Tecogen Inc. filings document the regulatory record for a Delaware operating company with common stock listed on NYSE American under TGEN. The company's Form 8-K reports furnish earnings releases, supplemental presentation materials, Regulation FD product communications, advisory agreement matters, and other events tied to its clean energy products and chiller applications.
Proxy materials describe board matters, executive compensation, equity awards and shareholder voting items. Other disclosures address related-person transactions, promissory note matters, capital structure, risk factors referenced in periodic reports, and governance controls around company agreements and public communications.
TECOGEN INC. Chief Accounting Officer Roger P. Deschenes bought additional company stock in the open market. On March 20, 2026, he purchased 10,000 shares of common stock at $2.23 per share. Following this transaction, he directly holds 52,962 shares of Tecogen common stock.
TECOGEN INC. Chief Executive Officer and Chief Financial Officer Rangesh Abinand reported an open-market purchase of 3,000 shares of common stock on 2026-03-20 at a price of $2.298 per share. Following this transaction, his directly reported holdings increased to 67,193 shares of common stock.
According to a footnote, 2,500 of the purchased shares were acquired by Rangesh Abinand and 500 shares were acquired by his daughter, all reported in this Form 4. The transaction is classified as a non-derivative, open-market purchase.
TECOGEN INC. director John Hatsopoulos exercised stock options to acquire 50,000 shares of Common Stock at $0.88 per share under a Stock Option Agreement dated September 20, 2023. Following the exercise, he directly owns 1,038,951 shares of Tecogen Common Stock, indicating an exercise-and-hold transaction with no same-day share sale disclosed.
Tecogen Inc. reports another year of losses but a much stronger balance sheet as it pivots toward data center opportunities. For 2025, the company posted a net loss of about $8.25 million, bringing its accumulated deficit to $55.9 million, and used $9.9 million of cash in operations.
Cash and cash equivalents rose to $12.4 million with working capital of $19.6 million, helped by a July 2025 equity offering of 3,985,000 shares at $5.00 per share that generated roughly $18.1 million in net proceeds. Related‑party promissory notes used to fund relocation and product development were fully repaid or converted to stock.
Tecogen’s three segments—Products, Services and Energy Production—sell natural‑gas‑fueled CHP and chiller systems plus long‑term service and energy contracts. Management highlights AI data centers as a major growth focus, supported by a February 2025 global sales and marketing agreement with Vertiv and a May 2025 uplisting of its common stock to the NYSE American. The filing also emphasizes risks from continued losses, supplier dependence, customer concentration, regulatory changes and evolving sentiment toward fossil fuels.
Tecogen Inc. reported full-year 2025 revenue of $27.07 million, up 19.7% from 2024, but its net loss widened to $8.25 million from $4.76 million. Fourth-quarter 2025 revenue was $5.32 million with a net loss of $3.99 million, reflecting higher costs and asset impairments.
Product revenue more than doubled to $9.13 million, while services grew modestly and energy production declined. Gross profit held roughly flat at $9.82 million, but gross margin fell to 36.3% as service and energy production margins compressed. Operating expenses rose 25.4%, including $1.11 million of goodwill and long-lived asset impairments.
Adjusted EBITDA loss deepened to $5.64 million from $3.63 million. Tecogen raised $18.11 million in a July 2025 follow-on offering, driving financing cash inflows of $17.40 million and ending 2025 with $12.43 million in cash. Management highlighted a growing data center chiller pipeline, including projects with Vertiv, and expects cash burn to decline from the second quarter of 2026.
Tecogen Inc. reported that it shared new investor-oriented content about data center cooling on its website and LinkedIn. The company posted a FAQ document titled “The Future of Data Center Cooling,” explaining how Tecogen’s natural gas and hybrid chillers, and its patented hybrid drive technology, apply to evolving data center designs. The FAQ notes that data centers have multiple cooling loads beyond direct liquid chip cooling, including chilled water systems at about 12–15°C and turbine inlet cooling. It illustrates that a 250 MW data center could need 50–75 Tecogen chillers, or in a chiller‑free design, 100+ hybrid drive power packages for cooling fans. Tecogen emphasizes that rising power needs and tighter peak‑power constraints support demand for solutions that reduce peak electricity usage.
Tecogen Inc. (TGEN) reported Q3 2025 results. Revenue rose to $7,183,121 from $5,630,130 a year ago, led by Products ($2,983,795) with strong Chiller sales ($2,234,728). Gross profit was $2,183,566, but higher operating expenses drove a loss from operations of $2,100,704 and a net loss of $2,130,947 (basic and diluted EPS $(0.07)).
Nine‑month revenue reached $21,755,712 versus $16,544,014 in 2024, with a net loss of $4,254,974. Cash flow from operations was $(7,336,419) for the nine months. Balance sheet liquidity improved: cash and cash equivalents were $15,253,975, up from $5,405,233 at year‑end, aided by a July 21 follow‑on offering of 3,985,000 shares at $5.00 per share, yielding net proceeds of $18,105,100. Total liabilities declined to $16,146,907 from $20,966,721, and stockholders’ equity increased to $25,317,381.
Shares outstanding were 29,818,979 at September 30, 2025, and 29,846,479 as of November 13, 2025.
Tecogen Inc. (TGEN) filed an 8-K announcing Q3 2025 earnings materials. The company furnished a press release with earnings commentary for the three and nine months ended September 30, 2025, under Item 2.02.
It also furnished an investor presentation under Item 7.01 to accompany an earnings conference call. The materials are attached as Exhibit 99.1 (press release, dated November 12, 2025) and Exhibit 99.2 (earnings call presentation, dated November 13, 2025). The company states these exhibits are being furnished and are not deemed “filed” for purposes of Section 18, nor incorporated by reference except as expressly set forth.
Tecogen Inc. reported that on September 17, 2025 it posted a new investor presentation on its website titled “Frequently Asked Questions - Tecogen Chillers for Artificial (AI) Data Centers.” This FAQ addresses questions from stockholders, analysts, and others about how Tecogen’s chillers are intended to be used in artificial intelligence data centers.
The company also reminded investors that important information about its business and products may be shared on its website and on social media platforms such as LinkedIn and X. Some of these postings may at times contain information that is considered material and nonpublic until broadly disseminated, so the company encourages investors and analysts to review these online channels for updates.
Tecogen Inc. reported that on September 17, 2025 it posted a new investor presentation on its website titled “Frequently Asked Questions - Tecogen Chillers for Artificial (AI) Data Centers.” This FAQ addresses questions from stockholders, analysts, and others about how Tecogen’s chillers are intended to be used in artificial intelligence data centers.
The company also reminded investors that important information about its business and products may be shared on its website and on social media platforms such as LinkedIn and X. Some of these postings may at times contain information that is considered material and nonpublic until broadly disseminated, so the company encourages investors and analysts to review these online channels for updates.
Tecogen Inc. reported that its Audit Committee approved the early repayment of two promissory notes held by director John N. Hatsopoulos with an aggregate principal of $1,000,000. These notes, dated October 2023 and July 2024 with interest rates of 5.12% and 5.06%, had both been amended to mature on July 31, 2026.
The October note was prepaid on September 3, 2025 and the July note on September 4, 2025, for total payments of $1,076,955.62, including aggregate interest of $76,955.62. By repaying these notes, Tecogen eliminated all of its outstanding debt and avoided approximately $46,159 of additional interest expenses that would have accrued through the original maturity date.