Enservco Corporation (ENSV) is a Longmont, Colorado-based oilfield services company with one remaining business: Heat Waves Hot Oil Service, which provides hot oiling and acidizing services to oil and gas wells primarily in Texas. The company generated $9.9 million in annualized revenue from that business as of its last filed financial statements. It has not filed an annual or quarterly report with the SEC since December 2024. Its stock trades on the OTC Expert Market at $0.0013 per share, implying a market capitalization of $75,000.
What followed a 2024 acquisition attempt was a cascade of debt defaults, a business unit unwound within eight months of purchase, a NYSE American delisting, and a deliberate decision to stop filing with the SEC. The accumulated deficit stands at $53.5 million as of the last available balance sheet.
What Enservco Does
Heat Waves Hot Oil Service provides two services. Hot oiling removes paraffin wax from wellbores by pumping hot oil through the production tubing, restoring flow that wax deposits have restricted. Acidizing pumps acid into the formation to dissolve carbonate materials and improve permeability, allowing oil and gas to move more freely toward the wellbore. Both are maintenance-type services: they restore a well to existing capacity rather than expand it. Neither commands premium pricing, and both are highly competitive, offered by dozens of small regional providers across the Texas and Rocky Mountain basins.
The company also operated a frac water heating division, which heated water used in hydraulic fracturing operations in cold climates. That business was in structural decline for several years. Enservco sold the Colorado-based frac heating assets in August 2024 for $1.695 million and held an option on the remaining Pennsylvania, West Virginia, and Ohio assets.
Enservco acquired Buckshot Trucking in August 2024 for $5 million. Buckshot provided hot shot trucking and LTL freight services to energy customers in Texas and the Rocky Mountain region. It was the only profitable segment the company had when it filed its September 2024 10-Q: $790,000 in segment profit on $1.66 million in revenue for a partial quarter, at roughly 48% gross margin. Eight months after acquiring it, Enservco sold Buckshot back to its prior owners in exchange for cancellation of the $2.7 million in acquisition notes.
The Financial Picture (Last Available: September 30, 2024)
The last available data comes from Enservco’s 10-Q for the period ending September 30, 2024, filed December 30, 2024.
Income Statement (9 months ended September 30, 2024)
| Metric | Value |
|---|---|
| Production Services Revenue | $7.4M |
| Logistics Revenue (partial quarter) | $1.7M |
| Total Revenue (continuing operations) | $9.1M |
| Segment Profit | $1.6M |
| SG&A | $4.2M |
| Operating Loss | ~($3.4M) |
| Interest Expense | $1.4M |
| Net Loss (continuing operations) | ~($5.8M) |
| Adjusted EBITDA | ($2.1M) |
The segment-level businesses were marginally profitable. SG&A alone consumed more than the gross profit generated, before interest was applied. For a company generating $9 million in revenue, a $4.2 million nine-month SG&A expense, roughly $5.6 million annualized, represents a cost structure with no plausible path to profitability at current revenue levels.
Balance Sheet (September 30, 2024)
| Item | Value |
|---|---|
| Cash | $172K |
| Total Assets | $18.5M |
| Total Liabilities | $14.9M |
| Stockholders’ Equity | $3.6M |
| Accumulated Deficit | ($53.5M) |
| Working Capital Deficit | ($5.4M) |
The Debt Stack
As of September 2024, total debt was about $8.8 million, with $8.36 million classified as current, due within twelve months. The company had $172,000 in cash.
| Facility | Balance (Sept 2024) | Rate | Status (Sept 2024) | Status as of Publication |
|---|---|---|---|---|
| Buckshot Acquisition Notes | $2.7M | 10% | Due Dec 31, 2024 | Cancelled — returned Buckshot to prior owners Apr 2025 |
| Utica Equipment Facility | $949K | Prime + spread (~9-10%) | Partially current | Refinanced Apr 2025; monthly payments reduced |
| LSQ Factoring | $793K | ~7.7% effective | Current | Unknown |
| Libertas Future Receivables | $909K | ~29% effective | Current | Settled Apr 2025 |
| Star Note | $1.0M | 20% | In default | Dispute over pledged collateral unresolved; no public disclosure |
| Angel/Equigen Convertible Notes | $625K | 16% | Accelerated; lawsuit filed | Settled for $759K, due Jan 15, 2025 |
| Financed Insurance | $924K | — | Current | Likely renewed as normal course; unknown |
| Other | $879K | — | Mixed | Unknown |
The Star Note default warrants attention. Enservco had pledged 250,000 shares of STRRP stock, valued at approximately $2.3 million, as collateral against the $1 million loan. When it missed a November 2024 payment, Star sent a default notice and cancelled the pledge on December 17, 2024. The company disputed the cancellation. The resolution of that dispute has never been publicly disclosed.
What Happened After September 2024
The filing record tells the story:
| Date | Filing | Event |
|---|---|---|
| Nov 2024 | 25-NSE | Delisted from NYSE American |
| Nov 2024 | NT 10-Q | Unable to file quarterly report on time |
| Dec 2024 | 8-K (2.04, 5.02) | Debt acceleration; leadership change |
| Mar 2025 | 8-K (5.02) | Board director resignation |
| Apr 2025 | Press release | Buckshot Trucking sold back to prior owners for note cancellation |
| Apr 2025 | Press release | Libertas debt settled; Utica facility refinanced |
| Apr 2025 | Press release | Company will not file its 2024 10-K to preserve cash |
| Aug 2025 | Schedule 13D/A | Star Equity Fund updates beneficial ownership position |
| Mar 2026 | (none) | No filings since August 2025 |
The April 2025 announcement that Enservco would not file its annual report is the decisive data point. The company stated that until a Form 10-K is filed, it does not intend to file any SEC reports, including 8-Ks, and would communicate through “other channels” instead. It cited cost savings as the reason. The OTCQB market notified Enservco it would be removed from the platform if the 10-K was not filed by May 15, 2025. The company indicated it did not expect to regain compliance.
The stock now trades on the OTC Expert Market, the lowest OTC tier, reserved for companies with no current public disclosure. Retail brokers are prohibited from soliciting purchases of Expert Market securities, and most retail platforms will not allow retail investors to buy shares at all. By late 2025 it had traded as low as $0.0001, and as of publication trades at $0.0013, a figure that reflects little meaningful price discovery.
What’s Left
The company that remains is Heat Waves Hot Oil Service: approximately $8-9 million in annualized revenue, roughly 11% gross margin, and a cost structure that requires either a dramatic reduction in SG&A or a near-doubling of revenue to approach breakeven. The frac water heating business has been sold. Buckshot is gone.
The management and board picture is more substantial than the filing record alone would suggest.
Richard Murphy serves as Chairman and CEO. Murphy is managing member of Cross River Capital Management, an institutional investor focused on micro-cap and small-cap companies. He has prior experience as an analyst and portfolio manager at SunAmerica Asset Management and as an investment banker at ING Barings. He knows distressed micro-cap situations from both sides of the table.
Mark Patterson serves as CFO. Patterson is the former CFO of Express-1 Expedited Solutions, which later became XPO Logistics, a $12 billion NYSE-listed freight company. He has also served as CFO and COO of All-State Express and CFO of multiple other private and public companies. He is the founder of BetterWay Logistics, a private freight brokerage.
The board includes four independent directors. Robert Herlin is co-founder, chairman and CEO of Evolution Petroleum Corp. and a past board member of Boots and Coots, an oilfield services company acquired by Halliburton in 2010. William Jolly is an investment banker with Scarsdale Equities with experience in capital formation and M&A. Kevin Chesser is a CPA and former Deloitte partner who served as an SEC practice leader with more than 34 years of experience in public company financial reporting. Marc Kramer, the most recently disclosed board change, resigned in March 2025.
This is not a management team that stumbled into distress. Murphy understands micro-cap capital structures, Patterson has run logistics operations at scale, Herlin has direct oilfield services M&A experience, and Chesser knows SEC reporting cold. The decision to stop filing, preserve cash, and communicate through other channels bears the hallmarks of a deliberate strategy rather than organizational collapse. What that strategy is (a quiet sale of Heat Waves, a private restructuring, or an orderly wind-down) has not been disclosed. The company’s silence since August 2025 is consistent with all three.
It is worth being precise about what a strong management team can and cannot accomplish here. As of September 2024, the business generated roughly $900,000 in gross profit against $5.6 million in annualized SG&A (a structure that produces deep operating losses regardless of execution quality). Those SG&A figures reflected a larger, two-segment company still bearing public reporting costs. The current cost structure, more than a year after shedding Buckshot and going dark on filings, is unknown. It is possible costs have been cut meaningfully. But even a dramatic reduction in overhead would need to bring SG&A below $900,000 to reach breakeven (a more than 80% reduction from the last known figure). What is observable is that the company has not communicated publicly in any meaningful way since April 2025. The main enservco.com website does not load properly, and portions of the site are non-functional. A capable team can run a clean process and maximize recoveries for creditors. Common shareholders should not interpret the quality of the management bench as a reason for optimism about the equity without evidence that the cost structure has been fundamentally reset and operations are being actively managed.
The Star Equity Fund Question
Star Equity Fund, LP occupies an unusual position in Enservco’s capital structure. As of its August 2025 Schedule 13D/A, Star holds 9,024,035 shares of common stock, 15.5% of shares outstanding, plus 3,476,965 shares of Series A Preferred Stock that are mandatorily convertible into common on a 1:1 basis. Upon conversion, Star’s stake would rise to roughly 20% of the company.
Star is also the holder of the defaulted $1 million Star Note at 20% interest, the same instrument at the center of the disputed cancellation of 250,000 pledged STRRP shares valued at approximately $2.3 million. Star is simultaneously a creditor, a large equity holder, and a pending preferred converter. It is, functionally, the controlling stakeholder, whether or not that was the intended outcome.
The possibilities for what happens next include engineering a private sale of Heat Waves assets, allowing the business to wind down and recovering what they can as a creditor, or simply holding a position that has declined to near zero. The company’s silence since August 2025 is consistent with any of those scenarios.
The Effective Privatization
Enservco is technically a publicly traded company. In practice it operates as a private one. It does not file financial statements. It does not hold earnings calls. It trades on the OTC Expert Market, accessible only to institutional or sophisticated investors, with retail solicitation prohibited, at a price implying a $75,000 market capitalization on 58 million shares outstanding. That figure is not a price at which the company could actually be acquired: any buyer would need to negotiate with debt holders, address the defaulted obligations, and likely assume or settle liabilities that dwarf the equity value. Volume is near zero, and any position of meaningful size cannot be sold without moving the price materially.
What to Watch
| Item | What to Look For | Timeline |
|---|---|---|
| Any SEC filing | A 10-K or 8-K would be the first real financial information in over a year | Unknown |
| Any company communications | The company has indicated it will communicate through other channels; no such communications have surfaced publicly. | Unknown |
| Star Equity Fund activity | Any new 13D amendment or EDGAR filing from Star would signal intent | Ongoing |
| OTC Expert Market status | Check otcmarkets.com for trading halt or further delisting | Ongoing |
| Heat Waves sale or shutdown | A press release announcing disposition of the remaining operating subsidiary would be the logical endgame | Unknown |
Enservco 10-Q, period ending September 30, 2024 (filed December 30, 2024)
Enservco 8-K, items 2.04 and 5.02 (December 2024)
Enservco 8-K, item 5.02 (March 14, 2025)
Schedule 13D/A, Star Equity Fund (August 26, 2025)
Enservco leadership page
Research and analysis conducted with AI assistance using SEC EDGAR filings as primary sources.