TGEN on NYSE
TECOGEN INC.
TECOGEN INC. is an American air-cond and warm air heatg equip and comm and indl refrig equip company.2 It is headquartered in Wilmington, United States.2 Its shares trade on NYSE under the symbol TGEN.2
$2.28 down 0.02 (0.87%)Price as of Oct 15, 2026 at 17:33 UTC
Last updated Oct 20, 2026.
Overview
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- TickerTGEN on NYSE2
- IndustryAir-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip2
- HeadquartersWilmington, United States2
- Incorporated inDE4
- Business address76 Treble Cove Road, Bldg. 1, North Billerica, Ma 018624
- Filer categoryNon-accelerated filer, Smaller reporting company4
- Legal formCorporation2
- LEI549300GD898YRLK9SS612
- StatusActive2
- LEI statusLapsed (not renewed)2
- Registered addressC/O CORPORATION SERVICE COMPANY, 19808 Wilmington, United States2
- Registered withDivision of Corporations, Department of State, 32890512
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Tecogen Inc., a Delaware corporation (together with its subsidiaries "we", "our", "us", "Tecogen," or "Company") produces commercial and industrial, natural-gas-fueled engine-driven, combined heat and power (CHP) products that reduce energy costs, decrease greenhouse gas emissions and alleviate congestion on the national power grid. Our products supply electric power or mechanical power for cooling, while heat from the engine is recovered and purposefully used at a customer facility. The majority of our customers are located in regions with the highest utility rates, typically California, the Midwest and the Northeast.5 From its latest annual report
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Key numbers, fiscal 2025
What sells
Revenue by product, business segment and region, as the company reports it to the SEC.
Products and services
Service brought in 61% of the revenue TECOGEN INC. broke down this way in fiscal 2025.
Products and services by year
| Products and services | 2024 | 2025 |
|---|---|---|
| Service | $16.1M | $16.6M |
| Product | $4.4M | $9.1M |
| Energy Service | $2.1M | $1.3M |
Business segments
Services brought in 61% of the revenue TECOGEN INC. broke down this way in fiscal 2025.
Business segments by year
| Business segments | 2024 | 2025 |
|---|---|---|
| Services | $16.1M | $16.6M |
| Products | $4.4M | $9.1M |
| Energy Production | $2.1M | $1.3M |
Where the money goes
Where each dollar of revenue went, fiscal 2025
- Cost of revenue64¢$17.2M
- Research and development4¢$1.2M
- Other costs32¢$8.6M
- Income tax0¢$20.6K
Out of $27.1M in revenue.6 The company lost money this year.
Financial statements
Every line of the income statement as filed: the last 2 fiscal years, latest first.6
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Total revenues | $27.1M | $22.6M |
| Total cost of sales | $17.2M | $12.7M |
| Gross profit | $9.8M | $9.9M |
| General and administrative | $13.5M | $11.4M |
| Selling | $2.3M | $1.9M |
| Research and development | $1.2M | $961.8K |
| Loss (gain) on sale of assets | $183 | -$12.2K |
| Long-lived asset impairment | $15.0K | $0 |
| Goodwill impairment | $1.1M | $217.3K |
| Operating Expenses | $18.1M | $14.4M |
| Loss from operations | -$8.2M | -$4.5M |
| Interest and other income (expense) | $151.7K | -$26.8K |
| Interest expense | -$150.3K | -$90.3K |
| Gain on the sale of marketable securities | $3.7K | $0 |
| Unrealized gain on marketable securities | $11.0K | $0 |
| Total other expense, net | $16.1K | -$117.1K |
| Loss before income taxes | -$8.2M | -$4.7M |
| State income tax provision | $20.6K | $22.6K |
| Consolidated net loss | -$8.2M | -$4.7M |
| Loss (income) attributable to the noncontrolling interest | $588 | -$86.5K |
| Net loss attributable to Tecogen Inc. | -$8.2M | -$4.8M |
| Net income (loss) per share - basic (in USD per share) | -$0.30 | -$0.19 |
| Weighted average shares outstanding - basic (in shares) | 27.2M shares | 24.9M shares |
| Net income (loss) per share - diluted (in USD per share) | -$0.30 | -$0.19 |
| Weighted average shares outstanding - diluted (in shares) | 27.2M shares | 24.9M shares |
No quarter-by-quarter statement was filed.
Every line of the balance sheet as filed: the last 4 fiscal years (annual) or 4 quarters (quarterly), latest first.6
| Period ending | 2025-12-31 | 2025-07-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|---|
| Cash and cash equivalents | $12.4M | $5.4M | ||
| Accounts receivable, net | $4.3M | $6.0M | ||
| Unbilled revenue | $138.0K | $398.9K | ||
| Inventory, net | $10.9M | $9.6M | ||
| Prepaid and other current assets | $1.1M | $680.6K | ||
| Total current assets | $28.9M | $22.1M | ||
| Property, plant and equipment, net | $1.6M | $1.7M | ||
| Right of use assets - operating leases | $1.5M | $1.7M | ||
| Right of use assets - finance leases | $1.4M | $452.4K | ||
| Intangible assets, net | $2.1M | $2.5M | ||
| Goodwill | $1.2M | $2.3M | $2.7M | |
| Other assets | $176.4K | $166.5K | ||
| TOTAL ASSETS | $37.0M | $31.1M | ||
| Related party notes payable | $0 | $1.5M | ||
| Accounts payable | $3.4M | $4.1M | ||
| Accrued expenses | $2.8M | $2.9M | ||
| Deferred revenue | $1.5M | $6.7M | ||
| Operating lease liability, current | $538.6K | $430.4K | ||
| Finance lease obligations, current | $280.3K | $85.6K | ||
| Acquisition liabilities, current | $677.2K | $902.6K | ||
| Unfavorable contract liabilities, current | $44.4K | $113.4K | ||
| Total current liabilities | $9.3M | $16.8M | ||
| Deferred revenue, net of current portion | $3.3M | $1.2M | ||
| Operating lease liability, long-term | $1.0M | $1.3M | ||
| Finance lease obligations, net of current portion | $992.3K | $325.2K | ||
| Acquisition liabilities, net of current portion | $826.8K | $1.0M | ||
| Unfavorable contract liability, net of current portion | $160.9K | $309.4K | ||
| Total liabilities | $15.5M | $21.0M | ||
| Stockholders equity: | $29.8K | $24.9K | ||
| Additional paid-in capital | $78.2M | $57.8M | ||
| Unearned compensation | -$712.0K | $0 | ||
| Accumulated deficit | -$55.9M | -$47.6M | ||
| Equity, Attributable to Parent, Total | $21.6M | $10.2M | ||
| Noncontrolling interest | -$173.0K | -$104.8K | ||
| Equity, Including Portion Attributable to Noncontrolling Interest, Total | $21.5M | $10.1M | $14.7M | |
| TOTAL LIABILITIES AND STOCKHOLDERS EQUITY | $37.0M | $31.1M | ||
| Common stock, par value (usd per share) | $0.00 | $0.00 | $0.00 | |
| Common Stock, Shares Authorized | 100.0M shares | 100.0M shares | ||
| Common Stock, Shares, Issued | 29.8M shares | 25.0M shares | ||
| Common Stock, Shares, Outstanding | 29.8M shares | 25.0M shares |
| Period ending | 2025-12-31 | 2025-07-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|---|
| Cash and cash equivalents | $12.4M | $5.4M | ||
| Accounts receivable, net | $4.3M | $6.0M | ||
| Unbilled revenue | $138.0K | $398.9K | ||
| Inventory, net | $10.9M | $9.6M | ||
| Prepaid and other current assets | $1.1M | $680.6K | ||
| Total current assets | $28.9M | $22.1M | ||
| Property, plant and equipment, net | $1.6M | $1.7M | ||
| Right of use assets - operating leases | $1.5M | $1.7M | ||
| Right of use assets - finance leases | $1.4M | $452.4K | ||
| Intangible assets, net | $2.1M | $2.5M | ||
| Goodwill | $1.2M | $2.3M | $2.7M | |
| Other assets | $176.4K | $166.5K | ||
| TOTAL ASSETS | $37.0M | $31.1M | ||
| Related party notes payable | $0 | $1.5M | ||
| Accounts payable | $3.4M | $4.1M | ||
| Accrued expenses | $2.8M | $2.9M | ||
| Deferred revenue | $1.5M | $6.7M | ||
| Operating lease liability, current | $538.6K | $430.4K | ||
| Finance lease obligations, current | $280.3K | $85.6K | ||
| Acquisition liabilities, current | $677.2K | $902.6K | ||
| Unfavorable contract liabilities, current | $44.4K | $113.4K | ||
| Total current liabilities | $9.3M | $16.8M | ||
| Deferred revenue, net of current portion | $3.3M | $1.2M | ||
| Operating lease liability, long-term | $1.0M | $1.3M | ||
| Finance lease obligations, net of current portion | $992.3K | $325.2K | ||
| Acquisition liabilities, net of current portion | $826.8K | $1.0M | ||
| Unfavorable contract liability, net of current portion | $160.9K | $309.4K | ||
| Total liabilities | $15.5M | $21.0M | ||
| Stockholders equity: | $29.8K | $24.9K | ||
| Additional paid-in capital | $78.2M | $57.8M | ||
| Unearned compensation | -$712.0K | $0 | ||
| Accumulated deficit | -$55.9M | -$47.6M | ||
| Equity, Attributable to Parent, Total | $21.6M | $10.2M | ||
| Noncontrolling interest | -$173.0K | -$104.8K | ||
| Equity, Including Portion Attributable to Noncontrolling Interest, Total | $21.5M | $10.1M | $14.7M | |
| TOTAL LIABILITIES AND STOCKHOLDERS EQUITY | $37.0M | $31.1M | ||
| Common stock, par value (usd per share) | $0.00 | $0.00 | $0.00 | |
| Common Stock, Shares Authorized | 100.0M shares | 100.0M shares | ||
| Common Stock, Shares, Issued | 29.8M shares | 25.0M shares | ||
| Common Stock, Shares, Outstanding | 29.8M shares | 25.0M shares |
Cash flow is reported year to date, not quarter by quarter, so there are no separate quarterly figures.
Every line of the cash flow as filed: the last 2 fiscal years, latest first.6
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Consolidated loss | -$8.2M | -$4.7M |
| Depreciation, accretion and amortization, net | $877.7K | $553.8K |
| Loss (gain) on sale of assets | $183 | -$12.2K |
| Provision for credit losses | $63.0K | $146.0K |
| Provision for inventory reserve | $110.5K | $70.5K |
| Unrealized gain on marketable securities | -$11.0K | $0 |
| Gain on the sale of marketable securities | -$3.7K | $0 |
| Stock-based compensation | $348.0K | $173.0K |
| Goodwill and long-lived asset impairment | $1.1M | $217.3K |
| Non-cash interest expense | $43.5K | $45.0K |
| Accounts receivable | $1.7M | $608.9K |
| Inventory, net | -$1.4M | $848.9K |
| Unbilled revenue | $260.9K | $859.6K |
| Prepaid assets and other current assets | -$405.7K | -$319.9K |
| Other non-current assets | $464.6K | $510.7K |
| Accounts payable | -$761.1K | -$371.7K |
| Accrued expenses | -$76.7K | $386.3K |
| Deferred revenue | -$3.1M | $5.9M |
| Other current liabilities | -$871.6K | -$832.2K |
| Net cash provided by (used in) operating activities | -$9.9M | $4.1M |
| Purchases of property and equipment | -$400.8K | -$969.2K |
| Proceeds on sale of property and equipment | $4.3K | $51.4K |
| Distributions to noncontrolling interest | -$67.6K | -$97.0K |
| Net used in investing activities | -$464.1K | -$1.0M |
| Proceeds from follow-on offering, net of transaction costs | $18.1M | $0 |
| (Repayment of) proceeds from related party note | -$1.1M | $1.0M |
| Finance lease principal payments | -$324.1K | -$62.8K |
| Proceeds from exercise of stock options | $696.8K | $71.0K |
| Net cash provided by financing activities | $17.4M | $1.0M |
| Change in cash and cash equivalents | $7.0M | $4.1M |
| Cash paid for interest | $183.4K | $45.3K |
| Cash paid for taxes | $20.6K | $22.6K |
| Right-of-use assets obtained in exchange for operating lease liabilities | $193.5K | $1.7M |
| Right-of-use assets acquired under finance leases | $1.2M | $295.1K |
| Contingent consideration | $0 | $272.9K |
| Related party note conversion to common stock | $514.1K | $0 |
No quarter-by-quarter statement was filed.
Corporate structure
TECOGEN INC. sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.
Major holders of TECOGEN INC.
- Portolan Capital Management, LLC Filed SCHEDULE 13G on TECOGEN INC., latest Jun 10, 2026
- Tryfon Natsis Filed SCHEDULE 13G/A on TECOGEN INC., latest Aug 14, 2025
- Ann Marie Brown Pacheco Filed SC 13G on TECOGEN INC., latest May 10, 2022
- TECOGEN INC. Wilmington, Delaware, United States
Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
What it owns
What TECOGEN INC. reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.
Property and equipment
| Item | Latest | A year before | Change |
|---|---|---|---|
| Property and equipment, before depreciation | $5.8M6 Dec 31, 2025 | $5.7M6 Dec 31, 2024 | +0.3% |
| Accumulated depreciation | $4.1M6 Dec 31, 2025 | $4.0M6 Dec 31, 2024 | +3.7% |
| Property and equipment, net | $1.6M6 Dec 31, 2025 | $1.7M6 Dec 31, 2024 | −7.4% |
| Finance-lease assets | $1.4M6 Dec 31, 2025 | $452.4K6 Dec 31, 2024 | +217.0% |
| Operating-lease assets (leased space) | $1.5M6 Dec 31, 2025 | $1.7M6 Dec 31, 2024 | −13.9% |
Investments
| Item | Latest | A year before | Change |
|---|---|---|---|
| Cash and cash equivalents | $12.4M6 Dec 31, 2025 | $5.4M6 Dec 31, 2024 | +130.0% |
Intangibles and goodwill
| Item | Latest | A year before | Change |
|---|---|---|---|
| Goodwill | $1.2M6 Dec 31, 2025 | $2.3M6 Dec 31, 2024 | −46.8% |
| Intangible assets, net (excluding goodwill) | $2.1M6 Dec 31, 2025 | $2.5M6 Dec 31, 2024 | −14.6% |
| Accumulated amortization | $2.7M6 Dec 31, 2025 | $2.3M6 Dec 31, 2024 | +16.0% |
| Finite-lived intangibles, net | $2.1M6 Dec 31, 2025 | $2.5M6 Dec 31, 2024 | −14.6% |
Inventory
| Item | Latest | A year before | Change |
|---|---|---|---|
| Inventory, total | $10.9M6 Dec 31, 2025 | $9.6M6 Dec 31, 2024 | +13.7% |
| Raw materials | $9.4M6 Dec 31, 2025 | $8.5M6 Dec 31, 2024 | +9.8% |
| Work in process | $1.4M6 Dec 31, 2025 | $930.8K6 Dec 31, 2024 | +51.6% |
| Finished goods | $177.4K6 Dec 31, 2025 | $177.4K6 Dec 31, 2024 | 0% |
Properties, in its own words
Our headquarters are located in North Billerica, Massachusetts, consisting of approximately 26,412 square feet of manufacturing, storage and office space, of which approximately 21,000 square feet is dedicated to manufacturing and warehousing.
On March 31, 2023, we entered into two lease agreements for two adjacent buildings located in North Billerica, Massachusetts, to serve as our headquarters and manufacturing facilities. The lease agreements provide for initial lease terms of five (5) years with two successive options to renew for additional terms of five (5) years. Both lease agreements commenced on January 1, 2024, and require payment of the base rent, real estate taxes, common maintenance expenses, and aggregate security deposits in the amount of $38,200. Our costs for initial improvements required to the leased premises is estimated to range between $1,150,000 and $1,200,000. The estimated straight-line monthly rent expense for the initial term of the lease is approximately $26,412 per month. In accordance with ASC 842-20-30-1, we recognized and recorded the lease liability and right-of-use asset using the discount rate for the lease upon the lease commencement date, January 1, 2024. We believe that our facilities are appropriate and adequate for our current needs.
The rest of Item 2
Service Centers
Our eleven leased service centers can be categorized into two different sizes. The larger leased spaces have office space to accommodate administrative, sales and engineering personnel, and warehouse space to stock parts in support of our service contracts. As of December 31, 2025, the service centers that fit this larger category are based in Piscataway, New Jersey and Valley Stream and Buchanan, New York to service the Metro New York City and the Mid-Atlantic region. The San Francisco Bay area and Northern California are served by such a center in Hayward, California. A portion of the corporate headquarters in North Billerica, Massachusetts are used in this manner to service all of our satellite service centers. The smaller service centers are parts depots or warehouses for the stocking of parts in support of our service contracts. These centers are located in Easton, Massachusetts, Los Angeles, California, Sterling Heights, Michigan, Newark, New York, East Windsor, Connecticut, East Syracuse, New York, Toronto, Ontario and Wellesley Chapel, Florida.
Item 2 of the 10-K filed Mar 19, 2026.5
Leadership
Who has led TECOGEN INC., and when. Pick a name to see everywhere that person has worked.
President
Chief financial officer
Chief operating officer
- Chief executive officerAbinand Rangesh Mar 27, 2023 to now14
- Chief executive officerLocke M. Benjamin Nov 19, 2014 to May 6, 202215
- Chief executive officerJohn Hatsopoulos Oct 1, 2013 to May 25, 201716
- PresidentRobert A. Panora Oct 1, 2013 to now17
- Chief financial officerRoger P. Deschenes Sep 8, 2026 to now18
- Chief financial officerAbinand Rangesh Mar 16, 2022 to May 6, 202219
- Chief financial officerDavid A. Garrison Aug 18, 2014 to May 18, 201620
- Chief financial officerBonnie Jean Brown Oct 1, 2013 to May 22, 201421
- Chief operating officerRobert A. Panora Oct 1, 2013 to now17
Board members and other officers (15)
- CAORoger P. Deschenes Jun 24, 2025 to now22
- VP of Business DevelopmentStephen Lafaille Jun 24, 2025 to now23
- Chief Accounting OfficerBonnie Jean Brown Jun 1, 2017 to Jun 1, 201824
- Board memberSusan B. Hirsch Oct 2, 2023 to now25
- Board memberAbinand Rangesh Mar 16, 2022 to now19
- Board memberRalph Jenkins Mar 16, 2022 to Jun 28, 202226
- Board memberJohn M. Albertine Dec 19, 2022 to now27
- Board memberFred Holubow Jul 8, 2020 to Jun 15, 202328
- Board memberLocke M. Benjamin Jul 21, 2020 to May 6, 202229
- Board memberDeanna M. Petersen Feb 8, 2018 to Jul 21, 202030
- Board memberKeith Davidson Sep 20, 2016 to Sep 20, 201631
- Board memberAhmed Ghoniem Oct 1, 2013 to now32
- Board memberAngelina Galiteva Oct 1, 2013 to now33
- Board memberJohn Hatsopoulos Oct 1, 2013 to now16
- General counselJohn Kimball Whiting Iv. Apr 2, 2020 to now34
Former names
- TECOGEN INCDec 22, 2011 to Mar 27, 20134
Timeline
- Oct 14, 20268-K Other events35
- Aug 31, 20268-K Other events36
- Aug 12, 20268-K Results of operations; Regulation FD disclosure37
- Jul 1, 20268-K Executive or director change38
- Jun 5, 20268-K Shareholder vote39
- May 12, 20268-K Results of operations; Regulation FD disclosure40
- Apr 8, 20268-K Other events41
- Mar 18, 20268-K Results of operations; Regulation FD disclosure42
- Jan 7, 20268-K Regulation FD disclosure43
- Nov 12, 20258-K Results of operations; Regulation FD disclosure44
- Sep 17, 20258-K Regulation FD disclosure45
- Sep 4, 20258-K Other events46
- Mar 27, 2023New chief executive Abinand Rangesh becomes CEO14
- Nov 19, 2014New chief executive Locke M. Benjamin becomes CEO15
- Oct 1, 2013New chief executive John Hatsopoulos becomes CEO16
- Sep 15, 2000Founded TECOGEN INC. is founded2
Calendar
Coming up
- Nov 11, 2026Reports results for the quarter ending Sep/2026 A year earlier it reported ($0.07) a share, on Nov 12, 2025.47
When it reported results
- Aug 12, 2026Reported quarterly or annual results37
- May 12, 2026Reported quarterly or annual results40
- Mar 18, 2026Reported quarterly or annual results42
- Nov 12, 2025Reported quarterly or annual results44
- Aug 12, 2025Reported quarterly or annual results48
- May 12, 2025Reported quarterly or annual results49
- Mar 17, 2025Reported quarterly or annual results50
- Nov 14, 2024Reported quarterly or annual results51
Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar
Filings
283 filings to the SEC since October 2021: 5 annual reports, 15 quarterly reports, 62 major events, 167 insider forms, 3 large holders, 31 other. The latest 20:
- Oct 14, 20268-K EDGAR
- Sep 8, 20264/A EDGAR
- Sep 8, 20264/A EDGAR
- Sep 8, 20264/A EDGAR
- Sep 8, 20264/A EDGAR
- Sep 8, 20264/A EDGAR
- Sep 4, 2026424B3 EDGAR
- Sep 3, 2026EFFECT EDGAR
- Sep 1, 2026EFFECT EDGAR
- Sep 1, 2026POS AM EDGAR
- Aug 31, 2026S-3 EDGAR
- Aug 31, 20268-K EDGAR
- Aug 31, 2026S-1/A EDGAR
- Aug 13, 202610-Q EDGAR
- Aug 12, 20268-K EDGAR
- Jul 1, 20268-K EDGAR
- Jun 30, 20264 EDGAR
- Jun 30, 20264 EDGAR
- Jun 30, 20264 EDGAR
- Jun 30, 20264 EDGAR
The 283 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last five years, summarized. The full record is on SEC EDGAR.
Insider trades
131 open-market trades by officers, directors and large owners since October 2021: 122 buys and 9 sales. Grants, option exercises and gifts are left out.
| Date | Who | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Apr 24, 2026 | Ghoniem AhmedDirector | Buy | 12,723 | $0.79 | $10.1K | Form 4 |
| Apr 13, 2026 | Hirsch Susan BDirector | Buy | 5,000 | $3.73 | $18.6K | Form 4 |
| Mar 27, 2026 | Hirsch Susan BDirector | Buy | 10,000 | $2.54 | $25.4K | Form 4 |
| Mar 27, 2026 | Lewis EarlDirector | Buy | 5,000 | $2.52 | $12.6K | Form 4 |
| Mar 26, 2026 | Lewis EarlDirector | Buy | 5,000 | $2.88 | $14.4K | Form 4 |
| Mar 23, 2026 | Whiting John Kimball IVGeneral Counsel & Secretary | Buy | 10,000 | $2.38 | $23.8K | Form 4 |
| Mar 20, 2026 | Deschenes Roger P.Chief Financial Officer | Buy | 10,000 | $2.23 | $22.3K | Form 4 |
| Mar 20, 2026 | Rangesh AbinandChief Executive Officer | Buy | 3,000 | $2.30 | $6.9K | Form 4 |
| Jun 24, 2025 | PANORA ROBERT ACOO and President | Sale | 900 | $6.86 | $6.2K | Form 4 |
| Jun 23, 2025 | PANORA ROBERT ACOO and President | Sale | 31,800 | $6.36 | $202.2K | Form 4 |
| Jun 23, 2025 | Lafaille StephenVP of Business Development | Sale | 10,000 | $7.25 | $72.5K | Form 4 |
| Jun 18, 2025 | PANORA ROBERT ACOO and President | Sale | 13,000 | $5.03 | $65.4K | Form 4 |
| Jun 6, 2025 | Lafaille StephenVP of Business Development | Sale | 25,000 | $5.98 | $149.5K | Form 4 |
| Jun 4, 2025 | PANORA ROBERT ACOO and President | Sale | 31,000 | $5.00 | $155.0K | Form 4 |
| Jun 4, 2025 | Lafaille StephenVP of Business Development | Sale | 15,000 | $5.00 | $75.0K | Form 4 |
| Jun 3, 2025 | PANORA ROBERT ACOO and President | Sale | 26,000 | $4.69 | $121.9K | Form 4 |
| Jun 3, 2025 | Lafaille StephenVP of Business Development | Sale | 10,000 | $4.88 | $48.8K | Form 4 |
| Mar 3, 2025 | Lafaille StephenVP of Business Development | Buy | 400 | $2.50 | $1.0K | Form 4 |
| Nov 22, 2024 | LEWIS EARL RDirector | Buy | 100,000 | $0.71 | $71.0K | Form 4 |
| Sep 27, 2024 | HATSOPOULOS JOHNDirector | Buy | 10,000 | $0.84 | $8.4K | Form 4 |
All 131 trades can be filtered by person here when JavaScript is on.
From Forms 4 filed with the SEC.
Major holders
Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.
- Portolan Capital Management, LLCSCHEDULE 13G, 1 filing Jun 10, 202652
- Tryfon NatsisSCHEDULE 13G/A, 1 filing Aug 14, 202553
- Ann Marie Brown PachecoSC 13G, 1 filing May 10, 202254
Executive pay
What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.
| Year | Executive | Age | Salary | Total pay |
|---|---|---|---|---|
| 2025 | Abinand Rangesh | $210.0K | $812.5K55 | |
| 2025 | Stephen Lafaille | $210.3K | $412.5K55 | |
| 2025 | John K. WhitingIV | $176.2K | $378.6K55 | |
| 2025 | Roger P. Deschenes | $164.4K | $365.8K55 | |
| 2025 | Robert A. Panora | $192.1K | $194.3K55 | |
| 2024 | Chief Executive Officer (Principal Executive Officer) | $201.0K | $203.5K55 | |
| 2024 | Vice President of Business Development | $173.6K | $175.9K55 | |
| 2024 | General Counsel and Secretary | $171.7K | $174.0K55 | |
| 2024 | Chief Operating Officer and President | $164.8K | $167.3K55 | |
| 2024 | Chief Financial and Accounting Officer (Principal Financial and Accounting Officer) and Treasurer | $151.9K | $153.2K55 |
Held by these funds
The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 68. Change is in shares since the quarter before.
13F reports cover disclosed long positions in U.S. stocks only.
SEC filer profile
How TECOGEN INC. is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.
- Name on EDGARTECOGEN INC.1
- CIK0001537435
- Employer ID (EIN)04-35361315
- Filer statusNon–accelerated filer not an emerging growth company; a smaller reporting company; not a shell company5
- Incorporated inDelaware5
- Fiscal year endsDecember 311
- Industry code (SIC)3585 Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip1
- SEC reviewing officeOffice of Technology, Division of Corporation Finance1
- Business address76 Treble Cove Road, Bldg. 1, North Billerica, MA 018621
- Phone781-466-64001
- Shares outstanding30,187,822 as of Aug 13, 202613
- Public float$84.2M as of Jun 30, 20255
- AuditorWOLF & COMPANY, P.C., Boston, Massachusetts PCAOB ID 392; no auditor attestation of internal control over financial reporting5
- On EDGAR sinceDec 22, 20111
- Filings688 in all: 8-K (186), 4 (172), 10-Q (41), 3 (41), CORRESP (26), UPLOAD (21), S-1/A (20), EFFECT (16)1
All 47 form types
10-K (14), 4/A (14), DEF 14A (11), SC 13G (10), SC 13G/A (10), 424B3 (9), 425 (9), DEFA14A (7), POS AM (7), 3/A (6), S-3/A (6), D (5), S-1 (5), S-3 (5), 8-K/A (4), DEF 14C (4), S-8 (4), 5 (3), 8-A12B (3), S-4/A (3), 424B4 (2), CERTNAS (2), CT ORDER (2), PRE 14C (2), RW (2), SC 13D (2), SC 13D/A (2), 10-K/A (1), 25 (1), 8-A12G (1), AW (1), CERT (1), DRS (1), PRE 14A (1), S-1MEF (1), S-4 (1), S-8 POS (1), SCHEDULE 13G (1), SCHEDULE 13G/A (1)
- Latest filingsAnnual report (10-K) Mar 19, 2026
Quarterly report (10-Q) Aug 13, 2026
Proxy statement (DEF 14A) Apr 21, 2026
Latest 8-K (8-K) Oct 14, 2026
Risk factors and legal proceedings
The risks TECOGEN INC. names in Item 1A of its 10-K filed Mar 19, 2026: 39 risks under these headings, as written.5
- Risks Relating to Our Business and Financial Condition
- Our operating history is characterized by net losses. There can be no assurance we will be able to increase our revenues and become profitable in the future.
- We are dependent on a limited number of third-party suppliers for the supply of key components for our products.
- We depend on a small number of customers for a substantial portion of our product revenues. The loss of one or more of these customers, or our inability to collect outstanding receivables from such customers could have a material adverse effect on our financial results.
- The amount of our backlog is subject to fluctuation due to our customers’ experiencing unexpected delays in financing, permitting, or modifications in specifications of the equipment.
- We experience significant fluctuations in revenues and product mix from quarter to quarter on our product sales which may make period to period comparisons difficult.
- We expect significant competition for our products and services.
- We may not achieve production cost reductions necessary to competitively price our products, which would adversely affect our sales.
- Our products involve a lengthy sales cycle and we may not anticipate sales levels appropriately, which could impair our results of operations.
- The economic viability of our projects depends on the price spread between natural gas and other fuel and electricity, and the variability of these prices creates a risk that our projects will not be economically viable and that potential customers will avoid such energy price risks.
- We may make acquisitions or take other corporate strategic actions that could harm our financial performance.
- Expiring customer contracts may lead to decreases in revenue and increases in expenses.
The other 28 risks
- Our revenue from energy billing may be adversely impacted by increases in the price of natural gas, reductions in utility rates for electrical power, weather conditions, or by an increase in remote work and study environments, all of which could reduce our revenue.
- We may be affected by global climate change or by legal, regulatory, or market responses to such change.
- Our financial condition and results of operations could suffer if there is an impairment of goodwill or intangible assets.
- Increased costs of labor and employee health and welfare benefits may impact our results of operations.
- We are dependent on the continued contributions of our senior management and other key employees, and the loss of any of whom could adversely affect our business, operating results, and financial condition.
- Risks Related to Our Technologies
- If we are unable to maintain our technological expertise in design and manufacturing processes, we will not be able to successfully compete.
- Legal, Regulatory and Compliance Risks
- Changes in regulations applicable to our businesses may impair the profitability of our businesses, and our failure to comply with applicable laws and regulations may increase our costs, reduce our earnings or limit our growth.
- Agreements with our customers may include potential liquidated damages relating to construction delays or performance guaranties.
- Utilities or governmental entities could hinder our entry into and growth in the marketplace, and we may not be able to effectively sell our products.
- The reduction, elimination or expiration of government and economic incentives for applications of our equipment could reduce demand for our equipment and harm our business.
- We may be exposed to substantial liability claims if we fail to fulfill our obligations to our customers or our on-site equipment malfunctions.
- Losses or unauthorized access to or releases of confidential information, including personal information, could subject us to significant reputational, financial, legal and operational consequences.
- Credit and Liquidity Risks
- We are exposed to credit risks with respect to some of our customers.
- Risks Relating to Ownership of our Common Stock
- Investment in our Common Stock is subject to price fluctuations and market volatility.
- If securities or industry analysts do not publish research or publish inaccurate or unfavorable research about our business, our share price and trading volume could decline.
- Because our directors and executive officers are among our largest stockholders, they can exert influence over our business and affairs and have actual or potential interests that may differ from other stockholders or investors.
- Current stock holdings may be diluted if we make future equity issuances or if outstanding options are exercised for shares of our common stock.
- Future sales of our shares by our existing stockholders may cause our stock price to fall.
- Because we have not and do not intend to pay cash dividends, our stockholders receive no current income from holding our stock.
- We incur substantial costs to operate as a public reporting company.
- We are a “smaller reporting company” within the meaning of the Securities Act and Securities Exchange Act and we intend to take advantage of certain exemptions from disclosure requirements available to smaller reporting companies which could make our securities less attractive to investors and may make it more difficult to compare our performance with that of other public companies.
- Delaware law and our certificate of incorporation and bylaws contain certain provisions, including anti-takeover provisions that limit the ability of stockholders to take certain actions and could delay or discourage takeover attempts that stockholders may consider favorable.
- General Business Risks
- Our intellectual property may not be adequately protected.
- Others may assert that our technology infringes their intellectual property rights.
- Our business and financial performance may be adversely affected by information systems interruptions, cybersecurity attacks or other disruptions which could have a material adverse effect on our business and results from operations.
- Our success is dependent upon attracting and retaining highly qualified personnel and the loss of key personnel could significantly hurt our business.
- Our business may be impacted by political events, war, terrorism, public health issues, natural disasters and other circumstances that are not within our control.
- We may be subject to litigation, including securities class action litigation, which may harm our business and operating results.
Legal proceedings
We and our properties are not parties to any material pending legal proceedings, other than ordinary routine litigation incidental to our business.
The opening of Item 3, Legal Proceedings.5
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1SEC EDGARTECOGEN INC. filings on SEC EDGAR
- 2
- 3Yahoo FinanceTGEN quote
- 4SEC EDGARTECOGEN INC. filings on SEC EDGAR
- 5
- 6SEC EDGARTECOGEN INC. 10-K for fiscal 2025
- 7SEC EDGARTECOGEN INC. 10-K for fiscal 2019
- 8SEC EDGARTECOGEN INC. 10-K for fiscal 2020
- 9SEC EDGARTECOGEN INC. 10-K for fiscal 2021
- 10SEC EDGARTECOGEN INC. 10-K for fiscal 2022
- 11SEC EDGARTECOGEN INC. 10-K for fiscal 2023
- 12SEC EDGARTECOGEN INC. 10-Q for fiscal 2026
- 13SEC EDGARTECOGEN INC. 10-Q for fiscal 2026
- 14
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- 17SEC EDGARRobert A. Panora, President
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- 22SEC EDGARRoger P. Deschenes, CAO
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- 25SEC EDGARSusan B. Hirsch, Board member
- 26SEC EDGARRalph Jenkins, Board member
- 27SEC EDGARJohn M. Albertine, Board member
- 28SEC EDGARFred Holubow, Board member
- 29SEC EDGARLocke M. Benjamin, Board member
- 30SEC EDGARDeanna M. Petersen, Board member
- 31SEC EDGARKeith Davidson, Board member
- 32SEC EDGARAhmed Ghoniem, Board member
- 33SEC EDGARAngelina Galiteva, Board member
- 34
- 35SEC EDGAROther events
- 36SEC EDGAROther events
- 37
- 38SEC EDGARExecutive or director change
- 39SEC EDGARShareholder vote
- 40
- 41SEC EDGAROther events
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- 43SEC EDGARRegulation FD disclosure
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- 45SEC EDGARRegulation FD disclosure
- 46SEC EDGAROther events
- 47NasdaqNasdaq calendar
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