’s the clearest proof that your buildings are delivering real value.” “Our 2025 leasing performance reflects a healthy, stable portfolio and the market’s continued demand for professionally managed buildings that operate like true business environments,” said Allen R. Hartman, Founder of Hartman Properties. “We’ve built a platform designed to compete in today’s office market—focused on strong tenant experience, disciplined operations, and spaces that support long-term growth.” Margaret Hartman, COO of Hartman Properties, added: “We’ve been highly intentional about upgrading and repositioning key assets—especially where tenant demand is accelerating. Our team is creating environments where businesses can grow, teams want to show up, and our buildings can outperform their submarkets.” Largest New Leases of 2025Hartman Properties’ new leasing activity in 2025 was driven by a diverse roster of tenants spanning finance, engineering, energy, healthcare, and professional services. Highlights include:   Jefferson Capital Systems, LLC — 10,235 SF — The Spectrum Building BW Offshore USA Management, LLC — 8,844 SF — Timberway II DPIS Engineering, LLC (dba Arcxis) — 8,110 SF — The Spectrum Building Walker Coffee Trading, L.P. — 4,552 SF — Ashford on the Bayou Gilbert Family Practice — 2,950 SF — 3100 Weslayan Offshore Analysis & Research Solutions, LLC — 2,980 SF — 16420 Park Ten Amase, Inc. — 2,552 SF — The Willowbrook Building Largest Renewals of 2025Renewal volume remained a major strength in 2025, with multiple anchor tenants extending their commitments: • Berkeley Eye Institute, P.A. — 32,015 SF total renewed — 3100 Weslayan • BD Energy Systems, LLC — 16,831 SF renewed — Ashford on the Bayou • RGN-Houston XL, LLC — 11,999 SF renewed — 1400 Broadfield• Zap Engineering — 8,599 SF renewed — Timberway II 2026 Outlook: Houston Office Market Tailwinds Favor Well-Positioned, Amenitized PropertiesLooking ahead, Hartman Properties expects 2026 to continue rewarding owners who can deliver quality space, strong management, and tenant-focused flexibility.Houston’s office market remains highly segmented, with demand concentrating in higher-quality, well-located buildings—a trend consistently noted by major broker research, including CBRE’s characterization of Houston as a “tale of two markets,” where top-tier assets drive leasing outcomes. At the same time, broader supply dynamics are becoming more supportive. JLL reports U.S. office development is at an all-time low, with completions projected to drop sharply into 2026—tightening the competitive set for owners who invest in performance and tenant experience. Houston’s economic outlook also supports demand stability, with regional forecasts pointing to continued job growth in 2026—particularly led by healthcare—an important driver for Hartman’s medical-oriented strategy at assets such as 3100 Weslayan. Colliers similarly notes improving market momentum and an overall vacancy rate improvement in 2025, reinforcing that tenants remain active and selective rather than absent—creating opportunity for portfolios that are positioned correctly. “As the market continues to reward the best-run buildings, we believe Hartman is extremely well-positioned,” said Margaret Hartman. “Our focus in 2026 is straightforward: keep winning high-quality tenants, keep renewing great tenants, and keep investing where the demand is going—especially in Houston’s strongest business corridors.” About Hartman PropertiesHartman Properties is a Houston-based commercial real estate firm specializing in the ownership and management of office and commercial properties across major Texas markets. Known for hands-on management, tenant-focused operations, and strategic repositioning, Hartman Properties continues to deliver stable performance and long-term value through disciplined execution.For more information, visit www.hartman-properties.com.

Strategic refinancing strengthens Hartman Properties’ financial position and funds capital improvements that will enhance 3100 Weslayan’s status as a premier medical office building in Houston’s thriving healthcare corridor. Houston, TX – Hartman Properties has successfully completed the refinancing of its premier medical office property, 3100 Weslayan, through a $6 million loan provided by a local regional bank reinforcing the company’s continued confidence and strength in Houston’s medical office real estate sector. The loan was secured by HARTMAN WESLAYAN 3100 21, LLC, a Delaware limited liability company, and HARTMAN 3100 WESLAYAN 10 LP, a Texas limited partnership. The financing carries a floating interest rate of Prime + 0.50% (currently 7.50%), with $1.3 million held back to fund capital improvements at the property. These enhancements will include upgrades to building systems, lobby renovations, and modernization of tenant spaces — further strengthening the property’s competitive position in Houston’s rapidly expanding healthcare corridor. “This successful refinancing reflects Hartman Properties’ continued financial strength and our commitment to enhancing the long-term value of 3100 Weslayan,” said Al Hartman, Founder and CEO of Hartman Properties. “We’re proud to partner with a local regional bank on this transaction, which supports our mission of delivering high-quality, well-located office and medical space for Houston’s growing healthcare community.” Reinforcing Houston’s Healthcare Corridor Located at 3100 Weslayan Street in Houston’s Greenway Plaza district, the four-story, 78,087-square-foot Class A medical office building has become a cornerstone of Hartman Properties’ portfolio. With 78% occupancy and an expanding roster of top medical tenants — including Berkeley Eye Center and Gilbert Family Practice — the property serves as a vital hub within Houston’s prime medical corridor, connecting the Texas Medical Center, River Oaks, and major city thoroughfares. “This refinance ensures that Hartman Properties can continue advancing its vision for 3100 Weslayan — to create one of Houston’s most desirable destinations for premier medical and professional tenants,” added Allen R. Hartman. “The planned capital improvements will enhance the tenant experience, increase operational efficiency, and drive long-term performance for both our tenants and investors.” Margaret Hartman, Chief Operating Officer of Hartman Properties, added, “The strength of our portfolio lies in our disciplined investment strategy and our ability to adapt to shifting market conditions. This refinancing demonstrates the confidence lenders have in Hartman Properties and our proven track record of delivering consistent returns while continuously improving the quality and performance of our assets.” The new financing provides total proceeds of $6,000,000, with $4,700,000 in available funds and a $1,300,000 capital improvement reserve designated to further modernize and elevate the asset. About Hartman PropertiesHartman Properties is a Texas-based commercial real estate investment and development firm specializing in repositioning and managing high-quality officeproperties across key Texas markets. Guided by a tenant-first philosophy and visionary leadership, Hartman Properties continues to create environments that empower professionals, strengthen communities, and deliver long-term value for investors.www.hartman-properties.com 

From 69% to 96%– Ashford on the Bayou showcases exceptional leasing momentum and post-pandemic resilience under Hartman leadership. HOUSTON, TX – Hartman Properties, one of Texas’ most respected commercial real estate firms, is proud to announce a significant milestone at Ashford on the Bayou, one of the company’s flagship office assets in the Houston Energy Corridor. After three years of intentional repositioning, capital improvements, and hands-on tenant engagement, Ashford has become a case study in how strategic asset management can drive long-term value—even in a challenging office market. Since July 2023, Ashford on the Bayou has almost doubled its occupancy—growing from 55% in July 2019 to 91% in September 2025. This remarkable turnaround is not only a testament to the property’s inherent quality and location but also to Hartman Properties’ unwavering commitment to breathing new life into Class B office buildings through smart investment and visionary leadership. “Ashford on the Bayou represents everything we stand for at Hartman Properties,” said Allen R. Hartman, Founder and Executive Chairman, known throughout the industry as Al Hartman. “When the market questioned the future of the office, we saw an opportunity to double down. We improved curb appeal, added move-in-ready spec suites, enhanced tenant services, and focused on what businesses really want—a beautiful, functional, flexible space that supports productivity and well-being. That’s what we delivered, and that’s why tenants continue to choose Ashford.” Located at 1001 South Dairy Ashford, Ashford on the Bayou blends the serenity of Houston’s natural bayou landscape with the convenience of a central Energy Corridor location. The property features lush greenery, walkable outdoor spaces, free garage parking, on-site security, and access to major highways—offering tenants a truly unique combination of peace, prestige, and proximity. In 2025, Hartman completed several major upgrades to the property, including lobby renovations, modernized common areas, and newly developed spec suites tailored to medical, professional services, and financial tenants. These enhancements continue to drive leasing momentum. One of the most recent tenants to sign is Walker Coffee Trading, L.P., which secured 4,552 square feet in a long-term lease beginning December 1, 2025. The deal was brokered by Ami Figg, who represented the landlord. Ashford’s occupancy growth is reflective of a broader pattern across Hartman’s Houston portfolio, which continues to outperform the metro average. While many landlords have struggled to adapt to the post-pandemic workplace, Hartman’s disciplined approach to asset repositioning, leasing, and tenant engagement has proven successful. “Our goal is simple: to create spaces that people love coming back to,” added Hartman. “Whether it’s a small business moving out of coworking, a national firm looking for value, or a medical provider seeking turn-key space, Ashford on the Bayou is a place where they can grow.” About Hartman PropertiesFounded in 1983 by Allen R. Hartman, Hartman Properties is a privately held commercial real estate investment firm with a portfolio of high-quality office, industrial, and retail assets located in key Texas markets including Houston, San Antonio, and Dallas. Known for its conservative investment philosophy, hands-on management style, and dedication to value creation, Hartman Properties has built a reputation as one of the most trusted names in Texas commercial real estate. The firm continues to prioritize tenant satisfaction, long-term relationships, and disciplined growth. For more information, visit www.hartman-properties.com.

HOUSTON, TX – October 22, 2025 – Jefferson Capital Systems, LLC, a nationally recognized leader in consumer-finance and debt-purchasing solutions, has signed a lease with Hartman Properties for 10,235 square feet in The Spectrum Building, located in the heart of San Antonio, TX. The lease term is 18 months, with lease commencement scheduled for December 1, 2025. This strategic agreement reinforces Hartman Properties’ ongoing momentum in leasing premium office space to leading-edge firms. Jefferson Capital’s decision to join The Spectrum Building testifies to the property’s reputation for delivering a sophisticated, professionally-managed environment — designed to support growth, collaboration, and success. “We’re thrilled to welcome Jefferson Capital Systems to The Spectrum Building,” said Allen R. Hartman, Founder and CEO of Hartman Properties. “Their selection of our space underscores the compelling value proposition we continue to present to ambitious, high-performing companies.” Representing the landlord in this transaction was Kaila Brodeur of Hartman Properties. Located in San Antonio, TX, The Spectrum Building offers direct access to major thoroughfares, premier dining and retail destinations, and a vibrant professional community. With class-A finishes, abundant natural light, and modern amenities, it is a top choice for established firms seeking an efficient and inspiring workspace. Hartman Properties continues to experience strong leasing velocity across its Texas portfolio, driven by proactive property management, strategic capital improvements, and a commitment to creating thriving business environments for its tenants. About Hartman Properties  Hartman Properties is a Texas-based commercial real estate investment and development firm with a focus on repositioning and managing high-quality office and medical properties. With a portfolio spanning key Texas markets, Hartman delivers spaces that empower professionals, foster community impact, and generate long-term value for investors. For more information visit www.hartman-properties.com.