strraugust2024factsheet-

August 2024 A Diversified Holding Company with a Private Equity Strategy Building Solutions Division Investments Division Real Estate Private Investments Public Investments • Makes strategic investments in undervalued public companies, and potential acquisition targets or JVs. • Owns, manages, and finances operating company real estate assets. • Negotiates standalone financing to optimize financial leverage and cost of capital. • Designs and manufactures engineered wood products: glue-laminated timber (“glulam”) columns, beams, and trusses. • Designs and manufactures wood wall panels and permanent wood foundations. • Distributes building materials and operates two lumber yards and showrooms. • Designs and manufactures modular structures for commercial and residential projects. • Holds private company debt and minority equity interests. • Makes strategic investments in potential acquisition targets or JVs. Recently added (1) 8/15/24 closing price. (2) 8/15/24 share count. Common Stock (Nasdaq: STRR): Stock Price (1): $4.21 3.2 million shares outstanding (2) Series A Preferred Stock (Nasdaq: STRRP): Stock Price (1): $9.85 2.2 million shares outstanding (2) 10% annual cash dividend (1) 8/15/24 closing price. (2) 8/15/24 share count. KBS EdgeBuilder / Glenbrook EBGL Timber Technologies Flexible deal structuring with ability to use mix of cash, debt, common, preferred Star Equity shareholders do not pay any fees and have public market liquidity Looking for accretive bolt-ons and new verticals Open-ended investment time horizon allows for flexible holding periods Differentiated Corporate Strategy and Structure Operating Businesses Real Estate / Factories Showrooms Private Investments Company HQ Public Investments Long-term partnership approach rather than short-term transactional mentality Able to pursue both private and public acquisition targets, sometimes through activism (1) Real Estate Portfolio South Paris, Maine KBS – 85k sq ft Oxford, Maine Idle – 90k sq ft Big Lake, Minnesota Lumber Yard – 20k sq ft Colfax, Wisconsin TT – 69k sq ft Owned Facilities - $6.3M (1) Value Leased Facilities (1) (1) See August 2024 Investor Presentation for further detail. (1) Public activism efforts are not always in pursuit of acquisition. Solutions, Inc.

Consolidated Financial Highlights Scaling and optimizing operations to achieve sustained profitability $48.0 $57.1 $45.8 $- $20.0 $40.0 $60.0 FY 2021 FY 2022 FY 2023 Revenue ($ in millions) 5.8% 21.6% 26.0% 0% 10% 20% 30% FY 2021 FY 2022 FY 2023 Gross Margin (%) ($15.4) ($5.8) ($1.9) ($16.0) ($12.0) ($8.0) ($4.0) $0.0 FY 2021 FY 2022 FY 2023 Net Income ($ in millions) Growth Strategy Using a multi-pronged approach (1) $10.2M Cash $19.9MInvestments$10.9MDebt (1) Excludes discontinued operations, formerly Star’s Healthcare operations (Digirad); (2) As of August 15, 2024; (3) Includes ENSV common shares & shares equivalents acquired in the 8/9/2024 Enservco transaction as disclosed in company filings (4) Refer to Investor Presentation for additional information. Recent Acquisition: Timber Technologies $6.3M Real Estate(4) $6.8 $5.4 $(6.9) $(5.6) $(7.0) $(3.0) $1.0 $5.0 2022 2023 Adj. EBITDA ($ in millions) $(0.1) $(0.2) Corporate Costs Adj. EBITDA Operating Business-level EBITDA ✓ Increase KBS’s modular manufacturing capacity and output ✓ Explore opportunities to re-open idle Oxford, ME plant ✓ Expand presence in each of KBS, EBGL, and TT’s markets by increasing output and adding new products and services Long-term Financial Goals: Building Solutions Division KBS: mid-teens annual rev. growth (CAGR 2019 - 2023 = 17.2%) EGBL: high single-digit annual rev. growth (CAGR 2019 - 2023 = 5.6%) TT: high single-digit annual rev. growth Division-wide: 10% + annual rev. growth with gross margins above 25% Added significant scale, more than doubled Building Solutions Net Income & Adj. EBITDA Star Building Solutions Segment Timber Technologies (4) See Form 8-K filed 05/20/2024 and Form 8-K filed 07/29/2024. (5) Adjusted EBITDA is a non-GAAP number. Refer to Investor Presentation for additional information. M&A - Seeking attractive acquisition opportunities to: ✓ Expand existing business divisions through bolt-on acquisitions or acquisitions of related businesses ✓ Establish new business divisions $45.8 $18.7 $- $20.0 $40.0 $60.0 FY 2023 Total Revenue (in millions) (4) $2.5 $5.6 $- $2.0 $4.0 $6.0 FY 2023 Net Income (in millions) (4) $4.4 $5.9 $- $2.0 $4.0 $6.0 $8.0 FY 2023 Adjusted EBITDA (in millions) (5) ($ Millions) 6/30/2024 8/15/2024 Total Star Liquidity $8.1 $16.6 Consolidated Cash $4.1(3) $10.2(3) Excess Borrowing Capacity $4.1 $8.9 Consolidated Debt $14.3 $10.9 Pro-Forma Balance Sheet Recent transaction improve cash balance & financing flexibility Star monetized two real estate assets for $8.3 million(1) through sale- leaseback transactions in July 2024 (1) Total cash consideration, net of closing costs; (2) See August 2024 Investor Presentation for further detail; (3) Cash consideration includes $880k deposit, which will be released once certain financial metrics have been achieved. Investments Division ✓ Create value across portfolio of public and private investments ✓ Pursue additional sale-leasebacks and other financings to unlock latent value of real estate assets 2024 Transaction Highlights: (2) Public Investment: Enservco Acquired 20% of ENSV in cash-efficient transaction; diversified portfolio and offer strong growth opportunity. Real Estate: Sale Leasebacks Sold manufacturing facility for $5.6M(1) (3) and lumber yard for $2.7M(1); created value and generated cash. (3)